1 to 25 of 38 Permanent Senior Software Engineer Jobs in Central London

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 … 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. ...

Senior Software Engineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £110,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Senior Software Engineer with extensive knowledge of building distributed systems … so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Senior Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world ...

Role: Senior Software Engineer – Defence Location: North London Job Type: Permanent, Full Time, Hybrid We are partnering with a leading defence radar technology company to recruit a Senior Software Engineer . This is an exciting opportunity to work on cutting-edge systems, contributing … full software lifecycle for advanced, high-performance products used in critical environments. The Role As a Senior Software Engineer, you will take ownership of software development from initial concept through to verification and delivery. You’ll play a key role in designing robust solutions, supporting ...

Senior Software Engineer Salary: Negotiable (Depending on Experience) Location: North London Area Schedule: 3-days on site and 2-days WFH per week The Opportunity We are supporting a globally recognised engineering business at the forefront of advanced radar and surveillance technology in the search … Senior Software Engineer. This is an excellent opportunity to play a key role in the development of innovative, high-performance software solutions used within cutting-edge maritime navigation and defence systems. You will take ownership of software design across the full lifecycle, contributing to both ...

Senior Software Engineer (Golang/Python) | Drug discovery Platform | Fully Remote, EU/UK| Base Salary Up to £110,000, plus early equity+benefits I am currently partnering with an elite engineering team building a world-class platform for decentralised and federated computing. They are solving … most complex challenges in modern tech: how to process highly sensitive data across global organisations without ever compromising privacy. They are looking for a Senior Backend Engineer who wants to move beyond standard applications and help architect the infrastructure for the next generation of secure data collaboration. This ...

Software Engineer (Senior) | C#/.Net & SQL Server | Systematic Hedge Fund Trading Live Markets Salary: £120,000 – £160,000 + bonus (up to 100%) Location: City of London, on-site My client is a long-established systematic hedge fund, just under 20 people in total, with roughly … half the business sitting in engineering. They’ve been running for over two decades, quietly successful, and very deliberate about how they build both software and teams. You’d be sat directly on the trading floor in London, working alongside traders, engineers, and the CEO day to day. ...

Senior Software Engineer (Full-Stack) 📍 Location: City-based (Hybrid/On-site options available) Role Summary We are seeking a highly experienced Senior Software Engineer to drive innovation and technical excellence across the full software development lifecycle. You’ll work across a modern … Required Experience & Skills Strong experience building full-stack web applications using TypeScript/React and C#/.NET (or similar technologies) Deep understanding of software engineering principles, including modular architecture and design patterns Proven experience designing and developing RESTful APIs and microservices Experience architecting end-to-end systems across ...

Senior Software Engineer (Systems & Automation) London, Hybrid, Permanent We are partnering with a high-growth technology firm in London to find a Senior Software Engineer who excels at the intersection of product engineering and operational efficiency. This is a role for an engineer ...

Senior Software Engineer | Sports Data London, UK | Remote Working Up to £80,000 + Company-wide benefits We’re partnered with a high-growth sports media network that operates a portfolio of market-leading brands and partnerships across the sports betting and tech space. Their mission … fans with premium content, real-time insights, and cutting-edge tools, all powered by modern, cloud-native technology. They are looking for an established Senior Software Engineer to join their expanding data team, where you will be working directly on key services that power a core part ...

SENIOR SOFTWARE ENGINEER (NODE)/LONDON/£120,000 BASE SALARY Want to be 100% hands-on , own end-to-end quality and sit really closely to the product? You can do this WHILST working with AI tools. This business, that operate in the FinTech space, have … recently secured millions in Series B funding. I’m looking for a Senior Software Engineer to join their scaling team. If you can own processes, lead projects while remaining hands-on and work end-to-end... this one’s for you. What ...

Senior Java Engineer – Product Engineering | B2B SaaS | Insurtech Up to £120,000 per annum plus bonus and excellent pension London – 2 days a week Java | Spring Boot | AWS | Kubernetes | Event-Driven Architecture Senior Java Engineer – We have been exclusively engaged by a leading B2B SaaS technology … business to find a Senior Java Engineer with a “product engineering” mindset to join its growing team. Operating at the intersection of insurance and technology, the company is transforming its platforms into fully SaaS-based solutions, scaling internationally and shaping the future of Insurtech products. Backed ...

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 … 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 ...

