29 senior systems engineer jobs found

🚀 Senior C# Developer – Investment Banking £750/day | Outside IR35 | 12-month rolling contract | Largely Remote I’m working with a leading investment bank looking for a strong Senior C# Developer to join a long-term project building and enhancing a large-scale Structured Notes platform . This is a hands-on engineering role with approximately 80% backend C# / 20% frontend , working on complex, distributed systems. The role: You’ll be working across a modern .NET platform, designing and developing scalable backend services while contributing to the Angular frontend where required. The environment involves large-scale distributed systems, asynchronous processing, multithreading and event-driven architecture. Core technical requirements: • Excellent C# / .NET development experience • Strong .NET 8 knowledge • Previous commercial Event Sourcing experience – essential • Strong understanding of multithreading, concurrency and asynchronous...

A leading company is hiring a AI Platform Engineer (MLOps/GenAI). Hybrid position - 6-month rolling contract, paying up to £1100 per day, Outside IR35 depending on experience. Experience and skills required for the AI Platform Engineer (MLOps/GenAI) Experience building, deploying, and maintaining machine learning and generative AI solutions (e.g., LLMs, embeddings, retrieval patterns, vector search, model fine‑tuning). Strong MLOps knowledge across continuous integration, deployment, monitoring, and evaluation of AI/ML models. Experience with AI infrastructure (orchestration pipelines, GPU compute, model hosting services) and scalable AI data structures (including vector databases/semantic search). Deep software engineering capability in .NET Core/C# and modern back-end engineering, with flexibility to work across languages such as Python, Go, or TypeScript. Strong understanding of distributed systems, microservices, cloud-native patterns, and modern data stores...

A leading business is hiring a Agentic AI Developer. Hybrid position. 12-month rolling contract, paying up to £1000 per day, depending on experience. Experience and skills required for the Agentic AI Engineer, Agentic AI Developer, Python Fluency with modern ML toolchains (PyTorch/JAX, agentic frameworks, MCP). Experience with AI agent ecosystems using frameworks such as LangChain, AutoGen, CrewAI, and Semantic Kernel. Solid software-engineering fundamentals - tested, documented, maintainable Python Familiarity with libraries such as TensorFlow, PyTorch, LangChain, or Ray is a plus. Exposure to Knowledge Graphs (Neo4j / RDF / graph-based enrichment or retrieval). Experience with either Docker, Kubernetes, cloud (AWS / Azure) Experience integrating LLM APIs (OpenAI or similar), with prompt design and orchestration. Hands-on experience training and deploying learned policies for complex behaviours in robots or simulated characters is a bonus Ability to write...

Senior JavaScript Engineer contract - Outside IR35 - £575 per day Leading Ecommerce client is now recruiting a talented Full Stack JavaScript Developer' who is proficient in front and Back End development. (React/Node.js), with an emphasis on Back End Node work initially. This role will be joining their platform team, designing, and building the foundations of which our clients innovative web and mobile applications run on. What will a day in the role entail? Working as an integral part of an agile team contributing towards the planning and development of systems/platforms. Collaborating with engineers, product owners and business analysts to define solutions, ways of working and share knowledge across the department. Reviewing code and providing support to members of your team. Working on client-facing applications in react/next.js Designing and building Node.js/GraphQL APIs. The ideal Senior JavaScript Engineer Senior level experience in modern...

We are looking for a Senior AI Engineer-Machine Learning- Computer Vision for one of our clients based in London. Location - London, UK, REMOTE role and Outside of IR35 You'll be helping in building and scaling AI-driven solutions that deliver images and videos to millions of customers. This role focuses on designing reliable, responsible and high-performing AI systems, using deep learning embedding techniques for multimodal signal processing, and generative AI technologies such as large language models (LLMs). You'll work closely with Studios, Machine Learning Engineers and Product teams to shape the next generation of AI-powered automation. By applying Computer Vision to product imagery and external visual inspiration, you'll uncover rich styling signals and combine them with customer insights to create smarter image generation, more engaging shopping journeys and more personalised fashion experiences. Key Responsibilities Design and develop AI solutions...

