26 to 50 of 104 Senior Software Engineer Jobs in London

Senior Software Engineer - SC Cleared Location: London Salary: Up to £80,000 Clearance: Active SC Clearance and eligibility for DV To apply, email : Overview A leading organisation delivering operational cyber capabilities is looking for a Senior Software Engineer to join its growing technical team ...

Senior Software Engineer (.NET/C#) | Greenfield Systems Rebuild | Remote | £80,000–£100,000 This is a hands-on senior engineering role with real technical authority. You will be the lead engineer and technical decision-maker on a greenfield rebuild of a mission-critical system … working within a small, senior team and reporting directly to the Head of Technology. Once the build is delivered, the role expands into enterprise architecture responsibilities. If you are a strong .NET engineer who has been moving into architecture and wants to own the outcome rather than advise ...

scale up our tech team with the very best engineers to supercharge our growth. We are looking for a bright, driven, full-stack Senior Software Engineer who is excited about solving complex problems and building scalable platforms. The role As a Senior Software Engineer … Understand complex business problems then propose and implement technical solutions Have input into the architecture, working closely with the Head of Technology and other senior team members Work with other engineers and the business to improve user experiences Bring your experience and enthusiasm to our engineering culture Promote excellence ...

Have you built low-latency, high-performance systems and want to work at the cutting edge of crypto trading infrastructure? Senior Software Engineer (C++) - Crypto Trading Salary: up to £185k + bonus + RSUs Location: Fully Remote We are delighted to be continuing our partnership with … APIs, all within a low-latency, high-throughput environment serving millions of users and institutions worldwide. They are looking for the following experience in Senior Software Engineers: Strong C++ development (5+ years) Low latency, high-performance systems Highly concurrent/distributed systems (Linux environment) Experience within trading, financial ...

Senior Software Engineer Python London, N7 (Hybrid) £75,000 £90,000 + Equity Deep Tech Scale-Up Sponsorship available - have to be a UK resident and based locally to the role. Were partnered with a well-funded deep tech scale-up with a global footprint, currently scaling … their internal platforms and looking for a Senior Cloud Software Engineer to play a key role in building systems that support cutting-edge research and engineering. This is a high-impact opportunity to work in a complex, hybrid environment (cloud and physical systems), where your work directly ...

SENIOR SOFTWARE ENGINEER £85,000 LONDON We're working with a well-established digital media and technology organisation who are growing their engineering function and hiring Senior Software Engineers to help shape the next phase of their internal platforms. This role suits engineers who enjoy … Product, Architecture, and other Engineering teams to ensure solutions are well-designed and fit for purpose Act as a technical sounding board for less-senior engineers, providing guidance and reviewing approaches rather than simply approving code Ensure code quality, performance, and maintainability across the platform TECH STACK Node.js (backend ...

Senior Cloud Software Engineer London, N7 (Hybrid) £75,000 £90,000 + Equity Deep Tech Scale-Up Intro Were partnered with a well-funded deep tech scale-up with a global footprint, currently scaling their internal platforms and looking for a Senior Cloud Software Engineer … complex, hybrid environment (cloud and physical systems), where your work directly enables breakthrough technology. The Role This is a hands-on cloud software engineering role focused on building and owning internal applications and cloud-based systems. Youll work across backend development and cloud infrastructure, with a strong emphasis ...

Senior Cloud Software Engineer London, N7 (Hybrid) £75,000 £90,000 + Equity Deep Tech Scale-Up Intro Were partnered with a well-funded deep tech scale-up with a global footprint, currently scaling their internal platforms and looking for a Senior Cloud Software Engineer ...

Senior Software Engineer Location: London (Hybrid/On-site) Salary: £100,000 – £150,000 + equity About the Company We’re working with an early-stage, venture-backed legal technology startup on a mission to transform one of the UK’s most broken consumer experiences: the legal … strong foundation for navigating regulation while moving quickly in a traditionally slow industry. The Role This is an opportunity for a Staff or Senior Product Engineer to join as one of the earliest engineers in the business. You’ll be part of a small, high-calibre team ...

Senior Flight Software Engineer £65,000 (flexible depending on experience) Competitive Benefits Package Remote, UK Permanent We are looking for a talented Senior Flight Software Engineer to join a fast-growing AI and robotics safety startup. The business is expanding its engineering team … optimal performance. Their solutions focus on robotics and AI applications where reliability and safety are critical. You will play a key role in developing software components that enable the safe and reliable operation of autonomous robotic systems within the wider robotics platform. Working closely with embedded systems, AI/ ...

Title: Sr. Software Engineer Work Schedule: Onsite 5 days Location: London, England Job Summary: We are looking for a hands-on Senior Software Engineer to own and accelerate our product delivery pipeline — from back-end database optimization to client-facing interactive dashboards and reporting platforms. ...

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 ...

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 ...

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 Software Engineer (Backend) Series A | eCommerce x Fintech | Meaningful equity Buying clothes online still isn’t a great experience. Sizing is inconsistent, returns are costly, and customers are often left guessing. Yet despite all the innovation in eCommerce, this problem remains largely unsolved. We’re working … here is the chance to build something that matters, in a team where your contribution is visible from day one. If you’re an engineer who enjoys building real products, solving meaningful problems, and working in an environment where ownership and impact matter more than process, this is worth ...

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 ...

Level: 9 UK Wide We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing to the architecture, development, and improvement of software systems. This role … involves mentoring junior engineers, collaborating with cross-functional teams, and driving the adoption of best practices in software development. Responsibilities Design, develop, and maintain complex software solutions, ensuring they are robust, secure, tested and scalable. Contribute to software architecture decisions, ensuring alignment with project and business goals. ...

Senior Software Engineer Hayes, London Hybrid We are looking for a Senior Web Application Developer with 5+ years of experience in building and maintaining scalable, high-quality applications to join our growing tech team. As a senior member, you’ll play a key role … with various testing methodologies (e.g., unit, integration, end-to-end) and a commitment to writing well-tested code. A commitment to robust and reliable software delivery, including familiarity with practices like no-downtime deployments, proactive monitoring, and identifying potential risks. Proven ability to lead technical initiatives from concept ...

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 ...

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 ...

Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) The following information provides an overview of the skills, qualities, and qualifications needed for this role. ***This is a hybrid role, 2 days remote and 3 days in the office*** Our client actively ...

Role: Python Software Engineer (customer facing) Location: London (hybrid) + some travel Salary: up to £150k base + equity We are partnered with a high-growth, AI software company that helps large enterprises build and deploy tailored solutions to their most complex operational challenges. The company … well-funded, scaling rapidly, and already working with recognised organisations across a number of industries. The Role As a Python Software Engineer, you'll sit at the intersection of engineering and customer impact - working closely with clients to understand their hardest problems and building tailored software solutions ...

About The Role FDM is a global business and technology consultancy seeking a Senior Software Engineer to work for our client within the defence and national security technology sector. This is initially a 12-month contract with very good prospects to extend and will be a hybrid … role will support development across their existing secure communications platform as well as a new AI enabled decision support product. This is a senior position suited to an engineer who can work with a high degree of autonomy, contribute to technical direction and support less experienced engineers within ...

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 ...