226 to 250 of 298 Senior Systems Engineer Jobs in the UK

will work closely with senior engineers and cross-functional teams to drive improvements, implement best practices, and ensure the reliability of the systems powering our global payment network. Key Responsibilities: AWS Infrastructure Engineering: Design, build, and maintain AWS services at scale, including … Cloud. Automate deployment workflows, testing, and release processes to improve delivery speed and reliability. Monitoring, Observability & Reliability: Build and enhance monitoring, logging, and alerting systems using CloudWatch, Datadog, and other observability platforms. Contribute to SRE-style initiatives to improve system resilience, scalability, and fault tolerance. Security & ComplianceImplement and enforce ...

computing, networking, sensing, and security. IonQ’s newest generation of quantum computers, the IonQ Tempo, is the latest in a line of cutting-edge systems that have been helping customers and partners including Amazon Web Services, and AstraZeneca achieve 20x performance results and accelerate innovation in drug discovery, materials … Orchestration team in System Software at Oxford Ionics. In this role, you will be responsible for building and operating the software that keeps our systems calibrated, decides what they do next and keeps the record of what they did, contributing to the team's mission of keeping our quantum ...

global leader in public transit solutions is looking for a Senior Software Engineer in Manchester to drive innovation in public transportation technology. The successful candidate will have at least 5 years of experience in software development, specializing in C++ and Java, along with cloud platform expertise. ...

Hunter Bond is seeking a Senior Software Engineer (Rust) for a hybrid UK-based role focused on delivering high‐performance, low‐latency systems. You will work with a handpicked team to design safe, memory‐safe Rust software, optimize critical paths, and scale platforms that demand extreme … reliability. This role suits senior engineers who thrive in flat structures, value technical excellence, and want influence over the roadmap. #J-18808-Ljbffr ...

Data Intellect Limited is seeking a Senior kdb+ Engineer to lead technical deliveries for financial institutions. You will design robust kdb+ architectures and collaborate with quants, traders, and analysts to create efficient solutions. The ideal candidate will have over 5 years of kdb+ development experience, strong ...

Data Intellect Limited is seeking a Senior kdb+ Engineer to lead technical delivery on client projects and design scalable architectures for time-series data. Your role will involve mentoring junior developers and driving innovation in kdb+ techniques. Ideal candidates have over 5 years of kdb+ development ...

Expleo is seeking a Senior Software Engineer to support the development and deployment of advanced test & simulation systems in secure environments. The role spans the full software lifecycle and requires leadership for complex investigations, design changes and verification activities. The position is site-based ...

computing, networking, sensing, and security. IonQ’s newest generation of quantum computers, the IonQ Tempo, is the latest in a line of cutting‐edge systems that have been helping customers and partners including Amazon Web Services, (https://cts.businesswire.com/ct/CT id=smartlink&url=https … Orchestration team in System Software at Oxford Ionics. In this role, you will be responsible for building and operating the software that keeps our systems calibrated, decides what they do next and keeps the record of what they did, contributing to the team's mission of keeping our quantum ...

Kodamai Ltd is looking for a Senior Software Engineer to bridge advanced AI research with production software engineering. You will work alongside a talented mathematical science team, ensuring software reliability and developer experience. The ideal candidate possesses experience in Julia and additional languages, a background ...

Spotify is seeking a Senior Backend Data Engineer to design and scale backend and data systems powering content understanding across the platform. You will own projects end-to-end from design to operation, collaborating with engineers, data scientists, and product teams. Based in London ...

