26 to 50 of 62 Backend Developer Jobs in the South East

products, reduce fraud and identify innovative ways for them to tackle business challenges through their in-app, online and face-to-face payments. We are seeking a passionate Senior Backend Scala Developer to join our API Team. Your primary objective is to support and expand our new "Shodan" payment platform. This is built almost entirely in Scala, based More ❯

products, reduce fraud and identify innovative ways for them to tackle business challenges through their in-app, online and face-to-face payments. We are seeking a passionate Senior Backend Scala Developer to join our API Team. Your primary objective is to support and expand our new "Shodan" payment platform. This is built almost entirely in Scala, based More ❯

Backend Software Engineer Term: 6 Months Pay: £888 per day Inside IR35 Location: Kings Cross London Hybrid Our client see a world in which advanced applications of Machine Learning and AI will allow us to develop novel therapies to existing diseases and to quickly respond to emerging or changing diseases with personalized drugs, driving better outcomes at reduced cost … will be committed to your career and development from day one. 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 … technical staff and data engineers in the team and across allied teams, to build an end-to-end pipeline consuming other data products Basic qualifications: Demonstrated experience of Python backend development (e.g. using FastAPI) Bachelors degree in a relevant field (including computational, numerate or life sciences), or equivalent experience Cloud experience (e.g. Google Cloud and cloud run preferred) including More ❯

Backend Software Engineer Term: 6 Months Pay: £888 per day Inside IR35 Location: Kings Cross London Hybrid Our client see a world in which advanced applications of Machine Learning and AI will allow us to develop novel therapies to existing diseases and to quickly respond to emerging or changing diseases with personalized drugs, driving better outcomes at reduced cost … will be committed to your career and development from day one. 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 … technical staff and data engineers in the team and across allied teams, to build an end-to-end pipeline consuming other data products Basic qualifications: Demonstrated experience of Python backend development (e.g. using FastAPI) Bachelors degree in a relevant field (including computational, numerate or life sciences), or equivalent experience Cloud experience (e.g. Google Cloud and cloud run preferred) including More ❯

NoSQL databases, REST and SOAP API, Microservices, Angular/React/Node or similar frameworks Location - Burgess Hill, UK Compensation - Competitive (including bonus) Infosys is seeking a Lead Golang Developer Required Qualifications Experienced Golang developer with at least 7 years of hands-on expertise for backend development Strong experience in building high-performance, low latency backend … to work in a Global delivery environment. Preferred Qualifications: Ability to work in team in diverse/multiple stakeholder environment Ability to lead a technology development team as Lead Developer Experience in Financial Services domain and specifically on Credit Card domain The job entails sitting as well as working at a computer for extended periods of time. Should be More ❯

NoSQL databases, REST and SOAP API, Microservices, Angular/React/Node or similar frameworks Location – Burgess Hill, UK Compensation – Competitive (including bonus) Infosys is seeking a Lead Golang Developer Required Qualifications Experienced Golang developer with at least 7 years of hands-on expertise for backend development Strong experience in building high-performance, low latency backend … to work in a Global delivery environment. Preferred Qualifications: Ability to work in team in diverse/multiple stakeholder environment Ability to lead a technology development team as Lead Developer Experience in Financial Services domain and specifically on Credit Card domain The job entails sitting as well as working at a computer for extended periods of time. Should be More ❯

NoSQL databases, REST and SOAP API, Microservices, Angular/React/Node or similar frameworks Location – Burgess Hill, UK Compensation – Competitive (including bonus) Infosys is seeking a Lead Golang Developer Required Qualifications Experienced Golang developer with at least 7 years of hands-on expertise for backend development Strong experience in building high-performance, low latency backend … to work in a Global delivery environment. Preferred Qualifications: Ability to work in team in diverse/multiple stakeholder environment Ability to lead a technology development team as Lead Developer Experience in Financial Services domain and specifically on Credit Card domain The job entails sitting as well as working at a computer for extended periods of time. Should be More ❯

Join a fast-paced technology team developing innovative applications using PHP, Nginx, RabbitMQ, and Google Cloud Platform (GCP) . You’ll work with custom in-house frameworks (full training provided) and collaborate across departments to design, develop, and enhance scalable More ❯

