16 contract software engineer jobs found

Senior Java & Kotlin Backend Engineer Location: London (Hybrid - Wednesday office attendance required) Contract: Initial 2 months IR35: Outside IR35 Start Date: ASAP The Role We're working with a leading technology organisation seeking an experienced Senior Java & Kotlin Backend Engineer to join their engineering team on an initial two-month contract. This role offers the opportunity to contribute to greenfield backend development, building scalable, cloud-native microservices within a modern engineering environment. You'll work alongside cross-functional teams to design, develop and deliver high-quality backend solutions that are secure, reliable and built for scale. Key Responsibilities Design, develop and maintain backend services using Java and Kotlin. Build and enhance RESTful APIs within a microservices architecture. Develop secure, scalable and high-performance applications. Collaborate with Product Managers, Engineers and technical...

Senior Java & Kotlin Backend Engineer Location: London (Hybrid - Wednesday office attendance required) Contract: Initial 2 months IR35: Outside IR35 Start Date: ASAP The Role We 're working with a leading technology organisation seeking an experienced Senior Java & Kotlin Backend Engineer to join their engineering team on an initial two-month contract. This role offers the opportunity to contribute to greenfield backend development, building scalable, cloud-native microservices within a modern engineering environment. You 'll work alongside cross-functional teams to design, develop and deliver high-quality backend solutions that are secure, reliable and built for scale. Key Responsibilities Design, develop and maintain backend services using Java and Kotlin. Build and enhance RESTful APIs within a microservices architecture. Develop secure, scalable and high-performance applications. Collaborate with...

Senior Data Engineer - Azure Central government | Outside IR35 | Remote | 6 months + SR2 is working with a consultancy that is expanding its data engineering capability to support the delivery of a large-scale cloud data platform. They are looking for an experienced Data Engineer to help design and develop modern data solutions capable of handling complex, high-volume datasets. You'll join a multidisciplinary team responsible for developing and evolving a cloud-based data platform. Working across the full data lifecycle, you'll help shape how data is collected, processed, governed and consumed, while contributing to architectural decisions and engineering best practice. A significant proportion of the work involves processing complex location-based datasets, making previous exposure to geospatial or mapping-related data highly beneficial. Requirements: Strong commercial experience delivering data engineering solutions in Azure. Strong hands-on experience working with Azure...

Remote Contract (UK Candidates only) Ideal start date: ASAP Contract Duration: 6 Months Outside IR35 Rate: £500-600 p/d Elsewhen, a London-based consultancy, designs and builds technology solutions for clients like Spotify, Google, Inmarsat, and Zego. Over the past decade, we have built a workplace prioritising impact, drive, and friendliness. We value outcomes over hours and agility over rigid processes. Work Environment: Fully Remote in the UK Join our team:https://www.elsewhen.com. We are looking for a talented Senior AI Engineer to join a brand new delivery squad focused on solving new client problems in 4-week cycles. Each project is designed to produce a working pilot that demonstrates clear value, not a polished long-term system. You’ll work in a 4-person team (AI Engineer, Product Manager, Data Scientist, Principal for AI Engineering), using AI coding tools (e.g. Claude Code) to reduce build time and get solutions into a...

Remote Contract (UK Candidates only) Ideal start date: ASAP Contract Duration: 6 Months Outside IR35 Rate: £500-600 p/d Elsewhen, a London-based consultancy, designs and builds technology solutions for clients like Spotify, Google, Inmarsat, and Zego. Over the past decade, we have built a workplace prioritising impact, drive, and friendliness. We value outcomes over hours and agility over rigid processes. Work Environment: Fully Remote in the UK Join our team:https://www.elsewhen.com. We are looking for a talented Senior AI Engineer to join a brand new delivery squad focused on solving new client problems in 4-week cycles. Each project is designed to produce a working pilot that demonstrates clear value, not a polished long-term system. You’ll work in a 4-person team (AI Engineer, Product Manager, Data Scientist, Principal for AI Engineering), using AI coding tools (e.g. Claude Code) to reduce...

