1 to 25 of 49 Contract Software Engineering Jobs in London

more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. Job title: Senior Software Engineering (Python/C#/.NET, Data & Database Platforms) Location : London (2/3 days per week onsite) Contract: 12 months with possible extension … Rate : £600 - £650 inside IR35 Role Overview We are seeking an experienced Software Engineering professional with strong expertise in Python, C#/.NET, enterprise data platforms, and database technologies. This role combines hands-on technical leadership with ownership of strategic technology initiatives supporting business-critical data and analytics ...

Technical Development Lead AWS/Cloud Engineering Approx £600£750 per day (inside IR35) Initial contract with likelihood of extension throughout 2027 and potentially beyond UK based - flexible hybrid working, we are open to candidates based anywhere within the UK. We are looking for an experienced Technical Development Lead … technology transformation programme within a leading UK financial services organisation. This is a hands-on technical leadership role for someone with deep cloud and software engineering expertise who still enjoys getting into the detail, solving difficult technical problems and exploring how new technologies can be used to build ...

Join a world-renowned aerospace and defence organisation as a Senior Software Engineer onsite in New Malden onsite full time onsite Would you like to join a global aerospace and defence organisation? Do you want to work as part of an organisation protecting people and maintaining maximum national security … drive for greater success, this advanced manufacturing business is currently searching for a Senior Software Engineer to add to their talented, hardworking team in New Malden on a 12 month contract. Striving for innovation and creativity you can ensure no two days will be the same. Senior Software ...

Cheltenham. Role Type: 6 Months Contract and Hybrid role. About the Role We are seeking a Senior Platform & Automation Engineer who combines strong software engineering fundamentals with deep infrastructure-as-code (IaC) expertise. You will own and evolve our core infrastructure, driving automation across our entire technical stack … unified CI/CD pipelines. This role requires a developer background (strong Python) to ensure our infrastructure code and automation workflows adhere to modern software design standards. Key Responsibilities Infrastructure as Code: Design, build, and maintain scalable infrastructure using Terraform and Ansible . Automation & Scripting: Develop custom automation tools ...

observability capabilities to understand model performance, agent behaviour and failure modes. Take end-to-end ownership of technical workstreams, from architecture through deployment. Establish engineering patterns and technical direction for other engineers. Produce clear technical documentation and knowledge transfer to ensure systems can be maintained beyond the engagement. What … Looking For You'll ideally have: 6+ years of professional software engineering experience , with several years working on LLM-based, generative AI or agentic systems. A strong track record operating at Senior, Lead or equivalent engineering level. Commercial experience building multi-agent or agentic AI systems ...

Software Engineering Specialist 6 months Hybrid Inside IR35 - umbrella only We are seeking a Voice Services Developer to build, maintain, and optimize our next-generation communication platforms. You will bridge the gap between traditional telecommunication protocols and modern cloud-based AI. Your core focus will be developing stable ...

will be pivotal in driving the delivery of mission-critical systems built on a cutting-edge technical stack. Working closely with cross-functional engineering teams, product managers, and key stakeholders, you will ensure complex, high-stakes software solutions are delivered predictably, securely, and at pace. Key Responsibilities Technical … Delivery & Agile Leadership: Lead agile delivery across multiple engineering workstreams, driving sprint planning, daily stand-ups, backlog refinement, and retrospectives. Architecture & Engineering Alignment: Partner with senior developers and architects to translate complex requirements into actionable technical roadmaps and deliverable epics. Stakeholder Management: Act as the primary bridge between ...

Inside IR35) 6 Month Contract Remote Working | Occasional Travel to London We're looking for a Principal Developer to join a major engineering programme delivering large-scale, cloud-native systems within AWS. This is a hands-on technical leadership role suited to an experienced engineer who enjoys remaining close … direction across multiple teams. Collaborating with architects, security specialists and senior stakeholders. Acting as a technical authority, supporting complex technical decision-making. Driving engineering standards, quality assurance and best practice. Contributing to architecture, solution design and technical governance. Supporting production services, incident management and live operations. Ensuring solutions ...

months with possible extension Rate : £700 - £750 inside IR35 Overview We are looking for experienced Senior Full Stack Engineers to join a high-performing engineering team building and enhancing modern enterprise applications. This is a hands-on development role for engineers who enjoy working across the full technology stack … applications, cloud-native services, and modern user experiences. The successful candidate will have strong Java and Front End development experience, a passion for software engineering best practices, and experience working within Agile delivery teams. Key Responsibilities Design, develop and maintain scalable enterprise applications. Build modern Front-End applications ...