Join a fast-paced technology team developing innovative applications using PHP, Nginx, RabbitMQ, and Google Cloud Platform (GCP) . You’ll work with custom in-house frameworks (full training provided) and collaborate across departments to design, develop, and enhance scalable More ❯

Senior Backend Software Engineer - London (Hybrid) Equity + Competitive Salary Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. We're building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical problems, shaping architecture, and seeing … your code have a real-world impact, this is a chance to build something meaningful from the ground up. The Role We're looking for a Senior Backend Engineer to take ownership of key backend services that power our AI-driven platform. You'll work closely with product, frontend, and AI teams to design, build, and scale backend … ll join a small, high-calibre team where your ideas genuinely shape the direction of the product and the company. What You'll Be Doing Architect, design, and build backend applications using Node.js (TypeScript) and NestJS . Develop microservices and event-driven systems with asynchronous communication patterns. Write clean, maintainable, and well-tested code (unit + integration). Design More ❯

Senior Backend Software Engineer – London (Hybrid) | Equity + Competitive Salary Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. We’re building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical problems, shaping architecture, and seeing … your code have a real-world impact, this is a chance to build something meaningful from the ground up. 💡 The Role We’re looking for a Senior Backend Engineer to take ownership of key backend services that power our AI-driven platform. You’ll work closely with product, frontend, and AI teams to design, build, and scale backend … ll join a small, high-calibre team where your ideas genuinely shape the direction of the product and the company. 🔧 What You’ll Be Doing Architect, design, and build backend applications using Node.js (TypeScript) and NestJS . Develop microservices and event-driven systems with asynchronous communication patterns. Write clean, maintainable, and well-tested code (unit + integration). Design More ❯

Senior Backend Software Engineer – London (Hybrid) | Equity + Competitive Salary Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. We’re building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical problems, shaping architecture, and seeing … your code have a real-world impact, this is a chance to build something meaningful from the ground up. 💡 The Role We’re looking for a Senior Backend Engineer to take ownership of key backend services that power our AI-driven platform. You’ll work closely with product, frontend, and AI teams to design, build, and scale backend … ll join a small, high-calibre team where your ideas genuinely shape the direction of the product and the company. 🔧 What You’ll Be Doing Architect, design, and build backend applications using Node.js (TypeScript) and NestJS . Develop microservices and event-driven systems with asynchronous communication patterns. Write clean, maintainable, and well-tested code (unit + integration). Design More ❯

Senior Backend Software Engineer – London (Hybrid) | Equity + Competitive Salary Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. We’re building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical problems, shaping architecture, and seeing … your code have a real-world impact, this is a chance to build something meaningful from the ground up. 💡 The Role We’re looking for a Senior Backend Engineer to take ownership of key backend services that power our AI-driven platform. You’ll work closely with product, frontend, and AI teams to design, build, and scale backend … ll join a small, high-calibre team where your ideas genuinely shape the direction of the product and the company. 🔧 What You’ll Be Doing Architect, design, and build backend applications using Node.js (TypeScript) and NestJS . Develop microservices and event-driven systems with asynchronous communication patterns. Write clean, maintainable, and well-tested code (unit + integration). Design More ❯

Back End Developer Home-based within the UK About Us At Family Action, we transform lives by providing practical, emotional and financial support to those experiencing poverty, disadvantage and social isolation.Since 1869, we’ve been building stronger families, and today, we work with over 60,000 families across more than 190 services. We also support thousands more through national … programmes and grants, helping everyone find the tools to overcome challenges and thrive.We’re now looking for a Back End Developer to join us on a full-time, permanent basis, working 37 hours per week. The Benefits - Salary of £43,042 per annum (inclusive of £1,044 market supplement and £480 home working allowance)- An annual paid leave entitlement … re someone who loves solving problems, building elegant solutions and being part of a mission that really matters, read on and apply today! The Role As a Back End Developer, you’ll design, build, and run secure, scalable backend services that power our web applications and keep things running smoothly behind the scenes.Specifically, you’ll develop APIs and More ❯

more, all designed to simplify and strengthen online safety for everyday users. With continuous growth and new product innovation underway, the team is now looking for an experienced PHP Developer to join their high-performing engineering function. The Role As a Senior PHP Developer, youll play a key part in shaping and improving the companys core web systems. More ❯

