senior software developer

<div>Are you passionate about driving quality through code? DVT is on the lookout for a highly skilled API-focused Developer in Test with deep expertise in contract testing, mobile automation, and unit testing best practices. This role is ideal for someone who thrives in coaching environments, champions shift-left testing, and can influence development teams to adopt robust testing strategies across the stack.<h4 class="jobSectionHeader"> 
Key Responsibilities</h4><ul><li>
Lead the creation, review, and optimisation of unit, component, and contract tests for APIs and mobile applications.</li><li>
Coach and mentor developers on test design, risk-based testing, and test strategy, with clear articulation of the distinctions between test types.</li><li>
Evaluate test coverage and placement based on risk, code complexity, stability, and historical defects.</li><li>
Drive shift-left testing practices and embed quality early in the development lifecycle.</li><li>
Champion mobile testing using tools like Espresso (Android) and XCUITest (iOS), both at UI and service levels.</li><li>
Build and maintain scalable test automation frameworks for mobile and API layers.</li><li>
Influence and track improvements in test coverage and automation maturity across teams.</li></ul><h4 class="jobSectionHeader">
Tech Stack</h4><ul><li>
Languages &amp; Frameworks: Java, React, Vert.x (primary), Spring Boot (secondary)</li><li>
Mobile Testing: Espresso, XCUITest</li><li>
Contract Testing: Pact, PactFlow, OpenAPI Spec</li><li>
CI/CD &amp; DevOps: GitLab, Jenkins, YAML, Docker, Kubernetes (k9s), AWS EKS</li><li>
Monitoring &amp; Reporting: Grafana, SonarCloud</li><li>
Test Management: Qmetry, Xray, JIRA</li><li>
Nice to have: Kubernetes (k8s), AWS EKS</li></ul><h4 class="jobSectionHeader">
Must-Have Experience</h4><ul><li>
Mobile API testing expertise with a mobile-first testing approach</li><li>
Test architecture design</li><li>
Proven experience implementing the test pyramid and shift-left strategies.</li><li>
Strong background in unit and component testing using JUnit/NUnit.</li><li>
Hands-on experience with contract testing for mobile APIs using Pact/PactFlow or OpenAPI Spec.</li><li>
Skilled in configuring SonarCloud for optimal test scanning.</li><li>
Solid understanding of QA principles, with the ability to explain and apply them across test levels.</li><li>
Experience with GitLab, YAML scripting, and Jenkins pipeline creation.</li><li>
UI automation framework development for Android and iOS.</li><li>
Familiarity with accessibility testing and relevant plugins.</li><li>
RESTful service testing using Rest Assured, Postman, and similar tools.</li><li>
Comfortable working in complex data environments.</li></ul><h4 class="jobSectionHeader">
Nice to Have</h4><ul><li>
Experience in the airline domain.</li><li>
Exposure to React testing using React Testing Library (re3/re4).</li><li>
Experience with Playwright for end-to-end testing.</li><li>
AWS cloud services knowledge.</li></ul></div>

Senior Software Developer in Test (Senior SDET)

Pure Human Resources

<div>Senior Full Stack Developer<div>
England (Remote)
 
Full time, permanent
 
Salary: &pound;55,000 &ndash; &pound;70,000 (DOE)
 
