16 backend software developer jobs found

Lead Backend Software Developer (Contract) London, Outside IR35 £500-£600 per day This is an exciting opportunity to join a fast-moving engineering function at a pivotal moment of technical uplift. They are investing heavily in strengthening their core platforms and commercial data systems, creating a strong mandate for senior engineers to step in, lead, and make an immediate impact. The Company They are a growing digital gaming organisation operating across multiple markets, currently modernising their Back End ecosystem. With distributed teams across the UK and Europe, they are building scalable platforms that support a variety of customer-facing and internal products. Engineering quality, strong technical leadership, and delivery excellence are central to their transformation. Contractors join at a time when technical ownership is expanding in-house, creating real scope to shape systems and standards. The Role and Deliverables: Lead Back End development across a complex...

Senior Full Stack Developer (TypeScript / Vue.js / C# / .NET) Fully Remote (UK-based) Contract – Outside IR35 Long-Term Contract Competitive Day Rate We’re working with a well-established organisation undergoing a major platform transformation programme , and they’re looking to add an experienced Full Stack Developer to the team. This role will suit someone who enjoys owning features end-to-end , with strong frontend expertise while remaining comfortable working across APIs, databases, and backend services in a modern environment. What You’ll Be Doing Developing and enhancing customer-facing platforms and transactional systems Building modern applications using Vue.js and TypeScript Working closely with product, QA, and engineering teams to deliver new features Investigating and resolving production issues across frontend, APIs, and databases Contributing to architecture discussions and technical improvements Supporting platform modernisation...

Senior Backend Python Developer (Contract) Contract: Rolling 3-Month Contract Location: Fully Remote (UK Based Only) Rate: £300 per day IR35 Status: Outside IR35 Start Date: ASAP Please note: Applicants must be based in the UK. Sponsorship is not available for this position. The Opportunity We're working with a growing technology-driven organisation looking for a strong Senior Backend Python Developer to join their engineering team on an initial 3-month contract with a high likelihood of extension. This is a hands-on backend-focused role where you'll be responsible for designing, developing, and maintaining scalable services, APIs, and integrations that underpin critical business applications. You'll be working closely with architects, product teams, and fellow engineers to deliver high-quality solutions in a fast-paced Agile environment. The ideal candidate will be an experienced Python developer with a strong understanding of modern backend engineering...

Full Stack Developer (SC Cleared) Location: Farnborough (Hybrid Working) Contract Type: Outside IR35 Day Rate: Competitive DOE Security Clearance: Active SC Clearance Required Contract Full Stack Developer – AI & Data Platforms We're supporting a Defence Technology organisation delivering innovative digital solutions into National Security and Defence environments. They are seeking an experienced SC Cleared Full Stack Developer to support the development of next-generation AI-powered applications, data platforms, and mission-critical software solutions. This role offers the opportunity to work across the full development lifecycle, building scalable applications, integrating complex data pipelines, and supporting the delivery of cutting-edge AI and Large Language Model (LLM) capabilities. Responsibilities Design, develop, and maintain full-stack applications within secure environments Build and integrate scalable data pipelines supporting AI and...

Senior Backend Python Developer (Contract) Contract: Rolling 3-Month Contract Location: Fully Remote (UK Based Only) Rate: £300 per day IR35 Status: Outside IR35 Start Date: ASAP Please note: Applicants must be based in the UK. Sponsorship is not available for this position. The Opportunity We're working with a growing technology-driven organisation looking for a strong Senior Backend Python Developer to join their engineering team on an initial 3-month contract with a high likelihood of extension. This is a hands-on backend-focused role where you'll be responsible for designing, developing, and maintaining scalable services, APIs, and integrations that underpin critical business applications. You'll be working closely with architects, product teams, and fellow engineers to deliver high-quality solutions in a fast-paced Agile environment. The ideal candidate will be an experienced Python developer with a strong understanding of modern backend engineering...

Job Information Date Opened 02/06/2026 Job Type Contract Work Experience 5+ years Industry IT Services Salary £450-£500 Outside IR35 City Taunton Province Somerset Country United Kingdom Postal Code TA1 Job Description bout Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter. Overview We are seeking an experienced Lead Technical Developer to provide hands-on technical leadership within a client delivery team. You will be...

Job Information Date Opened 02/06/2026 Job Type Contract Work Experience 5+ years Industry IT Services Salary £400-£425 Outside Ir35 City Taunton Province Somerset Country United Kingdom Postal Code TA1 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter. Role Purpose Join a blended agile delivery squad working on large-scale, secure digital services for a government client. As a Senior...

Job Information Date Opened 02/06/2026 Job Type Contract Work Experience 5+ years Industry IT Services Salary £450-£500 Outside IR35 City Taunton Province Somerset Country United Kingdom Postal Code TA1 Job Description bout Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter. Overview We are seeking an experienced Lead Technical Developer to provide hands-on...

Job Information Date Opened 02/06/2026 Job Type Contract Work Experience 5+ years Industry IT Services Salary £400-£425 Outside Ir35 City Taunton Province Somerset Country United Kingdom Postal Code TA1 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter. Role Purpose Join a blended agile delivery squad working on large-scale, secure...