I’m helping an established insurance broker find Digital Product Lead to join them on a permanent or an contract basis.   The organisation have a big drive to create a digital workbench to cover their PAS and CRM systems and provide mobile access and a better customer experience.   The role will involve leading the front and back end front end development of these products as well as managing a team of 3 and working closely with the key business stakeholders to ensure this is correctly implemented. The role will still be 80% hands on with the engineering and 20% management.   They are seeking someone with a background either as a Digital Product or as a Lead / Senior Product Engineer that wants to step up into the role. Ideally they are seeking someone with Insurance / InsurTech experience and who has full stack experience across front and back end development.   The role is ideally a permanent role and they would look at a...

We are looking for a Senior AI Engineer-Machine Learning for one of our clients based in London. Location - London,UK, REMOTE role and Outside of IR35 You'll be helping in building and scaling AI-driven solutions that deliver images and videos to millions of customers. This role focuses on designing reliable, responsible and high-performing AI systems, using deep learning embedding techniques for multimodal signal processing, and generative AI technologies such as large language models (LLMs). You'll work closely with Studios, Machine Learning Engineers and Product teams to shape the next generation of AI-powered automation. By applying computer vision to product imagery and external visual inspiration, you'll uncover rich styling signals and combine them with customer insights to create smarter image generation, more engaging shopping journeys and more personalised fashion experiences. Key Responsibilities Design and develop AI solutions using LLMs and...

We are looking for a Senior Machine Learning Engineer for one of our clients based in London. Location - London (preferred)/Anywhere in UK, REMOTE role and Outside of IR35 Job Description Design, develop, and deploy scalable machine learning systems that power demand forecasting and related AI products. Design and maintain reliable ML workflows across the model life cycle, including data preparation, experimentation, training, evaluation, deployment, inference, monitoring, and continuous improvement. Build and optimise large-scale data processing and feature engineering pipelines using technologies such as PySpark and Databricks , enabling efficient preparation of training and inference datasets. Develop multimodal machine learning solutions that combine diverse data sources, including product images, text, structured metadata, and behavioural signals , to create rich representations for downstream AI applications. Train and production-ise deep...

Senior Product Engineer - Python/React | £650/day Outside IR35 Up to £650/day | Outside IR35 | 6 months | Shoreditch, London I'm working with an exciting early-stage HealthTech business that is building a highly ambitious consumer healthcare product from the ground up. They have an exceptionally experienced founding team with a strong track record of building, scaling and exiting successful technology businesses , and are now growing the engineering team at a key stage of the company's journey. They're looking for an experienced Product Engineer who wants genuine ownership - working closely with the founders and engineering team to take problems from initial idea through to production and customer feedback. This isn't a ticket-driven engineering role. They need someone who enjoys building, shipping and making product decisions . Key experience: Excellent Python engineering skills Async systems/data processing React and comfortable working across the full stack...

Senior Product Engineer – Python / React | £650/day Outside IR35   Up to £650/day | Outside IR35 | 6 Months | Shoreditch, London   I’m working with an exciting early-stage HealthTech business that is building a highly ambitious consumer healthcare product from the ground up.   They have an exceptionally experienced founding team with a strong track record of building, scaling and exiting successful technology businesses , and are now growing the engineering team at a key stage of the company's journey.   They’re looking for an experienced Product Engineer who wants genuine ownership - working closely with the founders and engineering team to take problems from initial idea through to production and customer feedback.   This isn't a ticket-driven engineering role. They need someone who enjoys building, shipping and making product decisions .   Key experience: Excellent...