Senior Software Engineer – AI/Agentic Systems London (Hybrid) We’re partnering with a cutting-edge AI startup redefining how intelligent systems operate at scale. Their mission is ambitious: to push the boundaries of agentic AI and build platforms that automate complex, multi-step human workflows—unlocking … alongside world-class AI talent, and directly shape a platform sitting at the intersection of research and real-world deployment. The Opportunity As a Senior Software Engineer , you’ll play a key role in building and scaling an enterprise-grade AI platform. You’ll operate ...

Senior Golang Engineer Location: London Salary: £90,000-£110,000 + Equity We're looking for a Senior Software Engineer specialised in Golang to join a fast‐growing, regulated fintech business that are building modern digital products to support both consumers and businesses. With … build, and maintain scalable, resilient backend services and APIs in Go Collaborate closely with product, engineering, and operations to deliver high-quality, well-tested software Contribute to architectural decisions and help define engineering standards as the team grows Identify and address performance bottlenecks, reliability concerns, and technical debt Support ...

Senior Mathematical Software Engineer Location: London Permanent: Full time, on site Salary: £125,000 to £140,000 A specialist insurance business is building out its analytical software capability, supporting a proprietary simulation platform used across underwriting, exposure management, actuarial and portfolio decision making. This … complex marine exposure data. This is not a traditional Back End role focused on web applications or APIs. The work is centred on mathematical software engineering, simulation, large scale data processing and building maintainable code (Julia) for a complex production platform. The business does not require prior insurance experience. ...

Senior C# Engineer City of London (On-site) Permanent | £90,000 – £120,000 We’re partnered with an innovative proprietary trading firm in the City of London that is hiring a Senior C# Software Engineer . You’ll work on greenfield projects, cutting-edge technology ...

Senior Software Engineer – Python/Django (6 Month Freelance Contract) 📍 Location: Fully Remote across Europe/UK 📅 Duration: 6 Months 💰 Rate: Competitive A major European mobility and technology organisation is undergoing a significant digital transformation, modernising core systems and building new platform capabilities. Role Summary ...

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 ...

Senior Backend Engineer Location: London, Hybrid (2 Days Onsite) Salary: £90,000 - £105,000 + Competitive bonus 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. They are looking for a Senior Backend Engineer with deep expertise in JVM technologies to help scale and enhance their high-performance systems. There will be a requirement to use Kotlin moving forwards! This is an opportunity to work with ...

title: Senior Software Engineer Job type: Permanent Salary: Up to £85,000 (depending on experience) Role Location: Central London – Hybrid (1–2 days per week in office) The company: Signify are partnered with a fast-growing fintech redefining how underserved communities access financial products. Backed by leading ...

Senior Software Engineer | Remote | £60,000 - £70,000 | C# | .Net | React | Azure | Microservices | .NetCore | .Net Developer | Full stack Developer | Opus have exclusively partnered with a brilliant Saas company that harness technology to build Software within the Proptech industry. They’re currently looking for a Senior Developer to come on board and work across greenfield projects and adding new functionality to existing systems. As a Senior Developer you will be part of a Development team of 5 where you will be building API’s and building full stack applications. On top of this ...

looking for a Senior Software Engineer to join a growing team building smart, scalable tools used by professionals across a range of industries. You'll work onsite in London, helping shape robust backend services and responsive user experiences using React, NextJS and NodeJS. What ...

operations are conducted, building systems that are safer, smarter, and dramatically more environmentally responsible. Location: London or Porto The Role We’re seeking a Senior Software Engineer to design, build, and maintain backend containerised services that power our scalable edge‐compute platforms. You’ll work closely with … Software Team Lead and collaborate across multidisciplinary engineering teams, providing technical leadership while remaining hands‐on with complex systems. What You’ll Do Build production‐grade software using .NET C#, Python , and modern backend technologies Design and prototype services using containerised microservices Apply and challenge engineering best practices ...

Java/Microservices/API design/LLMs/AI/Claude Code/Copilot Role: Senior Software Engineer Company: Financial Services Location: London - Hybrid 3 days per week Salary: up to £120,000 Join a Service Modernisation team driving AI-first software development in financial ...

trajectory is ambitious, from zero to seven figures in recurring revenue within its first year and plus over £20million in funding already!! As a Senior Software Engineer, you’ll join a small, high calibre team where ownership is everything. You’ll work primarily on the backend, integrating … 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, React or Python) Curiosity and adaptabilit y: you learn new technologies quickly and apply them effectively Hunger and drive: you’re comfortable working ...