33 software contractor jobs found

Job Title: Software Developer Team Lead Location: London (3 days onsite) Duration: 12 Month Contract Start Date: ASAP IR35: Inside Clearance: Active DV Security Clearance required   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   Role We are seeking an experienced Senior Developer to provide technical leadership for the delivery of an AI-enabled Defence tasking and workflow platform. The role will help shape a secure application that combines Python/FastAPI services, React and TypeScript user interfaces, Camunda workflow...

Job Title: Software Developer Team Lead Location: London (3 days onsite) Duration: 12 Month Contract Start Date: ASAP IR35: Inside Clearance: Active DV Security Clearance required   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   Role We are seeking an experienced Senior Developer to provide technical leadership for the delivery of an AI-enabled Defence tasking and workflow platform. The role will help shape a secure application that combines Python/FastAPI services, React and TypeScript user interfaces, Camunda workflow...

Job Title: Software Developer Team Lead Location: London (3 days onsite) Duration: 12 Month Contract Start Date: ASAP IR35: Inside Clearance: Active DV Security Clearance required   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   Role We are seeking an experienced Senior Developer to provide technical leadership for the delivery of an AI-enabled Defence tasking and workflow platform. The role will help shape a secure application that combines Python/FastAPI services, React and TypeScript user interfaces, Camunda workflow...

Job Title: Software & DevOps Engineer Location: London Hybrid Duration: 12 months Contract Start Date: November, ASAP Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role This role requires a senior software engineer specializing in Java and JavaScript development to design, build, and secure enterprise-level applications and platforms. The consultant will be a key figure in enhancing software supply chain security and driving the adoption of secure development practices across the...

AI Data Scientist (12 Month Day Rate Contractor) Job Introduction Handelsbanken combines a long-established relationship banking model with secure, resilient, and customer-focused technology. Our technology teams enable the Bank's decentralised way of working, delivering systems built for stability, trust, and long-term value. We are on a multi-year technology and digital transformation journey to enhance customer experience and improve how colleagues work together. By modernising platforms, simplifying processes, and better connecting data and systems, we help relationship teams focus on customers and less on complexity. Our decentralised culture extends to technology. Teams are trusted to take ownership, make informed decisions, and deliver sustainable, high-quality solutions. We value engineering excellence, pragmatic problem-solving, and strong collaboration across technology, business, and risk. We offer technologists the opportunity to build lasting careers, deepen...

Job Title: Software & DevOps Engineer Location: London Hybrid Duration: 12 months Contract Start Date: November, ASAP Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role This role requires a senior software engineer specializing in Java and JavaScript development to design, build, and secure enterprise-level applications and platforms. The consultant will be a key figure in enhancing software supply chain security and driving the adoption of secure development practices across the software...

Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role Successful candidate will develop modular Python services across question planning, AI workflow orchestration, information retrieval, evidence processing, LLM integration, response generation and validation. You will work collaboratively with engineering, data, platform and evaluation specialists to translate AI concepts and experiments into reliable, scalable and maintainable production services. This is a hands-on software engineering role requiring strong production Python experience and practical delivery of Generative AI...

Contract - Software & DevOps Engineer Job Type Contract Date published 12-Oct-2026 Req # 25464 Job description Job Title: Software & DevOps Engineer Location: London Hybrid Duration: 12 months Contract Start Date: November, ASAP Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role This role requires a senior software engineer specializing in Java and JavaScript development to design, build, and secure...

Contract - Software Developer In Test- SC Cleared Inside IR35 Contract Initial 6 months London - Hybrid working Start ASAP - Must have active SC Clearance About Scale Factory We are an AI enablement consultancy. Delivering quality-led AI-first foundations, embedding capability and excellence into the foundational fabric of the companies we work with. We give leaders the confidence to move faster, take smarter risks and pursue transformation. Formerly Ten10, we have deep roots in Quality which means we don’t just build for the future, we ensure it actually works. We combine this engineering discipline with cutting-edge AI expertise to deliver robust, scalable foundations that turn ambitious transformation into reliable reality. About the Role This is more than just a job, it’s an opportunity to innovate and grow. As a Software Developer in Test , you’ll: Work with our clients to design, build, and implement...

SC Cleared - Software Developer in Test  Contract - Software Developer In Test- SC Cleared Inside IR35 Contract Initial 6 months London - Hybrid working Start ASAP - Must have active SC Clearance About Scale Factory We are an AI enablement consultancy. Delivering quality-led AI-first foundations, embedding capability and excellence into the foundational fabric of the companies we work with. We give leaders the confidence to move faster, take smarter risks and pursue transformation. Formerly Ten10, we have deep roots in Quality which means we don’t just build for the future, we ensure it actually works. We combine this engineering discipline with cutting-edge AI expertise to deliver robust, scalable foundations that turn ambitious transformation into reliable reality. About the Role This is more than just a job, it’s an opportunity to innovate and grow. As a Software Developer in Test , you’ll: Work...

Full job description Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Fullstack Experience Tech Stack - Kotlin Backend, JS/TS React Frontend Start date ASAP Duration 6 months (Likely to extend) 2/3 days / week in person working (London) Immediate Interviews   The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.   Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.   We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the brilliant...

Role Title: Full-Stack Java Engineer Location: London or Belfast - Hybrid Working Model Rate: Competitive Inside IR35 via Rockford Payroll Duration: 6 months initially Overview Deloitte is seeking six senior full-stack software engineers with strong experience across Java back-end development and JavaScript front-end development to support a confidential engagement within a highly regulated enterprise environment. The role will focus on designing, building, and securing enterprise-grade applications and platforms, with a strong emphasis on DevSecOps, secure software supply chain practices, and embedding Secure Development Lifecycle (SDL) principles across the SDLC. The successful consultants will contribute to the delivery of scalable, cloud-native solutions, support technical strategy and code quality, and help drive secure engineering practices across development and deployment pipelines. Key Responsibilities Design, develop, and maintain enterprise-grade...