Competitive benefits package</div><div>
Building technology that makes a real difference in healthcare</div><div>
Our client, Holmusk, is a global health technology company transforming behavioural health and chronic disease care through data, digital innovation and evidence-driven medicine.</div><div>
Following continued growth, they are seeking an experienced Senior Full Stack Developer to join their UK team and play a key role in the development of healthcare applications used within Mental Health Trusts across the UK.</div><div>
This is an opportunity to combine technical excellence with meaningful impact, helping to build secure, scalable and compliant software that supports frontline healthcare professionals.</div><div>
Senior Full Stack Developer, the role:</div><div><ul><li>Design, develop and maintain scalable full stack applications using C#/.NET and React
</li><li>Build responsive, high-performance user interfaces using modern JavaScript, HTML and CSS
</li><li>Contribute to architecture decisions, ensuring scalability, maintainability and security
</li><li>Develop and maintain automated testing frameworks across unit, integration and end-to-end testing
</li><li>Drive engineering best practice through code reviews and quality standards
</li><li>Work within a regulated software environment with a strong focus on quality and compliance
</li><li>Collaborate closely with a small, highly skilled development team
</li><li>Support CI/CD pipelines and cloud-based deployment processes
</li><li>Troubleshoot, optimise and improve performance across applications and services
</li><li>Contribute to documentation, traceability and technical governance requirements
</li><li>Support future growth of the engineering team through mentoring and knowledge sharing</li></ul></div><div>
Senior Full Stack Developer, the person:</div><div><ul><li>Strong commercial experience with C# /.NET Core /.NET 6+
</li><li>Strong React.js and modern JavaScript development experience
</li><li>Solid understanding of REST APIs, microservices and distributed systems
</li><li>Experience with design patterns and frameworks such as Entity Framework, MVC, MVVM or CQRS
</li><li>Proven experience implementing automated testing and quality assurance practices
</li><li>Experience with Azure cloud environments
</li><li>Strong knowledge of Git, CI/CD pipelines and DevOps principles
</li><li>Experience working with MS SQL and relational databases
</li><li>Understanding of secure coding principles and data protection requirements
</li><li>Experience using AI tools to improve development efficiency</li></ul></div><div>
Senior Full Stack Developer, the benefits:</div><div><ul><li>Opportunity to shape the development of a software solution that directly supports mental health service delivery
</li><li>Fully remote working
</li><li>Collaborative, flexible and supportive working culture
</li><li>Exposure to innovative healthcare technology at scale
</li><li>Opportunity to work with modern cloud, AI and digital health solutions
</li><li>Generous holiday allowance plus additional company days for national holidays
</li><li>Annual performance-based company bonus
</li><li>Ongoing professional development and career growth opportunities</li></ul></div><div>
Pure Human Resources Limited works in partnership with Holmusk in providing Recruitment support. No applications from agencies please.</div></div>

Senior Full Stack Developer

JPMorganChase

<div>JOB DESCRIPTION 
 
 
We have an exciting and rewarding opportunity for you to take your software engineering career to the next level.
As a Senior Lead Software Engineer within the Equities Derivatives and Risk Technology team at JPMorgan Chase, you will play a pivotal role in an agile environment, driving the development and enhancement of market-leading technology solutions. You will be hands-on in building a critical, trader-facing Risk Management UI using React, while also mentoring and guiding team members in best development practices. Your expertise will directly influence business outcomes, leveraging deep technical skills and innovative problem-solving to address complex challenges across multiple technologies and applications.
Key Responsibilities<ul><li>
Design, develop, and troubleshoot creative software solutions, applying innovative thinking to solve technical challenges and deliver robust systems.</li><li>
Write secure, high-quality production code in React and Typescript, and conduct thorough code reviews and debugging for team contributions.</li><li>
Drives adoption and governance of approved AI-assisted engineering practices across teams to improve code quality, delivery speed, and operational outcomes (e.g., AI-assisted code review/refactoring, test acceleration, release readiness, incident/root-cause analysis), while establishing measurable validation standards (secure coding, peer review, automated testing) and promoting reuse of proven patterns and automation within the SDLC/TLM toolchain.</li><li>
Applies knowledge of tools within the Software Development Life Cycle toolchain, including approved AI-assisted development and automation capabilities, to improve the value realized by automation at scale.</li><li>
Identify and implement opportunities to automate or remediate recurring issues, enhancing the operational stability of applications and systems.</li><li>
Lead technical evaluation sessions with external vendors, startups, and internal teams to assess architectural designs and technical suitability for integration with existing systems.</li><li>
Champion communities of practice within Software Engineering, promoting the adoption of new and emerging technologies.</li></ul>
Required qualifications, capabilities, and skills<ul><li>
Formal training or certification in software engineering, with advanced proficiency in React.</li><li>
Strong experience with automation and continuous delivery (CI/CD) methodologies.</li><li>
Comprehensive understanding of the Software Development Life Cycle.</li><li>
Advanced knowledge of agile practices, including CI/CD, application resiliency, and security.</li><li>
Demonstrated experience leading effective use of enterprise-authorized AI-assisted software development tools within the work environment (e.g., for coding, code review, test acceleration, troubleshooting) with the ability to set team expectations for validating AI outputs for correctness, performance, and security</li><li>
Strong understanding of responsible AI use in engineering workflows, including data sensitivity considerations, secure handling of inputs/outputs, and adherence to resiliency and security expectations; experience coaching senior engineers/leads on compliant usage patterns and controls.</li><li>
Demonstrated expertise in software development and technical processes, with exposure to areas such as cloud, AI/ML, or mobile technologies.</li><li>
Hands-on experience building complex web applications using React and Typescript.</li><li>
Familiarity with modern web build tools (e.g., webpack, Create React App, Vite).</li><li>
Proven ability to develop secure, high-quality production Typescript code.</li><li>
Commitment to code quality, including writing and maintaining test cases with frameworks such as Jest, Cypress, and @testing-library/react, as well as conducting performance testing.
</li></ul>ABOUT US
 
