25 software engineer jobs found in London

?? Senior Software Engineer (Generative AI Platform) - 6-Month Contract - £650/day (Outside IR35) Location: Europe (Remote-first) Rate: £650/day Duration: 6 months (high likelihood of extension) A cutting-edge engineering team is building a next-generation GenAI platform that empowers autonomous software-engineering agents and fully agentic workflows - and they 're looking for exceptional engineers to join them. If you want to work at the forefront of AI , in a space evolving daily, and help define how engineering teams across the world write and ship code in the future ... this is the contract for you. ?? What You 'll Be Working On Designing and developing Go (Golang) services powering a scalable GenAI engineering platform. Building autonomous AI software-engineering agents capable of coding, reasoning, and executing tasks end-to-end. Developing agentic workflows that enable multi-step planning,...

?? Senior Software Engineer (Generative AI Platform) - 6-Month Contract - £650/day (Outside IR35) Location: UK or Europe (Europe preferred - remote-friendly) Rate: £650/day Duration: 6 months (strong extension potential) A high-performance engineering group is building a next-generation Generative AI platform designed to enable autonomous software-engineering agents and fully agentic workflows . This is a rare opportunity to operate at the frontier of AI-for-coding , working with emerging tools and shaping what engineering will look like in the next decade. If you 're excited by LLM-powered development, agentic reasoning, and building new systems in Go - this is your contract. ?? What You 'll Be Working On Engineering Go (Golang) services forming the core of a large-scale GenAI developer platform. Building autonomous AI agents that write, review, debug, and execute code in real time. Developing...

CONTRACT SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW CONTRACT JOB OPPORTUNITY AVAILABLE WITHIN A LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Contract job opportunity for a Senior Software Engineer Globally leading defence / cyber security company £500 - £750 per day (inside and outside IR35 roles available) London based organisation in an easily accessible location Contract Senior Software Engineer To apply please call or email WHO WE ARE? We are recruiting multiple contract Senior Software Engineers to work with various clients in London ranging from R &D companies, Multi-National Consultancies to SME 's and product based companies. Due to the nature of the work these clients do, you must hold enhanced DV Security Clearance. WHAT WILL THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver...

Senior Software Engineer (Generative AI Platform) - 6-Month Contract - £650/day (Outside IR35) Location: Europe (Remote-first) Rate: £650/day Duration: 6 months (high likelihood of extension) A cutting-edge engineering team is building a next-generation GenAI platform that empowers autonomous software-engineering agents and fully agentic workflows - and they're looking for exceptional engineers to join them. If you want to work at the forefront of AI , in a space evolving daily, and help define how engineering teams across the world write and ship code in the future this is the contract for you. What You'll Be Working On Designing and developing Go (Golang) services powering a scalable GenAI engineering platform. Building autonomous AI software-engineering agents capable of coding, reasoning, and executing tasks end-to-end. Developing agentic workflows that enable multi-step planning, orchestration, evaluation, and self-improvement. Working in environments...

Outside IR35 Contract - Senior/Lead Kotlin Engineer – Backend / Distributed Systems - £700-800/day Tier-One Global Investment Bank | London A tier-one global investment bank is expanding a new engineering group responsible for building modern digital financial platforms from the ground up. This team operates with the autonomy and pace of a start-up, backed by the scale and resources of one of the world’s largest financial institutions. Engineers work in small, highly collaborative teams designing and operating systems that power critical financial services used by millions of customers. This is a 6-month rolling contract, on a programme of work estimated to last 2-3 years. We’re looking for experienced Senior and Lead backend engineers who specialise in server-side Kotlin on the JVM , with a strong interest in building reliable distributed systems and scalable cloud platforms. You’ll help design and build high-performance backend services, working closely...

