Qureos Mentor

9fin

<div>About 9fin
9fin is the AI platform powering global debt markets &mdash; the world&rsquo;s largest asset class at over $145 trillion.
Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis, and high-value workflows across global markets.
Today, 9fin powers teams at 300+ blue-chip institutions worldwide, including global banks, asset managers, private equity firms, law firms, and advisors. The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption.
We&rsquo;re at a defining inflection point. With proven product-market fit and strong, global market pull, 9fin is accelerating toward becoming the category-defining platform for debt markets worldwide.<h2 class="jobSectionHeader">
What you&rsquo;ll work on</h2>
You'll be embedded with our content team, working directly with editors to turn engagement and coverage data into the decisions that shape what we publish. Sitting within the analytics team alongside our analysts and analytics engineers, you'll own content analytics end-to-end, from instrumentation through to the insight that changes editorial strategy.<ul><li>
Build engagement measurement beyond readership. Define and instrument the signals that reveal an article's true value; time on page, scroll depth, click-through.</li><li>
Separate genuine engagement from passing interest. Build tag-effectiveness analysis and LLM-based content classification so editors can see what actually resonates.</li><li>
Measure core and public audiences. Quantify engagement for our core subscriber base (client value) and broader public reach (demand generation), across content, social and video.</li><li>
Power data-driven coverage prioritisation. Surface the highest-attention companies and situations so editorial resource hits the most contentious, market-moving stories.</li><li>
Track competitive coverage and story attribution. Monitor coverage gaps, timeliness and accuracy versus competitors, and attribute market-moving stories to 9fin.</li><li>
Explain what's moving the numbers. Diagnose spike drivers and build reproducible analysis frameworks rather than one-off dashboards.</li><li>
Own content datasets and the semantic layer. Author dbt models on BigQuery and own the Omni semantic layer so the newsroom gets fast, trustworthy, self-serve answers.</li><li>
Be the embedded analytical partner to the newsroom. Work directly with editors, translating content questions into analysis that shapes editorial strategy and helps us build a better distressed product than the competition.</li></ul><h2 class="jobSectionHeader">
About You</h2>
You're a senior, hands-on individual contributor with real technical depth who's excited to sit inside a newsroom and use data to shape what gets covered and how.<ul><li>
Proven analytics experience, ideally in media, B2B SaaS or fintech, owning analysis end-to-end and driving real decisions.</li><li>
Expert SQL for complex analysis, optimisation and reusable datasets.</li><li>
dbt &amp; a cloud data warehouse (BigQuery, Snowflake or similar) &mdash; commercial experience building production models, tests and docs.</li><li>
Modern BI with an integrated semantic layer &mdash; building self-serve dashboards and owning metric definitions (e.g. Omni, Looker, Thoughtspot).</li><li>
Engagement and event analytics &mdash; designing tracking/instrumentation and analysing behavioural signals, with the statistical judgement to separate signal from noise.</li><li>
Fluent with AI tools &mdash; building LLM-based pipelines to classify and analyse content at scale.</li><li>
A strong communicator who turns analysis into clear narratives editors and leadership can act on.</li><li>
Curious and a fast learner &mdash; comfortable grasping distressed-market concepts within a few explanations; a background blending data and storytelling is a real plus.</li><li>
Finance or distressed-debt knowledge is a plus, not essential.</li><li>
Bonus: content, web, SEO, social or audience/growth analytics; Python for deeper analysis.</li></ul><h2 class="jobSectionHeader">
Our benefits</h2>
We&rsquo;re a scaling start up, and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel.
Financial &amp; Insurance<ul><li>
Competitive Salary (our salary bands are benchmarked at the top end of the market)</li><li>
Equity options</li><li>
Pension (your minimum contributions are 4% with 9fin matching up to 7%)</li><li>
Private Medical Insurance</li><li>
Paid sick leave with Income Protection for long periods of illness</li><li>
Group Life Assurance</li><li>
Season Ticket Loan &amp; Cycle to Work schemes</li></ul>
Time off<ul><li>
25 holiday days per year</li><li>
Local public holidays (with the ability to exchange them for alternative days)</li><li>
Hybrid working model, to allow you the flexibility to decide how, where and when you do your best work</li><li>
Work abroad for up to 3 months a year</li><li>
1 month paid sabbatical after 5 years of service</li><li>
Enhanced parental leave &amp; flexible working arrangements available</li></ul>
Training &amp; Culture<ul><li>
Professional learning and development budget</li><li>
Quarterly team socials</li><li>
Summer and Winter company social events</li></ul>
9fin is an equal opportunities employer
At 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can reach their full potential and truly belong. We recognize that building diverse teams enables a more creative and productive environment. If you&rsquo;re excited about this role but your experience doesn&rsquo;t perfectly align with the job description, we encourage you to apply anyway. You might just be who we&rsquo;re looking for &mdash; either for this role, or perhaps another.</div>

Senior Data Analyst - Content

<div>
 
 About 9fin
 
 
 
 9fin is the AI platform powering global debt markets &mdash; the world&rsquo;s largest asset class at over $145 trillion.
 