 
J.P. Morgan is a global leader in financial services, providing strategic advice and products to the world's most prominent corporations, governments, wealthy individuals and institutional investors. Our first-class business in a first-class way approach to serving clients drives everything we do. We strive to build trusted, long-term partnerships to help our clients achieve their business objectives. 
<div><div>We recognize that our people are our strength and the diverse talents they bring to our global workforce are directly linked to our success. We are an equal opportunity employer and place a high value on diversity and inclusion at our company. We do not discriminate on the basis of any protected attribute, including race, religion, color, national origin, gender, sexual orientation, gender identity, gender expression, age, marital or veteran status, pregnancy or disability, or any other basis protected under applicable law. We also make reasonable accommodations for applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs. Visit our FAQs for more information about requesting an accommodation. 
</div></div> 
 
ABOUT THE TEAM
 
 
J.P. Morgan's Commercial &amp; Investment Bank is a global leader across banking, markets, securities services and payments. Corporations, governments and institutions throughout the world entrust us with their business in more than 100 countries. The Commercial &amp; Investment Bank provides strategic advice, raises capital, manages risk and extends liquidity in markets around the world.</div>

React UI Senior Lead Engineer - Synergy EMEA

<div>JOB DESCRIPTION 
 
 
Be an integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products.
As a Senior Lead Software Engineer at JPMorganChase within Payments Technology, you are an integral part of an agile team that works to enhance, build, and deliver trusted market-leading technology products in a secure, stable, and scalable way. Drive significant business impact through your capabilities and contributions, and apply deep technical expertise and problem-solving methodologies to tackle a diverse array of challenges that span multiple technologies and applications.
Job Responsibilities<ul><li>
Regularly provides technical guidance and direction to support the business and its technical teams, contractors, and vendors</li><li>
Develops secure and high-quality production code, and reviews and debugs code written by others</li><li>
Drives adoption and governance of approved AI-assisted engineering practices across teams to improve code quality, delivery speed, and operational outcomes (e.g., AI-assisted code review/refactoring, test acceleration, release readiness, incident/root-cause analysis), while establishing measurable validation standards (secure coding, peer review, automated testing) and promoting reuse of proven patterns and automation within the SDLC/TLM toolchain.</li><li>
Applies knowledge of tools within the Software Development Life Cycle toolchain, including approved AI-assisted development and automation capabilities, to improve the value realized by automation at scale.</li><li>
Drives decisions that influence the product design, application functionality, and technical operations and processes</li><li>
Serves as a function-wide subject matter expert in one or more areas of focus</li><li>
Actively contributes to the engineering community as an advocate of firmwide frameworks, tools, and practices of the Software Development Life Cycle</li></ul>
Required qualifications, capabilities, and skills<ul><li>
Formal training or certification on software engineering concepts and advanced applied experience</li><li>
Hands-on practical experience delivering system design, application development, testing, and operational stability</li><li>
Advanced in one or more programming language(s)</li><li>
Demonstrated experience leading effective use of enterprise-authorized AI-assisted software development tools within the work environment (e.g., for coding, code review, test acceleration, troubleshooting) with the ability to set team expectations for validating AI outputs for correctness, performance, and security</li><li>
Strong understanding of responsible AI use in engineering workflows, including data sensitivity considerations, secure handling of inputs/outputs, and adherence to resiliency and security expectations; experience coaching senior engineers/leads on compliant usage patterns and controls.</li><li>
Ability to tackle design and functionality problems independently with little to no oversight 
Practical cloud native experience</li></ul>
ABOUT US
 
