1 to 25 of 64 Software Engineer Jobs in the City of London

Senior Product Engineer | Senior Software Engineer | Full Stack Engineer | Senior Software Engineer 🌍 Climate Tech Startup Scaling Real-World Carbon Removal 💰 Up to £95,000 + Equity 💻 C#, React, Python, Azure 📍 Hybrid/Flexible | London Waterloo We’re partnered with one of the most interesting … climate tech startups in the UK right now, a company building software and infrastructure to help scale large-scale carbon removal and sustainability initiatives globally. The business is entering a major growth phase and is building out a high-calibre engineering team to support that growth. They’re hiring ...

Senior Software Engineer | Media/Subscription | Headless CMS/Paywall Role: Senior Software Engineer Salary: £80,000 plus £10,000 bonus Remote working: 2 days in London office I am working with a B2B Start Up who are looking to hire a Senior Software Engineer … leadership team, you will report directly to the CEO, ensuring their technology stack is a driver of their commercial success. Key Responsibilities for Senior Software Engineer Technical Leadership: Own and maintain their core stack, including headless CMS (WordPress + DatoCMS), infrastructure (AWS/Heroku), and billing systems (Stripe ...

Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) ***This is a hybrid role, 2 days remote and 3 days in the office*** Our client actively encourages diversity, equality and inclusion within its workforce and welcomes applications from a diverse background, REC Solutions … Limited does not discriminate in regards to age, gender, national origin, religion or any other basis. An excellent opportunity has arisen for a Senior Software Engineer C++to join a friendly team my client are a well-established exchange (FinTech, Financial Technology) based in the City. My client ...

Senior Software Engineer/Principal Software Engineer- C++, Python - Financial/Banking. Candidates will have a minimum 8+ years C++ experience and excellent knowledge of Python -coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange Connectivity. … work with the Product, Infrastructure and QA teams, to produce high performance, low latency and highly reliable code. Your goal will be to develop software which handle large amount of TPS to drive a highly efficient technology used by several markets around the world. To be successful in this ...

Senior Software Engineer £75,000 – £85,000 + Bonus & Benefits Hybrid | Central London (1 day per week) We're working with a scaling, mission-driven consumer app business to find a Senior Software Engineer to join a small, high-ownership engineering team. They're backed … consumer app used by hundreds of thousands of customers globally, and the engineering team deploys multiple times a day. As a Senior Software Engineer, you'll work comfortably across both backend and frontend, with a natural lean towards backend design and architecture. The team values pragmatism over perfection ...

this is wrong and we are on a mission to fix it, triggering the future of hardware design. We are creating an entirely new software engine for circuit boards, that takes as inputs the requirements of a circuit board and automatically outputs a complete design, ready for manufacture. … Lead Software Engineer, you’ll create simple and elegant solutions to difficult technical problems that the world has not solved before. You will work in close collaboration with a highly-functioning team of software, electronics, algorithm engineers and product managers. Responsibilities Collaborate with the product team ...

Software Engineer - Up to £160,000 - London Title : Software Engineer Company : AI Startup Location : London Pay : Up to £160,000 Additional : Very strong stock options Company : A recently funded AI start up, spun out from an elite academic institution are looking to grow their software … features with direct impact on customer value Work with product and ML teams to help translate abstract and complex concepts into concrete software Own key architectural decisions Continually make incremental improvements to their systems Help the team scale by mentoring junior team members Play a significant role ...

Title: Senior Embedded Software Engineer Rank: Determined by the confirmed level and scope of experience Company: Chevalier Tech Limited Location: Colindale, Greater London (On-site) Job Type: Full-time, Permanent About Us Chevalier Tech Limited is a tier-one supplier specialising in advanced technology systems, primarily … Smart Door Handles, and Control Electronics, which are integrated into high-end passenger and super cars worldwide. About the Role As a highly Experienced Software Engineer , you will lead the software engineering team, play a pivotal role in the design, development, and implementation of embedded software ...

Lead Software Engineer : £750 Inside IR35 : Hybrid London (3x per week) : Banking client A major UK bank is seeking Lead Software Engineers to support on a major transformation project to rebuild the payment system, replacing their existing enterprise solution. The new product will support a broad range … Apply now or reach out directly to find out more. Due to the high volume of applications, not all applicants will receive feedback. Lead Software Engineer : £750 Inside IR35 : Hybrid London (3x per week) : Banking client ...

Senior Software Engineer Are you a developer who loves building products, not just features? Do you thrive at the intersection of robust backend logic, intuitive frontend interfaces, and conversational AI? Are you excited to join a fast-growing, seed-funded startup transforming construction procurement? If you want … small, ambitious team of 10 that moves fast, trusts each other, and enjoys building genuinely impactful technology. Your Role As a Senior Software Engineer you won’t just be ticket-crunching. You will own the end-to-end experience of our platform. You’ll be responsible for architecting ...

Full Stack Software Engineer (Data-Focused) Location: London - Hybrid - 1-2 days per week Salary: (Apply online only)k + Bonus Type: Permanent Sponsorship: Not Available Role Overview: We are seeking a Senior or Staff-Level Fullstack Software Engineer with a strong background in data … moving legacy products to a new technology stack Support documentation, testing, and ongoing maintenance of production systems Required Qualifications: 7+ years of experience in software engineering roles, with a track record of building solutions end-to-end Experience deploying applications in cloud environments, preferably Microsoft Azure Strong experience ...