Full Stack Developer (React / TypeScript / Java) Location: London (1–2 days onsite per month) Contract: Outside IR35 Rate: £650–£700 per day Duration: 12 Month Contract Start: Immediate / Short Notice Preferred Eligibility: Active SC Clearance required (DV clearance ideally) Overview An experienced Full Stack Developer is required to build and maintain scalable, high-performance applications within a secure public sector environment. The role requires a 50/50 split across front-end and back-end development . Requirements Strong experience with React and TypeScript Solid Java back-end development experience Experience working in a full stack capacity (approx. 50/50 front-end/back-end) Strong understanding of API integration and system design Active SC Clearance required (DV clearance ideally)

Job Summary: Front Office C# Risk & Valuations Developer (Outside IR35) Role : Senior C# Risk & Valutaions Developer Location : Remote (with occasional travel to London City) Rate : Upto £800 per day IR35 Status : Outside IR35 Duration : 12 months + Responsibilities : Develop and enhance Front Office (FO) risk and P&L functionality in a core risk system. Investigate risk and P&L issues raised by users. Collaborate with the quant group and FO users to gather requirements. Produce user and technical documentation. Ensure system stability and supportability. Essential Skills : Very strong C# development, including very strong multi-threading. Proficiency in SQL Server. Good knowledge of derivatives pricing across asset classes. Understanding of risk management and Greeks. Experience with distributed systems. Strong mathematical background. Familiarity with complex Excel pricing sheets Python and Azure is a plus. Ideal...

ComfyUI Workflow Developer | London | Remote-Friendly | £500 - £600 We're working with a high-end creative agency specializing in hyper-realistic CGI for global luxury brands on this exciting opportunity. We are looking for a technical visionary to bridge the gap between AI experimentation and high-end production pipelines . This role is about more than just generating pretty images; it’s about engineering robust, scalable AI architectures using ComfyUI, Python, and Stable Diffusion to meet the exacting standards of the luxury market. You will move from a high-impact POC sprint into a full-scale production deployment, automating asset generation that rivals traditional CG I. The R ole• Architect and build advanced ComfyUI workflows capable of generating high-resolution, brand-compliant assets at sca le.• Develop custom Python scripts and API integrations to connect AI pipelines with existing Digital Asset Management (DAM) syste ms.• Transition from a 4-week...

Senior C# Developer - Commodities Trading - Outside IR35 Exciting opportunity for an experienced senior developer to build on their experience in Commodities or similar trading development role in this successful Commodities Trading company. £750 - 800 per day Outside IR35 The Senior C# Developer will have significant prior experience as a Senior Software Engineer/Senior Developer working as C# Developer in a Commodities trading environment where they will have gained knowledge of the full trade life cycle and feel comfortable speaking directly to traders and senior stakeholders in the business as well as senior technical colleagues such as architects. Central London location, with Hybrid working expected. Very strong core skills in C# are expected Good knowledge of Commodities Trading is also required. Please apply now if your curious to learn more, for a confidential discussion about the role and company Guidant, Carbon60, Lorien & SRG - The Impellam Group...

C++ Software Engineer (Contract) – £300–£400/day – Outside IR35 You'll be working for a Fintech company as an experienced C++ Software Engineer. Joining the development team on a 9‑month contract (OUTSIDE IR35) . This role focuses entirely on modern C++ engineering within a high‑performance Linux environment. You’ll work across core C++ components, toolsets, and performance‑critical systems, collaborating with senior engineers to enhance and maintain a sophisticated technical product suite. The work is varied, technical, and ideal for someone who enjoys solving low‑level and high‑performance coding challenges. This position does not require prior experience in financial services or trading systems, but if you have it, then great. If not, we are happy for you to learn this on the job. Role Responsibilities Develop modern, production‑grade C++ features and components Work with multi‑threaded, high‑performance systems Contribute to design discussions, code...

