26 to 50 of 99 Software Engineer Jobs in the City of London

Senior Software Engineer | HealthTech | London (Hybrid) A UK HealthTech company supporting 500+ GP practices and 4.5M patients is hiring a Senior Software Engineer to join their growing engineering team. Their software helps clinical teams identify at-risk patients earlier and manage them more efficiently, used … someone to move on, this is worth a look. What You'll Do Own delivery end-to-end: technical planning, execution, and shipping reliable software Work closely with Product and Design as genuine partners Champion code quality, testing, and pragmatic trade-offs between speed and debt Mentor teammates ...

Senior Software Engineer London or Manchester (1–2 days per week onsite) Up to £115,000 + benefits Permanent We are looking for a Senior Software Engineer to join a leading Microsoft-focused consultancy delivering modern cloud-native solutions across a range of sectors. This … ideal opportunity for a strong engineer who enjoys remaining hands-on while influencing design, mentoring others, and working closely with architects and clients. We're particularly interested in polyglot developers with deep expertise in the Microsoft ecosystem. Strong experience with Azure and .NET/C# is essential, alongside exposure ...

Software Engineer (AI & Full Stack) - Senior Consultant Salary: £60,000 - £70,000 pa + £4,000 Bonus plus benefits, perks and healthcare options Base locations: London, Manchester, Newcastle or Glasgow Job Type: Permanent | Hybrid (2 days per week) | Occasional travel to client site Overview: We're looking … Software Engineer with strong frontend and backend development skills and experience with various GenAI frameworks to join a growing team delivering innovative AI-powered solutions for enterprise clients. This is an opportunity to work at the intersection of modern software engineering and Generative AI, building intelligent applications ...

Senior Software Engineer — AI & Multimodal Data Platforms About the Role We are seeking an experienced Senior Software Engineer to help design and build next-generation AI systems used in Defence, Security, and Resilience environments. You will work on a cutting-edge multimodal data fusion platform that … transforms large-scale information streams into operational decision advantage. This role is ideal for a strong generalist engineer who enjoys working across distributed systems, AI infrastructure, semantic data representation, deployment engineering, and agentic AI architectures. You will take major platform components from concept through production, influence architectural direction ...

Python Software Engineer – High-Frequency Trading We're working with a high-frequency trading (HFT) firm that is looking to expand its technology team with a Python Software Engineer. This is an opportunity to join a trading firm operating at the cutting edge of global markets, where … exchanges. You’ll work on some of the most complex and rewarding engineering challenges in the financial technology space. The Role As a Python Software Engineer, you’ll collaborate with traders, quantitative researchers, and other developers to design, develop, and optimise trading infrastructure. You’ll be directly contributing ...

Senior Software Engineer London/Madrid/Malaga Perm Role | Hybrid (4 Days Onsite) Competitive Salary Harrington Starr has partnered with a leading global fintech organisation to hire a Senior Software Engineer for its high-performing engineering team. This role offers the opportunity to design, build ...

Software Engineer (AI & Full Stack) - Senior Consultant Salary: £60,000 - £70,000 pa + £4,000 Bonus plus benefits, perks and healthcare options Base locations: London, Manchester, Newcastle or Glasgow Job Type: Permanent Hybrid (2 days per week) Occasional travel to client site Overview: We're looking … Software Engineer with strong frontend and backend development skills and experience with v click apply for full job details ...

Title: Embedded Software Engineer Location: London, United Kingdom Company: Chevalier Tech Job Type: Full-Time, Permanent About Chevalier Tech Chevalier Tech is a cutting-edge technology company based in London, focused on developing advanced embedded systems and smart hardware products across the automotive, IoT, and industrial sectors. … deep technical expertise with a relentless drive for innovation to build solutions that power the future. We are seeking an experienced and passionate Embedded Software Engineer to join our dynamic engineering team and help design, develop, and optimise software for our next-generation hardware platforms. Key Responsibilities ...

role of Java Software Engineer involves designing, developing, and maintaining robust Java-based applications. This position is ideal for those with a strong technical background and a passion for delivering high-quality solutions within the business services industry. Client Details The hiring organisation is a well-established … company, they focus on delivering innovative technology solutions to their clients, ensuring efficiency and excellence in every project. Description Develop and maintain Java-based software applications to meet client requirements. Collaborate with cross-functional teams to design and implement efficient technical solutions. Perform code reviews to ensure high-quality ...

Title: Software Engineer Salary Range: £60,000 – £80,000 (Dependent on experience) About Our Client Our client is a well-backed, early-stage HealthTech startup spun out of leading academic and veterinary institutions. They are building a proactive care platform that leverages connected technology, biological data, and clinical … insights to reinvent how companion animals are cared for. By combining hardware and advanced software, their mission is to empower pet parents and veterinary professionals with predictive insights. The Role Our client is looking for a smart, curious, and product-focused Software Engineer to join their core ...

Senior Backend Software Engineer | AI Products Location: London (Hybrid) Defining how AI and finance work together, securely, intelligently, and at scale. We're partnered with a fast-growing AI company building a highly secure Generative AI platform for the financial services sector. By combining LLMs, agentic … leading financial institutions unlock efficiency, improve decision-making and reduce risk. As they continue to scale, they're looking for a Senior Backend Software Engineer to help build and evolve the backend systems that power their AI platform. You'll work on scalable APIs, distributed systems, asynchronous workflows ...

Senior Backend Engineer | Senior Software Engineer | Python | Remote UK 💰 £90,000 - £110,000 🏠 Fully Remote (UK) 💻 Python, Flask, AWS, PostgreSQL, Docker 🚀 High-growth consumer platform scaling rapidly We’re partnered with a high-growth consumer tech platform looking to hire a Senior Backend Engineer into … continuous deployment Consumer product used at significant scale If you’d be interested in hearing more, feel free to reach out directly. Senior Backend Engineer | Python Engineer | Backend Developer | Remote ...