 
J.P. Morgan is a global leader in financial services, providing strategic advice and products to the world's most prominent corporations, governments, wealthy individuals and institutional investors. Our first-class business in a first-class way approach to serving clients drives everything we do. We strive to build trusted, long-term partnerships to help our clients achieve their business objectives. 
<div><div>We recognize that our people are our strength and the diverse talents they bring to our global workforce are directly linked to our success. We are an equal opportunity employer and place a high value on diversity and inclusion at our company. We do not discriminate on the basis of any protected attribute, including race, religion, color, national origin, gender, sexual orientation, gender identity, gender expression, age, marital or veteran status, pregnancy or disability, or any other basis protected under applicable law. We also make reasonable accommodations for applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs. Visit our FAQs for more information about requesting an accommodation. 
</div></div> 
 
ABOUT THE TEAM
 
 
J.P. Morgan's Commercial &amp; Investment Bank is a global leader across banking, markets, securities services and payments. Corporations, governments and institutions throughout the world entrust us with their business in more than 100 countries. The Commercial &amp; Investment Bank provides strategic advice, raises capital, manages risk and extends liquidity in markets around the world.</div>

Sr Lead Software Engineer - Full Stack Java / React

Commerce

<div><h1 class="jobSectionHeader">Welcome to the Agentic Commerce Era
</h1>At Commerce, our mission is to empower businesses to innovate, grow, and thrive with our open, AI-driven commerce ecosystem. As the parent company of BigCommerce , Feedonomics , and Makeswift , we connect the tools and systems that power growth, enabling businesses to unlock the full potential of their data, deliver seamless and personalized experiences across every channel, and adapt swiftly to an ever-changing market. We believe in harnessing AI responsibly to unlock new possibilities, and we&rsquo;re looking for individuals who use it intentionally to solve problems, accelerate outcomes, and expand what&rsquo;s possible in their role. Our purpose is to help businesses confidently solve complex commerce challenges so they can build smarter, adapt faster, and grow on their own terms. If you want to be part of a team of bold builders, sharp thinkers, and technical trailblazers who shape the future of commerce, this is the place for you.
<h1 class="jobSectionHeader">Senior Software Engineer - Data Team
</h1>Location: London / UK (Hybrid)
Company: Commerce 
 
<h2 class="jobSectionHeader">About Commerce
</h2>Commerce is an open SaaS ecommerce platform that helps merchants build, run, and grow their businesses.
The Data Team builds systems that support merchant-facing products, integrations, analytics, reporting, and the infrastructure behind them. 
 
<h2 class="jobSectionHeader">About The Role
</h2>We are looking for a Senior Software Engineer who can own complex problems from discovery through production.
This role is not narrowly frontend, backend, or data engineering. The right person can work across services, APIs, event flows, product experience, production debugging, and cross-team delivery.
They should be comfortable taking an unclear business or customer problem, breaking it down, making trade-offs clear, and shipping a reliable solution.
We need someone who raises the engineering bar without needing a lot of direction. 
 
