651 to 675 of 793 Software Engineering Jobs in the City of London

Are you interested in working in Tech for Good? Have you got experience working with Kotlin, or are keen to work with Kotlin? Principal Software Engineer Clean Energy for EV Charging Up to 150k + bonus + benefits Hybrid in London 2 days per week Weve just partnered with an industry leading GreenTech, on a mission to transition the … through providing affordable and accessible green energy for the charging of electric vehicles. Due to exciting projects in the pipeline, they are looking to grow their team with Principal Software Engineers who have experience in the following: Kotlin software development (They are also open to Core Java experience, as long as you are happy to work with Kotlin … days a week If youre interested in working with new technologies while also making a difference to the world, positively impacting through technology, apply now for this fantastic Principal Software Engineer opportunity! Please note : Due to compliancy reasons, we will only be able to consider applications based in and eligible to work the UK. More ❯

Full-Stack Software Engineer - London - 5 days a week Location: London, central, fully onsite (early stage, London platform team) Salary: Up to £130,000 Seniority: 3–8 years | Permanent | Early hire on a small platform team I'm working with a well funded early stage AI platform looking for a versatile full-stack engineer to join the London platform … infrastructure for novel technical problems Own slices of the stack end to end, from SQL and backend logic to front end UX Work closely with a tiny, high-calibre engineering team and shape engineering practices and culture Tech profile I need 3 to 8 years of hands-on full-stack experience building production products Strong backend experience in More ❯

Full-Stack Software Engineer - London - 5 days a week Location: London, central, fully onsite (early stage, London platform team) Salary: Up to £130,000 Seniority: 3–8 years | Permanent | Early hire on a small platform team I'm working with a well funded early stage AI platform looking for a versatile full-stack engineer to join the London platform … infrastructure for novel technical problems Own slices of the stack end to end, from SQL and backend logic to front end UX Work closely with a tiny, high-calibre engineering team and shape engineering practices and culture Tech profile I need 3 to 8 years of hands-on full-stack experience building production products Strong backend experience in More ❯

time | Salary + Equity | Purpose-led startup Joyned is on a mission to help organisations build strong, safe communities through better communication. We’re looking for a hands-on software engineer to take ownership of our codebase and help shape how the product evolves. We’re a funded startup, built in partnership with Brightec (the team behind apps for … has already helped churches, charities, events and commercial organisations (including Hillsong, Big Church Festival, Newday and Lifetime Brands) transform how they connect with their communities. This is a solo engineering role, as we kick-off our in-house engineering team. You'll be our only full-time engineer, writing, testing and shipping code across the whole stack. You More ❯

Java Software Engineer Our client, a leading FX trading and liquidity solutions provider, is expanding its Core Engineering team and is looking for talented developers to build and optimise next-generation trading systems. What You’ll Do Design, develop, and enhance low-latency, high-throughput trading components. Work on real-time FX pricing, execution, and risk systems. Apply … Working Model Hybrid: 2 days per week onsite in Central London, 3 days remote. Why Join Work on cutting-edge trading systems used globally. Join a collaborative, high-calibre engineering culture. Competitive compensation and growth opportunities in a fast-moving environment. If you’re ready to take on complex engineering challenges and make an impact in global FX More ❯

We're looking for a Senior-level Software Engineer with strong JavaScript/TypeScript skills and experience across modern web stacks. You'll be instrumental in our transition away from Drupal as we modernise and scale our platform. Tech Stack: At least 4 years commercial experience with JavaScript or TypeScript and Node Exposure of Laravel and/or Python More ❯

innovation, helping R&D teams and Creators to invent, protect, and monetise ideas faster with AI at the heart of it (LLMs & Agentic AI). We're growing the engineering team that will be working shoulder to shoulder with some impressive co-founders. If you're comfortable with real autonomy and ownership, building fast, and solving problems end-to … seven figure recurring revenue in under 12 months and are completely redefining the industry the product sits within. Stack Java, Python, JavaScript 5-days a week in person, London Software Engineers that are building/want to build 0-1... let's chat. More ❯

