1 to 25 of 173 Software Engineering Jobs in the City of London

Owen Thomas Recruitment Senior/Principal Recruitment Consultant | Software Engineering | Fully Remote or Hybrid London If you’re reading this, chances are you’re not completely satisfied with where you are. Which for us, was enough to want to make a change. At Owen Thomas, we’re breaking … already doing. Managing accounts with strategic thinking and a culture of trust. What We’re Looking For for the Senior/Principal Recruitment Consultant | Software Engineering | Fully Remote or Hybrid London Have at least 36-months Technology recruitment experience A Proven 360 Billings profile – Principal Consultants are expected ...

personalised experiences that are both simple and beautiful. About the Job – Machine Learning Engineer We are looking for a Machine Learning Engineer with strong software engineering fundamentals to join our team of domain experts and researchers. You will be responsible for building robust, scalable ML systems that bring … translate experimental models into reliable, maintainable software. Optimise ML systems for performance, scalability, and cost-efficiency in cloud environments (distributed clusters, GPUs). Establish engineering best practices for ML development, including testing, CI/CD, and code review standards. Progression Timeline Month 1: Onboard to existing ML codebase ...

Head of Engineering £110,000–£130,000 + EMI Options London (mostly onsite) We’re partnering with a purpose-led London fintech scaleup solving real-world financial challenges through smart, accessible technology. With solid backing, strong user traction, and a mission that’s resonating across the UK, this … company on the rise. You’ll join at a pivotal moment, with the chance to influence how technology scales and how the engineering culture is built. The Head of Engineering will own both the technical direction and team development — combining strategic oversight with hands-on impact. ...

Senior Software Engineer 📍 Location: Onsite, London, United Kingdom ⌛ Type: Full-time 💰 Compensation: Negotiable (Competitive salary + equity) About Ontik Ontik is an ambitious, early-stage B2B financial operations platform designed to streamline and simplify complex financial workflows for heavy duty industries. We’re scaling rapidly and looking … high-performance, ownership-driven environment, where you can make a direct impact on the product and help shape its future. Role overview As a Software Engineer (Full-Stack) at Ontik, you’ll play a pivotal role in building and scaling our financial operations platform. This is a hands ...

Product/Backend Software Engineering Position Summary Salary band £100-120k+ (& equity) Hybrid working policy: with three days a week in our Southwark office Experience level: At least five years in commercial software engineering 🚀 About Orchestra Orchestra is an AI-native data pipelining platform building … data teams! Backed by VCs from San Francisco, New York and London with angels from across the data space and beyond. 👷 Engineering at Orchestra We care deeply about our users—their pain points and experience We're a small team of generalists who embrace new challenges regularly ...

Software Engineer – Custom Software (Android) London Office Hybrid working – approx. 20% onsite URGENT contract - Initial 4 months with high likelihood of extension We’re looking for a Software Engineer with strong Android expertise to join a high-impact custom software team delivering solutions for a major … defence client. This role offers the opportunity to work on complex, mission-critical systems using modern engineering practices in a collaborative, agile environment. You’ll be part of a well-established engineering team, contributing to the design, development, and enhancement of bespoke software applications tailored to specific ...

visualisations, and is becoming the operating system for trading teams globally. The role You’ll be the reliability specialist embedded in a product engineering team, owning how distributed systems are designed, run and scaled rather than sitting in a separate ops silo. Expect real‐time data, high‐throughput pipelines … security and resilience. Build and enhance observability stacks for metrics, logging, tracing and alerting, and guide incident response. Mentor engineers in distributed systems, reliability engineering and infrastructure design, acting as a technical reference point. What you bring 7+ years in software engineering, SRE, DevOps or infrastructure roles ...

client journeys and delivering on HL's vision to give people financial freedom. You will work with like-minded people from business, product and engineering functions to develop and refine client journeys covering onboarding, KYC, account management and investment workflows in a secure and compliant environment. By joining … Android using cross platform React Native technology stack. Solid experience & knowledge of React Native is a must-have. Define and uphold mobile engineering standards, best practices, and architectural principles. Lead technical decision-making, balancing short-term delivery needs with long-term maintainability and scalability. Ensure applications are performant, accessible ...

exceptional Machine Learning Engineers . This fast-growing organisation is transforming mission-critical combat planning and operational decision-making by building next-generation AI software tools for Western forces. Founded in 2023, the company has already secured significant early-stage funding, including a $10m Seed round in 2024. … founding team is composed of ex-Palantir and ex-OpenAI leaders. They combine deep sector knowledge with cutting-edge design and software engineering expertise to deliver state-of-the-art SaaS capabilities leveraging NLP, GenAI, Computer Vision, and Reinforcement Learning technologies. Position location (hybrid) : London (Shoreditch) or Paris ...