Opportunity for a Principal Software Engineer to work for a retail company near Manchester going through a large digital transformation. This is an initial 6-month contract outside IR35 to help deliver re-platforming of existing systems to an event-driven MACH architecture. Skills: TypeScript, Node, React AWS, Lambdas Event-driven MACH architecture CI/CD In return they're offering an initial 6-month outside IR35 contract paying up to £600/day. If you're interested and would like to know more, please apply through this advert and I'll be in touch.

Opportunity for a Senior Software Engineer to work for a retail company near Manchester going through a large digital transformation. This is an initial 6-month contract outside IR35 to help deliver re-platforming of existing systems to an event-driven MACH architecture. Skills: TypeScript, Node, React AWS, Lambdas Event-driven MACH architecture CI/CD In return they're offering an initial 6-month outside IR35 contract paying up to £500/day. If you're interested and would like to know more, please apply through this advert and I'll be in touch.

Senior Data Engineer - Azure Central government | Outside IR35 | Remote | 6 months + SR2 is working with a consultancy that is expanding its data engineering capability to support the delivery of a large-scale cloud data platform. They are looking for an experienced Data Engineer to help design and develop modern data solutions capable of handling complex, high-volume datasets. You'll join a multidisciplinary team responsible for developing and evolving a cloud-based data platform. Working across the full data lifecycle, you'll help shape how data is collected, processed, governed and consumed, while contributing to architectural decisions and engineering best practice. A significant proportion of the work involves processing complex location-based datasets, making previous exposure to geospatial or mapping-related data highly beneficial. Requirements: Strong commercial experience delivering data engineering solutions in Azure. Strong hands-on experience working with...

QA Engineer – Remote | £475–£500/day | Outside IR35 - 3 Month Contract We are looking for an experienced QA Engineer to join our team on a 3 month contract. This role is paying £475–£500 per day and is Outside IR35 . You will be responsible for ensuring the quality and reliability of API integrations and payment-related workflows, working closely with developers to validate new features, identify defects, and support the delivery of robust, high-quality software. Core Requirements Strong commercial experience testing C#/.NET APIs Hands-on experience with testing tools such as Postman, REST Assured, Playwright , or similar automation/testing frameworks Experience testing webhooks , asynchronous event-driven workflows , and terminal/POS transaction flows Solid understanding of API testing, debugging, and validating request/response behaviour Experience creating and executing test cases, identifying defects, and working collaboratively with development...

Full Stack Engineer - Azure, C#, .Net, React / ReactJS ⭐ Outside IR35 ⭐ 12 Month Contract ⭐ Fully Remote (UK only) ⭐ £375 - 425 Per Day We're currently working with a London based MedTech company who are searching for a Full Stack Engineer who has extensive experience working with Azure, C#, .Net and React / ReactJS. This project will see you working alongside a small existing team of developers, adding additional capacity to make business critical updates and enhancement to their existing Azure based core platform, with the bulk of the work will focus on enhancing the workflow engine! We are looking for an experienced Full Stack Engineer who is comfortable working on complex software platforms and is able to get up to speed quickly in new environments. Required Skills / Experience Extensive commercial experience with: 🔥 Azure - Azure Functions, Azure API Management, Azure Services, Azure B2C Directory, Azure Pipelines etc 🔥 React / ReactJS 🔥 C# 🔥 .Net...

Full Stack Engineer - Azure, C#, .Net, React / ReactJS Outside IR35 12 Month Contract Fully Remote (UK only) £375 - 425 Per Day We 're currently working with a London based MedTech company who are searching for a Full Stack Engineer who has extensive experience working with Azure, C#, .Net and React / ReactJS. This project will see you working alongside a small existing team of developers, adding additional capacity to make business critical updates and enhancement to their existing Azure based core platform, with the bulk of the work will focus on enhancing the workflow engine! We are looking for an experienced Full Stack Engineer who is comfortable working on complex software platforms and is able to get up to speed quickly in new environments. Required Skills / Experience Extensive commercial experience with: Azure - Azure Functions, Azure API Management, Azure Services, Azure B2C Directory, Azure...