🚨 Senior Product Engineer | HealthTech | Outside IR35 | £550-600/day Few&Far are partnered with one of the most ambitious early-stage HealthTech businesses I’ve come across, and they’re adding another engineer to the team. This is additional headcount, taking the engineering team to 7. They only want the best of the best!! They’re building a category-leading consumer healthcare product designed to help people understand their health, prevent illness and ultimately live healthier for longer. The platform brings together: 🩺 Blood testing & health data 👨 ⚕️ Dedicated doctors, PTs, nutritionists & specialists 🤖 AI-driven health insights 💬 Messaging & care team access 🏋️ Workouts & nutrition tracking 🏥 NHS record integration 📱 Consumer-facing React Native applications What are they looking for? 🐍 Excellent Python engineering skills, Python is at the core of the stack 🚀 Zero-to-one experience, someone who has built new...

Senior C# Engineer – .NET 9/10, AWS Lambda, SQS, SNS – OUTSIDE IR35 £700–£800 per day • Outside IR35 ? 100% Remote • 11 month rolling contract Takeaway: Contribute to the architecture and build of a major greenfield B2B SaaS platform as a deeply senior, hands-on C# engineer, with heavy emphasis on deep .NET engineering , high-performance distributed systems , and real-world AWS serverless delivery . You’ll also have the opportunity to develop hands-on skills with Claude Code , one of the most advanced AI-assisted development tools in the industry. Role Overview: You’ll operate as the technical spearhead for a greenfield product build, reporting to the Director of Engineering. Expect deep backend engineering, distributed system design, and high-quality serverless delivery, plus the chance to adopt modern AI-assisted development practices as part of your workflow. What You’ll Bring: Senior/Staff-level backend mastery in C# and .NET 9/10 , with...

Senior C# / Azure Engineer – £600/day Outside IR35 Contract: Initial contract Rate: Up to £600 per day IR35: Outside IR35 Location: UK – Hybrid Office: 1–2 days per week Start: ASAP / immediately available strongly preferred We are currently recruiting for a Senior C# / Azure Engineer to join an established engineering team of approximately 40 people. This is a hands-on engineering role for someone with strong experience building cloud-based, distributed and event-driven systems using C#, Azure and modern integration technologies. Key Skills Strong commercial experience with C# / .NET Strong Microsoft Azure experience Apache Kafka / event streaming REST APIs and service integration Event-driven architecture Distributed systems Scalable backend services Angular / frontend experience is a nice-to-have The Role You will work as part of a collaborative engineering team, developing and integrating modern cloud-based services...

Technical Business Analyst/Technical Product Owner: Adobe Experience Platform & Enterprise Data Alignment Client is building out its customer data and personalisation capability on Adobe Experience Platform. They need a Technical BA/Product Owner who can take business requirements from marketing and digital teams, translate them into precise XDM specifications, and make sure what lives in Adobe stays aligned with the central enterprise data platform. In practice, this role owns the parity between the two. You will understand the business ask, define the schema and data dictionary in Adobe, and specify what the enterprise data team needs to deliver so both sides describe and supply customer data consistently. The strongest candidates will bring genuine depth in data analysis and data modelling. Hands-on Adobe tooling experience is strongly preferred, although exceptional data specialists with a clear ability to get up to speed on the Adobe stack quickly will be...

Technical Business Analyst/TPO - Adobe (CDP/XDM schemas) Technical Business Analyst/Technical Product Owner: Adobe Experience Platform & Enterprise Data Alignment Client is building out its customer data and personalisation capability on Adobe Experience Platform. They need a Technical BA/Product Owner who can take business requirements from marketing and digital teams, translate them into precise XDM specifications, and make sure what lives in Adobe stays aligned with the central enterprise data platform. In practice, this role owns the parity between the two. You will understand the business ask, define the schema and data dictionary in Adobe, and specify what the enterprise data team needs to deliver so both sides describe and supply customer data consistently. The strongest candidates will bring genuine depth in data analysis and data modelling. Hands-on Adobe tooling experience is strongly preferred, although exceptional data specialists with a clear ability to...

