18 of 18 Backend Developer Jobs in London

Senior Python Backend Developer - Python, AWS, Django Central London/Hybrid -one day in the office £75-85k + benefits Were seeking a topflight Senior Python Backend Developer with a strong software engineering background including 8-9+ years majoring in writing Backend applications using Python and Django (Rest Framework). This is a … seriously weighty, complex, technically challenging role; the successful Backend Developer will be 'red hot' on the core backend skill requirements. Demonstrably the 'go to' person in your role. The Python Backend Developer will be joining a team of 45 at a world-class healthcare scaleup. With each integration of a new hospital group there is … Proactively respond to analytics to ensure our products are robust and meet users needs Take technical ownership of areas of product Required: 8-9+ years of experience writing Backend applications using Python and Django (Rest Framework) or related frameworks, e.g. Flask, FastAPI or similar Good understanding of ORM (either Django or SQLAlchemy) Good understanding of Python Unit Testing More ❯

Backend Developer/Software Engineer (TypeScript Node.js) London/WFH to £100k Are you a senior technologist looking for an opportunity to progress your career in a hands-on role where you can make an impact? You could be joining a scaling tech company that has developed a digital distribution platform transforming electronic trading in the institutional FX … options market via a central marketplace where institutions can place, discover and match option interests electronically - improving liquidity and efficiency for all participants as the platform scales. As a Backend Developer you will collaborate with a small team of technologists and successful entrepreneurs to design and implement intelligent solutions to business needs, with a focus on TypeScript and … Node backend systems but also with exposure to and occasional frontend work. You'll help to ensure best practices are maintained and participate in code reviews to maintain sound engineering practices and share knowledge with the team. Location/WFH: There's a remote first policy, with the caveat that you'll meet up with the team in London More ❯

Contract Backend Developer – Node.js Avanti Recruitment is working with a fast-growing London-based technology business developing smart systems for the property and compliance sector. Their platform integrates hardware and software to provide real-time insights and automated reporting across multiple environments. They’re seeking a Backend Developer with strong Node.js and GraphQL experience to help More ❯

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 that are reshaping the future of insurance. It's an … 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 in shaping the architecture of microservices that support millions of … decisions. This is a high-impact role where your work directly drives product growth, system resilience, and platform evolution. What will I be doing: Design, develop, and optimise scalable backend services in Python, leveraging FastAPI. Lead architectural discussions with a focus on performance, scalability, and reliability. Deliver complex features end-to-end - from design through deployment and monitoring. Provide More ❯

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 in new innovations that will shape the sector for years to come. … 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-based cloud microservices (FastAPI preferred), contributing to the architecture of More ❯

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 that are reshaping the future of insurance click apply for More ❯

may be given to candidates who meet all of the essential criteria and hold active SV clearance. On behalf of The Ministry of Justice, we are looking for a Backend Developer Inside IR35for a 6 month contract based Hybrid London The Ministry of Justice (MoJ) priorities include improving public safety and reducing reoffending by reforming prisons, probation and … government's ability to protect the public and reduce reoffending, and to provide a more effective, transparent and responsive criminal justice system for victims and the public. As a Backend Engineer, your main responsibilities will be: Essential: . Proven experience in Back End development, ideally within a microservices architecture. . Strong knowledge of AWS infrastructure, including deployment, hosting, and More ❯

Infastructure/Backend Developer Contract Type: 6-month initial engagementStart Date: 1st December 2025Location: Remote (UK-based)Rate: £350 per day (Inside IR35)Clearance Required: BPSS prior to start MUST HAVE NHS OR GOVERNMENT EXPERIENCE Role OverviewThe client is seeking a mid-to-senior level contractor with strong backend and infrastructure development experience. The successful candidate will … 3rd line support and develop tools to streamline support operations* Apply test-driven development and CI/CD methodologies in an Agile environment The ideal candidate will:* Have strong backend development experience, ideally with SQL and RDS* Demonstrate excellent problem-solving skills and a passion for working with data* Be comfortable working with legacy Oracle PL/SQL code More ❯

Infastructure/Backend Developer Contract Type: 6-month initial engagement Start Date: 1st December 2025 Location: Remote (UK-based) Rate: £350 per day (Inside IR35) Clearance Required: BPSS prior to start MUST HAVE NHS OR GOVERNMENT EXPERIENCE Role Overview The client is seeking a mid-to-senior level contractor with strong backend and infrastructure development experience. The … 3rd line support and develop tools to streamline support operations * Apply test-driven development and CI/CD methodologies in an Agile environment The ideal candidate will: * Have strong backend development experience, ideally with SQL and RDS * Demonstrate excellent problem-solving skills and a passion for working with data * Be comfortable working with legacy Oracle PL/SQL code More ❯

Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at mid to senior levels who are passionate about crafting exceptional products. Initially it will be a three-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being … in their London. It is a 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 a Server-less first approach … to application design, collaborating within an agile team alongside other backend engineers and product designers. Strategize, develop, test, and deploy new features and experiments. Engage in collaborative coding practices such as pair programming and code reviews within the team. Contribute to resolving the complexities inherent in large-scale systems and extensive datasets. Foster close collaboration with our Product, Data More ❯

Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at mid to senior levels who are passionate about crafting exceptional products. Initially it will be a three-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being … in their London. It is a 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 a Server-less first approach … to application design, collaborating within an agile team alongside other backend engineers and product designers. Strategize, develop, test, and deploy new features and experiments. Engage in collaborative coding practices such as pair programming and code reviews within the team. Contribute to resolving the complexities inherent in large-scale systems and extensive datasets. Foster close collaboration with our Product, Data More ❯

roles where your newly learned skills can be applied meaning a vast array of opportunities are now available to you. Examples of some of these are listed below: - Junior Developer Website Support Developer Junior Web Developer Content Editor Wordpress Developer Junior Software Developer Junior Front or Back End Development Development Support We have been helping More ❯

A global leading Martec organisation is looking to add a talented Staff Software Engineer to their close-knit, back-end software developer community.The role will be hands-on as well as leading the team to shape the future backend systems. As a Staff Software Engineer, you'll lead backend architecture, scaling secure distributed systems for a growing … Tackle challenges in performance, fault tolerance, and data-heavy workloads while influencing product strategy.Requirements: Strong foundations in algorithms, data structures, and distributed systems Experience building and operating large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/ More ❯

A global leading Martec organisation is looking to add a talented Staff Software Engineer to their close-knit, back-end software developer community. The role will be hands-on as well as leading the team to shape the future backend systems. As a Staff Software Engineer, you'll lead backend architecture, scaling secure distributed systems for a … challenges in performance, fault tolerance, and data-heavy workloads while influencing product strategy. Requirements: Strong foundations in algorithms, data structures, and distributed systems Experience building and operating large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/ More ❯

cutting-edge AI/ML solutions aimed at transforming healthcare. This is a 6-month contract , inside IR35 , offering hybrid working (3 days onsite). Key Responsibilities Develop robust backend systems for Python-based web applications Integrate AI/ML components with data, infrastructure, and frontend systems Deliver high-quality, well-documented, and thoroughly tested code Monitor and enhance … performance of tools and services Collaborate across technical teams to build end-to-end data pipelines Skills Required Strong Python backend development experience (FastAPI, Flask, Django). Proven track record of delivering production-grade software at scale. Experience with Docker and containerisation. Familiarity with cloud deployment and troubleshooting cloud-related issues. Comfortable working in modern cloud-native environments with More ❯

Chief Technology Officer (CTO) - Hands-On Back-End Developer Remote-Friendly London HQ Award-Winning Agricultural Technology Software Company Join an award-winning agricultural analytics software company that's redefining sustainable food production through data-driven technology . We're seeking a hands-on Chief Technology Officer (CTO) an exceptional technical leader who thrives on both strategic vision and … time constraints Ideal Candidate Profile Academic and Professional Background Degree/Masters/PhD in Computer Science, Data Science, or a related discipline Proven experience as a Back-End Developer/Engineering Lead/CTO in data-heavy environments Demonstrable history of technical excellence and leadership in commercial software development Technical Expertise Advanced proficiency in C#/.NET Core More ❯

Chief Technology Officer (CTO) - Hands-On Back-End Developer Remote-Friendly | London HQ | Award-Winning Agricultural Technology Software Company Join an award-winning agricultural analytics software company that's redefining sustainable food production through data-driven technology . We're seeking a hands-on Chief Technology Officer (CTO) — an exceptional technical leader who thrives on both strategic vision and … time constraints Ideal Candidate Profile Academic and Professional Background Degree/Masters/PhD in Computer Science, Data Science, or a related discipline Proven experience as a Back-End Developer/Engineering Lead/CTO in data-heavy environments Demonstrable history of technical excellence and leadership in commercial software development Technical Expertise Advanced proficiency in C#/.NET Core More ❯

Fully Remote Award-Winning Agricultural Technology Software Company Competitive salary plus company share scheme Chief Technology Officer (CTO) - Hands-On Back-End Developer Remote-Friendly | London HQ | Award-Winning Agricultural Technology Software Company Join an award-winning agricultural analytics software company that's redefining sustainable food production through data-driven technology .We're seeking a hands-on Chief Technology … time constraints Ideal Candidate Profile Academic and Professional Background Degree/Masters/PhD in Computer Science, Data Science, or a related discipline Proven experience as a Back-End Developer/Engineering Lead/CTO in data-heavy environments Demonstrable history of technical excellence and leadership in commercial software development Technical Expertise Advanced proficiency in C#/.NET Core More ❯