Senior Software Engineer (Python) 💰 Up to £130,000 + excellent benefits (including work from abroad) 📍 Hybrid - 2 days onsite in Central London (London Bridge) Are you a Senior Python Engineer who loves solving deep technical challenges? Want to help reinvent how future hardware is created? 🚀🔬 Join a top-tier … engineering team building a revolutionary platform that turns high-level hardware requirements into complete circuit designs. You’ll work on complex problems at the crossroads of software, data and engineering, collaborating with experts across multiple disciplines. What You’ll Do Own and evolve backend systems across data ...

Senior Software Engineer (Python - FastAPI) This fast-growing consultancy is pushing the boundaries of AI and data science, helping clients turn complex challenges into scalable, production-ready solutions. They’re now hiring a Senior Software Engineer who can blend deep technical expertise with a practical, delivery-focused mindset. … above What You’ll Be Doing: Leading the end-to-end design and build of applications that utilise advanced AI and data-led software solutions. Developing scalable data pipelines and backend services that support complex modelling work. Setting standards for clean, efficient engineering across Python(FastAPI ...

driven solutions that transform how organisations make decisions. In October 2025, Accenture acquired Decho Group, recognising our unique ability to combine deep engineering expertise with strategic advisory, tackling mission-critical problems in defence, healthcare, and commercial industries. Joining Decho means joining a consultancy where AI meets engineering excellence. … change lives and industries. The Role We’re seeking Senior Consultant Engineers who want to apply their technical mastery in AI consultancy and Palantir engineering while shaping the future of data-driven decision-making. This is a hands-on, client-facing role where you’ll lead technical delivery, partner ...

systems that power one of the UKs leading media groups. Were looking for a hands-on Tech Lead moving into a Head of Engineering role or current Head of Engineering to lead this change from the front, a full-stack technologist who codes with confidence, architects with foresight … inspires teams to deliver with purpose. Youll own the engineering direction across multiple domains; designing scalable cloud-native platforms, embedding DevSecOps excellence, and ensuring our technology foundation accelerates the business. DevSecOps would be desirable to have but so long as you have DevOps that is fine. This ...

Senior Software Engineer - .Net Contract UK, Remote | Contract Inside IR35 | 6 months Start - ASAP Curated is partnering with a highly successful InsurTech that is continuing to scale and modernise its core technology platform. The business operates at significant scale, supports complex, data-driven products, and is investing heavily … engineering capability as part of a long-term transformation programme. They are expanding multiple engineering teams and are looking to bring in experienced contract Software Engineers to support high-impact delivery across a critical platform. This role will suit senior engineers who enjoy working on large, evolving ...

features. You will: Build LLM-powered workflows, chat systems, and assistant-style features. Develop simple, reliable systems that solve real customer problems (no over-engineering). Work closely with product and UX to shape user-facing AI experiences. Deploy LLM models and agentic components in production. You bring: Strong … hands-on experience with GenAI, LLMs, agentic frameworks , or chat/workflow apps. Excellent Python and software engineering fundamentals. Solid cloud experience (AWS preferred, GCP/Azure fine). Product-minded approach and ability to work cross-functionally. 2. Senior AI Engineer - Information Retrieval (Engineering-Focused ...