innovation, helping R&D teams and Creators to invent, protect, and monetise ideas faster with AI at the heart of it (LLMs & Agentic AI). We're growing the engineering team that will be working shoulder to shoulder with some impressive co-founders. If you're comfortable with real autonomy and ownership, building fast, and solving problems end-to … seven figure recurring revenue in under 12 months and are completely redefining the industry the product sits within. Stack Java, Python, JavaScript 5-days a week in person, London Software Engineers that are building/want to build 0-1... let's chat. More ❯

simplify access to stable, secure digital finance, enabling users to save, transact, and grow their money with confidence. We’re looking for x8 Java Developers to join their core engineering team. You’ll help design and build backend systems that power real-time financial operations, from transaction processing to user authentication and fund management. The work is greenfield, the More ❯

and editing data directly in the database Collaborate closely with the CEO and other Full Stack Engineers on high-impact projects Technical Requirements 2–3 years of back-end engineering experience, ideally in a startup environment Strong knowledge of Python and Flask Proficiency with SQL and Postgres Experience with AWS services (migration experience is a plus) Ideal Candidate Quality More ❯

and editing data directly in the database Collaborate closely with the CEO and other Full Stack Engineers on high-impact projects Technical Requirements 2–3 years of back-end engineering experience, ideally in a startup environment Strong knowledge of Python and Flask Proficiency with SQL and Postgres Experience with AWS services (migration experience is a plus) Ideal Candidate Quality More ❯

Location : Central London (On-site). About the Role: As a Senior .NET Developer, you’ll play a key role in designing, developing, and maintaining software applications. You’ll collaborate closely with cross-functional teams to translate user needs into technical solutions that are robust and user-friendly. Key Responsibilities: Translate user requirements into effective technical solutions Develop and More ❯

November Contract Length: 4 months (with potential extension) Interviewing Now – Fast Process A newly acquired tech-driven business in the claims management space is looking for two experienced contract Software Engineers to join a growing agile development team. The company is investing heavily in its roadmap and platform evolution, and this is a great opportunity to contribute to meaningful More ❯

billion-dollar businesses. The company’s trajectory is ambitious, from zero to seven figures in recurring revenue within its first year and this is only the beginning. As a Software Engineer, you’ll join a small, high calibre team where ownership is everything. You’ll work primarily on the backend, integrating with LLMs, and collaborating directly with the founders … s nothing quite like building the next tech unicorn, together, in the same room, ask the big players. What you’ll need to succeed: Strong experience building production quality software (Java, TypeScript, or Python) Curiosity and adaptabilit y: you learn new technologies quickly and apply them effectively Hunger and drive: you’re comfortable working in ambiguous, fast paced environments More ❯

Forward Deployed Software Engineer | AI & Robotics | London A high-growth AI startup building the software that powers the next generation of autonomous systems and robotics for defence and critical operations are looking for a Forward Deployed Software Engineer to join their team. What You'll Be Doing You'll deploy and integrate advanced AI software directly … fast-moving, on-site technical environments What's In It For You Up to £120k + equity 7% employer pension Free meals, private health & dental High autonomy in an engineering-led culture World-class team (ex-Palantir, Microsoft, defence tech) Work on deployed technology shaping the future of autonomy On-site in London with travel opportunities Apply now for More ❯

C++ Software Engineer London | Hybrid (2-3 days per week) | Competitive salary + bonus Ncounter is partnering with a leading trading technology group to hire an exceptional C++ Software Engineer to build and evolve high-performance order gateway systems used in fast-moving fixed income markets. This is a hands-on role developing ultra-low-latency services that … team of developers, quants and platform engineers, working across a high-availability C++ codebase to deliver fast, resilient and observable services. Youll be empowered to design, implement and test software that directly impacts trading performance, scalability and reliability. Key Responsibilities: Design and develop high-throughput order gateway components in modern C++ Implement robust connectivity, order validation and routing logic More ❯