Onsite in Isleworth 83zero are working with a leading media and broadcasting organisation who are looking for an experienced Data Engineer to join their engineering team on an initial 6-month contract . This is a hands-on engineering role focused on building and supporting cloud-native data … applications, services and scalable data pipelines within Google Cloud Platform . We are looking for someone with a strong software engineering mindset who is comfortable developing production-grade applications, working with large-scale data platforms and automating cloud infrastructure. What You'll Be Doing Designing, developing and maintaining ...

scalable solutions supporting regulatory reporting platforms, ensuring compliance with evolving financial regulations while processing high volumes of transaction data. This role combines hands-on software engineering, data analysis, platform enhancement, and close collaboration with regulatory and business stakeholders. Key Responsibilities Design, develop and maintain enterprise-grade Python applications … through the design of historical replay and data reconstruction capabilities. Drive system enhancements focused on performance, reliability, auditability and operational resilience. Manage and support software releases through the full development lifecycle, including testing, deployment and production support. Collaborate with cross-functional technology teams to deliver regulatory change programmes ...

scalable solutions supporting regulatory reporting platforms, ensuring compliance with evolving financial regulations while processing high volumes of transaction data. This role combines hands-on software engineering, data analysis, platform enhancement, and close collaboration with regulatory and business stakeholders. Key Responsibilities Design, develop and maintain enterprise-grade Python applications … through the design of historical replay and data reconstruction capabilities. Drive system enhancements focused on performance, reliability, auditability and operational resilience. Manage and support software releases through the full development lifecycle, including testing, deployment and production support. Collaborate with cross-functional technology teams to deliver regulatory change programmes ...

scalable solutions supporting regulatory reporting platforms, ensuring compliance with evolving financial regulations while processing high volumes of transaction data. This role combines hands-on software engineering, data analysis, platform enhancement, and close collaboration with regulatory and business stakeholders. Key Responsibilities Design, develop and maintain enterprise-grade Python applications … through the design of historical replay and data reconstruction capabilities. Drive system enhancements focused on performance, reliability, auditability and operational resilience. Manage and support software releases through the full development lifecycle, including testing, deployment and production support. Collaborate with cross-functional technology teams to deliver regulatory change programmes ...

Outside IR35). Working with a global IT Consultancy supporting the client's transition towards delivery models utilising AI agents to streamline systems software + operations: AI Native Systems Engineer is a technical leadership role designing AI-enabled, complex cloud-native + data-intensive systems that support Network Operations … across RAN, data + automation domains. Owning the system engineering discipline, translating business problems into robust technical designs + ensuring AI-assisted delivery remains governed, secure + outcome-focused. Owning complex technical designs from early problem framing through to release + operational support. A 'hands-on' role responsible ...

Embedded Software Engineer We're seeking a talented engineer to join a world-leading navigation and maritime technology organisation, helping to develop the next generation of radar systems used across commercial and defence maritime environments worldwide. This is an exciting opportunity to work at the forefront of embedded software … contributing to innovative radar and navigation solutions that enhance safety, operational effectiveness, and mission success at sea. What You'll Be Doing Developing embedded software for next-generation radar and navigation products Working closely with software and hardware engineering teams to deliver innovative solutions Supporting system integration ...

Embedded Software Engineer We're seeking a talented engineer to join a world-leading navigation and maritime technology organisation, helping to develop the next generation of radar systems used across commercial and defence maritime environments worldwide. This is an exciting opportunity to work at the forefront of embedded software … contributing to innovative radar and navigation solutions that enhance safety, operational effectiveness, and mission success at sea. What You'll Be Doing Developing embedded software for next-generation radar and navigation products Working closely with software and hardware engineering teams to deliver innovative solutions Supporting system integration ...

