26 to 50 of 94 Senior Software Engineer Jobs in London

Senior Software Engineer Lead complex engineering work | Azure | .NET | Distributed Systems At GTreasury, we build software that sits at the heart of the CFO’s office. Our SaaS platform handles complex financial workflows at global scale - and we’re investing heavily in the next phase … growth. We’re hiring a Senior Software Engineer who enjoys solving hard problems, influencing technical direction, and mentoring others while staying close to the code. 💻 Core Tech Stack C#/ASP.NET Core Azure (cloud architecture & services) Microsoft SQL Server Modern JavaScript frameworks (Angular experience a plus ...

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 … 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 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 (L5) to deliver production-grade code while architecting autonomous AI workflows. This role combines technical expertise, product thinking, and scaling AI solutions across complex systems, working in a small agile team within a larger engineering organization. Key Responsibilities Design, develop, and deploy AI-powered systems that enhance ...

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 (L5) to deliver production-grade code while architecting autonomous AI workflows. This role combines technical expertise, product thinking, and scaling AI solutions across complex systems, working in a small agile team within a larger engineering organization. Key Responsibilities Design, develop, and deploy AI-powered systems that enhance ...

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 ...

Senior Software Engineer - SC Cleared Location: London (Hybrid/On-site) Salary: Up to £100,000 (dependent on experience) Clearance: Active SC clearance (willing and eligible to go through DV) To Apply: Email An opportunity for a senior software engineer to work alongside security … researchers on technically challenging problems with real-world impact. The role involves developing complex software used to analyse, interact with, and expose unintended behaviour in a wide range of platforms and systems. You'll gain deep exposure to operating system internals and unconventional environments, with a strong focus ...

Senior Software Engineer (Backend) - Identity & Authentication AWS * TypeScript * Node.js (NestJS) * REST APIs * Auth0 * Transmit Security * GitHub * CloudFormation Contract - 12 months, upto £650/day inside IR35 ***Hybrid - 3 days office (either London or Manchester office) Leading financial services client is seeking a Senior Software Engineer …/CD pipelines for microservice deployments. Embed DevSecOps best practices across IAM, networking and compliance. Collaborate with Agile teams to deliver high-quality, secure software at scale. Key Skills: Strong Node.js/NestJS and REST API development experience. Skilled in AWS Build and evolve backend services that support login ...

Title : Senior Software Engineer (Compilers) Company : HPC & AI Location : London (primarily remote) Compensation : Up to £190,000 Company : An advanced HPC R&D firm, looking to expand the UK compiler team. Most of the team are ex-Big-Tech, ex-FAANG or ex-Chip firms. They joined … technical leadership. If you want to work alongside some of the brightest, most enthusiastic people in the industry, this may be worth exploring. Role : Senior Software Engineer position with an emphasis on AI Compiler development. You will be a significant hire and will own much ...

Title : Senior Software Engineer (GPU Drivers) Company : AI Acceleration Location : London (very flexible WFH) Pay : Up to £160,000 + bonus and benefits Company : An advanced HPC R&D firm, looking to expand their GPU Driver team. Most of the team are ex-Big-Tech, ex-FAANG … technical leadership. If you want to work alongside some of the brightest, most enthusiastic people in the industry, this may be worth exploring. Role : Senior Software Engineer position. You will be a significant hire spearheading much of their 2025 development. Much of the team will be built ...

build real world value. Are you ready to elevate your career? At Ripple Labs Inc., we offer an outstanding opportunity for a Senior Software Engineer to join our top-tier team in London. As a part of our dynamic and ambitious group, you will play … role in crafting and developing groundbreaking software solutions that drive innovation and success! Responsibilities As a Senior Software Engineer, you will: Design, develop, and implement software systems that meet meticulous quality standards. Work with diverse teams to define technical needs and deliver impeccable solutions. Lead ...

Senior Software Engineer, Python, Django, ReactJS, JavaScript, PHP, Mainly Remote, Central London Senior Software Engineer (Python, Django, ReactJS) required to work for a fast growing and exciting business based in Central London. However, this role is mainly remote. We need an experienced Python Developer ...