C++ Software Engineer – Low‑Latency Trading Contract - OUTSIDE IR35 Rate - Dependent on skills London - Hybrid working 50% in office. You'll be joining a high‑performance trading technology firm. Helping to building ultra‑low‑latency systems powering global electronic markets. Working alongside world‑class engineers solving complex challenges across C++, Linux, networking, and hardware‑accelerated trading pipelines. What You'll Do Build and optimise high‑performance, low‑latency C++ applications Develop real‑time systems interacting directly with global exchanges Work closely with FPGA, network, and infrastructure teams Improve latency, throughput, and reliability across mission‑critical systems Contribute to performance tuning, profiling, and code reviews Skills required Exceptional modern C++ (C++17/20) development experience Strong Linux systems knowledge and debugging skills Experience in low‑latency, multithreaded or high‑performance environments...

Contract Engineering Team Lead – London (Hybrid) - £550/day OUTSIDE IR35 We’re currently partnering with a fast-growing fintech organisation that is transforming the payments landscape across the UK and Europe. They are looking for an experienced Engineering Team Lead to join their team on a contract basis, leading a high-performing engineering squad delivering customer-facing financial technology products. This is an excellent opportunity for a hands-on engineering leader who enjoys combining technical delivery with team leadership in a modern, fast-paced product environment. The Role As Engineering Team Lead, you’ll oversee a cross-functional engineering squad responsible for building and delivering customer-facing applications within a broader embedded finance ecosystem. You’ll help guide ideas from concept through to production, ensuring high engineering standards, predictable delivery, and strong team engagement. You’ll remain technically involved when...

Senior DevOps Engineer – PropTech – AWS, Terraform, Kubernetes, Startup – £500/day (OUTSIDE IR35) A fast-growing PropTech (property tech) firm, backed by industry-leading VCs and investors, is seeking a Senior DevOps Engineer. Operating as an all-in-one platform changing the future of commercial property, this innovative company is looking for a dynamic individual to level up how they build and ship software. The Senior DevOps Engineer's role: This is a high-ownership, contract position where you will be the sole DevOps person, serving as the go-to expert for all things infrastructure. You will own the AWS environment, driving a real push toward security best practices as the company works toward ISO 27001 certification. This isn't just about maintenance; it’s about making things better—creating tighter CI/CD pipelines and cleaner infrastructure-as-code within a collaborative, hybrid environment. Senior DevOps Engineer Key Responsibilities: • Own and improve the...

Machine Learning Engineer - Python/PyTorch - £575-£675/day - Outside IR35 - Remote (UK) Contract: 6 months (extension likely) Day Rate: £575-£675 per day IR35 Status: Outside IR35 Location: Remote (UK) Core Stack: Python, PyTorch/TensorFlow, AWS, Docker, Kubernetes The Opportunity We're working with a growing technology team looking for a Machine Learning Engineer to help design, build and deploy machine learning systems used in real-world applications. This role sits at the intersection of software engineering, data science and applied machine learning, with a focus on taking models from experimentation through to scalable production ML systems. You'll work closely with engineers, data specialists and product teams to develop ML capabilities that support new and existing products. We're also happy to speak with Data Scientists who have strong Python engineering experience and have deployed machine learning models into production environments. What You'll Be...

IT Applications Manager - Central London £650 - £700 p/d (outside IR35) - 3 month initial term Well-established and highly profitable construction engineering business is seeking an experienced IT Applications Manager to join them on a permanent basis. This is a critical leadership role within an organisation undergoing significant digital transformation, with ambitious growth and acquisition plans driving demand for scalable, standardised and efficient business applications. Reporting into the Head of IT, you will lead the delivery, governance and optimisation of business applications across the enterprise. This role blends strategic oversight, hands-on expertise with modern low-code/no-code platforms and direct leadership of a multidisciplinary applications team. The IT Applications Manager will oversee a suite of core enterprise systems, including but not limited to: Workday, UKG (Kronos), COINS, SharePoint, Snowflake, Autodesk Construction Cloud, Pro-Sapien,...