Java Full Stack Developer Location: Canary Wharf, London Hybrid: 3 days per week in the office Salary: Competitive + Bonus + Benefits Build enterprise software while embracing AI powered development. We're looking for an experienced Java Software Engineer to join a highly collaborative engineering team responsible … delivering large scale enterprise applications within a global financial services organisation. This is an opportunity to work on modern software engineering projects where AI assisted development is actively encouraged. You'll use tools such as GitHub Copilot, Claude or similar technologies alongside modern engineering practices to help ...

rapidly growing technology business developing advanced, high-performance systems for the aerospace and wider defence markets. They are looking for an experienced Embedded Software Engineer to join their engineering team and contribute to the development of embedded software across a range of technically challenging applications. This … opportunity to work across the full embedded software lifecycle, from architecture and interface definition through to implementation, automated testing, integration and release. The Role As an Embedded Software Engineer, you will be responsible for designing, developing and delivering robust, deterministic embedded software across a range of platforms. ...

Models (LLMs), RAG, GitHub Copilot and Agentic AI. You will be building real-world AI applications, intelligent assistants, copilots and automation solutions while helping engineering teams adopt the latest AI development technologies. What You'll Be Doing Design, build and deploy Generative AI and LLM-powered applications Develop … Language Models (LLMs) Generative AI application development GitHub Copilot Claude Code OpenAI GPT/Azure OpenAI Anthropic Claude APIs Agentic AI LangChain LangGraph CrewAI Software Engineering Strong development experience with Python, JavaScript/TypeScript, C# or Java REST APIs and microservices Software architecture and engineering best ...

programme, leading the design and delivery of AI-enabled digital services and platforms. This role will provide technical leadership across multidisciplinary teams, shaping architecture, engineering standards, and AI implementation strategies while supporting the development of scalable, secure, and user-focused solutions. Key Responsibilities Lead the design and delivery … enabled digital products, platforms, and services Provide technical leadership to front-end, back-end, and AI engineering teams Define and implement solution architecture, engineering standards, and best practices Drive the integration of Generative AI, LLMs, and machine learning capabilities into production services Work closely with senior stakeholders, product ...

across core application components and platform capabilities, contributing to systems used directly by front-office teams. What you'll do: Build high-performance, scalable software components using modern engineering practices and contribute to complex technical problem solving. Support the design and implementation of distributed, service-oriented architecture, ensuring … existing systems and contribute to the development of a cohesive sales technology platform aligned with strategic direction. Work closely with sales, product, data, and engineering teams to gather requirements, shape solutions, and ensure successful delivery. The skills you'll need: Strong engineering background delivering complex web applications ...

Cleared Software Developer (Power Platform) - £550/day Inside IR35 - London/Remote - Government We're looking for an experienced SC Cleared Software Developer with strong Power Platform expertise to join a government department. This contract is paying £550 per day (Inside IR35) and will run for around … month on site in London. You'll be working on the development and enhancement of critical digital services, using Microsoft Power Platform alongside broader software engineering principles to deliver scalable, user-focused solutions. What you'll be doing: Translating business requirements into effective technical solutions Designing and building ...

Software Engineer x2 Rate - £750 - £830 Location - London 2/3 days on site Until end of July 2027 About the Role To strengthen our AI for Science (AI4S) team, we are looking for Software Engineers with a track record in developing production-grade, data-driven software … that our AI systems and agentic applications run on, and you will be accountable for keeping them reliable in production. This is hands-on software and platform engineering: building robust, well-tested, high-performance systems that scientists across the client nd on every day, on modern cloud technology ...

propose better patterns, and own the implementation quality of your workstream from first commit through production cutover. This role blends deep Amazon Connect platform engineering, generative AI development on Bedrock and Claude, and full-stack serverless work, with regular direct interaction with customer engineering teams. Responsibilities Your Assignment … quality issues Build conversational experiences where intent-based NLU is the right fit, including multilingual support and SSML-tuned voice interactions Amazon Connect Platform Engineering Build contact flows that integrate AI agents, Lambda-backed business logic, Customer Profiles, and dynamic data-driven routing Implement Amazon Connect Cases and Tasks ...

number of new Senior Python Developer opportunities within a major Financial Services technology environment, supporting significant investment across trading, regulatory and enterprise engineering platforms. These are long-term hires rather than short-term backfill, with multiple teams looking to bring in experienced Python Developers who are comfortable building business … critical applications in a complex banking environment. You'll be working closely with engineering and business stakeholders to design, build and enhance Python applications supporting a mixture of markets, regulatory and front-office technology. Depending on the team, there may also be opportunities to work with AI-assisted development ...