<h2 class="jobSectionHeader">What You Will Do
</h2><ul><li>Design and build reliable services, APIs, and product-facing workflows.
</li><li>Work across backend systems, UI surfaces, event processing, and third-party integrations.
</li><li>Turn unclear problems into concrete technical plans.
</li><li>Own production behavior, including monitoring, alerting, logging, debugging, and runbooks.
</li><li>Work with product, design, infrastructure, support, and other engineering teams.
</li><li>Improve quality through tests, code review, observability, and simpler designs.
</li><li>Use data and production evidence to validate decisions.
</li>Take ownership of incidents and production issues when systems do not behave as expected. 
<li>
</li></ul> 
<h2 class="jobSectionHeader">What We Are Looking For
</h2><ul><li>Strong senior-level engineering judgment.
</li><li>Experience owning ambiguous technical work.
</li><li>Ability to solve problems across multiple layers of a system.
</li><li>Strong backend engineering experience with production services.
</li><li>Enough frontend experience to work on product-facing workflows when needed.
</li><li>Comfort with distributed systems, event-driven flows, caching, retries, rate limits, and failure modes.
</li><li>Strong production debugging skills.
</li><li>Ability to explain trade-offs clearly.
</li><li>Bias toward simple, reliable solutions.
</li>Good communication during incidents, reviews, and cross-team work. 
<li>
</li></ul> 
<h2 class="jobSectionHeader">Technical Experience
</h2><ul><li>5+ years of software engineering experience.
</li><li>Strong experience with Java, Scala, Kotlin, Go, or a similar backend language.
</li><li>Experience building APIs, services, and integrations.
</li><li>Experience with SQL and data-backed product behavior.
</li><li>Experience with GCP, AWS, or another cloud platform.
</li><li>Experience with Kafka, RabbitMQ, Pub/Sub, or similar event systems.
</li><li>Experience with logs, metrics, dashboards, alerts, and tracing.
</li>Experience writing automated tests and reviewing code. 
<li>
</li></ul> 
<h2 class="jobSectionHeader">Useful Experience
</h2><ul><li>React / TypeScript or similar frontend experience.
</li><li>Experience with merchant-facing or customer-facing product workflows.
</li><li>Experience with third-party integrations, account linking, OAuth, or external APIs.
</li><li>Experience with Redis, caching, rate limiting, queues, or high-volume event processing.
</li>Experience with analytics, reporting, attribution, or event data products. 
<li>
</li></ul> 
<h2 class="jobSectionHeader">Mindset
</h2><ul><li>Own the outcome, not only the ticket.
</li><li>Ask what problem we are solving before choosing the implementation.
</li><li>Prefer simple designs that other engineers can operate.
</li><li>Validate risky assumptions early.
</li><li>Use production data and customer impact to guide decisions.
</li><li>Escalate early when risk, ownership, or scope is unclear.
</li>Do not take shortcuts around process, security, or production safety. 
<li>
</li></ul> 
<h2 class="jobSectionHeader">What Good Looks Like
</h2>A strong candidate can describe systems they owned, incidents they handled, trade-offs they made, and mistakes they learned from.
They should be able to explain how they approach unclear problems, reduce risk before production, and make systems easier for the team to operate.
They should not need a tech lead to turn every ambiguous problem into a detailed task list.
<h1 class="jobSectionHeader">Inclusion and Belonging
</h1>At Commerce, we believe that celebrating the unique histories, perspectives and abilities of every employee makes a difference for our company, our customers and our community. We are an equal opportunity employer and the inclusive atmosphere we build together will make room for every person to contribute, grow and thrive.
We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the interview process, to perform essential job functions and to receive other benefits and privileges of employment. If you need an accommodation in order to interview at Commerce, please let us know during any of your interactions with our recruiting team.
Learn more about the Commerce team, culture and benefits at https://www.commerce.com/careers/
<h1 class="jobSectionHeader">Protect Yourself Against Hiring Scams: Our Corporate Disclaimer
</h1>Commerce, along with many other employers, has become the subject of fraudulent job offers to hopeful prospective job seekers.
 