Senior TypeScript Engineer (Node.js, AWS Serverless), FinTech Location: London, Manchester, Leeds, Edinburgh or Bristol (flexible hybrid) Rate: £600 per day. Inside IR35 Duration: 6 months About Codurance We're a software craftsmanship consultancy. We build software for clients, and we care about doing it properly: clean code, solid testing, sensible architecture, and teams that keep learning. Our engineers work embedded with client teams, so you get variety, real ownership, and the backing of a wider community of craftspeople who'll challenge you and help you grow. The role We're looking for a senior contract engineer to work on a financial platform where correctness actually matters. You'll design, build, and run TypeScript and Node.js services on AWS serverless infrastructure. You'll work in a small, cross-functional team alongside product, operations, and customer-facing colleagues, and you'll be the person people go to when they're...

Contract Lead .Net Developer - Optimizely Description We are recruiting for a Contract Lead .NET Developer with strong experience in modern .NET/C# architectures and hands-on Optimizely experience, stepping in to spearhead the build of greenfield digital platforms for one of our key enterprise clients. Role Overview Role:  Lead .NET Developer (Associate / Contract) Rate:  £550 – £600 per day Location:  Primarily remote (occasional travel to client sites in London / Watford) Duration:  6-month initial contract (strong potential for extension) Start Date:  ASAP Who We Are: AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We’ve been helping organisations build better digital products and stronger digital teams since 2014.We believe our work should always make a remarkable impact for our clients. We do this through...

Waracle are looking for a Senior QA for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation. We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.   This is a Hybrid role working from our London office 2 days a week and is available on a Contract (Inside IR35) basis, initially for 6 months. Are you a technical quality specialist who thrives on collaboration, engineering rigor, and robust automation? We are looking for a Senior Quality Engineer who combines strong software engineering discipline with deep test automation expertise to deliver...

The first duty of Government is to protect the public. Since 1782, the Home Office has led work to keep the country safe from those who seek to do it harm; in doing so, we make a vital contribution to HM Government’s plan for a stronger, fairer, outward-looking and united Britain.   The Home Office covers three systems Homeland Security, Public Safety and Borders, and Immigration and Citizenship. These systems work collaboratively to deliver our cross-cutting priorities, whilst providing increasingly efficient and secure services for the public. These are difficult areas that can rapidly change in the global environment we work in – this makes us one of the most exciting and stimulating government departments in which to work.   The role: The  Commercial IT Specialist - (Inside IR35)  will join the Home Office’s Software Commercial Category team and take ownership of the end-to-end procurement lifecycle for software solutions....

PLEASE NOTE: SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.   As a Senior Developer you will play a key role in delivering robust and maintainable software that meets user needs. You will contribute across the full software development lifecycle, from design and implementation through to deployment and production support. You will build a deep understanding of the wider service and use that knowledge to solve technical problems, improve system reliability, and help shape practical solutions. Alongside your development work, you will contribute to a strong engineering culture by reviewing code, sharing expertise, and supporting...

Senior TypeScript Engineer (Node.js, AWS Serverless), FinTech Location: London, Manchester, Leeds, Edinburgh or Bristol (flexible hybrid) Rate: £600 per day. Inside IR35 Duration: 6 months About Codurance We're a software craftsmanship consultancy. We build software for clients, and we care about doing it properly: clean code, solid testing, sensible architecture, and teams that keep learning. Our engineers work embedded with client teams, so you get variety, real ownership, and the backing of a wider community of craftspeople who'll challenge you and help you grow. The role We're looking for a senior contract engineer to work on a financial platform where correctness actually matters. You'll design, build, and run TypeScript and Node.js services on AWS serverless infrastructure. You'll work in a small, cross-functional team alongside product, operations, and customer-facing colleagues, and you'll be the person people go to when they're...

Posted 1 hour ago  Contract  Competitive     AI Engineer - 12 Month Day Rate Contract Job Introduction Handelsbanken combines a long-established relationship banking model with secure, resilient, and customer-focused technology. Our technology teams enable the Bank's decentralised way of working, delivering systems built for stability, trust, and long-term value. We are on a multi-year technology and digital transformation journey to enhance customer experience and improve how colleagues work together. By modernising platforms, simplifying processes, and better connecting data and systems, we help relationship teams focus on customers and less on complexity. Our decentralised culture extends to technology. Teams are trusted to take ownership, make informed decisions, and deliver sustainable, high-quality solutions. We value engineering excellence, pragmatic problem-solving, and strong collaboration across technology, business, and...

Role Overview We are looking for a Technical Lead with deep domain expertise across Retail, Logistics, and Warehouse Management System (WMS) integrations. In this role, you will act as the technical authority and primary bridge between business stakeholders and engineering teams. You will own the end-to-end integration architecture, technical design, and systems mapping required to connect enterprise systems (ERP, E-commerce) with 3PL and WMS platforms. What You'll Do Architect WMS & 3PL Integrations, owning end-to-end integration designs connecting enterprise ERP and E-commerce platforms with 3PL and Warehouse Management Systems (WMS). Design robust API and event-driven patterns for inventory sync, order fulfillment, and logistics workflows. Write clear, high-impact Software Design Documents (SDDs), TDDs, BRDs, and interface specs. Guide engineering standards, introduce modern cloud/AI workflow patterns, and present architectural...