software engineer

machine learning engineer

ai engineer

devops engineer

senior software engineer

backend software engineer

SIGNAL

<div>About Signal Ocean: 
 
Signal Ocean is the technology arm of the Signal Group, providing market-leading advanced machine learning and AI-driven intelligence to shipping and commodities professionals worldwide. Our platform delivers tailored, exclusive insights through web, mobile, and API interfaces, enabling clients to make faster, better-informed commercial decisions.
Signal Ocean has recently acquired AXSMarine, a business with over 25 years of experience in the freight and commodities space - and is actively integrating the two companies. The combined business now offers the most comprehensive suite of freight market intelligence available, and we are actively building the team to realise the full potential of the integration.
About the role 
 
As the Signal Ocean Platform continues to grow, we&rsquo;re expanding our engineering team. We&rsquo;re looking for a Software Engineer capable of building and maintaining scalable back-end data services (primarily in Python) within the Modelling &amp; Data Services team. Signal&rsquo;s Software Engineers work closely with data science, design, product, and business analysis professionals to develop robust solutions for the highly entrepreneurial domain of shipping.
Technology stack: We build cloud solutions using C#, .NET Core, Typescript, React, MSSQL Server, Azure, Python, MongoDB, Redis, Docker, Kubernetes, Grafana and more. We also offer the opportunity to work on complex architectures and technology stacks, as well as a global AI-powered tech product vision, supported by the use of multiple AI tools and accelerators. We use Agile to organize our teams and would love to onboard people who can contribute across product discovery, delivery, optimization, QA, DevOps, and Continuous Integration.
Key Responsibilities:<ul><li>
Design and develop efficient, production-ready backend services &ndash; Transform prototypes and specifications into robust, scalable Python microservices that meet quality standards, performance requirements, and monitoring best practices</li><li>
Collaborate with data scientists and analysts &ndash; Act as a technical implementation partner, taking research prototypes and converting them into production-grade code with proper testing, error handling, and observability</li><li>
Maintain existing microservices &ndash; Investigate production issues, implement fixes, and enhance monitoring capabilities across the freight solutions backend ecosystem</li><li>
Ensure code quality and best practices &ndash; Write well-tested, documented code following software engineering standards; conduct code reviews and establish quality benchmarks for the team</li></ul> 

Requirements 
<ul><li>
3+ years professional software engineering experience</li><li>
Strong CS fundamentals (data structures, algorithms, system design)</li><li>
Python / FastAPI for server-side development</li><li>
SQL database experience</li><li>
Docker, Kubernetes, and CI/CD pipelines</li><li>
Strong debugging and problem-solving abilities</li><li>
Effective use of AI tools in development workflow</li><li>
Excellent English communication (written &amp; verbal)</li><li>
Comfortable with ambiguity and changing requirements in an experimental environment</li></ul>
Nice-to-have Skills: 
<ul><li>
C# / .NET</li><li>
Experience working in Data Science or Data Engineering teams</li></ul> 

Benefits 
<ul><li>
Generous compensation with additional performance incentives.</li></ul><ul><li>
Coverage under the company&rsquo;s collective health insurance plan.</li><li>
Opportunity to work alongside experienced people with deep knowledge in software engineering, data science &amp; shipping business who are always eager to mentor.</li><li>
Signal&rsquo;s hybrid work policy currently includes 9 on-site working days per month, during which our happy hour events take place.</li><li>
2-4 weeks of onboarding training to prepare you for your new role, having the opportunity to meet about 30 trainers while diving deep into our products and/or the shipping world.</li><li>
Career growth opportunities and a structured development discussion every 4 months.</li><li>
Personal learning budget for training, seminars, conferences (750 to 2000 EUR annually depending on seniority).</li><li>
Regular team bonding events and activities.</li><li>
Fitness benefits to support your health and wellbeing</li></ul>
All applications will be considered under the terms and conditions of confidentiality in accordance with the regulations of personal data protection.
We are an Equal Opportunity Employer committed to diversity and inclusion in the workplace. At Signal, we believe that diversity of opinions, approaches and viewpoints is key to our innovation and success and we encourage that with our hiring, development and rewards practices. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristics by law and take actions to eliminate those from our workplace.</div>

Backend Software Engineer (Python)

Jack & Jill

<div>
 
 This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.
 
