1,176 to 1,200 of 1,331 Software Engineering Jobs in London

who share our vision and are ready to help us shape the future of healthcare. Job Overview We're looking for a thoughtful, curious Fullstack Engineer to join our software team. You'll work closely with our engineers, clinical liaisons, and product experts to help evolve our digital platforms- from device connectivity to data pipelines, patient-facing tools, and … systems — occasionally being in the London office to help with IT infrastructure, testing setups, or other on-site needs. What you'll do: Develop and maintain applications across our software ecosystem using Javascript/Typescript. Design, build, and evolve RESTful & GraphQL APIs and microservice-based architectures. Work with a cross-functional team to ensure the reliability, scalability, and performance More ❯

Change Software Forever QA slows the world down. Flaky tests kill trust, stall releases, and bleed engineering velocity. Duku AI is ending that era. We’re building autonomous agents that think like engineers : they run every critical user journey, catch failures before users do, and self-heal as the codebase evolves. Real AI teammates, not test scripts that … and grew Deliveroo from zero to hypergrowth. We know what elite execution looks like and we’re hunting for one more builder to help us rewrite the rules of software quality. What You’ll Do Ship fast, learn faster : We deploy daily, not monthly Talk to users, shape the roadmap : Sit in the trenches with founders on calls that … Looking For Relentless drive: You execute fast, adapt faster Startup scar tissue : You’ve shipped product with no safety net Fluency with AI/LLMs : LangChain, vector stores, prompt engineering Full-stack firepower : Frontend, backend, infra, no silos Product obsession : You care more about outcomes than outputs Experimental instinct: You build → test → learn → repeat Ideal Background There’s no More ❯

Change Software Forever QA slows the world down. Flaky tests kill trust, stall releases, and bleed engineering velocity. Duku AI is ending that era. We’re building autonomous agents that think like engineers: they run every critical user journey, catch failures before users do, and self-heal as the codebase evolves. Real AI teammates, not test scripts that … and grew Deliveroo from zero to hypergrowth. We know what elite execution looks like and we’re hunting for one more builder to help us rewrite the rules of software quality. What You’ll Do Ship fast, learn faster : We deploy daily, not monthly Talk to users, shape the roadmap : Sit in the trenches with founders on calls that … Looking For Relentless drive: You execute fast, adapt faster Startup scar tissue : You’ve shipped product with no safety net Fluency with AI/LLMs : LangChain, vector stores, prompt engineering Full-stack firepower : Frontend, backend, infra, no silos Product obsession : You care more about outcomes than outputs Experimental instinct: You build → test → learn → repeat Ideal Background There’s no 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 ❯

Software Engineer – AI Startup – Up to 85k 🚀🧠 💰 Salary: £50,000 - £85,000 + meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 1/2 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across … and want to solve real-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 the product forward 💻 Be working end … working closely with customers and value their needs ✅ Are excited by deep technical challenges and solving them simply, don't over complicate it ✅ Bring ideas and improvements to their engineering processes ✅ Are adaptable and comfortable working across their stack ✅ Understand the working dynamics of a fast paced start-up If this role sounds like it could be of interest 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 ❯

for our technology team, as we rapidly approach entering full production in multiple projects. You'll work on a range of customer-facing and internal infrastructure projects, applying your engineering skills to solve complex reliability and scalability challenges. Your ability to build robust automation, design fault-tolerant systems, and your comfort in navigating ambiguity will be key as we … continue to develop and operate advanced reasoning capabilities in software systems at scale. You'll collaborate closely with a multidisciplinary team of software engineers, research scientists, and language engineers in a highly cross-functional environment. This is a hands-on role with real-world impact, offering the chance to shape both our infrastructure architecture and the reliability standards … CD pipelines, and optimize observability, monitoring, and performance tuning; Are a champion for shifting left and developer-driven quality: write testable and maintainable code, advocate for continuous improvement in engineering practices, and empower developers to own reliability from day one; Are pragmatic, collaborative, and bring sound judgment to system design, reliability, and scaling challenges; Have a bias for action 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 ❯

