Front End Developer Jobs in Stevenage, Hertfordshire

Senior Back-End Developer - .NET / C# -High Growth SaaS

London, London
remote
Permanent
- GBP / Yearly
Senior Back-End Developer - .NET / C# Are you looking for a new challenge? Looking for autonomy and a seat at the table? London | Hybrid | Fintech The Role A fast-growing fintech is building a new in-house engineering team and is looking for a Senior Back-End Developer to become a key technical hire.You'll take ownership of a modern platform built with C#/.NET microservices, PostgreSQL, Redis and Google Cloud, helping shape architecture, engineering standards and future development. Key Responsibilities<ul style="direction: ltr; unicode-bidi: embed; margin-top: 0in; margin-bottom: 0in;" type="disc"><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Build and maintain C#/.NET microservices</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Design APIs, integrations and data models</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Develop secure, scalable payment and FX services</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Work with PostgreSQL, Redis and Kubernetes/GKE</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Improve CI/CD, testing, observability and reliability</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Lead code reviews and mentor other developers</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Work closely with DevOps, Product and Operations</li></ul> Requirements<ul type="disc" style="direction: ltr; unicode-bidi: embed; margin-top: 0in; margin-bottom: 0in;"><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Strong commercial C#/.NET experience</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Microservices and REST API expertise</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Strong PostgreSQL and Redis knowledge</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Experience with Kubernetes / Docker / Cloud</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Strong testing and CI/CD background</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Technical leadership or mentoring experience</li><li style="margin-top: 0; margin-bottom: 0; vertical-align: middle;">Fintech/payments experience highly advantageous</li></ul> PackageHybrid working | 25 days holiday + bank holidays | Senior seat at the tableRobert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.<img src="https://counter.adcourier.com/dG9ueS5rb3lyYXR0eS43MDczOC4xMDkyM0ByaGkuYXBsaXRyYWsuY29t.gif">
2026-10-02T06:39:32Z

Full Stack Developer

London, London
remote
Contract
400 - 500 GBP / Daily
Robert Half has partnered with a market-leading Financial Services organisation to recruit a Full Stack Engineer for an initial 6 months. This is a hybrid role based in Central London, requiring three days per week in the office.The successful candidate will play a key role in delivering a business-critical application, working with modern technologies including Azure, React, Node.js and SQL while collaborating closely with both technical teams and business stakeholders. Key Responsibilities: <ul data-start="88" data-end="1040"><li data-end="196" data-start="88" data-section-id="1tibj1t">Lead the development of an established Corporate Governance platform from prototype through to production.</li><li data-start="197" data-section-id="1qprfio" data-end="304">Design, develop and maintain scalable full-stack applications using Azure, React, Node.js and TypeScript.</li><li data-end="422" data-section-id="gi73bm" data-start="305">Build, optimise and maintain SQL Server and Azure SQL databases, ensuring performance, security and data integrity.</li><li data-start="423" data-section-id="1suhn6y" data-end="494">Develop responsive front-end applications using React and TypeScript.</li><li data-start="495" data-section-id="bc2bkk" data-end="548">Build and maintain back-end services using Node.js.</li><li data-section-id="xzem73" data-start="549" data-end="612">Deploy and support applications hosted within Azure Web Apps.</li><li data-end="735" data-start="613" data-section-id="1snznaa">Work closely with Corporate Governance teams and key stakeholders to gather requirements and deliver business solutions.</li><li data-section-id="zkzlxt" data-start="736" data-end="821">Demonstrate new functionality, gather feedback and rapidly iterate on enhancements.</li><li data-start="822" data-section-id="1qie8a5" data-end="915">Utilise GitHub Copilot and AI-assisted development tools to improve engineering efficiency.</li><li data-section-id="11kcrgx" data-start="916" data-end="1040">Contribute to the future evolution of the platform, including AI-driven capabilities and intelligent search functionality.</li></ul>Key Skills & Experience:<ul data-end="1758" data-start="1074"><li data-end="1144" data-section-id="182wmvw" data-start="1074">Significant commercial experience as a Full-Stack Software Engineer.</li><li data-section-id="1v5x5nr" data-start="1145" data-end="1285">Strong SQL Server and Azure SQL expertise, including: <ul data-end="1285" data-start="1203"><li data-section-id="1rdcpxb" data-start="1203" data-end="1220">Database design</li><li data-start="1223" data-section-id="jvwmqy" data-end="1243">Query optimisation</li><li data-end="1266" data-section-id="zadsn3" data-start="1246">Performance tuning</li><li data-section-id="sh0jjz" data-start="1269" data-end="1285">Data integrity</li></ul></li><li data-start="1286" data-section-id="10tef0z" data-end="1374">Strong commercial experience with: <ul data-start="1325" data-end="1374"><li data-end="1332" data-section-id="179haax" data-start="1325">React</li><li data-section-id="fjub3z" data-start="1335" data-end="1344">Node.js</li><li data-start="1347" data-section-id="1oinkpn" data-end="1359">JavaScript</li><li data-end="1374" data-section-id="3kl673" data-start="1362">TypeScript</li></ul></li><li data-end="1475" data-start="1375" data-section-id="1m96zug">Experience deploying and supporting applications within Microsoft Azure, including Azure Web Apps.</li><li data-end="1555" data-start="1476" data-section-id="14jzovp">Experience using GitHub Copilot and modern AI-assisted development workflows.</li><li data-section-id="26dnj" data-start="1556" data-end="1613">Strong stakeholder management and communication skills.</li><li data-section-id="112b2mu" data-start="1614" data-end="1684">Ability to translate business requirements into technical solutions.</li><li data-end="1758" data-section-id="1x1h3p9" data-start="1685">Experience delivering production-ready, business-critical applications.</li></ul>Desirable Experience:<ul data-start="1789" data-end="2083"><li data-section-id="ftmvnw" data-start="1789" data-end="1845">Experience working within a Microsoft 365 environment.</li><li data-start="1846" data-section-id="n8wc4b" data-end="1872">Knowledge of PostgreSQL.</li><li data-end="2014" data-section-id="hpxv87" data-start="1873">Experience with modern AI technologies, including: <ul data-start="1928" data-end="2014"><li data-end="1958" data-section-id="1dzoe9w" data-start="1928">Large Language Models (LLMs)</li><li data-end="1973" data-section-id="kkhbas" data-start="1961">Embeddings</li><li data-start="1976" data-section-id="1b68tl3" data-end="1994">Vector databases</li><li data-start="1997" data-section-id="1a3xfos" data-end="2014">Semantic search</li></ul></li><li data-start="2015" data-section-id="1fj28rn" data-end="2083">Experience integrating AI capabilities into business applications.</li></ul>Organisation:<ul><li>Initial 6-month contract</li><li>Competitive day rate | Outside IR35</li><li>Hybrid working | 3 days per week in Central London</li></ul>Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.<img src="https://counter.adcourier.com/YW5kcmUuZ2FyZGVuZXJtY2ZhcmxhbmUuNzk0ODguMTA5MjNAcmhpLmFwbGl0cmFrLmNvbQ.gif">
2026-09-02T15:10:09Z