 
 
 She will pick the best candidates from Jack's network.
 
 
 The next step is to speak to Jack.
 
 
 
 Job Title
 
 
 
 Senior Backend Software Engineer
 
 
 
 Salary
 
 
 
 &pound;100k&ndash;&pound;140k + Equity
 
 
 
 Company Description
 
 
 
 Fleek is a ~$50M Series B startup backed by a16z and Y Combinator, building the AI-native infrastructure for the $350B global secondhand fashion market.
 
 
 
 Job Description
 
 
 
 You will join the Growth squad to own the core ecommerce journey, building backend systems for discovery, payments, and seller tools. Reporting to the CTO, you'll integrate the proprietary FleekSort AI classification engine into a marketplace handling millions of items. This role is about digitizing a broken, manual supply chain at global scale.
 
 
 
 Location
 
 
 
 London, UK
 
 
 
 Why this role is remarkable
 
 
 
 <ul>
 <li>
 Work on a genuinely novel technical challenge by integrating FleekSort, a custom AI model (not a GPT wrapper) that digitizes opaque secondhand inventory.
 </li>
 <li>
 Join a hyper-growth company tripling year-on-year with ~$50M in funding from top-tier investors like a16z, Y Combinator, and HV Capital.
 </li>
 <li>
 Deliver massive environmental impact by building systems that have already saved 9 million items from landfills and are scaling to serve thousands of global retailers.
 
 
 </li>
 </ul>
 
 What You Will Do
 
 
 
 <ul>
 <li>
 Architect and own the end-to-end ecommerce journey, including item discovery, search, multi-currency payment systems, and credit infrastructure.
 </li>
 <li>
 Design and scale backend services to handle over 1 million unique items per month, connecting AI grading engines to real-time marketplace workflows.
 </li>
 <li>
 Collaborate in a senior product squad to translate complex international logistics and supply chain challenges into reliable, high-performance software.
 
 
 </li>
 </ul>
 
 The ideal candidate
 
 
 
 <ul>
 <li>
 Has 6-10 years of professional backend experience, ideally using Node.js and TypeScript, with a proven track record of shipping high-traffic production systems.
 </li>
 <li>
 Possesses a product engineering mindset from a consumer-facing marketplace or fintech background, focusing on commercial outcomes rather than just infrastructure.
 </li>
 <li>
 Thrives in early-stage, fast-paced environments (Seed to Series B) and utilizes AI tools like Cursor or Copilot as a force multiplier in their workflow.
 
 
 </li>
 </ul>
 
 Who are Jack &amp; Jill?
 
 
 
 Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
 
 
 And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
 
 
 
 How does this work?
 
 
 
 <ul>
 <li>
 Jack's an AI agent for job searching and career coaching. He works for you.
 </li>
 <li>
 Jill is the AI recruiter working for the company. She recruits from Jack's network.
 </li>
 <li>
 If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
 
 
 </li>
 </ul>
 
 We never post fake jobs
 
 
 
 This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
 
 
 Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
 
 
 We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
 
 
 Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.
 
 
</div>

Senior Backend Software Engineer (£100k–£140k + Equity) at Fleek

<div>
 Position Description
 
 
 We're looking for a Software Engineer with experience in workflow orchestration and backend development to join our engineering team. This role is ideal for engineers who enjoy building scalable distributed systems while designing and implementing complex business workflows using Camunda and Spring Boot microservices.
 
 
 You'll work across the full software lifecycle - from modelling and orchestrating business processes, to building resilient microservices and operating reliable, secure backend platforms in on-premise enterprise environments.
 