This Salesforce Software Engineer will work closely with existing in-house technology, data and operations teams, and will play a key role in defining the overall solution design and build, and to then ensure its correct implementation. Responsibilities: Lead the design, development, and implementation of Salesforce solutions tailored to meet the specific needs of our financial services business. Collaborate … Sales Cloud, Service Cloud, Experience Cloud. Additional Knowledge on Geogrid, Google Maps or Esri maps implementation along with Salesforce Managed packages such as Conga , Conga Batch , Salesforce Maps. Agile Software Project Management methodologies such as SCRUM and experienced on Dev Ops tools such as ADO Boards and Jira for tracking purpose and project management purpose. Strong understanding of Salesforce More ❯

Lead Software Engineer, front end (L5/6) London; UK Welcome to the video first world From your everyday PowerPoint presentations to Hollywood movies, AI will transform the way we create and consume content. Today, people want to watch and listen, not read - both at home and at work. If you're reading this and nodding, check out our … impact your features have on our commercial objectives and pivoting where necessary. You will consider the long-term direction of the team, making sure that we are developing the engineering capabilities that will allow us to stay ahead of the challenges we are likely to encounter in 6-12 months' time. What we're looking for: At least seven … years of experience as a software engineer, at least 3 on the senior/lead level. You have experience in a high-performing engineering team that is operating at scale. This could come from a scale-up environment or a more established organization recognised for building and shipping with a great engineering culture. An ability to work More ❯

Full Stack Engineer – Fintech SaaS Scale-Up - London 1 day a week in office Salary - £85k-£95k + benefits About the Company Our client is a fast growing fintech software company building innovative tools for global investment firms. Their platform helps investors streamline operations, make data-driven decisions, and drive sustainable growth. About the Role They’re seeking a … Full Stack Software Engineer to help build and optimise features across their award-winning web platform. This is a hands on role in a dynamic, fast-paced environment, ideal for someone who enjoys solving complex problems and working collaboratively with engineering and product teams. Key Responsibilities Build scalable, high-performance features for a modern SaaS platform Optimize existing More ❯

Full Stack Engineer – Fintech SaaS Scale-Up - London 1 day a week in office Salary - £85k-£95k + benefits About the Company Our client is a fast growing fintech software company building innovative tools for global investment firms. Their platform helps investors streamline operations, make data-driven decisions, and drive sustainable growth. About the Role They’re seeking a … Full Stack Software Engineer to help build and optimise features across their award-winning web platform. This is a hands on role in a dynamic, fast-paced environment, ideal for someone who enjoys solving complex problems and working collaboratively with engineering and product teams. Key Responsibilities Build scalable, high-performance features for a modern SaaS platform Optimize existing More ❯

Full Stack Engineer – Fintech SaaS Scale-Up - London 1 day a week in office Salary - £85k-£95k + benefits About the Company Our client is a fast growing fintech software company building innovative tools for global investment firms. Their platform helps investors streamline operations, make data-driven decisions, and drive sustainable growth. About the Role They’re seeking a … Full Stack Software Engineer to help build and optimise features across their award-winning web platform. This is a hands on role in a dynamic, fast-paced environment, ideal for someone who enjoys solving complex problems and working collaboratively with engineering and product teams. Key Responsibilities Build scalable, high-performance features for a modern SaaS platform Optimize existing More ❯

Full Stack Engineer – Fintech SaaS Scale-Up - London 1 day a week in office Salary - £85k-£95k + benefits About the Company Our client is a fast growing fintech software company building innovative tools for global investment firms. Their platform helps investors streamline operations, make data-driven decisions, and drive sustainable growth. About the Role They’re seeking a … Full Stack Software Engineer to help build and optimise features across their award-winning web platform. This is a hands on role in a dynamic, fast-paced environment, ideal for someone who enjoys solving complex problems and working collaboratively with engineering and product teams. Key Responsibilities Build scalable, high-performance features for a modern SaaS platform Optimize existing More ❯

