101 to 125 of 204 Senior Systems Engineer Jobs in London

Motorway is seeking a Lead GenAI Engineer to set the technical standard for AI work across the GenAI Engineering function. … will build the hardest parts yourself, own the architecture, and guide senior engineers to improve the team's craft. You’ll oversee systems that balance cost, latency and reliability while ensuring safe, scalable AI features for buyers and dealers in our UK marketplace. This is a hands ...

Software Engineer in London, offering a hybrid work model. This role involves designing reliable services and APIs, working across backend systems, and tackling ambiguous problems effectively. The ideal candidate will have strong backend engineering experience, production debugging skills, and a solid understanding of event-driven ...

develop and deliver high‐quality software solutions that improve speed, resilience and efficiency across telecoms services. The role focuses on architecture, APIs, and scalable systems within a dynamic Mobile Software, Data and AI team. The position requires strong Erlang and Python skills, extensive experience in microservices and cloud-native ...

Arcus Search in London is seeking experienced Software Engineers to join a technology-led investment firm building core engineering systems in Rust. This hands-on role focuses on performance, scale and reliability, with ownership from design through to production. You'll work on distributed systems, concurrency and latency ...

days per week onsite Contract: 12 months Rate: Up to £550 per day inside IR35 We are looking for a highly experienced Senior Java … Engineer to join a major financial services organisation, working on highly scalable, mission-critical platforms supporting real-time data processing and distributed systems . Key Responsibilities Design, develop and optimise highly scalable distributed and event-driven systems. Build real-time streaming and data-processing solutions using Apache ...

financial services company in Greater London is seeking a Senior AI Engineer to design and deliver AI systems integral to their business processes. This hands-on role involves building production-grade solutions utilizing LLMs and agentic systems, contributing significantly to the technical direction … architecture. Applicants should have proven experience in delivering AI systems end-to-end and a strong grounding in software engineering principles. The company offers a range of employee perks, including a generous holiday policy and private medical insurance. #J-18808-Ljbffr ...

United States Digital Space LLC in Greater London is seeking a Senior Backend Engineer to lead complex backend systems design and maintenance. You will contribute to high-quality software delivery and mentor junior engineers. The ideal candidate will have over 7 years of experience ...

seeking a senior software engineer to design, build, and operate high-performance data systems for quant researchers and trading teams. You will implement exchange data pipelines in modern C++ and coordinate HPC workflows for large-scale simulations. Strong experience in C++ (>=17) and Python ...

LineTen is building a data-driven last-mile network and is seeking a Senior Software Engineer to craft robust backend services and frontend integrations. … will operate in a low-ceremony, high-trust environment, owning critical components and driving long-term software quality. You will work on distributed systems with a focus on correctness, maintainability, and scalability, using AI-assisted tools responsibly while prioritizing sound design, testing, and thoughtful reviews. #J-18808-Ljbffr ...

Chubb Ltd. is seeking a Senior AI Engineer to lead the design, development, and deployment … generative AI solutions across underwriting, claims, and customer service. You will work at the intersection of software engineering and applied AI, delivering production-grade systems on Azure and Databricks. You will mentor engineers, influence technical direction, and drive AI features that address real insurance business problems. #J-18808-Ljbffr ...

hackajob is partnering directly with Zaizi to hire for this role. Overview We are seeking a high-calibre Systems Engineer to lead the technical delivery of complex programmes within the UK Defence and National Security sector. This role is pivotal in shaping the next generation of mission ...

Kharon, a leader in global security intelligence, seeks a London-based Senior AI Engineer for Agentic Systems. The role focuses on building autonomous agents, integrating diverse data sources, and deploying scalable workflows. You will contribute to research-driven product development and operationalize AI capabilities in production ...