 
 Your future duties and responsibilities
 
 
 <ul>
 <li>
 Design and develop workflow-driven backend systems using Camunda BPM and Spring Boot microservices
 </li>
 <li>
 Build and maintain scalable RESTful and event-driven services that integrate into larger distributed platforms
 </li>
 <li>
 Model, implement, and optimise business processes and orchestration flows using BPMN
 </li>
 <li>
 Write clean, maintainable, and well-tested production code using modern engineering practices
 </li>
 <li>
 Own services end-to-end, including deployment, monitoring, support, and operational health
 </li>
 <li>
 Build and improve CI/CD pipelines and automated delivery workflows
 </li>
 <li>
 Collaborate closely with platform, frontend, DevOps, and security teams to deliver integrated solutions
 </li>
 <li>
 Contribute to architecture discussions around orchestration, scalability, resiliency, and performance
 </li>
 <li>
 Troubleshoot production workflow and integration issues while continuously improving reliability and observability
 
 
 </li>
 </ul>
 
 Required Qualifications To Be Successful In This Role
 
 
 
 <ul>
 <li>
 Strong experience as a backend software engineer
 </li>
 <li>
 Hands-on experience building Spring Boot microservices in production environments
 </li>
 <li>
 Experience designing and building RESTful APIs and asynchronous/event-driven integrations
 </li>
 <li>
 Proficiency in Java and modern backend development practices
 </li>
 <li>
 Strong understanding of distributed systems, microservice patterns, and service-to-service communication
 </li>
 <li>
 Experience with containerised environments and orchestration platforms (Docker, Kubernetes, OpenShift, etc.)
 
 
 </li>
 </ul>
 Security Clearance
 
 
 <ul>
 <li>
 Candidates must be willing and able to work onsite at the client location five days per week. Hybrid or remote working arrangements are not available for this role.
 </li>
 <li>
 Candidates must hold current HLC clearance, or be eligible and willing to obtain and maintain HLC clearance, subject to client requirements.
 </li>
 <li>
 Previous experience working within secure, government, defence, or highly regulated environments will be highly regarded.
 </li>
 <li>
 Due to client security requirements, only candidates who meet the applicable clearance criteria will be considered.
 
 
 </li>
 </ul>
 
 Together, as owners, let&rsquo;s turn meaningful insights into action.
 
 
 
 Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you&rsquo;ll reach your full potential because&hellip;
 
 
 You are invited to be an owner from day 1 as we work together to bring our Dream to life. That&rsquo;s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company&rsquo;s strategy and direction.
 
 
 Your work creates value. You&rsquo;ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.
 
 
 You&rsquo;ll shape your career by joining a company built to grow and last. You&rsquo;ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.
 
 
 Come join our team&mdash;one of the largest IT and business consulting services firms in the world.
 