Letit is seeking a Senior Full Stack Engineer to work across various product surfaces, including React front … NestJS backend. While this position is primarily remote, candidates from the EU and UK are preferred. The role focuses on building reliable AI systems, enhancing user experience, and solving new challenges. As a full-time contractor, you will contribute to modern development practices, ensuring a reliable execution system ...

z2bz0 years of experience Outstanding C programming and debugging skills; ability to write clear, reliable, and maintainable code. Solid foundations in data structures, operating systems, computer architecture, and software engineering practices. Methodical and analytical approach, learn complex systems, and work effectively with distributed cross-functional teams. Clear written … capability to make sound tactical choices. Ways to stand out from the crowd: Internships, research or professional experience in Linux/QNX embedded systems, SoCs based on ARM technology, platform security, working with device and driver connectivity. Python experience, particularly for test automation, tooling, analysis, or developer efficiency. Interest ...

Wallstreetdocs Ltd. is seeking a Senior Software Engineer-Platform Services to drive our core platform ecosystem. In this role, you will own and operate platform services, including customer and developer portals and centralized document management, while leading architectural decisions across a dual-stack of Node.js/ ...

Provn Talent Solutions Ltd is recruiting a Senior Rust Software Engineer for a leading global financial-markets firm. You will join the Core Trading Engineering team to design and build high-performance Rust applications and distributed services in Linux environments. You will collaborate with quantitative teams ...

Citigroup Inc. in London seeks a Senior AI Engineer to design and build agentic AI solutions for Funds Transfer Pricing and Financial Hedging. You will lead multi-agent system design and production-grade deployments at global scale. You will integrate LLMs, planning, and retrieval augmented generation ...

Software Engineer to join the System Orchestration team in System Software. You will build and operate the software that calibrates quantum systems, schedules programs and manages hardware access across the fleet. This hands-on role emphasizes stateful services, concurrency, and reliability, with collaboration across runtime, systems ...

Optiver is seeking a Senior Digital Assets Software Engineer in London to design and implement trading systems for cryptocurrency markets. You will work closely with traders and researchers to translate market insights into robust production solutions. Join a fast-moving environment where you’ll build ...

United Kingdom is seeking a highly experienced Software Engineer to lead the design, development, and delivery of mission-critical financial systems on a modern Microsoft Azure and SQL Server stack. You will partner with business stakeholders and cross-functional teams to translate complex financial requirements into scalable ...

sees.ai, a London-based developer of autonomous inspection tech, seeks a Senior C++ Software Engineer to evolve a real-world platform for unmanned systems. You’ll contribute across the core software stack, from flight control and autonomy to simulation and operator interfaces, with a fast feedback ...

Leonardo UK Ltd. is seeking software engineers to develop features for the GCAP Integrated Communications System (ICS) at the Southampton site. You will contribute to Linux-based applications and TCP/IP networking within a ...

Millennium Management LLC in London seeks a Senior Quantitative Engineer to help implement and advance core software and infrastructure for alpha research … feature engineering, portfolio construction, and trade execution. The ideal candidate has a strong CS/engineering background with 5+ years and expertise in distributed systems, real-time event-driven architectures, and large-scale time series processing, using Python/C++. The team offers a collaborative London environment. #J ...

Atos SE is seeking a Senior Full Stack Engineer to design and deliver complex software across multiple tech stacks. You will collaborate with clients and internal stakeholders, guiding hands-on development while shaping architecture and delivery. The role sits within our Gen AI practice, contributing ...

Staff Software Engineer to tackle high-level technical challenges and enhance system scalability. You will resolve technical issues, design distributed systems, and leverage AI tools to improve workflows. Ideal candidates should have experience with production systems at scale, debugging skills, and the ability to work ...

Leonardo UK Southampton site is seeking a C++ Principal Software Engineer to contribute to the GCAP Integrated Communications System. The role blends on-site work with flexible home-based arrangements, and requires a strong background in C++, Linux, and embedded software for high-integrity defence projects. You will ...

Tesco Technology is seeking a Senior iOS Engineer to advance the Digital Design System (DDS) for iOS. You will build reusable UI foundations, ensure accessibility, and maintain robust component APIs used across Tesco's digital ecosystem. Collaborate with design, product engineering, and DDS teams to keep ...