Chubb is seeking a Senior AI Engineer to design, develop and deploy … generative AI solutions across underwriting, claims, and customer service. The role sits at the intersection of software engineering and applied AI, building production-ready systems on our Azure and Databricks platform. You will mentor engineers, shape technical direction, and drive architecture decisions to scale AI capabilities across the insurance ...

seeking a Senior Backend Software Engineer to join the Spacetime UK team. You will contribute to core software, optimize distributed systems, and drive production-ready solutions for aerospace communications. Hybrid remote/in-office arrangements are available for candidates who can work within the UK. … will design and implement scalable systems, lead technical initiatives, and collaborate with senior engineers on challenging projects across land, sea, air, and #J-18808-Ljbffr ...

seeks a Senior Backend Engineer to design and develop scalable backend systems. You will write production-grade code, solve distributed systems challenges, and collaborate with cross-functional teams. The ideal candidate has expertise in Python and frameworks like FastAPI or Node.js, as well ...

Rightmove is seeking a Senior Software Engineer I to own the delivery of high-quality software and products. You will work in a hybrid London-based role, collaborating with cross-functional teams to promote best coding practices and test automation, with a focus on maintainability ...

WeDoTech is seeking a Senior Backend … Engineer in London to join a high-growth AI startup. You will design and implement high-performance Python services, build scalable distributed systems, and own backend architecture from design to production. You'll collaborate with founders, customers and engineers to solve complex problems and shape the platform ...

Codurance is seeking a Senior Software Engineer (Go) for a fast-growing tech company in London to join a core product team. … will own problems from concept through implementation, rollout, and ongoing support in a high-trust, collaborative environment. You will design and build high-throughput systems in AWS, lead end-to-end features, and mentor engineers. This is a 6-month contract, inside IR35, with day rates ...

Octopus Electric Vehicles in London is seeking a Senior Software Engineer (Python) to join our product and engineering team building systems powering our EV leasing platform. You will design and build robust APIs, evolve backend data models, and integrate multiple data sources (PostgreSQL and NoSQL ...

Machine Learning Engineer to build production-grade AI agents and scalable ML-powered services. You will design, implement, and monitor agentic systems that automate complex underwriting decisions, collaborating with data scientists and software engineers in a fast-paced Data & AI unit. The role emphasizes robust architecture ...

pushing the boundaries of how we ingest, model and distribute food-related data across M&S. The team owns the platform that supports supplier systems, price and promotion information, product lifecycle and master data, and critical supply chain data flows. We sit at a unique intersection, providing high-quality … foster an inclusive, high-performing engineering culture. Who You Are Your skills and experience will include: Significant experience building and scaling data-intensive distributed systems, ideally supporting large datasets, high transaction volumes and mission-critical business processes. Strong proficiency in JVM-based technologies, particularly Java, with experience developing scalable ...

seeking a Senior Software Developer to join our Engineering team in London. You'll design and optimize low-latency data processing systems that execute automated trading strategies. A dynamic environment fosters collaboration and innovation, where your contributions significantly impact our success. The ideal candidate will have strong ...

develop, and maintain advanced automation scripts and workflows (PowerShell, Python, or similar) to reduce manual effort and improve service metrics.Infrastructure Collaboration: Partner with network, systems, and security teams to support local IT infrastructure, site onboarding, and operational readiness for new technologies.Field Engineering Excellence: Lead field support operations for your … site, including workstation provisioning, network connectivity, A/V systems, and executive-level support.Process & Documentation: Author and maintain advanced knowledge base articles, support runbooks, and team SOPs that promote global consistency and knowledge sharing.Continuous Improvement: Analyze Service Desk trends, identify service gaps, and propose technical or procedural improvements ...

leading fintech company in Greater London is seeking a Senior Software Engineer specialized in Infrastructure. The role involves deploying and maintaining software, automating deployment processes, and developing observability tools. Candidates should possess 5+ years of experience, a degree in a technical field, and proficiency in Python ...

JPMorgan Chase & Co. is seeking an experienced Senior Python Developer to join our Athena Rates development team working on Risk and PnL frameworks across Rates. You will architect, design, develop, and integrate sophisticated solutions supporting trading desks and back-office functions. You will collaborate with quantitative analysts, traders ...