 
</div>

Software Engineer

nplan

<div>Salary: &pound;75-90k
Location: UK Remote, with minimal office travel required (1-2x per month)<h3 class="jobSectionHeader">
Ready to reshape one of the world&rsquo;s largest industries?</h3>
nPlan has built a unique AI platform that helps some of the largest construction companies better understand their projects, avoid delay risks, and improve the cost and delivery time of some of the most important infrastructure projects.<h3 class="jobSectionHeader">
The role:</h3>
You will work in a collaborative backend engineering team that owns the systems that power our platform. You will design, implement and build new capabilities that are performant, dependable, and extensible.<h3 class="jobSectionHeader">
What you&rsquo;ll do:</h3>
Spin your skills on the backend:<ul><li>
Design, build and deploy new backend capabilities: our customers are always asking for more, and especially more sophisticated AI systems. Help us stay on the cutting edge.</li><li>
Lead technical delivery: propose designs, evaluate trade-offs, drive changes from design to deployment. Don&rsquo;t be afraid to point out where we can and should be better.</li><li>
Improve operations: observability, incident response, performance, scaling, automation. We hate finding and dealing with bugs. You should too.</li><li>
Please mention the word &lsquo;crane&rsquo; in your application</li></ul><h3 class="jobSectionHeader">
Our stack</h3>
We hire people who are generally language and stack-agnostic. We just ask that you are highly motivated to learn<ul><li>
Languages: Python, Go, Typescript</li><li>
APIs: GQL, gRPC, REST</li><li>
Databases: Postgresql, Vector DBs, BigQuery, blob storage</li><li>
Async: Vertex AI, GCP pub/sub</li><li>
Deployment: GCP, Kubernetes, ArgoCD, Github Actions</li><li>
Operations: Prometheus, Grafana, Sentry</li></ul><h3 class="jobSectionHeader">
What we&rsquo;re looking for</h3><ul><li>
We're building software that changes how the world plans and delivers infrastructure at scale. The problems are hard, the stakes are real, and the path isn't always clear - you're energised by that, not slowed down by it.</li><li>
Three-plus years of owning scalable, real-world systems. You know what breaks at 3am and why, and you've built things that don't. Kubernetes in a cloud environment is part of your toolkit we use at nPlan.</li><li>
You can take a blank page and design something reliable, testable, and scalable - not because you followed a framework, but because you understand the trade-offs well enough to make the right calls for the problem in front of you.</li><li>
Data modelling, indexing strategy, production-level migrations that don't wake anyone up - you treat the database as a first-class concern. You know what a slow query costs and you don't leave them lying around.</li><li>
You don't just write tests because you're supposed to. You write them because you've seen what happens when you don't. You'd raise the bar here, not just meet it.</li><li>
You understand attack surfaces and common vulnerabilities. If you've worked inside a SOC- or ISO-accredited company, that's a genuine plus - we take this seriously and you would too.</li><li>
Coding agents, LLMs, whatever gets the job done well and quickly is how we work - you've integrated these into how you work and you're thoughtful about where they help and where they need a human in the loop - that's brilliant, tell us more!</li><li>
You know a good review isn't about nit-picking style - it's a quality gate. With coding agents producing more code faster, this skill matters more than ever, and you treat it that way.</li></ul><h3 class="jobSectionHeader">
You might be our person if you&hellip;</h3><ul><li>
Build reliable backend systems: You&rsquo;ve designed, shipped, and operated production services and APIs that real users depend on.</li><li>
Think in distributed systems: You&rsquo;re comfortable with queues, retries, idempotency, consistency trade-offs, and failure modes.</li><li>
Care about operability: You set a high bar for observability (logs/metrics/traces), on-call readiness, incident response, and performance tuning.</li><li>
Model and work with data: You write strong SQL and understand indexing, migrations, data modelling, and referential integrity.</li><li>
Code with confidence: You build clean, well-tested services (unit/integration tests) and can work effectively in a modern backend stack (e.g., Python, Go, Typescript).</li><li>
Thrive in autonomy: You enjoy taking ambiguous problems, clarifying requirements, and driving work to a shippable solution.</li></ul><h3 class="jobSectionHeader">
What working at nPlan will be like</h3>
We are still a relatively small team, so there is plenty of opportunity for a high degree of ownership and growth over different areas of the product, and you will be directly exposed to all areas of the business.<ul><li>
Remote working, with minimal requirements to come to the Shoreditch office 1-2 times per month, and attend quarterly company get-togethers</li><li>
Your voice will always be heard. What you do or say counts, not who you are or where you're from. We are a cross-disciplinary team, and come from all backgrounds and cultures.</li><li>
We have three core values that underlie everything we do:<ul><li>
Learn from Everything</li><li>
Be Radically Truthful</li><li>
Aim High, Run Fast.</li><li>
These enable us to create a collaborative, inclusive environment where we can move effectively and efficiently to implement the best solutions.</li></ul></li><li>
Fantastic benefits package for Health &amp; Wellbeing, Learning &amp; Development, family leave, and more.</li><li>
Having time to yourself and a private life is important. We offer a very flexible work environment and a generous holiday policy.</li></ul>
We are working hard to create a workplace that is inclusive to everyone, no matter their background, or where they are in life. We believe that only a truly diverse place can create great products that serve a wide audience and improve the world.
We believe in equality of opportunities and that's why we make sure that these ideas are reflected in our values, and that we really apply these in all aspects of our company culture.
If you have a need for any adjustments during our interview process, let us know and we will do our best to accommodate them.<h3 class="jobSectionHeader">
Hiring process</h3><ul><li>
Intro call (Recruiter) (15min)</li><li>
Skill Set interview (Engineering Manager) (15-30min)</li><li>
Practical exercise (Engineering Manager &amp; Backend Engineer) (60 min)</li><li>
Values Alignment call (60min)</li><li>
On-site (half a day, can be remote)</li></ul>
Apply
If this sounds like you, we&rsquo;d love to hear from you!</div>

Backend Engineer

<div>
 
 
 Our Mission
 
 
 
 
 We're not your average benefits platform; we're the unordinary force that uplifts people's lives. Our technology is the link that connects the entire benefits ecosystem, creating better outcomes for employers, employees, brokers, and providers.
 