 
 Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis, and high-value workflows across global markets.
 
 
 Today, 9fin powers teams at 300+ blue-chip institutions worldwide, including global banks, asset managers, private equity firms, law firms, and advisors. The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption.
 
 
 We&rsquo;re at a defining inflection point. With proven product-market fit and strong, global market pull, 9fin is accelerating toward becoming the category-defining platform for debt markets worldwide.
 
 
 
 The Opportunity
 
 
 
 The Data Science team is growing at 9fin! We are doing world-class work with groundbreaking technologies to build data-driven products using machine learning, computer vision, natural language processing, speech and audio, and knowledge/data mining. We are looking for a
 
 Senior AI Engineer
 
 to accelerate our application of AI across teams and products. Come and join us, you will get to build large-scale AI powered systems, learn and apply the latest techniques, and work alongside other great researchers and engineers!
 
 
 
 Every day is different, but here's an example of the kind of things you'll work on:
 
 
 
 <ul>
 <li>
 Design and build generative AI applications tailored to complex financial and legal workflows, leveraging state-of-the-art models to deliver innovative, practical solutions that streamline decision-making and unlock new efficiencies.
 </li>
 <li>
 Drive end to end model development lifecycle, leading the team in best practices, ensuring reproducible research and well managed model delivery/deployment.
 </li>
 <li>
 Collaborate cross functionally to share diverse ideas, understand business problems, and elevate/mentor your teammates.
 </li>
 <li>
 Translate complex problems into well-defined scoped bets in an internal startup style environment, dynamic and fast-paced.
 </li>
 <li>
 Learn and apply ground-breaking research and approaches in advanced topics, iterating improvements with a fail fast mentality.
 </li>
 <li>
 Be a proactive sharer of compelling ideas/work to the rest of the team and organisation. We want you to help lead/push the adoption of AI throughout 9fin.
 
 
 </li>
 </ul>
 
 About You
 
 
 
 This role will be a great fit if you:
 
 
 <ul>
 <li>
 Strong proficiency in Python for production ready delivery.
 </li>
 <li>
 You&rsquo;re an expert in any of the following areas - deep expertise in one and familiarity with others is ideal:
 </li>
 <ul>
 <li>
 Information Retrieval: chunking strategies, (finetuning) embedding models, training re-rankers.
 </li>
 <li>
 Entity/relationship extraction/resolution
 </li>
 <li>
 Knowledge Graphs; building and inference, graphRAG
 </li>
 <li>
 Recommendation systems and ranking: personalisation, learning-to-rank, feed ranking, user modelling, etc.
 </li>
 <li>
 Tabular ML: feature engineering, structured data modelling (GBDTs, etc.)
 </li>
 <li>
 Statistical &amp; Predictive Modelling: supervised ML, anomaly detection, temporal modelling, etc.
 </li>
 <li>
 Deep understanding of the GenAI landscape and agentic frameworks.
 </li>
 </ul>
 <li>
 Experience working in the full model lifecycle (including experimentation, training, testing, monitoring, and deployment). We are data centric and love our evals!
 </li>
 <li>
 You have a strong product focus with a desire to understand the end-to-end impact of your solutions for our end users.
 </li>
 <li>
 Good knowledge of AWS&rsquo;s AI infrastructure.
 
 </li>
 </ul>
 
 Benefits
 
 
 
 We&rsquo;re a scaling start up, and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel.
 
 
 
 Financial &amp; Insurance
 
 
 
 <ul>
 <li>
 Competitive Salary (our salary bands are benchmarked at the top end of the market)
 </li>
 <li>
 Equity
 </li>
 <li>
 Pension (your minimum contributions are 4% with 9fin matching up to 7%)
 </li>
 <li>
 Private Medical Insurance
 </li>
 <li>
 Paid sick leave with Income Protection for long periods of illness
 </li>
 <li>
 Group Life Assurance
 </li>
 <li>
 Season Ticket Loan &amp; Cycle to Work schemes
 
 
 </li>
 </ul>
 
 Time off
 
 
 
 <ul>
 <li>
 25 holiday days per year
 </li>
 <li>
 Local public holidays (with the ability to exchange them for alternative days)
 </li>
 <li>
 Hybrid working model, to allow you the flexibility to decide how, where and when you do your best work
 </li>
 <li>
 Work abroad for up to 3 months a year
 </li>
 <li>
 1 month paid sabbatical after 5 years of service
 </li>
 <li>
 Enhanced parental leave &amp; flexible working arrangements available
 
 
 </li>
 </ul>
 
 Training &amp; Culture
 
 
 
 <ul>
 <li>
 Professional learning and development budget
 </li>
 <li>
 AI experimentation budget of &pound;800 (UK) per employee to trial AI tools
 </li>
 <li>
 Quarterly team socials
 </li>
 <li>
 Summer and Winter company social events
 
 
 </li>
 </ul>
 
 9fin is an equal opportunities employer
 
 
 
 At 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can reach their full potential and truly belong. We recognize that building diverse teams enables a more creative and productive environment. If you&rsquo;re excited about this role but your experience doesn&rsquo;t perfectly align with the job description, we encourage you to apply anyway. You might just be who we&rsquo;re looking for &mdash; either for this role, or perhaps another.
</div>

Senior AI Engineer

<div>
 
 About 9fin
 
 
 
 9fin is the AI platform powering global debt markets &mdash; the world&rsquo;s largest asset class at over $145 trillion.
 
