1 to 25 of 60 Permanent Backend Developer Jobs in the South East

Senior Backend Developer | Python | FastAPI | AWS | Postgres | Hybrid, London Our Mission We help traditional, operations-heavy businesses grow and scale using modern data and AI tools. These businesses are often the backbone of society—powering the food we eat, the cars we drive, and the buildings we live in. Historically, these industries have been underserved by the tech … sophistication—grow through better use of their data. We're backed by top-tier investors who have supported companies at the forefront of technology and industry transformation. The Role: Backend Developer We’re looking for a Backend Developer to join us at an exciting early stage. You’ll play a critical role in helping us scale … to build reliable systems the right way. We're now looking for someone excited to get hands-on, build new features, and take ownership of key parts of our backend infrastructure. This isn’t just another software job—you’ll be helping redefine what modern infrastructure looks like for an industry that has been overlooked by tech for years. More ❯

Senior Backend Developer | Python | FastAPI | AWS | Postgres | Hybrid, London Our Mission We help traditional, operations-heavy businesses grow and scale using modern data and AI tools. These businesses are often the backbone of society—powering the food we eat, the cars we drive, and the buildings we live in. Historically, these industries have been underserved by the tech … sophistication—grow through better use of their data. We're backed by top-tier investors who have supported companies at the forefront of technology and industry transformation. The Role: Backend Developer We’re looking for a Backend Developer to join us at an exciting early stage. You’ll play a critical role in helping us scale … to build reliable systems the right way. We're now looking for someone excited to get hands-on, build new features, and take ownership of key parts of our backend infrastructure. This isn’t just another software job—you’ll be helping redefine what modern infrastructure looks like for an industry that has been overlooked by tech for years. More ❯

Senior Backend Developer | Python | FastAPI | AWS | Postgres | Hybrid, London Our Mission We help traditional, operations-heavy businesses grow and scale using modern data and AI tools. These businesses are often the backbone of society—powering the food we eat, the cars we drive, and the buildings we live in. Historically, these industries have been underserved by the tech … sophistication—grow through better use of their data. We're backed by top-tier investors who have supported companies at the forefront of technology and industry transformation. The Role: Backend Developer We’re looking for a Backend Developer to join us at an exciting early stage. You’ll play a critical role in helping us scale … to build reliable systems the right way. We're now looking for someone excited to get hands-on, build new features, and take ownership of key parts of our backend infrastructure. This isn’t just another software job—you’ll be helping redefine what modern infrastructure looks like for an industry that has been overlooked by tech for years. More ❯

Senior Backend Developer Python FastAPI AWS Postgres Hybrid, London Our Mission We help traditional, operations-heavy businesses grow and scale using modern data and AI tools. These businesses are often the backbone of society-powering the food we eat, the cars we drive, and the buildings we live in. Historically, these industries have been underserved by the tech … sophistication-grow through better use of their data. We're backed by top-tier investors who have supported companies at the forefront of technology and industry transformation. The Role: Backend Developer We're looking for a Backend Developer to join us at an exciting early stage. You'll play a critical role in helping us scale … to build reliable systems the right way. We're now looking for someone excited to get hands-on, build new features, and take ownership of key parts of our backend infrastructure. This isn't just another software job-you'll be helping redefine what modern infrastructure looks like for an industry that has been overlooked by tech for years. More ❯

Are you a seasoned backend developer looking for your next challenge? We're currently seeking a Senior Backend Developer to join my clients dynamic software development team. In this role, you'll play a crucial and key role in shaping the clients industry leading products and solutions. Your role will involve: Architect and implement robust backend … solutions. Take ownership in mission-critical moments, proactively resolving issues with hands-on engagement and decisive action. We're looking for individuals who possess: Extensive hands-on experience developing backend services using modern JavaScript frameworks, NodeJS and Typescript skills Strong analytical mindset with a knack for dissecting complex issues and identifying effective solutions. Proven ability to independently drive technical More ❯

Senior Backend Developer - Up to £700pd Inside IR35 - Full Remote One of the most recognisable financial services companies in the UK is on the hunt for Backend Engineers. They are revolutionizing the way people manage their money and would love YOU to help them on their journey! You will be responsible for building scalable, high-performance Back … or other cloud platforms Strong test driven development Strong scalability and performance mindset Location - Full remote (from the UK) Duration - 6 months Rate - Up to £700pd inside IR35 Senior Backend Developer - Up to £700pd Inside IR35 - Full Remote More ❯

Backend Developer This role is Hybrid, 3-4 days p/w in London, Camden. La Fosse are partnering with an exciting Ai Scale-Up , who are looking to extend their software development team. The successful candidate will be joining one of the core product development teams to help enhance their products and services. As a Backend Developer, you will be helping deliver ground-breaking Ai products to market, playing a pivotal role in designing, developing, and maintaining current and new capability. Key Requirements: Python Django GraphQL Kubernetes Git Excellent educational background Compensation: This role is offering up to £85,000 + benefits. How to apply: Please apply through the link on this page. More ❯