 
 Our mission is clear: we're here to create a world where everything operates at its very best, ensuring that every employee receives the support they need to live life to the fullest, both at work and beyond.
 
 
 
 
 Your Mission
 
 
 
 
 As a backend leaning
 
 Full-stack Engineer
 
 at Ben, you&rsquo;ll help build and scale the features that power our platform from benefits browsing and payments to provider integrations and smart admin tooling.
 
 
 You&rsquo;ll take features from idea to production: understanding the problem, scoping solutions, building, shipping, and making sure what you deliver truly solves the need. You won&rsquo;t just be handed tickets, you'll contribute to shaping
 
 why
 
 we build things,
 
 how
 
 we build them, and
 
 what
 
 the future of our product looks like.
 
 
 You&rsquo;ll collaborate across product, design, and engineering to make decisions that matter: data models, integration patterns, API design, scalability choices, and how we support a system used by hundreds of thousands of people. At Ben, everything is connected so what you build helps power payroll workflows, provider integrations, notifications, and everything in between.
 
 
 And you&rsquo;ll do all this as part of a fun, fast-moving startup, spending
 
 2 days a week with the team in our Barbican office
 
 .
 
 
 
 
 Things you will be working on&hellip;
 
 
 
 
 <ul>
 <li>
 Build and ship backend-leaning fullstack features across the product (APIs, services, integrations, and React frontend)
 </li>
 <li>
 Are pragmatic and can balance shipping fast with thoughtful engineering
 </li>
 <li>
 Work closely with product managers to understand context and shape solutions early
 </li>
 <li>
 Collaborate with designers to create polished, intuitive experiences
 </li>
 <li>
 Contribute to technical discovery, architecture thinking, and implementation planning
 </li>
 <li>
 Ask product and UX questions when something doesn't quite add up
 </li>
 <li>
 Design with scale, reliability, and enterprise readiness in mind (security, compliance, flexibility)
 </li>
 <li>
 Own your work from idea to production and care about the impact once it&rsquo;s live
 </li>
 <li>
 Help improve developer experience, tooling, and internal standards
 </li>
 <li>
 Ensure security best practices (OWASP, AWS Well-Architected, etc.) are embedded in how we ship software
 
 
 </li>
 </ul>
 
 
 You will thrive in this role if you&hellip;
 
 
 
 
 <ul>
 <li>
 Have strong experience building modern web apps, especially backend systems
 </li>
 <li>
 Are comfortable in Python and TypeScript (or excited to learn quickly)
 </li>
 <li>
 Care about solving real user problems, not just closing tasks
 </li>
 <li>
 Enjoy collaborating directly with PMs and designers without needing perfect specs
 </li>
 <li>
 Like figuring out the how with autonomy and the why with curiosity
 </li>
 <li>
 Know what it means to build for enterprise scale
 </li>
 <li>
 Are pragmatic able to balance scrappy shipping with thoughtful engineering
 </li>
 <li>
 Communicate clearly and enjoy working with friendly, ambitious people
 
 
 </li>
 </ul>
 
 
 Nice-to-haves, but not deal-breakers:
 
 
 
 
 <ul>
 <li>
 Experience with financial platforms, HR tech, or B2B SaaS
 </li>
 <li>
 Experience building reliable workflows with tools like Temporal
 
 
 </li>
 </ul>
 
 
 You will
 
 
 
 not
 
 
 
 love this role if you&hellip;
 
 
 
 
 <ul>
 <li>
 Prefer a slow or highly predictable pace we move quickly and value action
 </li>
 <li>
 Feel uncomfortable owning projects end-to-end and being accountable for outcomes
 </li>
 <li>
 Prefer maintaining the status quo we challenge assumptions and improve constantly
 </li>
 <li>
 Want a heavily structured environment we&rsquo;re still building processes as we grow
 </li>
 <li>
 Struggle with ambiguity or prefer prescriptive direction you&rsquo;ll get context, but you&rsquo;ll need to figure things out
 </li>
 <li>
 Wait for others to take initiative this is a proactive, high-performance team
 
 
 </li>
 </ul>
 
 Not sure if you meet 100% of the requirements?
 