Senior Full Stack Software Engineer (React Native/AWS) 💰 £80,000 – £95,000 + Bonus & Benefits 📍 Hybrid – London We’re partnered with a high-growth health and fitness technology company on a mission to help people train smarter through personalised performance platforms. Following an internal promotion within the engineering team, they’re now looking for a Senior Full … Stack Software Engineer to join a small, agile squad building next-generation digital coaching tools. The Role You’ll be working in a cross-functional engineering team responsible for designing and scaling the core systems behind their adaptive training experience, from mobile applications to intelligent backend services. This role will see you own end-to-end feature delivery … simple, elegant solutions A collaborator who values impact, quality, and shipping great work over process-heavy environments The Process Initial video call (45 mins) with a member of the engineering team — part conversational, part short coding exercise (LeetCode-style) Take-home task (2–3 hours, realistic and reflective of day-to-day work) Final video interview with two engineers More ❯

Senior Full Stack Software Engineer (React Native/AWS) 💰 £80,000 – £95,000 + Bonus & Benefits 📍 Hybrid – London We’re partnered with a high-growth health and fitness technology company on a mission to help people train smarter through personalised performance platforms. Following an internal promotion within the engineering team, they’re now looking for a Senior Full … Stack Software Engineer to join a small, agile squad building next-generation digital coaching tools. The Role You’ll be working in a cross-functional engineering team responsible for designing and scaling the core systems behind their adaptive training experience, from mobile applications to intelligent backend services. This role will see you own end-to-end feature delivery … simple, elegant solutions A collaborator who values impact, quality, and shipping great work over process-heavy environments The Process Initial video call (45 mins) with a member of the engineering team — part conversational, part short coding exercise (LeetCode-style) Take-home task (2–3 hours, realistic and reflective of day-to-day work) Final video interview with two engineers More ❯

Lead Software Engineer - TS, React, Next.js, Node Up to £120k Hybrid Would you like the opportunity to work for a fast-growing start-up, currently looking for a Lead Fullstack TypeScript Engineers? You will be joining a dynamic product team, where you will be building great software and diving into the world of AI. The company is committed … to providing a seamless experience for both customers and internal teams. You will work within a unified codebase that drives their B2B software and custom AI. As a Lead Software Engineer, you will be working across their stack using TypeScript, React, Next.js, Node.js. Core requirements: Commercial experience with their stack TypeScript, React, Next.js and Node.js Strong expertise in … designing and maintaining scalable, high-performance web applications A good understanding of databases Experience working on B2B software platforms with multiple users would be a bonus. If you’re a Lead Software Engineer (TypeScript) who enjoys the idea of working in a fast-paced start-up, please apply. More ❯

Job Title: Senior Software Engineer (Distributed Systems & ML Infrastructure) Client: Elite Tech Firm Salary: Up to £220k Base + Industry-Leading Bonus Location: London (Hybrid) Sells: Work on next-gen distributed systems and ML infrastructure, take ownership of multiple greenfield builds, zero bureaucracy, a genuinely collaborative culture, stunning offices, and dedicated time for personal projects every Friday! An Elite … FinTech firm is expanding its world-class engineering team and looking for exceptional Software Engineers who thrive on solving complex distributed problems at scale. You’ll be joining an elite group of engineers (alumni of NUS/McGill/MIT/Oxford) who have previously built systems at Meta, Twitter, Citadel, Ubisoft, and Jane Street ! This environment offers … unlimited tech resources , total engineering autonomy, and a culture that genuinely celebrates innovation and curiosity. Role Design and build high-performance, distributed systems for large-scale ML infrastructure Drive best practices in software architecture, testing, and scalability Lead and collaborate on multiple greenfield initiatives focused on performance, reliability, and scale Skills Open to all experience levels Proven experience More ❯