A multi award-winning antivirus and cybersecurity company based in Fareham, Hampshire, is expanding and seeking talented individuals to join its team. The company provides advanced online protection through a suite of products designed to safeguard users from the latest More ❯

A multi award-winning antivirus and cybersecurity company based in Fareham, Hampshire, is expanding and seeking talented individuals to join its team. The company provides advanced online protection through a suite of products designed to safeguard users from the latest More ❯

Senior Backend Engineer – Python | Django | FastAPI | AWS Build systems that power the future of AI Are you a high-agency backend engineer who thrives on solving complex problems at scale? Do you enjoy designing secure, production-grade systems and shipping robust APIs that make advanced technology accessible? Would you like to shape core infrastructure for AI-powered products … be the opportunity that unlocks your next big career move. About the Role Our client – an innovative, deep tech start-up based in the UK – is seeking a Senior Backend Engineer with expertise in Python (Django or Flask) to architect and deliver production-grade systems for cutting-edge AI products. This is a role for engineers who enjoy owning … backend services end-to-end – from design to deployment and everything in between. You'll play a pivotal role in building secure, scalable APIs, optimising infrastructure, and integrating backend services directly with AI models and real-time inference pipelines. This is a hybrid role with flexible hours , offering rapid career progression and a chance to define best practices More ❯

Senior Backend Engineer – Python | Django | FastAPI | AWS Build systems that power the future of AI Are you a high-agency backend engineer who thrives on solving complex problems at scale? Do you enjoy designing secure, production-grade systems and shipping robust APIs that make advanced technology accessible? Would you like to shape core infrastructure for AI-powered products … be the opportunity that unlocks your next big career move. About the Role Our client – an innovative, deep tech start-up based in the UK – is seeking a Senior Backend Engineer with expertise in Python (Django or Flask) to architect and deliver production-grade systems for cutting-edge AI products. This is a role for engineers who enjoy owning … backend services end-to-end – from design to deployment and everything in between. You'll play a pivotal role in building secure, scalable APIs, optimising infrastructure, and integrating backend services directly with AI models and real-time inference pipelines. This is a hybrid role with flexible hours , offering rapid career progression and a chance to define best practices More ❯

About Us At Xelix, we work with some of the world's largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate - moving from manual processes to automated, intelligent workflows. Xelix is 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 Essential Skills Proven experience in Python backend development (e.g. FastAPI) Strong cloud-native development skills, ideally with Google Cloud Familiarity with DevOps practices, automated testing (e.g. pytest), and agile methodologies Passion for healthcare innovation and continuous learning Bonus: Background in biological sciences or More ❯

who enjoys solving complex problems and building clean, efficient systems in the cloud, this role is for you. What You'll Do Design and develop robust, scalable, and maintainable backend services. Contribute to architectural decisions and suggest new tools, frameworks, or best practices. Collaborate closely with cross-functional teams including Product, Design, and Delivery. Participate in code reviews, pair More ❯

who enjoys solving complex problems and building clean, efficient systems in the cloud, this role is for you. What You’ll Do Design and develop robust, scalable, and maintainable backend services. Contribute to architectural decisions and suggest new tools, frameworks, or best practices. Collaborate closely with cross-functional teams including Product, Design, and Delivery. Participate in code reviews, pair More ❯

who enjoys solving complex problems and building clean, efficient systems in the cloud, this role is for you. What You’ll Do Design and develop robust, scalable, and maintainable backend services. Contribute to architectural decisions and suggest new tools, frameworks, or best practices. Collaborate closely with cross-functional teams including Product, Design, and Delivery. Participate in code reviews, pair More ❯

forward-thinking environment where your contributions will have real impact. We're looking for a Back End Engineer to join our London-based team and help build scalable, maintainable backend services that power seamless customer experiences. You'll be part of a collaborative, agile environment with a strong engineering culture and a modern tech stack. What You'll Be … Doing Designing and building robust backend services using Python and AWS Collaborating with cross-functional teams including Product, Design, and Sales Participating in code reviews, pair programming, and technical presentations Contributing to continuous improvement of Agile processes and engineering practices Tech Stack Python FastAPI AWS Django PostgreSQL OpenSearch Kubernetes Helm Terraform GitHub What We're Looking For Strong Python More ❯