12 software contractor jobs found in London

Job Overview We are currently seeking a .NET Developer for a contractor role based in our UK office. The .NET Developer will be designing, developing, and testing software applications. Additionally, they will maintain existing codebases, troubleshoot issues, and collaborate with cross-functional teams. P92 has been appointed as an External Software Development Partner. The ideal candidate will have a strong technical background, with expertise in modern .Net stack, and possess a systems-thinking approach to understand the entire process comprehensively. The ideal candidate will be an experienced .Net contractor that is able to switch context quickly and hit the ground running. We expect a positive attitude, along with a high level of commitment and responsibility, to be agile and dedicated to high quality work. Education BSc / MSc degree in Computer Science, Information Engineering or a related subject or equivalent experience Experiences Minimum 3-5...

Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP   As a Senior Software Engineer (Java) – Contractor at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required.   Key Responsibilities: Design and develop scalable backend systems using Java and Spring Boot...

Role Overview We are looking for a Senior Delphi Developer with deep expertise in Delphi 10.4 or later , strong understanding of software development life cycle (SDLC) , and hands-on experience in Oracle PL/SQL and RDBMS . The ideal candidate will be responsible for designing, developing, and maintaining enterprise-grade business applications, while also contributing to build automation and deployment processes using tools such as TeamCity and Octopus . This role requires excellent debugging skills, experience in developing custom controls, and collaboration with cross-functional teams to deliver robust and scalable software solutions. Experience: 10–14 years Key Responsibilities Design, develop, and maintain business applications using Delphi 10.4 or newer versions . Participate in the full Software Development Life Cycle (SDLC) — from requirements gathering to deployment and support. Configure and maintain automated build and...

Senior Full Stack Developer - Outside IR35 - Contract - Current SC Essential   We are looking for a senior full-stack developer to join our team, working collaboratively in a fast-paced environment with some ambiguity. This is a senior dev role with a focus on supporting more junior members of the team and sharing that with the existing tech lead. The product is a note-taking and summarisation tool for use in local government, for which the remaining technical work mainly comprises infrastructure, evals, technical improvements, and UCD-driven product features.   Must have:   Experience mentoring junior developers Previously given responsibility for a chunk of delivery Comfortable working in Python and Typescript + React Full-stack developer   Nice to have: previous experience with AWS, Terraform, any UK government projects Slightly nice to have but lower priority: LLM/AI experience and Next.JS  ...

Senior Full Stack Developer - Outside IR35 - Contract - Current SC Essential   We are looking for a senior full-stack developer to join our team, working collaboratively in a fast-paced environment with some ambiguity. This is a senior dev role with a focus on supporting more junior members of the team and sharing that with the existing tech lead. The product is a note-taking and summarisation tool for use in local government, for which the remaining technical work mainly comprises infrastructure, evals, technical improvements, and UCD-driven product features.   Must have:   Experience mentoring junior developers Previously given responsibility for a chunk of delivery Comfortable working in Python and Typescript + React Full-stack developer   Nice to have: previous experience with AWS, Terraform, any UK government projects Slightly nice to have but lower priority: LLM/AI experience and Next.JS  ...

Senior Software Engineer - Outside IR35 - Contract - Current SC Essential   We're hiring a Senior Software Engineer to join a high-impact government programme of work. This is an outside IR35 contract with a strong potential for extension beyond the initial 6-month term, making it a great opportunity for experienced contractors looking for stability and interesting work.   The project sits within a complex, delivery-focused environment where your engineering decisions will genuinely matter. You'll be working as part of a collaborative team building robust, scalable solutions for a public sector client.   Tech Experience: Java, Spring Boot, Typescript and React.   £550 per day outside IR35   Start date: 28/04/2026 End date: 30/10/2026   About Softwire   Softwire is a leading UK technology and strategy consultancy. From enterprise to government, we help visionary organisations turn...