 
Be advised:
 
Commerce does not offer jobs to individuals who do not go through our formal hiring process.
 
 
Commerce will never:
<ul><li>require payment of recruitment fees from candidates;
</li><li>request personally identifiable information through unsanctioned websites or applications;
</li><li>attempt to solicit money from you as part of the hiring process or as part of an employment offer;
</li><li>solicit money to complete visa requirements as part of a job offer. 
</li></ul> 
If you receive unsolicited offers of employment from Commerce, we urge you to be extremely cautious and avoid engaging or responding.</div>

Senior Software Engineer

Visa

<div>About Us 
Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid.
At Visa, you'll have the opportunity to create impact at scale &mdash; tackling meaningful challenges, growing your skills and seeing your contributions impact lives around the world.
Join Visa and do work that matters &ndash; to you, to your community, and to the world. Progress starts with you.
Job Description<div>
You will be joining the FX Client Pricing and Risk team at VXBS (Visa-Cross-Border-Solutions) / CurrencyCloud, where we are creating software to assist our FX Risk processes and give our customers frictionless experience to exchange currencies in a complex environment of constantly moving markets.</div><div>
Senior Software Engineer reporting to the FX Engineering Manager.</div><div> 
You will be working alongside versatile and experienced engineers improving our FX capabilities. This includes the following contributions:</div><div><ul><li>
 Contribute to the next generation FX Client Risk platform we are building. It is a great opportunity to work on scaling software towards using event-driven architecture.</li><li>
Design, build and maintain core FX Risk capabilities. Our customers value us for being able to abstract away the intricacies of foreign exchange market under a simple API solution.</li><li>
 Provide technical guidance and mentorship to team members.</li><li>
 Influence wider company architecture. The FX Client Risk team is a new team but based on the FX transactions handled by many other teams.</li><li>
 Work alongside smart QA engineers, who build and maintain a vast collection of automated testing scenarios.</li></ul></div><div>
Visa requires at least 3 days in office, expectations of these days will be confirmed by your Hiring Manager.</div>
Qualifications
Basic Qualifications:<ul><li>
5+ years of experience in software development.</li><li>
2+ years of experience building microservices with Java.</li><li>
Proficient in other programming languages, ideally being comfortable reading Ruby or Scala.</li><li>
Working knowledge of relational databases such as MySQL.</li><li>
Experience designing event based and streaming solutions using Kafka will be valued.</li><li>
Experience building applications that run in Kubernetes would be handy.</li></ul>
Preferred Qualifications:<ul><li>
5+ years experience in Java Backend Development</li><li>
Hands-on experience delivering high-quality production code with Claude Code.</li><li>
Experience managing working with contractors and outsource teams is important.</li><li>
Experience building in software for financial domain, especially in risk is beneficial.</li><li>
Experience working with agile process and principles.</li><li>
Experience in multiple programming languages, these teams primarily use Java, so experience with microservices in Java is important.</li><li>
Proficient in different programming languages, ideally being comfortable reading Ruby or Scala.</li><li>
Experience designing event based and streaming solutions using Kafka will be valued.</li><li>
Strong SQL knowledge, ability to understand and write complex queries.</li><li>
Working knowledge of relational databases such as MySQL.</li><li>
Experience building applications that run in Kubernetes would be handy.</li><li>
Working in a DevOps environment, or passion and willingness to work in this way.</li><li>
Proven delivery of well-tested, scalable, fault-tolerant and performant solutions.</li><li>
A pragmatic approach to solutions and delivery of technical projects.</li><li>
Have been a driving force not only behind change in your previous roles but also in working in a distributed environment.</li><li>
Having worked in a collaborative environment where you are comfortable reviewing code of your peers.</li></ul>
Visa is an EEO Employer
Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.</div>

Senior Software Engineer FX

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

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