Intelligence is on a mission to make AI safe and reliable for everyone. To help us achieve this, we're seeking a Full Stack Software Engineer to join our team! We're particularly looking for someone with strong Golang, Typescript and Kubernetes experience . Python skills would also … senior contributor to the development and operation of our cutting-edge cloud-based platform. You should have a passion for both science and engineering, a proven ability to deliver production-ready solutions, and a collaborative spirit to work closely with our product and research teams. Note: the role ...

offices (on average once per week), and were happy to discuss flexibility to make this work for you. We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing … architecture, development, and improvement of software systems. This role involves mentoring junior engineers, collaborating with cross-functional teams, and driving the adoption of best practices in software development. Responsibilities Design, develop, and maintain complex software solutions, ensuring they are robust, secure, tested and scalable. Contribute to software ...

available cloud environments using public cloud platforms Building and maintaining secure, resilient network architectures (virtual networks, routing, firewalls, load balancing) Working closely with product, engineering, and delivery teams to translate business needs into scalable infrastructure Influencing technical direction across dependent engineering teams to improve platform reliability and delivery … Creating automated provisioning and deployment pipelines using Infrastructure as Code Continuously improving platform architecture through modern cloud engineering practices Managing cloud resources efficiently while meeting governance and compliance requirements Supporting and mentoring other engineers to promote high standards of engineering practice Diagnosing and resolving infrastructure and platform issues ...

Senior Software Engineer/Developer (Java AWS Kafka) London/WFH to £140k Are you a Java technologist who enjoys building systems from scratch? You could be progressing your career, in a senior, impactful role at a global, cloud-native, prime broker that is replacing the legacy infrastructure used … mission critical systems in collaboration with Product Managers to understand and define new features and coordinating with other developers with the goal of writing software as one. You'll be empowered to implement the latest tech, seeking continual improvement and can build a team around you, progressing ...

Java Software Engineer/Developer (Full Stack Java) London/WFH to £100k Are you Java technologist? You could be progressing your career in a hands-on, impactful, Software Engineer role, working on a 'tech for good' product that is helping to drive efficiencies … highly complex real-time shift rota application, hosted on AWS and available via the web or mobile device (iOS/Android). As a Software Engineer you will play a crucial role in re-architecting and enhancing the scheduling platform to a Java and Angular codebase (from Ruby ...

About Us: We’re a VC-backed stealth-mode company building behavioural AI solutions for the retail industry. Our platform is designed from the ground up — no legacy, no patchwork systems — just a clean slate ...

products into their existing workflows to drive high adoption and value. Move fast and iterate: Work in an agile environment where experimentation, pragmatic engineering, and rapid iteration are key to creating business value. Leverage modern tools and methods: Use contemporary ML frameworks, cloud platforms, and MLOps best practices … Communicate insights clearly: Distill complex technical findings into concise, actionable narratives for technical and business audiences alike. Keep learning and pushing boundaries: Expand your engineering toolkit across the full ML development lifecycle—from prototyping to deployment—and explore new architectures, tools, and approaches to solving complex, real-world problems. ...

credit infrastructure is underpinned by innovation, cutting-edge technology, and an unwavering commitment to driving client outcomes. Role Overview As a Full Stack Software Engineer , you’ll design, build, and deliver customer-facing features across our greenfield platform. You’ll work end-to-end—crafting TypeScript frontends and robust … role with plenty of opportunity to develop your technical depth , gain exposure to DevOps, cloud, and observability practices, and help define how we build software at Firenze. With no legacy systems , you’ll be shaping our platform from the ground up and growing alongside a team that values mentorship ...

Head of Mobile/Head of Mobile Engineering/Head of Mobile Technology/Mobile Technology Director/Head of Mobile Architecture Overview: Really excited to be sharing this outstanding opportunity, we've partnered with a leading UK FS/FinTech client, trusted by million's of users … help shape and deliver this transformation programme where you will play an absolutely critical role. You will be working closely with the Head of Engineering to shape modern Mobile and Web technology that will transform how people invest and manage their finances. There wont be any line management involved ...

seeking a highly motivated Full Stack Software Engineer (2–5 years’ experience) to join our client’s rapidly scaling engineering team. You will play a key role in building and scaling a proprietary operating system to run and optimise real-world industrial manufacturing operations. This role requires … strong generalist mindset, excellent engineering fundamentals, and comfort working in a high-autonomy environment. There is a slight preference for candidates with strong UX or frontend experience. You will work closely with leadership and on-site teams to turn operational challenges into production-grade software. This is a fully ...