Backend Developer This role is Hybrid, 3-4 days p/w in London, Camden. La Fosse are partnering with an exciting Ai Scale-Up , who are looking to extend their software development team. The successful candidate will be joining one of the core product development teams to help enhance their products and services. As a Backend Developer, you will be helping deliver ground-breaking Ai products to market, playing a pivotal role in designing, developing, and maintaining current and new capability. Key Requirements: Python Django GraphQL Kubernetes Git Excellent educational background Compensation: This role is offering up to £85,000 + benefits. How to apply: Please apply through the link on this page. More ❯

Backend Developer This role is Hybrid, 3-4 days p/w in London, Camden. La Fosse are partnering with an exciting Ai Scale-Up , who are looking to extend their software development team. The successful candidate will be joining one of the core product development teams to help enhance their products and services. As a Backend Developer, you will be helping deliver ground-breaking Ai products to market, playing a pivotal role in designing, developing, and maintaining current and new capability. Key Requirements: Python Django GraphQL Kubernetes Git Excellent educational background Compensation: This role is offering up to £85,000 + benefits. How to apply: Please apply through the link on this page. More ❯

Backend Developer This role is Hybrid, 3-4 days p/w in London, Camden. La Fosse are partnering with an exciting Ai Scale-Up , who are looking to extend their software development team. The successful candidate will be joining one of the core product development teams to help enhance their products and services. As a Backend Developer, you will be helping deliver ground-breaking Ai products to market, playing a pivotal role in designing, developing, and maintaining current and new capability. Key Requirements: Python Django GraphQL Kubernetes Git Excellent educational background Compensation: This role is offering up to £85,000 + benefits. How to apply: Please apply through the link on this page. More ❯

Backend Java Developer | Up to £65,000 | Guildford | Hybrid At Jonothan Bosworth | Recruitment Specialists, we’re seeking a skilled Backend Java Developer with experience ideally in the telecommunications sector, to join a fast-growing technology provider. With ambitious growth plans and investment backing, this is a chance to join a forward-thinking engineering team where you … ll make a real impact. to design and implement high-availability, mission-critical backend systems. You’ll join a collaborative engineering team delivering scalable solutions for global telecom operations. What you’ll do Design & build: Develop and maintain backend services and microservices using Java. Collaborate broadly: Work with cross-functional teams to deliver scalable telecom solutions. Optimise performance … distributed systems and live client environments. Contribute to Agile: Participate in code reviews and ensure best practices across the lifecycle. What we’re looking for 4+ years’ hands-on backend Java development experience. Strong expertise in RESTful APIs and microservice architectures. Background in distributed systems, OOP, and networking fundamentals. Cloud environment experience (AWS, GCP, etc.), plus Docker/Kubernetes More ❯

Backend Web Developer This is an initial Fixed-term Contract (6-12 months) with the view to make it permanent.Location: Fully Remote (UK)Salary: £38,000 - £48,000 (DOE) The role: We enjoy making the complex simple for our clients. We create websites, campaigns and digital products for professional services clients, arts, fashion, and e-retailers. You’ll … team working across a range of client projects, helping to maintain and enhance existing sites as well as build new ones from the ground up.This role will focus on backend development: solving complex technical challenges, integrating external systems, developing custom plugins, and ensuring our Craft CMS builds are robust, scalable and high-performing.You’ll have the opportunity to contribute … and caching strategies. Familiarity with Composer and modern PHP development practices. Experience with e-commerce functionality within Craft Commerce. What you’ll be expected to do: Develop and maintain backend systems across a range of Craft CMS and Craft Commerce projects. Build and maintain custom plugins and integrations with external APIs and services. Collaborate with project managers, designers, and More ❯

Senior Backend Developer (Python) Kings Cross, London- Onsite 2/3 days a week 6 month contract Inside of IR35 £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 healthcare through technology is essential. The role involves integrating AI/ML components into scalable web applications, collaborating across technical … teams, and continuously improving software quality and performance. Key responsibilities Back end development for a Python web application Integration of AI/ML components with frontend, backend, data and compute infrastructure Responsible for high quality software implementations according to best practices, including automated test suites and documentation Develop, measure, and monitor key metrics for all tools and services and More ❯

Senior Backend Developer (Python) Kings Cross, London- Onsite 2/3 days a week 6 month contract Inside of IR35 £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 healthcare through technology is essential. The role involves integrating AI/ML components into scalable web applications, collaborating across technical … teams, and continuously improving software quality and performance. Key responsibilities Back end development for a Python web application Integration of AI/ML components with frontend, backend, data and compute infrastructure Responsible for high quality software implementations according to best practices, including automated test suites and documentation Develop, measure, and monitor key metrics for all tools and services and More ❯