 
 Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis, and high-value workflows across global markets.
 
 
 Today, 9fin powers teams at 300+ blue-chip institutions worldwide, including global banks, asset managers, private equity firms, law firms, and advisors. The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption.
 
 
 We&rsquo;re at a defining inflection point. With proven product-market fit and strong, global market pull, 9fin is accelerating toward becoming the category-defining platform for debt markets worldwide.
 
 
 
 What You&rsquo;ll Work On
 
 
 
 <ul>
 <li>
 As part of a cross-functional team, contribute to projects by helping design systems, building proof of concepts, and delivering new service functionality &mdash; including APIs, data processing, and automation &mdash; while collaborating closely with Product and Clients.
 </li>
 <li>
 Development and engineering primarily on backend services and web-application&ndash;hosted tools and systems within the 9fin platform.
 </li>
 <li>
 Play an impactful role within project teams as an individual contributor, participating in code reviews, collaborating with peers, and contributing ideas during research and experimentation with new technologies.
 </li>
 <li>
 Continually improve the 9fin codebase by taking opportunities to automate, refactor, and document where it&rsquo;s most valuable.
 </li>
 <li>
 Work across a diverse set of web platforms, including financial data modelling, access-control business logic, environmental and emissions data capture, integration with ML/AI prediction services, data visualisation, and automation systems.
 </li>
 <li>
 Collaboration and teamwork: All projects are delivered by cross-functional teams that include domain expertise from 9fin&rsquo;s financial, legal, and editorial colleagues. You&rsquo;ll work closely with non-technical stakeholders and help explain technical concepts in a clear, accessible way to support effective team progress.
 </li>
 <li>
 Developer experience: You&rsquo;ll work within a strong developer experience setup, including automated preview environments, feature flags, and well-maintained non-production environments, enabling rapid iteration and feedback.
 
 
 </li>
 </ul>
 
 Our Backend Stack
 
 
 
 <ul>
 <li>
 Python is the dominant backend language used
 </li>
 <li>
 Flask &amp; FastAPI
 </li>
 <li>
 Typing is used within our Python stack to power automated documentation and API definitions
 </li>
 <li>
 Relational Databases (PostgreSQL) at the heart of majority of services
 </li>
 <li>
 We have our own internal developer platform with standardised paved road approaches to infrastructure to bring your code into production as quickly as possible.
 </li>
 <li>
 We&rsquo;re AWS for Cloud hosted services
 </li>
 <li>
 Heavy use of AWS lambda Serverless
 </li>
 <li>
 Docker (AWS ECS) for uniform development/deployment from dev to prod
 
 
 </li>
 </ul>
 
 Requirements
 
 
 
 This role will be a great fit if you:
 
 
 <ul>
 <li>
 Have experience working as a Full-Stack or Backend-leaning Engineer within a product team, contributing to system design discussions and delivering production software.
 </li>
 <li>
 Can plan and reason about software effectively, clearly communicating how your work fits into larger systems and delivers value to clients.
 </li>
 <li>
 Have hands-on experience designing and implementing data flow through software, from persistent storage to API endpoints, applying industry best practices for validation and reliability.
 </li>
 <li>
 Have experience with Python and web frameworks (we currently use FastAPI with strong typing and Pydantic).
 </li>
 <li>
 Have experience building and consuming APIs, ideally within a service-oriented architecture.
 </li>
 <li>
 Have a working knowledge of SQL for querying and working with relational data.
 </li>
 <li>
 Are a collaborative and proactive communicator, comfortable working with engineers and non-engineers across the business.
 </li>
 <li>
 Care about code quality, writing testable and maintainable code, and actively participating in code reviews &mdash; both receiving feedback and reviewing others&rsquo; work.
 
 
 </li>
 </ul>
 
 Benefits
 
 
 
 We&rsquo;re a scaling start up and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel.
 