Senior Software Engineer, Python, Django, ReactJS, JavaScript, PHP, Mainly Remote, Central London Senior Software Engineer (Python, Django, ReactJS) required to work for a fast growing and exciting business based in Central London. However, this role is mainly remote. We need an experienced Python Developer ...

Senior Software Engineer/Developer (C# .Net) Newcastle onsite to £130k+ Are you a Senior Software Engineer looking to escape the hustle and bustle of London and relocate to somewhere with stunning scenery and a better quality of life (there's also great restaurants ...

Senior Software Engineer Location: London (x3 days a week onsite) Salary: Up to £80k DOE Type: Perm Job Description We are looking for a passionate Senior Java Engineer in London to lead the design and development of core product features and services that power … used by thousands of travellers on a daily basis. As a Senior Java Engineer for an loyalty program team, you will have the opportunity to make a massive impact on traveller's behaviour and booking experience. Specifically, you’ll be responsible for driving improvements to loyalty offerings that ...

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 ...

next generation of AI models to assist artist workflows. See the result yourself Passcode: scaneverything About the role ✨ We are looking for a Senior Software Engineer to own the 3D asset processing and rendering infrastructure in Marso Measure, our desktop material capture application for Windows. …/game workflows and wants to work at a startup connecting frontier AI to 3D asset creation. Where you will have impact 🚀 As a Senior Software Engineer you will own the 3D rendering and asset processing systems that power our material estimation technology and ship Marso Measure ...

Hiring: Senior Software Engineer – Systems Improvement & Scale 🏢 Company: Car Planet 📍 Location: Enfield 🕘 Full-Time (Open to initial contract trial) Car Planet is a fast-growing car supermarket and automotive retail business building and running our own in-house platforms — including Autogrid (our core Dealer Management System), plus … supporting systems like Audiofy (call intelligence) and RoutePortal (logistics & routing). We’re looking for a senior, pragmatic software engineer to inspect, stabilise, and improve live, revenue-critical systems as the business scales. You’ll work hands-on with existing production systems to improve performance, reliability ...

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

Senior Software Engineer (Python) 💰 Up to £130,000 + excellent benefits (including work from abroad) 📍 Hybrid - 2 days onsite in Central London (London Bridge) Are you a Senior Python Engineer who loves solving deep technical challenges? Want to help reinvent how future hardware is created … building a revolutionary platform that turns high-level hardware requirements into complete circuit designs. You’ll work on complex problems at the crossroads of software, data and engineering, collaborating with experts across multiple disciplines. What You’ll Do Own and evolve backend systems across data models, algorithms, infrastructure ...

Lead/Senior Software Engineer - Insurance Hybrid Working - City of London A growing specialist insurance underwriter focused on complex property and catastrophe-driven risks is bringing its technology capability in-house. This is a rare opportunity to join as the first in-house Software Engineer … pathway into future technical leadership. The Role Youll play a key role in modernising core systems, including rebuilding pricing engines and algorithms, while advising senior stakeholders and shaping long-term technical direction. What Youll Do Rebuild and enhance pricing systems and algorithms Design and develop full-stack solutions Contribute ...

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 Software Engineer Full Stack - Ruby on Rails, React Up to £120k DOE Fully Remote - must be UK based A fast-growing sports tech company building high-performance, data-driven products for a rapidly expanding global audience is searching for a Senior Full Stack Engineer . This is a pivotal role for an experienced engineer who thrives on shaping architecture, driving technical direction, and still remaining hands-on in the codebase. As a technical leader within a cross-functional Product Team, you’ll influence the long-term engineering strategy, guide architectural decisions ...

Lead/Senior Software Engineer - Insurance Hybrid Working - City of London A growing specialist insurance underwriter focused on complex property and catastrophe-driven risks is bringing its technology capability in-house. This is a rare opportunity to join as the first in-house Software Engineer ...

office 2 days/week Flexible working : Variety of flexible work patterns subject to line manager discretion e.g. Compressed 9-day fortnight. Reports to: Software Engineering Manager Deadline Note: We reserve the right to close the advert before the advertised deadline if there are a high volume of applications. … Role Summary: Were looking for a Senior Software Engineer to join our Settlement Systems team, part of a broader engineering space that delivers critical systems to help the UK achieve Net Zero by 2050. Our digital platform underpins multiple applications, including settlement tools, forecasting engines, calculation services ...

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. ...