1 to 25 of 91 Senior Software Engineer Jobs in London

CONTRACT SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW CONTRACT JOB OPPORTUNITY AVAILABLE WITHIN A LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Contract job opportunity for a Senior Software Engineer Globally leading defence/cyber security company £500 - £750 per day (inside and outside IR35 roles available) London … based organisation in an easily accessible location Contract Senior Software Engineer To apply please call or email WHO WE ARE? We are recruiting multiple contract Senior Software Engineers to work with various clients in London ranging from R&D companies, Multi-National Consultancies to SME's and product based companies. Due to the nature of … the work these clients do, you must hold enhanced DV Security Clearance. WHAT WILL THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through the entire More ❯

SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW PERMANENT JOB OPPORTUNITY AVAILABLE WITHIN A GLOBALLY LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Permanent job opportunity for a Senior Software Engineer Globally leading defence/cyber security company Salary up to £100,000 plus clearance bonus London based organisation … in an easily accessible location Permanent Software Engineer To apply please call/or email WHO WE ARE? We are recruiting Senior and Lead Software Engineers to work with a multi-national, industry leading National Security client in central London. Due to the nature of the work you must hold enhanced DV Security Clearance. WHAT WILL … THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through the entire software development life cycle from requirements capture to R&D, implementation to automation. More ❯

SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW PERMANENT JOB OPPORTUNITY AVAILABLE WITHIN A GLOBALLY LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Permanent job opportunity for a Senior Software Engineer Globally leading defence/cyber security company Salary up to £100,000 plus clearance bonus London based organisation … in an easily accessible location Permanent Software Engineer To apply please call 07704 152 640/0203 854 0120 or email WHO WE ARE? We are recruiting Senior and Lead Software Engineers to work with a multi-national, industry leading National Security client in central London. Due to the nature of the work you must hold … enhanced DV Security Clearance. WHAT WILL THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through the entire software development life cycle from requirements capture More ❯

Senior Software Engineer Tech : AWS, NodeJS, TypeScript, JavaScript, ReactJS Why? scaling FinTech, revolutionising the industry Location : Hybrid - 1-2 days in the office (Central London) Our Client A new UK-based financial services provider is launching credit card, personal loans and insurance offerings aimed at delivering fair, flexible, and user-friendly financial products to consumers. The organisation … is committed to empowering individuals by enhancing their understanding and control of personal finance through clarity, intelligence, and technology. Senior Software Engineer - Responsibilities Design, develop, and maintain advanced applications. Collaborate with cross-functional teams to define, design, and ship new features. Optimize components for maximum performance across a vast array of web- capable devices and browsers. Maintain … the highest quality. Troubleshoot and debug to optimize performance. Provide code reviews, feedback, and mentorship to junior developers. Stay up-to-date with new technology trends, applications, and protocols Senior Software Engineer - Experience Required Proven experience as a Full Stack Engineer or similar role with a strong portfolio of projects. Expertise in Node.js and AWS Lambda More ❯

Senior Software Engineer/Developer (Data) London/WFH to £115k Global-leading FinTech is seeking a Senior Software Engineer to take ownership of a new team responsible for data focussed strategic enhancements on their core platform. The organisation is a pioneer in the field of cross-asset securities and derivatives post-trade processing … technology and have created ground-breaking, adaptable software that produces secure and scalable solutions for peak operational efficiency and optimum business performance for their clients. This is a great opportunity to accelerate your career alongside established business and technology leaders and deepen your finance experience. As a Senior Software Engineer, you'll work on strategic initiatives … You'll join colleagues in the London office three days a week with flexibility to work from home the other two days. About you: You're a data centric, Senior Software Engineer with a strong knowledge of modern software engineering best practices You have strong development experience with C#, C++ or Python You have advanced SQL More ❯

Senior Software Engineer Location: London (Hybrid 2 Days a week) Salary: £70,000 - £90,000 TypeScript - Node - React - GraphQL - AWS - CI/CD - The Opportunity We're working with a fast-growing technology business that is looking to add a Senior Software Engineer to their high-performing, cross-functional engineering team. This is a … seeking someone who thrives on solving complex challenges, loves collaborating in a modern engineering environment, and has a passion for writing clean, well-tested code. The Role As a Senior Software Engineer, you will: Build & Deliver - Design, develop, and maintain full-stack solutions using TypeScript, AWS, GraphQL, and more. Take Ownership - Work across frontend, backend, and infrastructure … Help integrate AI and automation into the product suite to tackle problems in smarter ways. Collaborate - Contribute to code reviews, pair programming, and technical discussions within a talented team. Engineer with Quality - Apply TDD practices, ensuring robust automated testing and CI/CD pipelines. Keep Systems Running Smoothly - Ensure applications are secure, scalable, observable, and performant in production (tools More ❯