Principal Scientific Software Engineer – Quantum Error Correction Location: Major US Tech Hub (Relocation Supported) Ready to help build the future of computing? Curious about shaping technology that could redefine science itself? Looking for a role where your work doesn’t just scale systems—but changes what’s possible … forefront of next-generation computing, working on breakthroughs that could transform industries from pharmaceuticals to climate modelling. They are now seeking a Principal Scientific Software Engineer to lead the evolution of a cutting-edge quantum error correction (QEC) software stack —a critical step toward making quantum computing ...

Contract Senior Software Engineer (Java or Python) | Inside IR35 Contract length: 6 months (with potential to extend) Location: London Working Environment: On-site You will be joining a private equity firm as a senior software engineer, to work across the following responsibilities: Develop and support ...

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 ...

services company with leading capabilities in digital, cloud, and security. Combining unmatched experience and specialized skills across more than 40 industries Role : AI Native Software Engineer Location: London, UK Work type: Hybrid Duration: 6 Months Job Summary: We are seeking a hands‐on AI Native Software Engineer … real business workflows. This is a 100% hands‐on engineering role, ideal for a senior technologist who thrives at the intersection of AI systems, software engineering, and cloud infrastructure. Key Responsibilities: Core Duties Design, implement, and maintain AI agent workflows, including retrieval‐augmented generation (RAG), orchestration, tool/function ...

already embedded on platforms like Rightmove and Zoopla, reaching millions of homeowners per year. About The Role We're looking for a strong Software Engineer (full-stack) to join our product engineering team. You'll be someone who thinks of yourself as an engineer first, with deep … business operates day-to-day, so comfort with and curiosity about AI tooling is a must. What You'll Do as our new Software Engineer Build polished, responsive frontend experiences using Hotwire (Turbo & Stimulus) and Tailwind CSS Design and build full-stack features across our Rails application, from ...

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 ...

Software Engineer Contract to Permanent Hybrid (London) Rates negotiable Most backend systems look fine on paper until they hit production. This role is about building services that actually work at scale, under real user demand. Why This Role Leading major media/streaming end client Real production impact ...

Backend Engineer 📍 London, England (Hybrid) 💼 Permanent My client is looking for a Backend Engineer to join a growing engineering team building modern, cloud-native products that directly impact customer experience and business growth. This is a hands-on role for someone who enjoys solving complex technical problems, collaborating … ownership and cares deeply about delivering quality solutions. You’re naturally curious about modern engineering practices and emerging technologies, particularly how AI is shaping software development, but you apply these tools thoughtfully and pragmatically. You’re comfortable operating in fast-paced environments and making sound decisions even when there ...

Software Engineer | Full Stack 🎯 Prop-tech startup tackling one of the UK’s most broken systems using AI-powered technology to drive real innovation.... watch this space🏡 The team is now looking to hire their 4th Engineer. They’re looking for someone who goes beyond simply executing tickets … takes the time to think critically about why and how things should be built. What they're looking for: 4-6 years experience in Software Engineering (with 2+ years ideally using Next.js + Node.js) AI-first mindset, you use Claude Code, Cursor, and similar tools as a matter ...

Embedded Software Engineer | UK (Hybrid) My client is an innovative technology company developing advanced hardware and networking solutions for high-performance computing environments. Theyre looking for Software Engineers to build embedded and host software for high-speed systems, working closely with hardware teams to deliver production … ready solutions from early prototypes. Responsibilities Define software architecture with cross-functional teams Develop embedded software for network interface hardware Linux PCIe driver development Build network control and monitoring tools (server/client) Enhance DevOps and CI/CD pipelines Requirements Strong embedded software development experience Experience ...

Senior Software Engineer (TypeScript/Python, FinTech, AI) London (Hybrid) £95,000 The Opportunity Join a high-growth, regulated fintech building next-generation infrastructure at the intersection of traditional finance and digital assets . The platform enables institutional clients to trade, tokenise, and manage real-world financial assets ...

Senior Software Engineer | ~£950/day Outside IR35 | 6-months initial contract | London Industry: Trading Location: London Job Type: Contract - 6-month initial Our client is building the next generation of execution and order management (EMS/OMS) infrastructure for global commodities trading. You will join a small … tightly integrated with risk, pricing, and market data systems to support high-performance trading environments. This is a senior, hands-on role for an engineer who wants end-to-end ownership — from low-level protocol integration through to distributed execution services and trader-facing tooling. What ...

build custom architecture at the cost and speed of mass production - unlocking even the most complex sites. We’re currently seeking a Principal Platform Software Engineer to join our team, focused on shaping the system architecture and delivering software that defines the mobility, manipulation, autonomy, and reliability … robotic systems. Responsibilities: Defining software architecture for robotic mobility, manipulation, autonomy, and platform tooling; Developing and maintaining production-grade software in Modern C++ and Python for embedded Linux environments; Designing APIs, abstractions, and reusable libraries that support reliable and scalable robotic systems; Building software for task ...

Lead Software Engineer Contract to Permanent Hybrid (London) Rates negotiable Most streaming platforms struggle to scale backend systems properly you’ve seen it. This role is about building the infrastructure that actually holds up under real-world production demand. Why This Role Leading major media/streaming ...