 
 
 That&rsquo;s okay, careers aren&rsquo;t linear. If you have a strong technical foundation, solid backend experience, and enthusiasm for fullstack engineering in a fast-moving startup, we&rsquo;d love to hear from you. Just make sure you feel confident contributing meaningfully from day one.
 
 
 
 Our Compensation &amp; Benefits
 
 
 
 It&rsquo;s important to us to practise what we preach when it comes to our benefits. We know what good looks like and we want to provide the best for our team, with a comprehensive and inclusive benefits package. This means you have a choice over the things that are most important to you. You can see a selection below, along with the full offering here.
 
 
 
 
 💰
 
 
 Competitive base salary
 
 +
 
 equity,
 
 so you own what you build
 
 
 
 
 💳
 
 &pound;100 monthly personal Ben Balance:
 
 for whatever works for you, whether that's Netflix, Spotify, or a really expensive cup of coffee! This allowance will
 
 increase by &pound;50 for each year of service until you reach &pound;250
 
 
 
 
 
 🍔
 
 
 
 Weekly lunch provided in office
 
 so you can spend quality time with the team over some tasty food!
 
 
 
 
 🏖
 
 28 days of holidays
 
 a year plus bank holidays, and an option to
 
 buy or sell 5 days per year
 
 . Also, your holiday entitlement will
 
 increase to 30 days at your 3rd year of service!
 
 
 
 
 
 
 🌴 Work-from-abroad scheme,
 
 so you can support your travels, enjoy an extended holiday, or visit loved ones.
 
 
 
 
 
 🍼 Enhanced parental leave
 
 and
 
 workplace nursery scheme
 
 to support with the cost of childcare in a nursery setting
 
 
 
 
 ❤️
 
 Comprehensive
 
 
 Private Medical Insurance
 
 
 
 
 
 
 💌 Funded Life Assurance cover
 
 with the option to voluntarily increase - this also includes an annual health check
 
 
 
 
 
 🧠 Comprehensive and tailored mental health support and professional coaching
 
 through a leading provider
 
 
 
 
 
 Diversity and Culture at Ben
 
 
 
 
 We are organically growing a brilliantly diverse, inclusive and respectful bunch of people we are extremely proud of. This should go without saying but all applications are very much welcome. If you need any adjustments to support you with your application, just let us know by emailing jobs@thanksben.com. You can learn more about DEI at Ben here.
 
 
</div>

Fullstack Engineer (Backend leaning)

Navan

<div>We are looking for a Senior Backend Platform Developer to build modern services for Navan's contact center systems. This is a software engineering role first: where you will design APIs, serverless services, data flows, observability tooling, and AI-enabled workflows that support our customer and agent experience.

The contact center is the domain, but the core need is strong development capability. The right person is comfortable building production systems, integrating complex platforms, and using AI-assisted engineering tools to move quickly without sacrificing quality.