A rapidly growing technology-led organization is seeking an experienced Senior Full Stack Developer to spearhead the development and evolution of their core business systems and integrations. This is a hands-on opportunity to contribute to a collaborative, agile, and fast-moving environment with a strong focus on engineering quality and continuous improvement. The Role Contribute across the full software lifecycle, from technical design to deployment and optimization Focus on backend development using Python, APIs, integrations, and platform engineering Contribute to frontend development using Vue.js Collaborate closely with engineering leadership on technical direction and solution design Participate in architecture discussions and contribute to long-term technical strategy Perform code reviews and support engineering best practices What You'll Need Minimum 5 years' commercial experience as a Full Stack Developer Strong backend development...

Senior Java Developer Java | JSF | Microservices | CI/CD | Git | TDD | Jest | MuleSoft We're looking for an experienced Senior Java Developer to support the delivery of modern, scalable software solutions within a collaborative engineering environment. This role would suit someone with strong back-end Java development experience, who is also comfortable contributing across the full stack, particularly around JSF-based UI development. You'll be working closely with backend and integration teams to design, build, test and deliver high-quality software within a component and microservice-based architecture. The Role: You'll be involved in the full software delivery lifecycle, contributing to solution design, development, testing and continuous delivery. The successful candidate will be expected to bring strong engineering standards, a quality-first mindset and the ability to work effectively across technical teams. Key Responsibilities: Develop and maintain high-quality...

Senior Java Developer Java JSF Microservices CI/CD Git TDD Jest MuleSoft We're looking for an experienced Senior Java Developer to support the delivery of modern, scalable software solutions within a collaborative engineering environment. This role would suit someone with strong back-end Java development experience , who is also comfortable contributing across the full stack, particularly around JSF-based UI development . You'll be working closely with backend and integration teams to design, build, test and deliver high-quality software within a component and microservice-based architecture. The Role: You'll be involved in the full software delivery lifecycle, contributing to solution design, development, testing and continuous delivery. The successful candidate will be expected to bring strong engineering standards, a quality-first mindset and the ability to work effectively across technical teams. Key Responsibilities: Develop and maintain...

Senior Java Developer Java | JSF | Microservices | CI/CD | Git | TDD | Jest | MuleSoft We're looking for an experienced Senior Java Developer to support the delivery of modern, scalable software solutions within a collaborative engineering environment. This role would suit someone with strong back-end Java development experience , who is also comfortable contributing across the full stack, particularly around JSF-based UI development . You'll be working closely with Back End and integration teams to design, build, test and deliver high-quality software within a component and microservice-based architecture. The Role: You'll be involved in the full software delivery lifecycle, contributing to solution design, development, testing and continuous delivery. The successful candidate will be expected to bring strong engineering standards, a quality-first mindset and the ability to work effectively across technical teams. Key Responsibilities: Develop and maintain...

Java / Microservices / API design / LLMs / AI / Claude Code / Copilot Company:  Financial Services Location:  London - Hybrid 3 days per week Rate:  £575 IR35:  Outside CORE BANKING AND TRADING SYSTEMS EXPERIENCE ESSENTIAL Join a newly formed Service Modernisation & AI team driving AI-first software development in financial services. This is a hands-on role modernising high-impact legacy services while building AI-powered engineering workflows. What You’ll Do Modernise critical legacy Java services using AI-driven analysis and refactoring Apply migration patterns (e.g. strangler fig) to deliver clean, modern APIs Ship improvements in fast cycles with measurable gains in performance and reliability Build AI-powered tooling, including MCP servers and AI-assisted CI/CD pipelines Demonstrate how AI transforms developer productivity and code quality What We’re Looking For 6+ years’ backend engineering experience (Java)...

Senior Test Analyst (API & Integration Testing) - Contract Location: Milton Keynes x2-3 days per week onsite Rate: £390-£400 per day Contract: Outside IR35 The Role Our customer, a leading automotive organisation, is seeking an experienced Senior Test Analyst to support a major transformation programme involving complex system integrations, data migration activities and API-driven applications. Working within a fast-paced delivery environment, you will play a key role in ensuring the quality, reliability and performance of business-critical systems. You will be responsible for designing and executing comprehensive test strategies, validating data migration activities and ensuring seamless integration across multiple internal and third-party platforms. This is a hands-on role requiring strong experience across API testing, manual testing and integration testing. You will work closely with business stakeholders, developers, architects and project teams to ensure...

Senior Test Analyst (API & Integration Testing) - Contract Location: Milton Keynes x2-3 days per week onsite Rate: £390- £400 per day Contract: Outside IR35 The Role Our customer, a leading automotive organisation, is seeking an experienced Senior Test Analyst to support a major transformation programme involving complex system integrations, data migration activities and API-driven applications. Working within a fast-paced delivery environment, you will play a key role in ensuring the quality, reliability and performance of business-critical systems. You will be responsible for designing and executing comprehensive test strategies, validating data migration activities and ensuring seamless integration across multiple internal and third-party platforms. This is a hands-on role requiring strong experience across API testing, manual testing and integration testing. You will work closely with business stakeholders, developers, architects and...