1 to 25 of 74 Software Engineer Jobs in the City of London

Application Software Engineer – JavaScript A fantastic opportunity for talented Software Developers, to join an industry-leading software company in Cambridge offering the opportunity to work on a wide variety of web application infrastructure projects using a diverse toolset, with an emphasis on JavaScript, Node.js and related … based from the London or Cambridge office (3 days on site, 2 days remote) Salary – Negotiable + comprehensive benefits Requirements for Application Software Engineer – History of academic excellence including a 2:1 or 1st class honours degree from a leading university plus AAB at A Level (or equivalent ...

Software Engineer/Full Stack Developer (TypeScript Data ETL) London/WFH to £90k Are you a data savvy Software Engineer with full stack skills? You could be progressing your career in a senior, hands-on Software Engineer role at a scaling Fintech … Salary to £90k Remote working Impactful role with complex challenges Great career growth opportunities as the company scales Your role: As a Software Engineer you'll help to build a seamless digital experience that makes complex energy systems simple, powerful and intuitive, creating systems that bring trading ...

Senior Software Engineer/Team Lead (Windows C/C++, C#) London to £115k FTC Are you a skilled C++ Software Engineer with technical/team leadership skills looking for a new opportunity? You could be progressing your career in a senior, hands-on role … global market data provider. As a Senior Software Engineer/Team Lead you will head-up an Agile team (5 engineers) focussed on building and maintaining Exchange Connectivity software systems that require real-time and low latency, maintaining data feeds and developing key underlying transport protocols ...

Java Software Engineer/Developer (Java AWS Spring Boot) London/WFH to £90k Are you a backend focussed Java technologist who enjoys building systems from scratch? You could be progressing your career at a global, prime broker that is replacing the legacy infrastructure used across capital markets … today's complex global markets. The company is experiencing great success in the US and is expanding into the UK. As a Java Software Engineer you will join a small team responsible for building a brand new Futures Trading platform for the UK, primarily using Java with ...

Software Engineer Were now on the lookout for a Software Engineer to support our UK Production Support team that is working on delivering high-quality support and solutions to clients. In your role as Software Engineer, youll work closely with internal teams and clients … local statutory requirements. Provide out-of-hours support to clients when required. Skills & Experience required to perform this post: 7+ years experience in software engineering and a solid understanding of the software development lifecycle (SDLC). Technical experience with OOAD, SOA, Java, J2EE, Spring, React.js, Node JS, Hibernate ...

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 … 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 client needs. While hands-on development is key, this role also carries responsibility for technical decision-making, collaboration across teams, and supporting ...

Software Engineer Were now on the lookout for a Software Engineer to support our UK Production Support team that is working on delivering high-quality support and solutions to clients. In your role as Software Engineer, youll work closely with internal teams and clients ...

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 ...

Senior Software Engineer Key Technologies: C#, .NET, React, JavaScript, Typescript, AWS, Docker City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET Software Engineer to join … UK. This role offers hybrid working, with an office location based in the City of London. This role will suit a Senior Software Engineer, with expert C#, .NET experience having a direct impact from the get-go. ...

Senior Embedded Software Engineer Salary : Up to £100,000 Location : London - 3 days a week We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting … users with seamless, intelligent technology solutions. We are looking for a modern, innovative and driven Senior Embedded Software Engineer to join their growing team. They are looking for someone who has commercial experience working with C software development in an IoT, hardware or embedded solutions environment ...

Software Engineer/Full Stack Developer (TypeScript Data ETL) London/WFH to £90k Are you a data savvy Software Engineer with full stack skills? You could be progressing your career in a senior, hands-on Software Engineer role at a scaling Fintech ...

Software Engineer/Developer (LLM TypeScript Node API) London/WFH to £100k Are you a senior technologist with experience of putting LLMs into production? You could be joining a scaling tech company that has developed a digital distribution platform transforming electronic trading in the institutional FX options … where institutions can place, discover and match option interests electronically - improving liquidity and efficiency for all participants as the platform scales. As an AI Software Engineer you will collaborate with a small team of technologists and successful entrepreneurs to design and implement intelligent solutions to business needs, with ...

Software Engineer London/Hybrid | Perm Role £80,000 - £100,000 Harrington Starr has partnered with a fast-growing fintech that’s transforming how businesses manage foreign exchange and treasury operations. Their technology enables clients to access institutional-grade execution, automate manual workflows, and gain greater transparency across … product offering and deliver cutting-edge solutions that help clients manage risk more effectively. The Role This is an excellent opportunity for an experienced Software Engineer — ideally with a background in financial technology or FX — to join a high-performing engineering team within a scaling fintech. ...