Job title: Software Engineer/Quant Developer (Python) Client: Performance Software Scale Up Salary: up to £200,000 P/A + Bonus (DOE) Location: FULLY REMOTE The role: My client is seeking a talented engineer to join their existing team of elite software engineers and help build their next-generation performance software platform. The existing More ❯

Founding Software Engineer - AI Start-Up (Central London | On-Site | Equity + Salary)🧑‍🚀 One of London’s most promising AI start-ups are looking for their first few Founding Engineers! Backed by top-tier investors and led by an elite founding team from Oxford, Cambridge, and Imperial , this venture is already attracting serious attention within the AI space!! Currently … in stealth mode, they’re now searching for a Founding Software Engineer to join the core team - someone ambitious, technically exceptional, and ready to help build the company from the ground up! 💡 About the Company Founded by alumni of successful AI start-ups, this is a business led by people who’ve done it before - and done it well. … the stack and have real influence over the architecture, tooling, and direction of the product. 🎯 What They’re Looking For: 4+ years of experience in high-growth environments Strong engineering fundamentals and a deep product mindset A top-tier academic background – 2.1/First from top university Experience building and scaling real-world applications from scratch Passion for AI More ❯

Founding Software Engineer - AI Start-Up (Central London | On-Site | Equity + Salary)🧑‍🚀 One of London’s most promising AI start-ups are looking for their first few Founding Engineers! Backed by top-tier investors and led by an elite founding team from Oxford, Cambridge, and Imperial , this venture is already attracting serious attention within the AI space!! Currently … in stealth mode, they’re now searching for a Founding Software Engineer to join the core team - someone ambitious, technically exceptional, and ready to help build the company from the ground up! 💡 About the Company Founded by alumni of successful AI start-ups, this is a business led by people who’ve done it before - and done it well. … the stack and have real influence over the architecture, tooling, and direction of the product. 🎯 What They’re Looking For: 4+ years of experience in high-growth environments Strong engineering fundamentals and a deep product mindset A top-tier academic background – 2.1/First from top university Experience building and scaling real-world applications from scratch Passion for AI More ❯

Founding Software Engineer - AI Start-Up (Central London | On-Site | Equity + Salary)🧑‍🚀 One of London’s most promising AI start-ups are looking for their first few Founding Engineers! Backed by top-tier investors and led by an elite founding team from Oxford, Cambridge, and Imperial , this venture is already attracting serious attention within the AI space!! Currently … in stealth mode, they’re now searching for a Founding Software Engineer to join the core team - someone ambitious, technically exceptional, and ready to help build the company from the ground up! 💡 About the Company Founded by alumni of successful AI start-ups, this is a business led by people who’ve done it before - and done it well. … the stack and have real influence over the architecture, tooling, and direction of the product. 🎯 What They’re Looking For: 4+ years of experience in high-growth environments Strong engineering fundamentals and a deep product mindset A top-tier academic background – 2.1/First from top university Experience building and scaling real-world applications from scratch Passion for AI More ❯

Founding Software Engineer - AI Start-Up (Central London | On-Site | Equity + Salary)🧑‍🚀 One of London’s most promising AI start-ups are looking for their first few Founding Engineers! Backed by top-tier investors and led by an elite founding team from Oxford, Cambridge, and Imperial , this venture is already attracting serious attention within the AI space!! Currently … in stealth mode, they’re now searching for a Founding Software Engineer to join the core team - someone ambitious, technically exceptional, and ready to help build the company from the ground up! 💡 About the Company Founded by alumni of successful AI start-ups, this is a business led by people who’ve done it before - and done it well. … the stack and have real influence over the architecture, tooling, and direction of the product. 🎯 What They’re Looking For: 4+ years of experience in high-growth environments Strong engineering fundamentals and a deep product mindset A top-tier academic background – 2.1/First from top university Experience building and scaling real-world applications from scratch Passion for AI More ❯