Product Managers required by a not-for-profit organisation in central London with hybrid working (four days per week remote), where you can join a growing and evolving product team, solving real needs for real people. Assignment - Product Manager Location - Central London with hybrid working (four days per week remote) Skills - Product Manager, Product Owner, Consumer Apps or Field Service Management, Agile, Commercial Awareness, Vendor Management Duration - Six months with possible extensions Rate - £450 to £500 + VAT per day (outside IR35) To qualify the Product Owner will have demonstrable experience within product ownership and/or product management, a good understanding of Agile, have strong commercial awareness (ie the ability to link product decisions to business value, cost optimisation and ROI) and good communication (both verbal and written), relationship building, stakeholder management and vendor management competencies. In addition, the Product Owners...

Data Engineer | Capital Markets | London/Hybrid | 12 month contract Location: London (Flexible Hybrid model) circa 1-2 day p/w in office IR35: Outside A leading, global financial services firm is seeking an experienced Data Engineer to join their expanding Capital Markets technology team. This is an opportunity to work on a large-scale data transformation programme, developing robust data platforms that services a range of key areas including Front Office trading, risk, regulatory reporting, and market data analytics. Working alongside stakeholders across Trading, Risk, Quantitative Research and Technology, you will design and build scalable data solutions that enable critical business decisions across global markets. Key Responsibilities Design, develop and optimise enterprise-scale data pipelines and platforms Build and maintain data solutions supporting capital markets and a global trading functions Develop cloud-native data engineering solutions using modern...

Embedded Software Engineer – IoT location: Kinsgton Upon Thames Rate: £60pphr + VAT, outside IR35 Onsite: 2-3 days per week onsite. Duration: 15 months   Role Overview We are looking for an Embedded Software Engineer to develop firmware for connected IoT products, working closely with electronics, hardware, cloud and product engineering teams.   Key Responsibilities Design, develop and maintain embedded firmware for IoT devices. Develop robust, efficient software primarily in C/C++. Work with microcontrollers, sensors, peripherals and communication interfaces. Develop and integrate drivers using SPI, I²C, UART, GPIO, ADC and PWM. Develop applications using RTOS or bare-metal architectures. Develop power-management strategies for battery-powered devices. Implement secure boot, device security and OTA firmware updates where required.   Technical Skills Essential: Strong embedded...

Data Architect £570 per day Outside IR35 Central London Live SC & NPPV3 Required Data Architect £570 per day Outside IR35 Hybrid - 3 days per week onsite in Central London We're looking for an experienced Data Architect to join a high-profile programme delivering enterprise-scale data solutions within a secure government environment. This is an excellent opportunity for a senior contractor who enjoys solving complex data challenges, working across multiple systems and stakeholders, and designing robust end-to-end data architectures that support critical business services. The Role You'll play a key role in defining and delivering data architecture across a complex technology landscape, ensuring data flows efficiently and securely from source through to consumption. Working alongside architects, technical teams and business stakeholders, you'll design scalable, resilient data solutions that support strategic transformation programmes. What You'll Be...

Learner Analytics Product Manager Remote | Outside IR35 | 3-6 Month Contract We are seeking an experienced Learner Analytics Product Manager to support the development and enhancement of a learner analytics capability for a leading higher education organisation. This is an exciting opportunity to shape how learner data is used to improve student outcomes, retention, engagement, and institutional decision-making. You will work closely with academic stakeholders, data teams, technology partners, and senior leadership to define and deliver a product roadmap that maximises the value of learner analytics across the organisation. Key Responsibilities Define and own the learner analytics product vision, strategy, and roadmap. Engage with stakeholders across academic, student services, planning, and IT teams to gather requirements and prioritise initiatives. Translate business needs into detailed product requirements and user stories. Drive the development and adoption of learner...