Software Engineer | Energy & Climate Tech | London (Hybrid) We are hiring a Software Engineer to join a scaling Energy Tech startup that’s tackling climate change head-on. They’re backed by top-tier investors (think the people behind Meta, BeReal, and Slack) and scaling at speed. … building the software infrastructure for a decarbonised energy system—writing production Python code that controls tens of thousands of assets like EV chargers, heating systems, and home batteries. Their platform shifts energy use to times when it’s cheaper and greener, with ML models predicting demand in real time. ...

Software Engineer - C++ Title : Software Engineer - C++ Company : Elite Software House Location : Remote (London office) Salary : £80,000 - £115,000 Skills : C++, Algorithms, Boost Overview : Are you someone that thinks that writing slick, classy C++ code can and should be an art? Would you like … part of an internationally recognised team of C++ experts led by the brightest C++ minds in the world? An elite software house are looking for the top 1% of engineers of all levels to come on board as they continue to develop beautiful algorithms which power business decisions ...

Software Engineer - C++ Title : Software Engineer - C++ Company : Elite Software House Location : Remote (London office) Salary : £80,000 - £115,000 Skills : C++, Algorithms, Boost Overview : Are you someone that thinks that writing slick, classy C++ code can and should be an art? Would you like ...

Senior Software Engineer Location: London (Hybrid) Contract Duration: 6 months Join a specialized Applied AI team driving innovation in business operations. The group accelerates AI transformation by developing agentic systems and full-stack infrastructure to automate workflows and drive efficiency. We're seeking a Senior Software Engineer … with corporate grit (processes, ticketing, documentation). Strong knowledge of distributed systems and high-availability APIs . Preferred Qualifications Experience in B2B or enterprise software environments . Ability to define product requirements and deliver end-to-end solutions. We're seeking passionate engineers who thrive in fast-moving, innovative ...

Staff Software Engineer Technical leadership | Azure Architecture | .NET | Angular | Platform Scale GTreasury is scaling its core SaaS platform - and we’re looking for a Staff Software Engineer to help lead that journey. This is a senior technical leadership role where you’ll combine deep hands … level engineers Own production reliability in a “you build it, you run it” model 👀 What We’re Looking For 8+ years of software engineering experience Deep expertise in .NET, Azure, and SQL Server Proven experience designing scalable cloud platforms Strong technical leadership without losing hands-on depth Comfort operating ...

Senior Software Engineer (.Net & Angular) - £70,000 – £85,000 pa + 25% Bonus + Benefits I am working with a leading professional services client in London that are looking for a Senior Software Engineer with full stack capabilities to join a small but talented team. ...

Lead Software Engineer | Major Legacy Transformation (NPPV3 & SC Required) Rate: £550 per day (Inside IR35) Location: London/Remote Hybrid Duration: 6–12 Months Clearance: Active NPPV3 and SC Clearance (Essential) The Opportunity Our client, a premier global consultancy, is seeking a Lead Software Engineer … Clearance . We cannot consider candidates without these active clearances due to the immediate start date. Leadership: Experience leading technical teams through the full software development lifecycle (SDLC) within a consultancy or government framework. Availability: Must be available to start within 1–2 weeks. Preferred Skills (Nice to Have ...

Senior Software Engineer (Robotics) 🤖 London (On-site, 5 days/week) Permanent role with excellent on-site benefits We’re looking for a Senior Software Engineer to help turn our advanced robotics stack into a dependable, real-world product. This is a hands-on role where … write production code, integrate subsystems, and work directly with robots in both simulation and hardware environments 🤖. You’ll build application-level software that connects control, navigation, perception, learning, and platform systems —ensuring they operate as a seamless, reliable whole. Expect cross-disciplinary collaboration, rapid iteration, and solving practical ...

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 (Robotics) London (On-site, 5 days/week) Permanent role with excellent on-site benefits We're looking for a Senior Software Engineer to help turn our advanced robotics stack into a dependable, real-world product. This is a hands-on role where … write production code, integrate subsystems, and work directly with robots in both simulation and hardware environments . You'll build application-level software that connects control, navigation, perception, learning, and platform systems -ensuring they operate as a seamless, reliable whole. Expect cross-disciplinary collaboration, rapid iteration, and solving practical ...

Senior Software Engineer (Robotics) London (On-site, 5 days/week) Permanent role with excellent on-site benefits We're looking for a Senior Software Engineer to help turn our advanced robotics stack into a dependable, real-world product click apply for full job details ...

Senior Backend Software Engineer (Python) Blockchain/Web3 Remote £50-£80k An ambitious Web3 and blockchain-focused team working to create more equitable ownership and compensation models, particularly within gaming. They collaborate closely with leading Layer 1 protocols to deliver secure, scalable infrastructure and provide global economic opportunities … through blockchain technology. The Senior Software Engineer will build and maintain backend systems powering cutting-edge Web3 and gaming technologies. The role focuses on developing REST APIs using Python frameworks (such as Django or Flask) and integrating blockchain and Web3 game technologies as part of a small, agile ...