Avanti Recruitment is currently working with an early-stage start-up company who are developing next-generation human-computer interaction. They are now hiring for a Software Engineer to lead the creation of their platform. This position will require you in office. This is a rare opportunity to join a fast-growing start-up at an early stage and … innovators, and building a team of exceptional engineers to bring the product to market and shape the way people interact with technology. You will work closely with both internal engineering teams and external developers, ensuring seamless adoption of their technology across multiple platforms such as Unity, Snap Lens Studio, and mobile/web environments. Your day-to-day responsibilities … testing Documentation experience and strong communication skills Must have start-up/Scale-up experience and understand this isn’t your typical 9-5 Desirable skills: Exposure to firmware engineering Contributions to open-source projects Mobile SDKs (iOS/Android) The salary for this role is up to £60,000 maximum, plus generous equity. More ❯

frameworks. Take ownership of production processes to align with dynamic business objectives. Collaborate closely with analysts, quants, and developers, offering constant feedback on investment strategy performance. Expand and upgrade software infrastructure to match evolving business needs. Adopt a systematic approach to problem-solving, enabling scalable solutions. Multitask effectively while working in a team-oriented, collaborative environment. Experience: Minimum … years experience as a software engineer. Front-end experience with React, MUI, AG-Grid, and ECharts. Advanced proficiency in C and Python (required). SQL expertise preferred. Strong communication, organizational skills, and ability to multitask. Ability to work independently and collaboratively with a global team. Prior buyside experience is essential. Compensation: Salary and benefits are highly competitive. Diversity and More ❯

frameworks. Take ownership of production processes to align with dynamic business objectives. Collaborate closely with analysts, quants, and developers, offering constant feedback on investment strategy performance. Expand and upgrade software infrastructure to match evolving business needs. Adopt a systematic approach to problem-solving, enabling scalable solutions. Multitask effectively while working in a team-oriented, collaborative environment. Experience: Minimum … years experience as a software engineer. Front-end experience with React, MUI, AG-Grid, and ECharts. Advanced proficiency in C and Python (required). SQL expertise preferred. Strong communication, organizational skills, and ability to multitask. Ability to work independently and collaboratively with a global team. Prior buyside experience is essential. Compensation: Salary and benefits are highly competitive. Diversity and More ❯

C++ Software Engineer/Developer (C++ Mac Extensions API) WFH/London to £80k Are you a C++ Software Engineer with experience of developing and integrating Apple Mac Extensions and APIs? 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 … 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 C++ Software Engineer 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 ❯

Applied AI Software Engineer - Python, Fast API, AWS, LLMs OB are partnered with a high-growth, B2B SaaS start-up who are looking to hire a highly skilled Applied AI Engineer to their Product Engineering team, where you'll pioneer the development of complex applications leveraging GenAI models. This role won't be a role focused on building … and training models from scratch, instead you'll leverage the latest tools in AI to build software that helps solve business problems, adds value to the product and shape the businesses AI roadmap. Applied AI Software Engineer - Python, Fast API, AWS, LLMs Key skills and experience: 5+ years of experience, ideally working in high-growth start-up or … top ranked University Base salary of £80k-£110k Exceptional equity and benefits package Hybrid working, with 2-3 days a week required in a Central London office Applied AI Software Engineer - Python, Fast API, AWS, LLMs More ❯

impact your features have on our commercial objectives and pivoting where necessary. You will consider the long-term direction of the team, making sure that we are developing the engineering capabilities that will allow us to stay ahead of the challenges we are likely to encounter in 6-12 months' time. What we're looking for: At least seven … years of experience as a software engineer, at least 3 on the senior/lead level. You have experience in a high-performing engineering team that is operating at scale. This could come from a scale-up environment or a more established organization recognised for building and shipping with a great engineering culture. An ability to work … stack, with deep knowledge on server side and all things back end related. BE only experience is OK if you are happy to occasionally help out with FE. Relevant engineering experience for a team building an enterprise-grade SaaS product delivering AI-powered video generation; billing systems, experimentation platforms, video delivery systems, online editors, real-time collaboration and so More ❯