Senior Software Engineer- Data Infrastructure Our client is a technology-driven trading organisation operating in a highly data-intensive environment. They are seeking a Senior Software Engineer to help build and scale the core infrastructure that powers large-scale data ingestion, processing, and distribution across … performance, reliability, and operational efficiency Collaborate with engineers and stakeholders across the organisation Mentor engineers and promote engineering best practices Requirements 7+ years of software engineering experience Strong background in distributed systems and backend development Proficiency in Java, C++, Rust, or another server-side language Experience building and operating ...

Senior Software Engineer – AI Startup – Up to 160k 🚀🧠 💰 Salary: £70,000 - £160,000 + meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 2/3 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering … world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: 🔧 Build and ship high-impact software 🧠 Work on AI/LLM-powered automation tools used in production 🏗️ Help shape scalable systems and infrastructure 🌍 Work collectively across teams to push ...

Intelligence is on a mission to make AI safe and reliable for everyone. To help us achieve this, we're seeking a Front End Software Engineer to join our team! We're particularly looking for someone with strong front end engineering and Typescript experience and with some experience … office in London (Hammersmith). We're excited to have you contribute to our mission! Responsibilities: As a Safe Intelligence Front End Software Engineer, you will: Make key contributions to software development on our TypeScript-based frontend systems, primarily utilizing React to craft intuitive and highly functional ...

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 experience and with some experience of TypeScript and React … week in the in our London office. We're excited to have you contribute to our mission! Responsibilities : As a Safe Intelligence Full Stack Software Engineer, you will: Engineering of Golang-based backend systems , focusing on API development and integration. Contribute significantly to software development ...

Software Engineer (Full-stack + AI) London · Old Street · Onsite (5 days/week) · Skippr AI Direct applicants only (no agencies) Hey, we're Skippr AI 👋 Your new interface is an agent. We build an AI agent, led by voice and vision, that operates software for people … vision, balancing moving fast now with scaling later. This role is for you if You have at least 4 years of experience as software engineer. You're a 0→1 builder who has shipped to production — ideally rapidly shipping apps and building scalable systems in containerised environments. You have ...

Software Engineer IV – AI Research & Machine Learning Location: London, UK (Hybrid – 3 days onsite, King's Cross) Duration: 6-Month Contract (Extension Possible) Start Date: ASAP About the Opportunity We are partnering with a leading global technology organisation that is driving cutting-edge research in Artificial Intelligence … infrastructure for Large Language Models (LLMs). Develop and execute complex experiments involving large AI models and datasets. Collaborate closely with research scientists and software engineers. Translate research ideas into production-quality Python code. Contribute to the development of cutting-edge machine learning technologies. Required Skills & Experience Strong experience ...

Software Engineer | London | GenAI We are partnered with a GenAI platform for enterprise customer experience - one of the fastest growing AI companies in the world. Backed by very large investors and founders from top tier firms across the space. They have built a platform that resolves millions … your work end-to-end - from architecture decisions through to production deployment and iteration What They’re Looking For 2+ years of industry software engineering experience Strong proficiency in Python and TypeScript, including asynchronous programming High comfort level debugging complex system failures across deep technology stacks A mindset ...

Senior Software Engineer 📍 London (5 Days Onsite) 💰 Up to £250k Base + Equity 🌍 Visa Sponsorship Available A venture-backed software company is seeking Senior Software Engineers to join a highly selective engineering team. The business is building AI-powered software used by leading consulting firms … attracted backing from leading investors. Engineers are given significant ownership and the opportunity to contribute across the entire stack. Responsibilities include: • Building AI software that helps professionals perform complex analytical work • Working across the full stack, from Rust services and infrastructure to React interfaces • Developing and refining AI-powered ...

Java Software Engineer Location: London Working Model: Hybrid (2 days in-office) Base salary: £70,000 - £78,000 + Bonus We are seeking a highly skilled Full Stack Java Engineer to join a newly formed product engineering team focused on building AI-enabled workflow and automation solutions. … insurance and BPO sector, with a long-term vision to commercialise these platforms into external B2B offerings. This is an exciting opportunity for an engineer who enjoys building modern, cloud-native applications in a fast-paced, product-driven environment Team Overview The engineering team operates across the UK, India ...

Lead Software Engineer - London (Hybrid) RJC Group is working with a Global energy trading company based in London who require a Lead Software Engineer. They are looking for a hands-on manager with broad technical skills and experience within trading environments to lead a team of .Net … commodities preferred) ETRM/CTRM experience (beneficial) Responsibilities Grow, Lead and Manage high performing engineering team Hands-on development of greenfield application Communicate engineer team goals with engineering staff members Explore and define next technology adoption paths to help build out their stack Drive the hiring and progression ...

Lead Software Engineer (Python) | Up to £110,000–£140,000 | London (Hybrid) High growth FinTech breaking into new markets and are now building out new teams to support this expansion. You will be a hands-on technical leader, owning architecture and delivery while still contributing deeply to backend ...

Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) This is a hybrid role, 3 days remote and 2 days in the office Our client actively encourages diversity, equality and inclusion within its workforce and welcomes applications from a diverse background, REC Solutions ...

Position: Senior Software Engineer Location: London – 2 days onsite Salary: Open to discuss Must have skills: 5+ years’ experience in software development. Strong hands-on technical skills (Python, AWS, DevOps, etc.). Experience with DevOps tools and principles as well as IaaC. Experience in building data pipelines. ...