1 to 25 of 41 Permanent Backend Developer Jobs in the UK

client, an award-winning EAP and OH provider, is looking for a talented Senior Backend Developer to join a purpose-driven tech team that creates solutions making a real difference in people's lives. This is more than just a job, it's a chance to shape systems … that support employee wellbeing in businesses across the UK & Ireland. The Role As a Senior Backend Developer , you'll be a founding member of a newly formed cross-functional engineering team. You'll play a key role in setting the tone for the team's culture, practices ...

Backend Developer Romsey, Hampshire (Hybrid - 3 days office/2 remote, flexible) £45,000 - £50,000 + Benefits OOP, PHP, Laravel My client build innovative SaaS solutions that help organisations monitor, manage, and optimise critical infrastructure. Following recent growth and their migration to AWS, they're investing heavily … modernising their platform and building new products. I'm now looking for a Backend Developer to join their agile team and play a key role in shaping the future of their technology. The Role This is a hands-on backend role with real ownership. You'll work ...

Senior Backend Developer (.NET | AI-First SaaS Platform) Compensation: Competitive, based on location and experience Location: UK (Hybrid – Office & Remote) Keepnet is an AI-driven SaaS platform experiencing strong, sustained growth in the UK with growing global momentum, helping organisations manage human cyber risk at scale. With Agentic … systems that plan, build, and operate security awareness and human risk workflows, supported by strong guardrails and observability. We’re looking for a Senior Backend Developer who wants to build production-grade backend services that power these systems, working in a multinational, AI-first engineering team where ...

Junior Backend Developer (AI & Automation) Build real systems. Learn fast. Make an impact. Were looking for a junior developer with a backend focus to help us build systems, automate processes, and develop AI-driven tools used by real businesses. This is a hands-on role working … businesses improve how they operate through automation, data, and AI. Most dont know where to start were building that bridge. What Youll Do Build backend logic for internal tools and web applications Work with APIs to connect systems and automate workflows Handle data processing, integrations, and system flows Support ...

Role: Backend Developer (Core Java) We are seeking an experienced Backend Developer with strong expertise in Core Java to build scalable, high-performance APIs and work effectively within large, complex codebases. The ideal candidate will have a solid foundation in system architecture and will collaborate closely … small, agile team. This role plays a critical part in developing and enhancing a microservices-based platform that supports risk management and backend operations for both corporate and retail trading. You will also contribute to shaping the technical roadmap and improving the Software Development Life Cycle (SDLC). ...

Junior Backend Developer (AI & Automation) Build real systems. Learn fast. Make an impact. Were looking for a junior developer with a backend focus to help us build systems, automate processes, and develop AI-driven tools used by real businesses. This is a hands-on role working ...

seeking an experienced Backend Developer with strong expertise in Core Java to build scalable, high-performance APIs and work effectively within large, complex codebases. This role plays a critical part in developing and enhancing a microservices-based platform that supports risk management and backend operations for both … also contribute to shaping the technical roadmap and improving the Software Development Life Cycle (SDLC). Key Responsibilities: Design, develop, and maintain high-performance backend services for complex data processing systems Architect scalable solutions for high-volume calculations and data pipelines Optimize database schemas, write efficient SQL queries ...

Title: Node.js Backend Developer Salary: up to £80,000 + share options Location: Fully remote (UK) Sector: Cybersecurity SaaS We’re supporting a high-growth cyber SaaS scale-up on the hire of a Node.js Backend Developer to own production APIs and serverless microservices. ...

seeking an experienced Backend Developer with strong expertise in Core Java to build scalable, high-performance APIs and work effectively within large, complex codebases. This role plays a critical part in developing and enhancing a microservices-based platform that supports risk management and backend operations for both ...

Backend Python Developer (AI) - Remote - UK - excellent opportunity to join this innovative and fast-growing AI tech. organisation! Skills/experience 2+ years solid commercial Python coding experience (backend, API development would be great). Good understanding of Docker, Kubernetes, and scalable distributed systems . An Agile … join An excellent opportunity to join an incredible team, organisation - work lean, iterate fast, and learn quickly - perfect role for a Python Back-end Developer with an Agile mindset who is curious, flexible, collaborative, unafraid to try new things and help design and build their AI platform. ...

Backend Python Developer (AI) - Remote - UK - excellent opportunity to join this innovative and fast-growing AI tech. organisation! Skills/experience 2+ years solid commercial Python coding experience (backend, API development would be great). Good understanding of Docker, Kubernetes, and scalable distributed systems click apply ...

Cleared Backend Developer Location: UK Wide Clearance: DV clearance required Sector: Defence & National Security Role Summary Our client is seeking DV cleared Backend Developers to support high impact Defence and Security programmes. You will design, build and operate secure, cloud-native backend services that underpin mission … from shaping technical designs and delivering features through to improving reliability, resilience and performance in live operations. Key Responsibilities Design and build backend services and APIs, delivering features end-to-end in collaboration with cross-functional teams. Develop cloud-native and containerised applications using technologies such as Java (Spring ...

commerce platform for florists in the UK, and we are looking for an experienced, remote backend PHP developer to join our team of 4 developers. The developer can be based outside the UK, but ideally should be available for at least part of the UK working … depending on hours and experience - Salary and hours are negotiable Current team: - 3 PHP developers - 3 Artworkers/on boarders - 1 Apple developer for the app Benefits: - Part of a small and friendly team - Remote working with stable income - Flexible work hours - Part of a quickly growing business - Wage ...