 
 
 Financial &amp; Insurance
 
 
 
 <ul>
 <li>
 Competitive Salary (our salary bands are benchmarked at the top end of the market)
 </li>
 <li>
 Pension (your minimum contributions are 4% with 9fin matching up to 7%)
 </li>
 <li>
 Private Medical Insurance
 </li>
 <li>
 Paid sick leave with Income Protection for long periods of illness
 </li>
 <li>
 Group Life Assurance
 </li>
 <li>
 Season Ticket Loan &amp; Cycle to Work schemes
 
 
 </li>
 </ul>
 
 Time off
 
 
 
 <ul>
 <li>
 25 holiday days per year
 </li>
 <li>
 Local public holidays (with the ability to exchange them for alternative days)
 </li>
 <li>
 Hybrid working model, to allow you the flexibility to decide how, where and when you do your best work
 </li>
 <li>
 Work abroad for up to 3 months a year
 </li>
 <li>
 1 month paid sabbatical after 5 years of service
 </li>
 <li>
 Enhanced parental leave &amp; flexible working arrangements available
 
 
 </li>
 </ul>
 
 Training &amp; Culture
 
 
 
 <ul>
 <li>
 Professional learning and development budget
 </li>
 <li>
 Quarterly team socials
 </li>
 <li>
 Summer and Winter company social events
 
 
 </li>
 </ul>
 
 9fin is an equal opportunities employer
 
 
 
 At 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can reach their full potential and truly belong. We recognize that building diverse teams enables a more creative and productive environment. If you&rsquo;re excited about this role but your experience doesn&rsquo;t perfectly align with the job description, we encourage you to apply anyway. You might just be who we&rsquo;re looking for &mdash; either for this role, or perhaps another.
</div>

Full Stack Engineer

<div>About 9fin
9fin is the AI platform powering global debt markets &mdash; the world&rsquo;s largest asset class at over $145 trillion.
Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis, and high-value workflows across global markets.
Today, 9fin powers teams at 300+ blue-chip institutions worldwide, including global banks, asset managers, private equity firms, law firms, and advisors. The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption.
We&rsquo;re at a defining inflection point. With proven product-market fit and strong, global market pull, 9fin is accelerating toward becoming the category-defining platform for debt markets worldwide.<h2 class="jobSectionHeader">
The Opportunity</h2>
We are seeking an Engineering Lead II to lead three customer-facing engineering teams across Onboarding &amp; Activation, Mobile, and Office Productivity.
These teams are responsible for how customers discover, adopt, access, and engage with 9fin across multiple surfaces and workflows. Together they own critical parts of the customer journey including onboarding, permissions and entitlements, activation, notifications, discovery, mobile experiences, and productivity tooling such as Microsoft Office integrations.
You will lead multiple engineering pods (circa 7 engineers total), each with its own product area, roadmap, and technical challenges, while ensuring they operate as a connected ecosystem rather than independent products. Success in this role requires strong organisational leadership, technical depth, and the ability to identify opportunities for shared platforms, reusable services, and common architectural patterns across teams.
This role is ideal for a highly technical engineering leader who enjoys operating across multiple domains, helping teams solve complex architectural challenges, and creating alignment between product strategy, customer needs, and engineering execution.<h2 class="jobSectionHeader">
What You'll Work On</h2>
Every day is different, but here's a flavour of the kinds of challenges you'll be tackling:<ul><li>
Build and lead a high-performing team responsible for 9fin's mobile applications, mobile platform services, and productivity tooling.</li><li>
Coach and develop engineers across multiple disciplines, helping them grow their technical expertise, product thinking, and leadership skills.</li><li>
Shape the technical vision and roadmap for how 9fin integrates into customer workflows beyond the core web application.</li><li>
Partner with Product and Design to identify opportunities where mobile, AI, notifications, and productivity tools can create meaningful customer value.</li><li>
Guide architectural decisions across mobile applications, Backend-for-Frontend services, Office integrations, and workflow automation capabilities.</li><li>
Work closely with AI and Search teams to bring AI-native experiences into customer workflows, including search, recommendations, and intelligent productivity features.</li><li>