TypeScript, GraphQL Salary up to £95k + Benefits Are you passionate about crafting beautifully engineered, maintainable systems — and helping others do the same? We're looking for a Senior Software Engineer to join a fast-growing, product-led tech company that's redefining how engineering teams deliver value through smarter insights and modern architectures. You'll be joining … mission-critical insights for global clients. This isn't just another coding role — it's a chance to shape architecture, mentor peers, and lead by example in a modern engineering culture that embraces AI-assisted development tools like GitHub Copilot etc. 💻 What You'll Do Design and implement clean, testable, maintainable software across the stack Lead the evolution … modern DevOps Mentor teammates and foster a culture of technical excellence and growth Continuously improve delivery processes using cutting-edge AI tools 👀 About You 5–7 years in commercial software development Strong experience with React , TypeScript , and/or GraphQL (backend skills in Node.js , Python , or Go a plus) Comfortable designing and contributing to design systems and component libraries More ❯

Forward Deployed Software Engineer | Defence Tech & AI | London (Hybrid | 4x days onsite) About Want to work on software that powers the autonomous age? This defence tech team are building next-generation AI and systems software to help organisations collaborate with robots, sensors, and also autonomous systems. You’ll be joining at a pivotal stage of growth, working … and AI experts on high-stakes projects Work hands-on in the field, seeing your code in action with real users High autonomy, clear purpose 🚀 What they value: Strong engineering fundamentals and curiosity across tech stacks A bias for action and problem-solving in complex, real-world settings Collaboration and direct engagement with end users A willingness to travel More ❯

Forward Deployed Software Engineer | Defence Tech & AI | London (Hybrid | 4x days onsite) About Want to work on software that powers the autonomous age? This defence tech team are building next-generation AI and systems software to help organisations collaborate with robots, sensors, and also autonomous systems. You’ll be joining at a pivotal stage of growth, working … and AI experts on high-stakes projects Work hands-on in the field, seeing your code in action with real users High autonomy, clear purpose 🚀 What they value: Strong engineering fundamentals and curiosity across tech stacks A bias for action and problem-solving in complex, real-world settings Collaboration and direct engagement with end users A willingness to travel More ❯

Senior Software Developer (Java/Spring) | London (Hybrid) | £50K 💰 📍 Location: London (Hybrid) 🕒 Experience: 2+ years 💼 Type: Full-time | Permanent 🚀 The company are developing software solutions that address a wide range of challenges faced by the public sector. Their customers include government departments, agencies, and other public sector organisations, helping them streamline processes and achieve their goals effectively. They … are looking for a skilled Senior Software Engineer who looking is eager to learn, and are ready to contribute to our ongoing growth and success. 💻 What You’ll Do: 🔧 Develop and maintain applications using Java & Spring Boot ✅ Write and maintain unit, integration, and end-to-end tests 🔍 Participate in code reviews and uphold coding standards 🎨 Help design scalable, secure … your contributions. 🏥 Private health insurance to keep you covered. 💼 Pension scheme for a secure future. ✨ If you're passionate about writing high-quality code and want to work on software that makes a difference, this role is for you More ❯

Software Developer/Engineer (C++ Mac Extensions EDR) WFH/London to £80k Do you have experience developing and integrating Mac software? You could be progressing your career at a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; the platform monitors network protocols in real-time, parses the commands … data structures to extract key metadata which is then analysed by in-house algorithms and allows customers to detect hackers, malware, data leakage and other malicious activity. As a Software Developer you will focus on enabling the core product, written in C/C++ for Windows and Linux to run on Apple Mac software, using the latest Extensions … of the time, meeting up with colleagues in the London office once or twice a month. About you: You have strong C++ development skills You have experience of integrating software with Apple Mac Extensions and APIs You have a good knowledge of Network Security and EDR/EDTR You have VPN client or security experience You're collaborative with More ❯