1 to 25 of 49 Backend Developer Jobs in London

Senior Backend Developer (C#/.Net) | Brand New Trading Payments Desk | £130,000 + Bonus + Benefits | London Hybrid I am looking for a Senior Backend Engineer with a .Net (C#) focus for a Trading House that build cross asset trading systems. The FinTech are building from … ground up and currently expanding their team to work on a completely greenfield build, payments platform. As a Senior Backend, your role will be to come in and build out a new Payments platform working very closely with another engineer to redesign parts of the system and lead from ...

Senior Backend Developer (C#/.Net) | Brand New Trading Payments Desk | £130,000 + Bonus + Benefits | London Hybrid I am looking for a Senior Backend Engineer with a .Net (C#) focus for a Trading House that build cross asset trading systems. The FinTech are building from … ground up and currently expanding their team to work on a completely greenfield build, payments platform. As a Senior Backend, your role will be to come in and build out a new Payments platform working very closely with another engineer to redesign parts of the system and lead from ...

Back End Developer (C#, .NET, SQL) We're supporting a well-backed SaaS scale-up in the learning-tech space who are hiring a Backend Developer to join their growing engineering team. If you enjoy building real features end-to-end, not just patching bugs, this … great fit. What you’ll be doing Building and maintaining backend services in C#, ASP.NET, .NET Working heavily with MS SQL and API development Contributing to new feature design, architecture discussions, and code reviews Helping shape a platform used by thousands of users Collaborating with a small, supportive team ...

Back End Developer (C#, .NET, SQL) We're supporting a well-backed SaaS scale-up in the learning-tech space who are hiring a Backend Developer to join their growing engineering team. If you enjoy building real features end-to-end, not just patching bugs, this … great fit. What you’ll be doing Building and maintaining backend services in C#, ASP.NET, .NET Working heavily with MS SQL and API development Contributing to new feature design, architecture discussions, and code reviews Helping shape a platform used by thousands of users Collaborating with a small, supportive team ...

Backend Developer - Fully Remote - £60K + Benefits My client is a small but fast-moving tech start-up on a mission to build something genuinely game-changing. The company is still early in their journey, small team, big ideas and they're looking for someone who wants … your work directly impacts the roadmap, and where you’ll grow alongside the company, get in touch. The Role My client is hiring a Backend Developer who’s passionate about building scalable, reliable backend systems in a modern stack. You’ll be one of the first engineering ...

Backend Developer - Fully Remote - £60K + Benefits My client is a small but fast-moving tech start-up on a mission to build something genuinely game-changing. The company is still early in their journey, small team, big ideas and they're looking for someone who wants … your work directly impacts the roadmap, and where you’ll grow alongside the company, get in touch. The Role My client is hiring a Backend Developer who’s passionate about building scalable, reliable backend systems in a modern stack. You’ll be one of the first engineering ...

Senior Backend Python Developer (Cloud & Microservices) Salary: Up to £90,000 Location: Hybrid, London HQ Reporting to: Head of AI and Data Science Overview Our client is hiring a Senior Backend Python Developer to build and maintain scalable backend systems supporting AI and automation projects. … successful candidate will work on cloud-based microservice architectures , helping integrate AI systems and backend infrastructure within the organisation’s technology ecosystem. Key Responsibilities Design and develop high-quality, efficient backend systems using Python . Build and maintain microservices and RESTful APIs . Integrate backend systems with ...

Lead Backend Developer Location: London - 1x a month Salary: Up to £120,000 (D.O.E) + benefits Fruition Group are partnering with a high-growth Insurtech unicorn that's scaling its engineering function. This is a unique chance to work across both proven, revenue-generating products and greenfield initiatives … ideal role for a driven Lead Engineer who thrives in ambitious environments and wants to make a tangible impact. As a Lead Backend Engineer, you'll take ownership of designing and scaling cloud-native backend systems. You'll work primarily with Python (FastAPI) and play a key role ...

Senior Backend Developer £70,000 - £80,000 GBP Performance bonus, 28 days leave + bank holidays, Private Medical Insurance Hybrid WORKING Location: Central London, Greater London - United Kingdom Type: Permanent Role: Senior Backend Engineer Salary: Up to £80k + performance bonus and benefits Location: London (Hybrid … data processing, and user experience . The environment is supportive, valuing creativity, continuous learning, and flexibility through hybrid working. They are seeking a Senior Backend Engineer to build highly scalable and maintainable services using modern technologies.. What You'll Do: Develop backend services in Python (FastAPI/Django ...

Senior Backend Developer 40 hours per week Inside IR35 Hybrid 1 office day London Farringdon office address: 47-53 Charterhouse St, London, EC1M 6PB Start date: January 2026 Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python … full-time role, 40 hours per week. If this role feels right, send us your CV. Accountabilities: Playing a pivotal role in the backend engineering team, you will help to build full-stack cloud apps. You'll be using Python and AWS Cloud services on the backend. Adopt ...

Senior Backend Developer Location: London - 1x a month Salary: Up to £95,000 (D.O.E) + benefits Fruition Group working with a leading Insurtech unicorn on a mission to transform the insurance industry. Their products have already generated millions in revenue, and now they're investing heavily … This is an exciting opportunity for a motivated Senior Engineer who wants to grow in a high-performing, forward-thinking business. As a Senior Backend Engineer, you'll play a central role in building and scaling the systems that power their insurance platform. You'll focus on developing Python ...