Collaborate with Platform, Data, Identity, Onboarding, Activation, and Permissions teams to ensure seamless customer experiences across products.</li><li>
Drive engineering excellence while maintaining a strong focus on customer outcomes, adoption, engagement, and retention.</li><li>
Help establish success metrics and use product analytics, customer feedback, and business outcomes to inform prioritisation and investment decisions.</li><li>
Hire, onboard, and develop exceptional engineering talent as these micro teams scale in future</li><li>
Stay engaged with technical design and architecture reviews while empowering engineers to take ownership of implementation details.</li><li>
Balance short-term product delivery with long-term platform investments that enable future innovation.</li></ul><h2 class="jobSectionHeader">
About You</h2>
This role will be a great fit if you:<ul><li>
Have experience leading high-performing product engineering teams and delivering customer-facing products at scale.</li><li>
Bring a strong technical background and remain comfortable discussing architecture, system design, API integrations, and modern application development.</li><li>
Have experience building or leading teams responsible for mobile applications, productivity tooling, desktop integrations, or workflow-centric products.</li><li>
Understand the challenges of API-first architectures and integrating multiple platform services into cohesive customer experiences.</li><li>
Have experience delivering AI-powered product experiences and understand how AI can be embedded into real user workflows.</li><li>
Are deeply product-minded and can translate customer problems, business goals, and technical constraints into effective solutions.</li><li>
Have experience working across multiple engineering domains and building strong partnerships with product, design, platform, AI, and data teams.</li><li>
Are passionate about coaching and developing engineers, helping them grow both technically and professionally.</li><li>
Use metrics, customer feedback, and business outcomes to guide decision-making and prioritisation.</li><li>
Have a track record of balancing engineering quality with fast, iterative delivery.</li><li>
Are comfortable operating in ambiguity and helping teams navigate evolving product and technical requirements.</li><li>
Care deeply about creating products that customers rely on every day.</li></ul><h3 class="jobSectionHeader">
Particularly Valuable Experience</h3><ul><li>
Building mobile-first or multi-surface product experiences.</li><li>
Microsoft Office Add-ins, excel integrations, or other productivity tooling.</li><li>
AI-native product development.</li><li>
Notification-driven products and engagement systems.</li><li>
Content-rich, workflow-heavy B2B SaaS products.</li><li>
Financial services, market data, research, or information products.</li><li>
Scaling teams through periods of rapid product and organisational growth.</li></ul><h2 class="jobSectionHeader">
Benefits</h2>
We&rsquo;re a scaling start up, and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel.
Financial &amp; Insurance<ul><li>
Competitive Salary (our salary bands are benchmarked at the top end of the market)</li><li>
Equity</li><li>
Pension (your minimum contributions are 4% with 9fin matching up to 7%)</li><li>
Private Medical Insurance</li><li>
Paid sick leave with Income Protection for long periods of illness</li><li>
Group Life Assurance</li><li>
Season Ticket Loan &amp; Cycle to Work schemes</li></ul>
Time off<ul><li>
25 holiday days per year</li><li>
Local public holidays (with the ability to exchange them for alternative days)</li><li>
Hybrid working model, to allow you the flexibility to decide how, where and when you do your best work</li><li>
Work abroad for up to 3 months a year</li><li>
1 month paid sabbatical after 5 years of service</li><li>
Enhanced parental leave &amp; flexible working arrangements available</li></ul>
Training &amp; Culture<ul><li>
Professional learning and development budget</li><li>
Quarterly team socials</li><li>
Summer and Winter company social events</li></ul>
9fin is an equal opportunities employer
At 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can reach their full potential and truly belong. We recognize that building diverse teams enables a more creative and productive environment. If you&rsquo;re excited about this role but your experience doesn&rsquo;t perfectly align with the job description, we encourage you to apply anyway. You might just be who we&rsquo;re looking for &mdash; either for this role, or perhaps another.</div>

