151 to 175 of 239 Permanent Senior Systems Engineer Jobs

Obsidian Security is seeking a Senior Backend Engineer to build and evolve backend systems powering its SaaS security platform. You’ll design APIs, implement multithreaded services, and collaborate with product and engineering teams to deliver high-impact features across cloud environments. You will operate ...

Manpower Group (UK) seeks a Senior Software Engineer for our New Malden site. You will contribute to design, implementation and testing of Submarine Command System solutions, while guiding junior engineers and supporting planning, reporting, and estimation activities. Based at a multinational Aerospace & Defence environment, you will ...

Software Engineer for our backend team working remotely (EU/UK based). You will help scale Avakin Life’s backend systems, delivering reliable and secure services for millions of players. The role emphasizes collaboration in an agile environment, ownership of systems, and a strong ...

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 ...

Space in Farnborough is seeking a Sr. Systems Validation Engineer to validate high‐speed SerDes PHYs, lead lab bring‐up and tuning, and develop automated test plans for chip and system level validation. The role involves working with real‐world RF/analog test equipment, performing ...

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 ...

seek a hands-on senior AI engineer embedded in client delivery teams to design, build, and operate multi-agent AI systems on AWS. You'll own end-to-end implementations using Amazon Bedrock, MCP servers, and RAG pipelines, while ensuring observability, scalability, and secure integration ...

Nando's Group in the United Kingdom is seeking a Senior QA Engineer to lead quality across our Point of Sale and Kitchen Management platforms, combining hardware validation with modern testing practices to ensure reliability for millions of customers and Nandocas. You will own test planning ...

European Space Agency (ESA) at ECSAT in Harwell, UK, seeks a Senior 5G/6G NTN System Engineer (SatCom) to advance satellite‐terrestrial networks in a multinational team. You will contribute to 5G/6G architectures, NTN integration, AI‐enabled networking, and industry collaboration on innovative ...

NewDay Technology Limited is looking for a Senior AI Engineer to design and deliver AI systems across the business. This hands-on role aims to build scalable and reliable solutions with LLMs, embedding AI directly into core business processes. You will take high-value problems … turn them into robust, production-ready systems. Requirements include proven experience in developing production-grade AI systems and expertise in generative AI. The position offers 26 days of holiday, private medical insurance, and a double-matched pension. #J-18808-Ljbffr ...

Menlo Ventures is seeking a Senior Software Engineer II in Greater London to lead complex technical projects and simplify systems within our technology stack. With a focus on collaboration and mentorship, this role requires 8+ years of software engineering experience, particularly in Python, Django, React ...

Bank of America in Bromley seeks a Senior Quantitative Engineer to help design and oversee scalable data and analytics capabilities within Global Risk. The role collaborates with modelers, risk managers and technologists to deliver future-state data solutions and robust testing frameworks. You will lead ...

Science, Software Engineering, or a related field. 5+ years of professional experience in backend or fullstack software development. Proven experience delivering production‐grade backend systems at scale. Core Technical Skills Strong proficiency in Python as a primary backend language. Hands‐on experience with FastAPI and Pandas for building data … managing multiple priorities. Passion for writing clean, maintainable, and well‐tested code. Preferred Qualifications Frontend experience using React is a plus. Knowledge of SAP systems and integration patterns is advantageous. Familiarity with LLMs and AI/ML integration patterns is a plus but not mandatory. Experience working in cross ...

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 ...

EcoOnline in Liverpool is seeking a Senior Software Engineer to join our Research & Development team on a full-time 6 month contract, hybrid from Liverpool, focusing on .NET, SQL Server and AWS to evolve our Health & Safety platform. You will help integrate one product with shared ...

A leading electric vehicle manufacturer based in Greater London seeks an experienced Perception Engineer. The role involves developing machine learning algorithms that directly impact safety-critical self-driving features. Candidates should have a strong background ...

Traveltechessentialist is seeking a Senior GTM Engineer in Greater London to spearhead AI-driven outbound strategies and manage GTM system integrations. This role involves designing and maintaining sophisticated Clay workflows while ensuring data quality and operational efficiency. The ideal candidate will have over 6 years ...

Jobtailor in London is seeking a Senior Software Engineer to join our Accounts & Card team. You will lead technical delivery, maintain high-performance standards for card-related products, and drive data-driven decisions across talented colleagues. You love to build new things but also ...

Tommy Hilfiger/Calvin Klein) in Cambridgeshire is seeking a Senior FPGA Engineer to work on high-performance FPGA implementations across radar, communications and sensing domains. You will translate ambitious customer requirements into robust designs, primarily for AMD Xilinx Zynq SoC devices, within a fast-paced ...

BetterCloud is looking for a Senior Design Engineer to help shape the future of its product experience. In this role, you will lead the design of AI-powered workflows, conducting high-fidelity prototype development and collaborating with cross-functional teams to ensure alignment between user needs ...

Indra Group UK & Ireland is seeking a Senior Software Engineer to contribute to safety-critical distributed ATM software. The role involves AI-assisted development and modern tooling to boost productivity and quality across the software lifecycle. Ideal … candidates will have a strong engineering background, 4–6 years in software development, and excellent English. Experience with real-time, safety-critical or distributed systems is valued, and remote-friendly options are available. #J-18808-Ljbffr ...

ICAP Group is looking for a Senior Back-End Engineer in Greater London. In this role, you will design and maintain high … performance, data-intensive applications and APIs, ensuring system reliability while collaborating with architects and stakeholders. The ideal candidate will have substantial experience in trading systems, knowledge of cloud-native architectures, and strong skills in .NET technologies. TP ICAP offers opportunities for innovation within a diverse and inclusive environment. #J ...

Leonardo UK in Southampton is seeking a Chief Project Engineer to join the Comms and Force Protection group, focusing on Naval Systems. You will lead technical solutions across the full lifecycle, coordinating with SMEs and internal stakeholders to deliver performance and capability for diverse naval projects involving ...

Anduril Industries seeks a Senior Product Security engineer to develop novel security tooling, discover vulnerabilities, and secure our AI-enabled and autonomous systems. You will perform architecture reviews, analyze firmware and software, and collaborate with hardware and software teams to harden products across aerospace, defence ...

Salt Digital Recruitment is looking for a Senior Software Engineer to join their London office on a 6-month … contract with a day rate of £400 - £500. The role requires strong experience with Java and cloud platforms, and focuses on designing scalable backend systems and maintaining cloud-native infrastructure. The ideal candidate will have hands-on expertise in distributed systems, Agile methods, and modern engineering practices. This ...