What You'll Do:
<ul>
<li>Production-grade Node.js services on AWS Lambda, API Gateway, and event-driven serverless patterns.</li>
<li>Secure APIs and integrations across internal systems, customer data, and third-party platforms.</li>
<li>Technical patterns, implementation standards, and reusable services for the broader contact center systems roadmap.</li>
<li>Observability pipelines using OpenSearch, CloudWatch, Kibana, Snowflake, and structured logging.</li>
<li>Automation and AI-enabled workflows that improve routing, agent support, troubleshooting, and operational visibility.</li>
<li>Migration tooling and services that help move legacy telephony and contact center workflows onto modern platforms, with enough design discipline to support future scale.</li>
</ul>
What We're Looking For
<ul>
<li>5+ years of backend software engineering experience, ideally with Node.js or TypeScript.</li>
<li>Strong API design, system architecture, integration, debugging, and asynchronous systems experience.</li>
<li>Hands-on experience with AWS Lambda or similar cloud/serverless architecture.</li>
<li>Experience with logging, monitoring, search, data pipelines, or production observability.</li>
<li>Practical use of AI coding assistants for development, testing, refactoring, and troubleshooting.</li>
<li>Fluency with GitHub workflows, including pull requests, code review, branching, and CI/CD collaboration.</li>
<li>Senior-level judgment to turn ambiguous operational problems into clean, maintainable technical solutions.</li>
</ul>
Helpful Domain Experience
<ul>
<li>Experience in contact center, telephony, customer support, or workflow automation environments.</li>
<li>Exposure to platforms such as Genesys Cloud, Twilio, Five9, NICE, Zoom Contact Center, or Avaya.</li>
<li>Familiarity with routing, queues, IVR, SIP, phone number management, call metadata, or agent-assist workflows.</li>
<li>Experience with Snowflake SQL, Terraform, CloudFormation, AWS SAM, or related infrastructure tooling.</li>
</ul>
This senior role will help Navan modernize the technical foundation behind our contact center environment. The work includes legacy platform migration, improved reliability and observability, AI-enabled automation, and new services that make our customer and agent experiences faster, smarter, and easier to operate.</div>

Senior Backend Platform Developer, Contact Center Systems

Octopus Energy

<div>Octopus Energy started with a bold idea: to build Britain&rsquo;s first truly digital energy supplier. By combining world-class tech with brilliant humans who care deeply about customers and driving the renewable energy transition, we made it happen and in 2025, we became Britain&rsquo;s largest energy supplier.
 
 
Now, we&rsquo;re scaling our services business, making it easy to switch to heat pumps, solar and EVs, and launching smart tariffs for Low Carbon Tech. 
 
With this, we&rsquo;re also taking the learnings, products and experiences that customers love here and rolling them out worldwide. 
 
OE Tech is the engineering and product organisation inside Octopus Energy. Here you&rsquo;ll have real ownership, variety, and the chance to shape products that make a tangible difference in people&rsquo;s lives: lowering bills, enabling greener living, and delivering experiences customers genuinely love. You&rsquo;ll work side by side with teams across services, marketing, operations, and data, and see the impact of your work in the real world, fast. 
 
We are looking for a Senior Backend Engineer to join our Low Carbon Tech team. 
 
We are installing EV Chargers, Solar, Batteries and Heat Pumps into homes to drive the energy transition at pace. As customer demand grows, our goal is to ensure scaling up never means slowing down or compromising on a world-class customer journey for low carbon tech.
 
 
To make that happen, we are building a new, dedicated engineering and product team to completely re-imagine this process - making it fast, transparent, and predictable for our customers from day one. This will be a small multi-disciplinary team who&rsquo;ll sit within our much bigger low carbon tech team.
 
 
You&rsquo;ll help design and build the platform architecture, data integrations, and automations that eliminate real world friction. If you want to design and build solutions to scale up electrotech in the nation&rsquo;s homes, this is the mission for you.
 
 
We embrace flat hierarchies and an open, agile culture that fosters innovation, flexibility, and creativity. We don&rsquo;t hang our personalities up with our coats and nor should you.
 