Engineering Lead II

<div>About 9fin
9fin is the AI platform powering global debt markets &mdash; the world&rsquo;s largest asset class at over $145 trillion.
Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis, and high-value workflows across global markets.
Today, 9fin powers teams at 300+ blue-chip institutions worldwide, including global banks, asset managers, private equity firms, law firms, and advisors. The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption.
We&rsquo;re at a defining inflection point. With proven product-market fit and strong, global market pull, 9fin is accelerating toward becoming the category-defining platform for debt markets worldwide.<h1 class="jobSectionHeader">
The Opportunity</h1> 
Our retrievals team is responsible for making millions of financial documents (bond deals, credit reports, legal filings, earnings transcripts) searchable and retrievable across the platform. The search layer powers every AI application we build, and the quality of retrieval directly affects product quality for our clients.
We're hiring a Senior Search Engineer to own and shape our search platform (not to maintain what exists, but to decide how it evolves).
This means you will:<ul><li>
Own the search platform. Design, operate, and evolve the Elasticsearch cluster and its surrounding infrastructure. You'll make the architectural decisions about how documents are indexed, searched, and served, and you'll be accountable for the system's performance, reliability, and relevance at scale.</li><li>
Build the tooling and APIs that other teams depend on. Backend, AI, and data engineering teams across 9fin build on top of the search platform. You'll design the interfaces, services, and guardrails that make the retrieval layer usable, reliable, and self-service where possible.</li><li>
Shape the search strategy. Work with product and engineering leadership to understand where search and retrieval need to go, including how the platform supports 9fin's expanding AI capabilities. You'll have direct input into the technical roadmap.</li><li>
Raise the bar. Run code reviews, mentor engineers, contribute to architectural discussions, and bring strong opinions about how search systems should be built. You'll be a senior IC with real influence on engineering standards.</li></ul><h2 class="jobSectionHeader">
What we're looking for:</h2>
You must have:<ul><li>
Production ownership of a search platform built on Elasticsearch, OpenSearch, or a closely related technology (Solr, Vespa, Lucene). Not just usage &mdash; you've been responsible for how the system is designed, operated, and scaled. You understand internals like mappings, analyzers, shard strategies, and cluster behaviour because you've had to make real decisions about them.</li><li>
Experience designing and building search infrastructure &mdash; the data pipelines that feed it, the APIs that expose it, and the operational tooling that keeps it healthy. You've thought about relevance tuning, query performance, index lifecycle, and failure recovery in a production context.</li><li>
The ability to build for other engineers. You've created tooling, APIs, or platform capabilities that internal teams use. You understand what it takes to make a complex system accessible and reliable for people who aren't search specialists.</li><li>
Strong collaboration across teams. You've worked with product managers, data engineers, or other engineering teams to translate their needs into search platform capabilities. You can explain technical trade-offs clearly to non-technical stakeholders.</li></ul> 
It would be great if you also have:<ul><li>
Experience with Python and modern web frameworks (we use FastAPI with strong typing and Pydantic &mdash; but we'd rather hire the right search engineer and have them pick up the language than compromise on search depth).</li><li>
Familiarity with distributed systems concepts &mdash; consistency, partitioning, replication &mdash; and how they apply to search infrastructure under load.</li><li>
Experience with cloud-managed search deployments (we run on Elastic Cloud / AWS).</li><li>
Exposure to how search and retrieval intersect with AI/ML systems &mdash; vector search, hybrid retrieval, or RAG pipelines.</li></ul><h2 class="jobSectionHeader">
Our stack</h2>
Python (Flask &amp; FastAPI), PostgreSQL, AWS (Lambda, ECS, Docker), Elastic Cloud. We have our own internal developer platform with standardised paved-road approaches to infrastructure, managed preview environments, and feature flags &mdash; so you can ship with confidence and iterate quickly.<h2 class="jobSectionHeader">
Benefits</h2>
We&rsquo;re a scaling start up and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel.
Financial &amp; Insurance<ul><li>
Competitive Salary (our salary bands are benchmarked at the top end of the market)</li><li>
Equity options</li><li>
Pension (your minimum contributions are 4% with 9fin matching up to 7%)</li><li>
Private Medical Insurance</li><li>
Paid sick leave with Income Protection for long periods of illness</li><li>
Group Life Assurance</li><li>
Season Ticket Loan &amp; Cycle to Work schemes</li></ul>
Time off<ul><li>
25 holiday days per year</li><li>
Local public holidays (with the ability to exchange them for alternative days)</li><li>
Hybrid working model, to allow you the flexibility to decide how, where and when you do your best work</li><li>
Work abroad for up to 3 months a year</li><li>
1 month paid sabbatical after 5 years of service</li><li>
Enhanced parental leave &amp; flexible working arrangements available</li></ul>
Training &amp; Culture<ul><li>
Professional learning and development budget</li><li>
Quarterly team socials</li><li>
Summer and Winter company social events</li></ul>
9fin is an equal opportunities employer
At 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can reach their full potential and truly belong. We recognize that building diverse teams enables a more creative and productive environment. If you&rsquo;re excited about this role but your experience doesn&rsquo;t perfectly align with the job description, we encourage you to apply anyway. You might just be who we&rsquo;re looking for &mdash; either for this role, or perhaps another.</div>

Senior Software Engineer (Search Platform)