Full Stack Engineer

London, London
remote
Contract
- GBP / Yearly
Robert Half has partnered with a market-leading Financial Services organisation to recruit a Full Stack Engineer for an initial 6 months. London based - 3 days per week onsite We are looking for an experienced Senior Full Stack Engineer to take an established Corporate Governance platform prototype through final development, testing and into production.The platform modernises an existing ASP.NET/on-premises SQL application and is now built using React, Node.js, TypeScript, Azure SQL and Azure Web Apps, within a Microsoft 365 environment.A strong prototype has already been developed, providing the baseline for the next phase. The successful candidate will take ownership of turning this into a robust, scalable and production-ready application.<h3>Key Responsibilities:</h3><ul><li>Take the existing prototype through development, testing and production.</li><li>Work across React, Node.js, TypeScript and Azure SQL.</li><li>Improve the data model and database architecture, addressing current limitations and manual processes.</li><li>Develop a more effective and maintainable front end.</li><li>Work closely with the Corporate Governance team and senior stakeholders to understand requirements, demonstrate functionality and rapidly iterate.</li><li>Challenge and validate existing approaches and independently debug and solve technical issues.</li><li>Use AI-assisted development tools such as GitHub Copilot and ChatGPT to accelerate delivery.</li><li>Help shape the future evolution of the platform, including potential AI/LLM and semantic search capabilities.</li></ul>Key Skills & Experience:<ul><li>The Full Stack Engineer will have strong SQL Server / Azure SQL, including database design, data modelling, queries, performance and data integrity.</li><li>Strong React, Node.js and JavaScript/TypeScript experience.</li><li>Experience with Azure Web Apps and taking applications through to production.</li><li>Strong understanding of software engineering fundamentals, with the ability to independently understand, challenge, debug and improve an existing solution.</li><li>Excellent stakeholder-facing and communication skills, with experience translating business requirements into working software.</li><li>Experience using AI development tools such as GitHub Copilot and ChatGPT.</li></ul>Organisation:<ul><li>Initial 6-month contract</li><li>Outside IR35</li><li>Hybrid working | 3 days per week in Central London</li></ul> Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.<img src="https://counter.adcourier.com/S2F6aW0uSGFzc2FuLjExNDA2LjEwOTIzQHJoaS5hcGxpdHJhay5jb20.gif">
2026-09-02T16:27:30Z

15 results for Front End Developer in Stevenage, Hertfordshire