Senior Backend Developer (Python) Kings Cross, London- Onsite 2/3 days a week 6 month contract Inside of IR35 £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 healthcare through technology is essential. The role involves integrating AI/ML components into scalable web applications, collaborating across technical … teams, and continuously improving software quality and performance. Key responsibilities Back end development for a Python web application Integration of AI/ML components with frontend, backend, data and compute infrastructure Responsible for high quality software implementations according to best practices, including automated test suites and documentation Develop, measure, and monitor key metrics for all tools and services and More ❯

Senior Backend Developer (PHP/Laravel ) - Orpington Hyb rid | Orpington Full-Time | Salary £60,000 - £75,000 Join a fast-growing tech company disrupting the entertainment space. Our client is building a platform that delivers subscription-based services to consumers, and they need a backend wizard to help them scale. Your Role Build fast, scalable systems with More ❯

PHP Developer An exciting opportunity for a PHP Developer to join our expanding digital team at Southampton University Students Union, working on innovative web development projects using PHP, MySQL, JavaScript, HTML and CSS. If youve also worked in the following roles, wed also like to hear from you: Web Programmer, Full Stack Developer, Web Developer, Back … End Developer SALARY: £30,250 - £34,545 per annum (Grade 4) + Benefits (see below) LOCATION: Hybrid Working from Home and a minimum of 3 Days per Week in the Office on Highfield Campus, Southampton JOB TYPE: Full-Time, Permanent WORKING HOURS: 35 Hours per Week JOB OVERVIEW We are recruiting for a PHP Developer to join our … someone who is enthusiastic, hard-working, keen to develop and ready for a new opportunity. Working as our in-house specialist for our back-end platform, as the PHP Developer you will be taking our system to new levels with an ambitious improvement and innovation plan, that will provide the perfect opportunity for you to demonstrate your skills and More ❯

Senior Backend Engineer (PHP) - OOP, PHP, MySQL, TDD - Fareham, Hampshire. This is an in office role. - Salary circa £60,000 plus benefits An exciting new opportunity for a Senior Backend Engineer to join an entrepreneurial business based in Fareham. Working within a dedicated LAMP environment and reporting to the project manager, you will be helping to plan and More ❯

Senior Backend Engineer (PHP) - OOP, PHP, MySQL, TDD - Fareham, Hampshire. This is an in office role. - Salary circa £60,000 plus benefits An exciting new opportunity for a Senior Backend Engineer to join an entrepreneurial business based in Fareham. Working within a dedicated LAMP environment and reporting to the project manager, you will be helping to plan and More ❯

Job 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 pay on top of 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 a lot of technologies, from UI, React, system configuration, Node.js backend code, databases and AWS hosting. So this … is a great opportunity to learn and expand all those skills. What we're looking for from a Back End Developer: The right candidate needs to be hungry to learn, a good problem solver and can prioritise what is important and get it done. It is very much a role that is a combination of a digital detection and More ❯

Job 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 pay on top of 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 a lot of technologies, from UI, React, system configuration, Node.js backend code, databases and AWS hosting. So this … is a great opportunity to learn and expand all those skills. What we’re looking for from a Back End Developer: The right candidate needs to be hungry to learn, a good problem solver and can prioritise what is important and get it done. It is very much a role that is a combination of a digital detection and More ❯

Job 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 pay on top of 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 a lot of technologies, from UI, React, system configuration, Node.js backend code, databases and AWS hosting. So this … is a great opportunity to learn and expand all those skills. What we’re looking for from a Back End Developer: The right candidate needs to be hungry to learn, a good problem solver and can prioritise what is important and get it done. It is very much a role that is a combination of a digital detection and More ❯

Job 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 pay on top of 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 a lot of technologies, from UI, React, system configuration, Node.js backend code, databases and AWS hosting. So this … is a great opportunity to learn and expand all those skills. What we’re looking for from a Back End Developer: The right candidate needs to be hungry to learn, a good problem solver and can prioritise what is important and get it done. It is very much a role that is a combination of a digital detection and More ❯

Senior Backend Engineer (PHP) - OOP, PHP, MySQL, TDD - Fareham, Hampshire. This is an in office role. - Salary circa £60,000 plus benefits An exciting new opportunity for a Senior Backend Engineer to join an entrepreneurial business based in Fareham click apply for full job details More ❯

Senior Backend Engineer (PHP) - OOP, PHP, MySQL, TDD - Fareham, Hampshire. This is an in office role. - Salary circa £60,000 plus benefits An exciting new opportunity for a Senior Backend Engineer to join an entrepreneurial business based in Fareham. Working within a dedicated LAMP environment and reporting to the project manager, you will be helping to plan and More ❯