<div>About 9fin
9fin is the AI platform powering global debt markets &mdash; the world&rsquo;s largest asset class at over $145 trillion.
Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis, and high-value workflows across global markets.
Today, 9fin powers teams at 300+ blue-chip institutions worldwide, including global banks, asset managers, private equity firms, law firms, and advisors. The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption.
We&rsquo;re at a defining inflection point. With proven product-market fit and strong, global market pull, 9fin is accelerating toward becoming the category-defining platform for debt markets worldwide.<h2 class="jobSectionHeader">
We're looking for a Principal Engineer to own the hardest technical problems at 9fin &mdash; the ones that cut across teams, don't belong cleanly to any single domain, and have the highest consequence if they go wrong.</h2>
9fin sits at the intersection of financial data and AI. We ingest, model, and surface complex debt capital markets intelligence at scale. What we need now is someone who works across all of our areas (from AI, to Analytics, Platform, and Product Engineering) &mdash; setting the architectural standard, owning the foundational problems nobody else owns, and being the senior technical voice that makes the whole thing cohere.
This is not a domain lead role. It's not advisory either. It's for someone who is energised by complexity and ambiguity, who wants to own the problems that are genuinely hard, and who can move between deep technical work and cross-org influence without losing credibility in either direction.<h2 class="jobSectionHeader">
What you'll own</h2>
These are the cross-cutting problems that don't belong cleanly to any one team &mdash; but that everything else depends on.
Core data model and entity resolution
9fin's value depends on how well we understand financial entities and the relationships between them &mdash; issuers, instruments, deals, counterparties, legal documents. This is hard: data is messy, sources conflict, and the model has to serve analytics, AI, and product simultaneously. You'll own the decisions that shape this foundation and hold the standard for how we model and resolve financial data at scale.
Foundational architectural decisions
When a decision is big enough to affect multiple teams and long-lived enough to be hard to undo, it lands with you. You'll write the RFCs, facilitate the debate, make the call, and be accountable for the outcome.<h2 class="jobSectionHeader">
What you'll oversee</h2>
You'll work closely with the Heads/Directors of Analytics, AI, Platform, and Product Engineering &mdash; not to run their domains, but to raise the bar across all of them.<ul><li>
Bring architectural coherence to decisions made within individual domains</li><li>
Identify technical risks and compounding complexity before they become incidents</li><li>
Set standards for engineering quality &mdash; system design, observability, reliability, API design &mdash; that every team builds to</li><li>
Be the senior technical voice in cross-team planning, roadmap discussions, and major build vs. buy decisions</li><li>
Mentor and stretch the most senior engineers across the org</li></ul><h2 class="jobSectionHeader">
What we're looking for</h2>
You're the person who:<ul><li>
Has operated at principal or staff level in a data-intensive, fast-moving engineering org &mdash; and has the range to show for it</li><li>
Can credibly walk into a conversation about data pipeline architecture, RAG evaluation, API design, or system scalability &mdash; and add something useful in all of them</li><li>
Owns problems, not just opinions. You're not here to review and advise; you're here to make calls and be accountable for them</li><li>
Writes code when it matters &mdash; the proof of concept that validates a direction, the deep dive that unblocks the team, the PR that sets the standard others build from</li><li>
Has strong opinions about what good engineering looks like and can defend them without being precious about being wrong</li><li>
Is energised by the problems nobody else can solve, not unsettled by them</li></ul>
Technical bar:<ul><li>
Deep experience with complex data modelling, entity resolution, and data pipelines in production environments</li><li>
Proven experience designing and shipping AI/LLM systems &mdash; RAG, structured extraction, evaluation frameworks &mdash; beyond the prototype stage</li><li>
Strong backend and distributed systems knowledge: APIs, service architecture, scalability, observability</li><li>
Experience making and owning foundational architectural decisions that affected how an entire engineering org worked</li><li>
Proficiency in Python; comfort across the stack where it matters</li></ul>
Nice to have:<ul><li>
Experience with financial data, legal documents, or other semi-structured, domain-rich datasets</li><li>
Background as a founding engineer, early-stage CTO, or technical lead who has built systems from scratch and lived with the consequences</li></ul><h2 class="jobSectionHeader">
Why this role</h2><ul><li>
The problems you'll own are genuinely hard &mdash; messy financial data, complex entity relationships, AI systems where correctness really matters</li><li>
You'll have real authority over foundational decisions, not just influence over them</li><li>
9fin's engineering org is strong and growing &mdash; you'll be working with and stretching great engineers, not compensating for weak ones</li><li>
High ownership, high impact, and the chance to shape how a serious data and AI company scales its technical foundations</li></ul>
Benefits
We&rsquo;re a scaling start up and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel.
Financial &amp; Insurance<ul><li>
Competitive Salary (our salary bands are benchmarked at the top end of the market)</li><li>
Equity options</li><li>
Pension (your minimum contributions are 4% with 9fin matching up to 7%)</li><li>
Private Medical Insurance</li><li>
Paid sick leave with Income Protection for long periods of illness</li><li>
Group Life Assurance</li><li>
Season Ticket Loan &amp; Cycle to Work schemes</li></ul>
Time off<ul><li>
25 holiday days per year</li><li>
Local public holidays (with the ability to exchange them for alternative days)</li><li>
Hybrid working model, to allow you the flexibility to decide how, where and when you do your best work</li><li>
Work abroad for up to 3 months a year</li><li>
1 month paid sabbatical after 5 years of service</li><li>
Enhanced parental leave &amp; flexible working arrangements available</li></ul>
Training &amp; Culture<ul><li>
Professional learning and development budget</li><li>
Quarterly team socials</li><li>
Summer and Winter company social events</li></ul>
9fin is an equal opportunities employer
At 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can reach their full potential and truly belong. We recognize that building diverse teams enables a more creative and productive environment. If you&rsquo;re excited about this role but your experience doesn&rsquo;t perfectly align with the job description, we encourage you to apply anyway. You might just be who we&rsquo;re looking for &mdash; either for this role, or perhaps another.</div>