 
At Octopus, we hire great people who get stuff done, all whilst being themselves.
<h3 class="jobSectionHeader">
What you'll do...</h3><ul>
<li>Take total technical ownership of key platform components, shaping direction and bringing clarity to ambiguous problems while ensuring solutions are well-designed, scalable, and maintainable.</li>
<li>
Consistently write production-ready, self-documenting code that requires minimal revision, and actively improve testing strategies, non-functional requirements (performance, security, scale), and test infrastructure.
</li>
<li>Tackle systemic bottlenecks and architectural risks across multi-service configurations before they hit production, utilising highly systematic debugging approaches.
</li>
<li>Mentor other engineers, lead technical discussions, and perform rigorous code reviews to leave our systems, practices, and people stronger than you found them. Your influence will go far beyond your own delivery to help make Octopus an incredible place to be an engineer.
</li>
</ul><h3 class="jobSectionHeader">What you'll need...</h3>
5+ years experience of robust backend development with deep expertise in systems design, database optimisation (PostgreSQL/MySQL), and cloud execution. 
<ul><li>
</li>
Excited by the possibilities of integrating AI tools into your workflow to iterate quickly, combined with the discipline to rigorously check and ensure code quality. 
<li>
</li>
Clear communication skills, with a proven ability to translate complex technical constraints and architectural risks cleanly to non-technical stakeholders (compliance, operations, business development). 
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<li>A genuine curiosity about the green technology landscape. You won't be expected to dive into physical engineering or device-level software, so you don't need to be a hardware expert, we&rsquo;re just looking for someone who shares our passion for getting clean energy into millions of homes.</li>
</ul><h3 class="jobSectionHeader">Our Tech Stack...
</h3><div><ul><li>Python, Django
</li>
<li>PostgreSQL, Celery, and asynchronous background processing
</li>
<li>API Architectures HTTP, REST APIs, GraphQL
</li>
<li>Domain modeling, writing fault-tolerant systems, and test-driven deployment (TDD)
</li>
<li>AWS, Terraform, Packer, Consul, microservices, and distributed architecture scaling
</li>
</ul></div><h3 class="jobSectionHeader">\uD83D\uDC9AWhy else you'll love it here...</h3><div>
<ul><li>\uD83D\uDCB0 Wondering what the salary for this role is? Just ask us! On a call with one of our recruiters it's something we always cover as we genuinely want to match your experience with the correct salary. The reason why we don't advertise is because we honestly have a degree of flexibility and would never want salary to be a reason why someone doesn't apply to Octopus - what's more important to us is finding the right octofit!</li>
<li>\uD83C\uDF89 Octopus Energy Group is a unique culture. An organisation where people learn, decide, and build quicker. Where people work with autonomy, alongside a wide range of amazing co-owners, on projects that break new ground. We want your hard work to be rewarded with perks you actually care about! We won best company to work for in 2022, on Glassdoor we were voted 50 best places to work in 2022 and our Group CEO, Greg has recorded a podcast about our culture and how we empower our people. We&rsquo;ve also been placed in the top 10 companies for senior leadership</li>
<li>\uD83C\uDF81 Visit our UK perks hub - Octopus Employee Benefits</li>
</ul></div><div>We would prefer someone who can work in our London office but will consider remote candidates. However, you do need to be able to work in the UK.
</div>
<div></div><div>Our process usually takes up to 4 weeks, but we&rsquo;ll always do our best to flex around what works for you. Along the way, you&rsquo;ll chat with our recruitment team and your Recruiter will help you throughout different stages. Got any burning questions before then? Drop us a message at talent@octoenergy.com and we&rsquo;d love to help!</div>
<div></div>
<div>If this sounds like you then we'd love to hear from you.</div>
<div></div>
<div>Are you ready for a career with us? We want to ensure you have all the tools and environment you need to unleash your potential. Need any specific accommodations? Whether you require specific accommodations or have a unique preference, let us know, and we'll do what we can to customise your interview process for comfort and maximum magic!</div>
<div></div>
<div>Studies have shown that some groups of people, like women, are less likely to apply to a role unless they meet 100% of the job requirements. Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we hire. Across Octopus, we're looking for genuinely decent people who are honest and empathetic. Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success. As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.</div>

Where necessary, we sometimes use AI tools to help with parts of our hiring process, like reviewing applications or assessing responses. We&rsquo;re lucky to receive a huge amount of interest, so these tools help our recruiters manage that volume, not replace them. Ultimately, every hiring decision (for example, whether to progress your application or not) is always made by a real person in our Talent team. If you&rsquo;d like to know more about how we use your data, you can reach out to us via email at talent@octoenergy.com. We&rsquo;re happy to help!</div>

Senior Backend Engineer - Low Carbon Tech (LCT)

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