Senior Software Developer / Data Engineer - (Contract Outside IR35)   In brief   We’re looking for well-rounded software developers with experience in data engineering, with a proven ability to tackle complex data challenges, make an excellent impression on clients, and have a high impact on the output of your entire team. We provide a supportive environment with a strong focus on individual career progression, where you will have both the mentorship and project opportunities you need to develop your technical skills. You’ll work in a team alongside other talented developers and data engineers, supported by a Technical Lead. Projects span a range of sizes and multiple sectors and technologies.   The role   Experience and qualifications   You have 4+ years’ experience and a breadth & depth of technical knowledge & expertise, particularly in data engineering, and can solve technical...

Role Overview We are looking for a Senior Delphi Developer with deep expertise in Delphi 10.4 or later , strong understanding of software development life cycle (SDLC) , and hands-on experience in Oracle PL/SQL and RDBMS . The ideal candidate will be responsible for designing, developing, and maintaining enterprise-grade business applications, while also contributing to build automation and deployment processes using tools such as TeamCity and Octopus . This role requires excellent debugging skills, experience in developing custom controls, and collaboration with cross-functional teams to deliver robust and scalable software solutions. Experience: 10–14 years Key Responsibilities Design, develop, and maintain business applications using Delphi 10.4 or newer versions . Participate in the full Software Development Life Cycle (SDLC) — from requirements gathering to deployment and support. Configure and maintain automated build and...

3 months Rolling Contract - Fully Remote £600 per day. Would suit sombody who is Immediately available. Our capital markets practice is looking to help one of our leading global investment banking client deliver a procurement project. We are looking for a capable Category Manager - Software to play a critical role in the delivery of its global Target Operating Model (TOM) for technology procurement. This is a transformation-focused contract supporting the redesign and implementation of new sourcing structures, governance models, and workflows for the management of Tier 1 software vendors (Microsoft, Oracle, SAP, etc.). Key Responsibilities: Support the global rollout of a new TOM for technology sourcing, with specific ownership of the Software category. Act as the primary interface between the programme team and existing category/vendor management teams, helping to align current-state activities with future-state operating models. Contribute to the...

Role: Technical Lead - Fullstack Rate: £500 Duration: 6 months Start Date: Early April Location: London On site requirement: 2dpw in London - City of London Office   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 our regional offices (or 'Clubs') building strong relationships with our partners, so that they are always prioritised by a team within close proximity. This unique model has driven success for our clients and ourselves, evidenced by our remarkable organic growth since 2014. Today we number more than 1,300 people with Clubs all over the UK, Europe and the USA with plans for global expansion in the next couple of years. Join us - and help us fulfil our...

GreySpark Partners is a specialist consultancy that helps capital markets firms transform how they operate, compete and innovate. We combine deep industry expertise with hands-on delivery to solve complex business, technology and regulatory challenges for investment banks, asset and wealth managers, fintechs and other financial institutions, with a strong focus on front-office trading technology and solutions. GreySpark is expanding its Technology talent pool and is seeking experienced Software Developers interested in working on complex, business-critical trading platforms within global investment banks and financial markets clients. This is an opportunity to contribute to the design and optimisation of real-time systems across pricing, risk, connectivity and execution workflows. What You'll Do As a GreySpark technology consultant, you will work closely with front-office and technology teams to deliver both review and delivery projects. Responsibilities include:...

Role Overview We are looking for a Senior Delphi Developer with deep expertise in Delphi 10.4 or later , strong understanding of software development life cycle (SDLC) , and hands-on experience in Oracle PL/SQL and RDBMS . The ideal candidate will be responsible for designing, developing, and maintaining enterprise-grade business applications, while also contributing to build automation and deployment processes using tools such as TeamCity and Octopus . This role requires excellent debugging skills, experience in developing custom controls, and collaboration with cross-functional teams to deliver robust and scalable software solutions. Experience: 10–14 years Key Responsibilities Design, develop, and maintain business applications using Delphi 10.4 or newer versions . Participate in the full Software Development Life Cycle (SDLC) — from requirements gathering to deployment and support. Configure and maintain automated build and deployment pipelines using...