Principal Engineer

<div>About 9fin
9fin is the AI platform powering global debt markets &mdash; the world&rsquo;s largest asset class at over $145 trillion.
Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis, and high-value workflows across global markets.
Today, 9fin powers teams at 300+ blue-chip institutions worldwide, including global banks, asset managers, private equity firms, law firms, and advisors. The business is scaling at exceptional speed, with rapid expansion in the US and best-in-class retention driven by deep workflow adoption.
We&rsquo;re at a defining inflection point. With proven product-market fit and strong, global market pull, 9fin is accelerating toward becoming the category-defining platform for debt markets worldwide.<h2 class="jobSectionHeader">
The Opportunity</h2>
The Data Science team is growing at 9fin! We are doing world-class work with groundbreaking technologies to build data-driven products using machine learning, computer vision, natural language processing, speech and audio, and knowledge/data mining. We are looking for a Senior AI Engineer to accelerate our application of AI across teams and products. Come and join us, you will get to build large-scale AI powered systems, learn and apply the latest techniques, and work alongside other great researchers and engineers!
Every day is different, but here's an example of the kind of things you'll work on:<ul><li>
Design and build generative AI applications tailored to complex financial and legal workflows, leveraging state-of-the-art models to deliver innovative, practical solutions that streamline decision-making and unlock new efficiencies.</li><li>
Drive end to end model development lifecycle, leading the team in best practices, ensuring reproducible research and well managed model delivery/deployment.</li><li>
Collaborate cross functionally to share diverse ideas, understand business problems, and elevate/mentor your teammates.</li><li>
Translate complex problems into well-defined scoped bets in an internal startup style environment, dynamic and fast-paced.</li><li>
Learn and apply ground-breaking research and approaches in advanced topics, iterating improvements with a fail fast mentality.</li><li>
Be a proactive sharer of compelling ideas/work to the rest of the team and organisation. We want you to help lead/push the adoption of AI throughout 9fin.</li></ul><h3 class="jobSectionHeader">
What Makes This Role Different</h3>
This role is focused on deciding what information each user should see, in what order, and at what moment. While experience with retrieval systems, knowledge graphs, and LLMs is valuable, the core challenge is learning from user behaviour, workflow context, and content signals to optimise discovery, prioritisation, and decision-making across feeds, alerts, search, and AI experiences.<h2 class="jobSectionHeader">
About You</h2>
This role will be a great fit if you:<ul><li>
Deep experience building recommendation systems across feeds, alerts, search, and workflow products. Strong understanding of candidate generation, personalisation, ranking, and next-best-action systems.</li><li>
Learning to Rank: Expertise with pointwise, pairwise, and listwise ranking approaches, including reranking, diversity, freshness, novelty, deduplication, and relevance optimisation.</li><li>
User Modelling &amp; Behavioural ML: Experience modelling user intent, preferences, workflows, and engagement patterns. Familiarity with session-based learning, sequence modelling, and balancing short-term versus long-term user interests.</li><li>
Product Analytics &amp; Telemetry: Strong understanding of behavioural instrumentation, including impression logging, clicks, dwell time, follows, saves, alert interactions, and event design that supports robust learning systems.</li><li>
Experimentation &amp; Evaluation: Experience designing and analysing A/B tests, defining success metrics, understanding selection bias, and evaluating ranking systems using both online and offline methodologies.</li><li>
Feature Engineering &amp; Applied Machine Learning: Strong background in feature engineering, tabular machine learning, calibrated scoring systems, and production use of models such as gradient-boosted trees, logistic regression, and related approaches.</li><li>
Content-Aware Recommendation Systems: Experience combining embeddings, semantic similarity, collaborative signals, and content understanding to build recommendation systems that perform well in sparse and cold-start environments.</li><li>
Graph &amp; Entity-Aware Ranking: Ability to incorporate relationships between companies, sponsors, lenders, law firms, instruments, documents, and events into ranking and recommendation decisions.</li><li>
Production ML Engineering: Experience building feature pipelines, online and batch inference systems, low-latency ranking services, experimentation platforms, and monitoring for production machine learning systems.</li><li>
Strong proficiency in Python for production ready delivery.</li></ul><ul><li>
You have a strong product focus with a desire to understand the end-to-end impact of your solutions for our end users.</li><li>
Good knowledge of AWS&rsquo;s AI infrastructure.</li></ul><h2 class="jobSectionHeader">
Benefits</h2>
We&rsquo;re a scaling start up, and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel.
Financial &amp; Insurance<ul><li>
Competitive Salary (our salary bands are benchmarked at the top end of the market)</li><li>
Equity</li><li>
Pension (your minimum contributions are 4% with 9fin matching up to 7%)</li><li>
Private Medical Insurance</li><li>
Paid sick leave with Income Protection for long periods of illness</li><li>
Group Life Assurance</li><li>
Season Ticket Loan &amp; Cycle to Work schemes</li></ul>
Time off<ul><li>
25 holiday days per year</li><li>
Local public holidays (with the ability to exchange them for alternative days)</li><li>
Hybrid working model, to allow you the flexibility to decide how, where and when you do your best work</li><li>
Work abroad for up to 3 months a year</li><li>
1 month paid sabbatical after 5 years of service</li><li>
Enhanced parental leave &amp; flexible working arrangements available</li></ul>
Training &amp; Culture<ul><li>
Professional learning and development budget</li><li>
AI experimentation budget of &pound;800 (UK) per employee to trial AI tools</li><li>
Quarterly team socials</li><li>
Summer and Winter company social events</li></ul>
9fin is an equal opportunities employer
At 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can reach their full potential and truly belong. We recognize that building diverse teams enables a more creative and productive environment. If you&rsquo;re excited about this role but your experience doesn&rsquo;t perfectly align with the job description, we encourage you to apply anyway. You might just be who we&rsquo;re looking for &mdash; either for this role, or perhaps another.</div>

Senior AI Engineer - Recommendation and Personalisation

Join 9fin and explore 8   exciting career opportunities. They're hiring for various roles with options for remote or on-site work. Apply today and become part of their innovative team.