AI Engineer (Contract) – £500/day Outside IR35 📍 Canary Wharf, London (3 days onsite) 🇬🇧 UK-based applicants only We’re looking for experienced AI Engineers who think holistically, automate relentlessly, and know how to turn modern AI capabilities into production-grade, high-impact applications . Our AI organisation is building real-world AI products that deliver business value at speed. This role is ideal for seasoned engineers who combine strong software engineering fundamentals with a pragmatic, hands-on approach to AI tooling and infrastructure. What you’ll be doing Designing, building, and maintaining production-grade AI applications using modern engineering practices (CI/CD, testing, observability, cloud-native design). Developing reusable AI platforms and tools (e.g. conversational bots, AI-powered search, unstructured data processing, GenAI solutions). Working in cross-functional, embedded teams with business stakeholders to rapidly deliver...

IT Applications Manager - Central London (hybrid) £650 - £700 p/d (outside IR35) 3 month initial term, likely to extend Well-established and highly profitable construction engineering business is seeking an experienced IT Applications Manager to join them on a permanent basis. This is a critical leadership role within an organisation undergoing significant digital transformation, with ambitious growth and acquisition plans driving demand for scalable, standardised and efficient business applications. Reporting into the Head of IT, you will lead the delivery, governance and optimisation of business applications across the enterprise. This role blends strategic oversight, hands-on expertise with modern low-code/no-code platforms and direct leadership of a multidisciplinary applications team. The IT Applications Manager will oversee a suite of core enterprise systems, including but not limited to: Workday, UKG (Kronos), COINS, SharePoint, Snowflake, Autodesk...

Yardi Application Support Engineer, £500 per day outside IR35 6 months rolling, London Bench IT require an experienced Application Support Engineer to Support the Yardi application. The successful engineer will be required to work 3 days per week in London and should have the skills and experience included below; Responsibilities Administer enterprise-wide Yardi configurations including user permissions, security groups, custom menus, deployment packages, and system hotfixes Configure bank check formats and coordinate multi-party testing with financial institutions and property management teams Establish new task runners for emerging funds to improve reporting accuracy and operational efficiency Lead end-to-end application integration projects with downstream systems from requirements gathering through production rollout Establish and coordinate disaster recovery testing protocols to validate business continuity capabilities and minimize operational risk...

IT Applications Manager - Central London £650 - £700 p/d (outside IR35) - 3 month initial term Well-established and highly profitable construction engineering business is seeking an experienced IT Applications Manager to join them on a permanent basis. This is a critical leadership role within an organisation undergoing significant digital transformation, with ambitious growth and acquisition plans driving demand for scalable, standardised and efficient business applications. Reporting into the Head of IT, you will lead the delivery, governance and optimisation of business applications across the enterprise. This role blends strategic oversight, hands-on expertise with modern low-code/no-code platforms and direct leadership of a multidisciplinary applications team. The IT Applications Manager will oversee a suite of core enterprise systems, including but not limited to: Workday, UKG (Kronos), COINS, SharePoint, Snowflake, Autodesk Construction Cloud, Pro-Sapien, Primavera P6...

Contract Opportunity - Cisco Network Consultant (CCNP) | Outside IR35 | Remote A Cisco Partner is looking for a CCNP-level Network Consultant to join the team ASAP on a remote contract with very occasional travel to Wiltshire/Oxford. This is an initial 2-month engagement (Outside IR35) with strong potential for extension. The role is ideal for someone who thrives in fast-paced environments and can confidently manage network support and troubleshooting across Cisco enterprise environments. Network Consultant (CCNP) Role Overview: Position: Network Consultant (CCNP Level) Start Date: ASAP Location: Remote with occasional travel to Wiltshire / Oxford Contract Length: Initial 2 months (extension likely) Rate: Depending on experience (Outside IR35) Network Consultant (CCNP) Key Skills & Experience: Cisco CCNP-level networking expertise Hands-on experience with Cisco SD-WAN (Viptela) Experience with Cisco Software-Defined Access...