DevOps Azure (SC Cleared) Taunton (Hybrid) 3 - 6 Month Contract £500/day (Outside IR35) DevOps Engineer needed with active SC Security Clearance and strong hands-on Azure Cloud experience. 3 to 6 Month Contract based in Taunton (Hybrid). Hybrid Working - primarily working remotely from home with travel to the Taunton (Somerset) office typically 3 times per month. A chance to work with a leading global IT transformation on a large-scale Government project. Paying up to £500/day (Outside IR35). Start ASAP during Summer 2026. Key skills, experience + tasks will include: DevOps Engineer to support the design, implementation + maintenance of secure, scalable + automated cloud environments within a regulated Azure ecosystem. Working closely with Lead Developers, DevOps Leads, Architects + Testers to enable efficient software delivery through automation, Infrastructure as Code (IaC), CI/CD pipelines, and cloud platform management. Hands-on DevOps Engineer who can drive...

We're working with an innovative UK technology business that's transforming the way scientific organisations analyse complex imaging data. They're entering an exciting phase of product development as they evolve a proven proof-of-concept into a scalable, enterprise-grade AI SaaS platform. They're looking for a Senior Full Stack Engineer to join the team on an initial 6-month contract, taking ownership of key platform features across the full technology stack while helping shape the technical direction of a next-generation AI product. You'll play a key role in building a production-ready, cloud-native SaaS platform that combines modern web technologies with machine learning capabilities. Working closely with Product, Design and Engineering, you'll take features from concept through to deployment, delivering scalable, secure and maintainable solutions. This is a hands-on engineering role with plenty of autonomy, ideal for someone who enjoys working in fast-moving product...

DevOps Azure (SC Cleared) Taunton (Hybrid) 3 - 6 Month Contract £500/day (Outside IR35) DevOps Engineer needed with active SC Security Clearance and strong hands-on Azure Cloud experience. 3 to 6 Month Contract based in Taunton (Hybrid). Hybrid Working - primarily working remotely from home with travel to the Taunton (Somerset) office typically 3 times per month. A chance to work with a leading global IT transformation on a large-scale Government project. Paying up to £500/day (Outside IR35). Start ASAP during Summer 2026. Key skills, experience + tasks will include: DevOps Engineer to support the design, implementation + maintenance of secure, scalable + automated cloud environments within a regulated Azure ecosystem. Working closely with Lead Developers, DevOps Leads, Architects + Testers to enable efficient software delivery through automation, Infrastructure as Code (IaC), CI/CD pipelines, and cloud platform management. Hands-on DevOps Engineer who can drive...

Embedded Linux Engineer 6-Month Contract Competitive Day Rate Outside IR35 First Week Onsite (Abingdon or Scarborough), Followed by Remote working We are looking for an experienced Embedded Linux Engineer to join an innovative engineering team on an initial 6-month contract. The client has recently migrated to Embedded Linux and is looking for an engineer to help enhance and modernise the platform, improving performance, stability and real-time capabilities. You 'll be responsible for reviewing the existing Linux implementation, enhancing the current architecture, and bringing the platform up to date using modern Embedded Linux best practices. Working closely with hardware and software teams, you 'll play a key role in the ongoing evolution of the client 's embedded products. Key skills and responsibilities, Strong commercial experience developing Embedded Linux solutions. Experience with Buildroot for creating and maintaining embedded Linux systems....

.Net Developer/Dot Net Developer; Security cleared, Azure, Rest API Active SC, Three days per month work from Taunton, Contract, Rate: £550/day (Outside IR35) Required Skills & Experience; Strong hands-on experience with C# and modern .NET (.NET Framework/.NET Core/.NET). Good experience developing applications on Microsoft Azure. Experience with Azure PaaS services such as: App Services Azure Functions Storage Accounts Service Bus Azure Key Vault Experience implementing REST APIs and service integrations. Strong understanding of object-oriented design principles and software engineering best practices. Experience with Git-based source control workflows. Familiarity with CI/CD pipelines and automated deployment processes. Experience working with GitHub Copilot or similar AI-assisted development tools. Good understanding of cloud-native application design principles. Ability to troubleshoot and resolve technical issues independently....