Senior Python Backend Developer Kings Cross, London- Onsite 2/3 days a week 6 month contract Inside of IR25 £750 - £800 per day My client is seeking a highly skilled software engineer to join its AI/ML team, contributing to the development of cutting-edge applications … that accelerate drug discovery and enable personalised therapies. The ideal candidate will have strong Python backend development experience, preferably with FastAPI, and be proficient in cloud-native infrastructure (Google Cloud preferred), DevOps practices, and automated testing. While a background in life sciences is a plus, a passion for improving ...

Senior Backend Developer £70,000 - £80,000 GBP Performance bonus, 28 days leave + bank holidays, Private Medical Insurance Hybrid WORKING Location: Central London, Greater London - United Kingdom Type: Permanent Role: Senior Backend Engineer Salary: Up to £80k + performance bonus and benefits Location: London (Hybrid ...

Senior Backend Developer Location: London - 1x a month Salary: Up to £95,000 (D.O.E) + benefits Fruition Group working with a leading Insurtech unicorn on a mission to transform the insurance industry. Their products have already generated millions in revenue, and now they're investing heavily ...

Lead Backend Developer Location: London - 1x a month Salary: Up to £120,000 (D.O.E) + benefits Fruition Group are partnering with a high-growth Insurtech unicorn that's scaling its engineering function. This is a unique chance to work across both proven, revenue-generating products and greenfield initiatives ...

Senior Backend Engineer | High-Growth Cybersecurity Scale-Up | Fully Remote (UK) Are you ready to build the core systems that power one of the fastest-growing cybersecurity platforms on the planet? This is your chance to join a research-driven, venture-backed security scale-up that’s trusted … funding, and scaling aggressively worldwide, they’re on a mission to reshape how organisations stay ahead of real-world cyber threats. As a Senior Backend Engineer , you’ll play a key role in building scalable, high-performance backend systems that ingest, process, and serve data on millions ...

NodeJS Developer (Backend) Hybrid contract, 6 months Up to £600 per day, OutsideIR35 I am searching for an experienced NodeJS specialist to join a backend engineering team that is responsible for building tools and data pipelines used for ingestion and modelling. Key skills required: • Strong commercial experience ...

NodeJS Developer (Backend) Hybrid contract, 6 months Up to £600 per day, OutsideIR35 I am searching for an experienced NodeJS specialist to join a backend engineering team that is responsible for building tools and data pipelines used for ingestion and modelling. Key skills required: • Strong commercial experience ...

recognition, which verifies not just the device but also the individual user for unparalleled security. About the Role: We are seeking a highly skilled Backend Developer with 8-10+ years of experience to join our dynamic team. The ideal candidate will be responsible for designing, developing … maintaining robust, scalable, and secure backend systems. You will work closely with cross-functional teams to build high-performance APIs, manage databases, and implement cloud-based solutions. Key Responsibilities: ● Develop and maintain backend services using Node.js and TypeScript . ● Build scalable APIs using Nest.js and Express.js . ● Design ...

recognition, which verifies not just the device but also the individual user for unparalleled security. About the Role: We are seeking a highly skilled Backend Developer with 8-10+ years of experience to join our dynamic team. The ideal candidate will be responsible for designing, developing … maintaining robust, scalable, and secure backend systems. You will work closely with cross-functional teams to build high-performance APIs, manage databases, and implement cloud-based solutions. Key Responsibilities: ● Develop and maintain backend services using Node.js and TypeScript . ● Build scalable APIs using Nest.js and Express.js . ● Design ...

Senior/Lead Backend Web Developer – Digital Experience Projects £60,000 – £65,000 Hybrid – London I’m currently partnered with a leading digital experience agency who are looking to bring in a Senior or Lead Backend Web Developer to join their engineering team. This role … engineering culture where you can take real ownership, work on modern digital platforms, and influence how solutions are delivered. If you enjoy combining deep backend engineering with occasional frontend work and client-facing responsibility, this is a fantastic next step. Interested? I’m shortlisting immediately - if you’d like ...

Senior/Lead Backend Web Developer – Digital Experience Projects £60,000 – £65,000 Hybrid – London I’m currently partnered with a leading digital experience agency who are looking to bring in a Senior or Lead Backend Web Developer to join their engineering team. This role … engineering culture where you can take real ownership, work on modern digital platforms, and influence how solutions are delivered. If you enjoy combining deep backend engineering with occasional frontend work and client-facing responsibility, this is a fantastic next step. Interested? I’m shortlisting immediately - if you’d like ...

Location: London, UK Industry: Investment Banking 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 of the 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 team with fellow technologists, business analysts ...

Key Responsibilities AEM Development: Design, develop, and maintain AEM components, templates, workflows, and OSGi services using Java and the Sling framework. Front-End Integration: Collaborate with UX/UI teams to integrate front-end code ...

Backend Software Engineer – Python/FastAPI/Event Driven Architecture Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Salary: £70,000 to £100,000 About the Role: This startup is building a cutting-edge platform to transform how engineers design physical products. Instead of creating … passionate about real-world engineering not just building software, but helping change how things are designed and built. Tech Stack within the engineering environment: Backend: Python, FastAPI, Pydantic, PostgreSQL, Docker Infrastructure: GitHub Actions, GCP, Kubernetes (optional) Paradigms: event-driven architecture Responsibilities Build and maintain backend services using FastAPI ...