commerce platform for florists in the UK, and we are looking for an experienced, remote backend PHP developer to join our team of 4 developers. The developer can be based outside the UK, but ideally should be available for at least part of the UK working … depending on hours and experience - Salary and hours are negotiable Current team: - 3 PHP developers - 3 Artworkers/on boarders - 1 Apple developer for the app Benefits: - Part of a small and friendly team - Remote working with stable income - Flexible work hours - Part of a quickly growing business - Wage ...

commerce platform for florists in the UK, and we are looking for an experienced, remote backend PHP developer to join our team of 4 developers. The developer can be based outside the UK, but ideally should be available for at least part of the UK working … depending on hours and experience - Salary and hours are negotiable Current team: - 3 PHP developers - 3 Artworkers/on boarders - 1 Apple developer for the app Benefits: - Part of a small and friendly team - Remote working with stable income - Flexible work hours - Part of a quickly growing business - Wage ...

commerce platform for florists in the UK, and we are looking for an experienced, remote backend PHP developer to join our team of 4 developers. The developer can be based outside the UK, but ideally should be available for at least part of the UK working … depending on hours and experience - Salary and hours are negotiable Current team: - 3 PHP developers - 3 Artworkers/on boarders - 1 Apple developer for the app Benefits: - Part of a small and friendly team - Remote working with stable income - Flexible work hours - Part of a quickly growing business - Wage ...

commerce platform for florists in the UK, and we are looking for an experienced, remote backend PHP developer to join our team of 4 developers. The developer can be based outside the UK, but ideally should be available for at least part of the UK working … depending on hours and experience - Salary and hours are negotiable Current team: - 3 PHP developers - 3 Artworkers/on boarders - 1 Apple developer for the app Benefits: - Part of a small and friendly team - Remote working with stable income - Flexible work hours - Part of a quickly growing business - Wage ...

anodyne version. Bonus points if you can find the more analeptic version. And provide proof of your quest. Good luck! The Back-End Developer will work for a fast-paced startup in Central London. The Back-End Developer will enjoy hybrid working. The Back-End Developer will … Claude to accelerate development timelines. The Back-End Developer will design and build robust server-side applications using .NET and C#. The Back-End Developer will implement business-critical logic that performs heavy lifting at scale. The Back-End Developer will design, query and optimise SQL Server ...

Use your Java and AWS knowledge to build secure, scalable cloud-based services for medical researchers London with hybrid working; to £90k DoE + options and benefits This company is developing an AWS-based platform ...

Location: London, UK Industry: Investment Banking Work pattern: Hybrid (2/3 days onsite) We’re looking for an experienced Backend Developer to join a leading investment bank and help drive innovation that empowers people and businesses across Asia, Africa, and the Middle East. This role is part … Blade function, delivering strategic initiatives that make a real impact. Prior banking experience is highly desirable. The Key Responsibilities As a senior developer, you’ll be driving our platform forwards and delivering quality solutions to business-critical customer requirements. Based in London, you will collaborate in a dynamic global ...

Cleared Backend Developer Location: UK Wide Clearance: DV clearance required Sector: Defence & National Security Role Summary Our client is seeking DV cleared Backend Developers to support high impact Defence and Security programmes. You will design, build and operate secure, cloud-native backend services that underpin mission ...

Lead Backend Engineer | Node.js, TypeScript, Microservices, APIs, Event-Driven Architecture | London | Up to 130k salary + equity This is an opportunity to join a fast-scaling AI startup building an AI operating system for property management, automating up to 80-90% of repetitive workflows across compliance, maintenance, and tenant … strong early traction and growing demand, they are building toward becoming a category-defining platform in a multi-billion-pound industry. As a Lead Backend Engineer, you'll take ownership of the backend architecture, APIs, and microservices that power an AI assistant operating in real-time production environments. ...

Title: BackEnd Technical Support Developer Location: London, UK Work Pattern: Hybrid – 3 days onsite, 2 working from home Salary: up to £50,000 per annum + on call bonus Job Position: Permanent Additional Info: This position does require you to be on call every 5th week (extra … your salary) We are looking for a dedicated BackEnd Technical Support Developer to help handle production issues. This includes working with the company’s clients and customer success team to identify the source of a technical problem and then fixing those problems. This role covers ...

Senior Backend Software Engineer | Hybrid in Mansfield (3 days p/w onsite) We are working with a leading retail organisation that is transforming the industry through digital innovation and enhanced customer experiences. Operating across multiple brands within the sports, premium, and luxury sectors, our client has a significant … mobile applications, including some of the biggest names in retail. The Opportunity This is a senior individual contributor role offering the opportunity to shape backend architecture, influence engineering standards, and play a key role in delivering highly scalable, resilient systems. You’ll work across critical services and integrations, owning ...

Power the Core of Fintech Innovation: Senior Back-End Developer at Kodelab At Kodelab, we are shaping the future of fintech, blockchain, and AI-powered solutions. Our back-end infrastructure is the backbone of our success, powering everything from secure financial transactions to AI-driven platforms and Web3 integrations … . We are looking for a Back-End Developer who can build and maintain scalable, high-performance systems that keep our fintech ecosystem running seamlessly. This role is critical and sensitive to our operations, requiring a developer who is highly available, reliable, and proactive in maintaining system integrity. ...