Senior Software Engineer page is loaded Senior Software Engineerlocations: UK - London (20 Fenchurch)time type: Full timeposted on: Posted Todayjob requisition id: 2025-811 Job Title: Senior Software Engineer (Python) Reporting to: Lead Software Engineer Direct Reports: N/A Position Type: PermanentStanding still is not an option in the … solutions which delight underwritersAbout the OpportunityThe London Market Underwriting & Reinsurance Performance team consists of Actuaries, Reinsurance Specialists and Engineers reporting into the Chief Underwriting Officer (London Market).As a Senior Software Engineer with experience of Agile and DevOps working within the Underwriting Performance Innovation team, you will research, design, test, develop and support software solutions to … an Actuarial Model Management platform, working closely with the central Innovation & Analytics function to define our developing Data Platform and identify opportunities to demonstrate its value.Core Responsibilities Collaborate with software engineers, data engineers, and underwriters to define and deliver the future of Property & Casualty underwriting at TMHCC International Continually improve ways of working, responding to change and maintaining focus More ❯

Senior Software Engineer I page is loaded Senior Software Engineer I Apply locations London time type Full time posted on Posted Yesterday job requisition id R7649 Company Description We're - you might not know our name, but companies like eBay, ASOS, Klarna, Uber Eats, and Sony do. That moment when you check out online … and our partners. And we need your help. Join us to build the digital economy of tomorrow. Job Description Global payments are complex and ever-evolving. At Checkout our software engineers develop the next-generation payments technologies that enable our Merchants to boost their acceptance rates, cut processing costs, fight fraud, and create cutting edge technology that enables extraordinary … customer experiences. We're looking for Senior Software engineers who bring fresh ideas, have a curious nature and are passionate about working in an Engineering environment which focuses on building products to achieve the company's strategic goals. You'll get to work with teams from across 's portfolio of products and services who all have a real More ❯

Taboola, Connexity, and Shopyourlikes) are constantly iterating on products, solving problems for retailers, content creators & influencers, and publishers, building interest in new solutions. We are actively seeking an experienced Senior Software Engineer for our Skimlinks brand, to help us advance our technology stack and product development endeavours. The Senior Software Engineer is based in … London, reports to the Sr. Principal Software Engineer Team Lead, and is a part of the Skimlink's UK Engineering team. This position is a senior-level role responsible for providing technical leadership, guiding and implementing the architecture and design of complex software systems, and driving innovation by combining strong technical expertise with effective communication and … leadership skills to drive success in software development projects. The position will play a pivotal role in designing, building, and implementing systems across all facets of our intricate platform. From managing high-volume data collection and enrichment to automated analysis, and backend services alongside RESTful APIs, your contributions will be fundamental to our success. Additionally, the Senior Software More ❯

Senior Software Engineer (TypeScript Full Stack) London/WFH to £100k Do you enjoy problem solving and working with a range of technologies including functional programming languages such as Elixir, using the right tool for the job? You could be progressing your career in a senior, hands-on Software Engineer role at a successful … office per week) Vitality Healthcare Continuous career development and learning opportunities Influential role as part of a small, close knit team Complex and interesting work Your role: As a Senior Software Engineer you will take ownership, working on technically challenging Greenfield development projects. You'll be working on complex problems with scalability and reliability in mind, across … educated in Computer Science or similar STEM discipline, having achieved a 2.1 or above from a Russel Group/Oxbridge or top 100 global university You are an experienced software engineer with a strong knowledge of best practices and Computer Science fundamentals and experience of delivering complex, data centric software You have advanced analytical and problem solving More ❯

Senior Software Engineer (TypeScript Full Stack) London/WFH to £100k Do you enjoy problem solving and working with a range of technologies including functional programming languages such as Elixir, using the right tool for the job? You could be progressing your career in a senior, hands-on Software Engineer role at a successful … office per week) Vitality Healthcare Continuous career development and learning opportunities Influential role as part of a small, close knit team Complex and interesting work Your role: As a Senior Software Engineer you will take ownership, working on technically challenging Greenfield development projects. You'll be working on complex problems with scalability and reliability in mind, across … educated in Computer Science or similar STEM discipline, having achieved a 2.1 or above from a Russel Group/Oxbridge or top 100 global university You are an experienced software engineer with a strong knowledge of best practices and Computer Science fundamentals and experience of delivering complex, data centric software You have advanced analytical and problem solving More ❯

Senior Software Engineer | Node | TypeScript | React | APIs | Greenfield | AWS | Microservices | £90,000-£95,000 + 10% Discretionary Bonus + Benefits Method Resourcing is thrilled to be partnering with a global leader in the travel services and benefits sector. They're looking for a Senior Software Engineer to drive innovation and drive forward greenfield functionality … as the company dives into AI. The role: As a Senior Engineer, you will join a collaborative, high-impact team where you'll help shape and deliver cutting-edge solutions. This role gives you the chance to design and build cloud-native platforms that leverage AI, automation, and modern architectures at scale. Beyond coding, you'll have a … strong voice in product direction, architectural strategy, and fostering an engineering culture rooted in best practices. If you enjoy creating clean, reliable software while working closely with other skilled engineers, this is an opportunity to make a meaningful impact. Skills & experience we are looking for: Tech Stack Expertise - Skilled in TypeScript (Node.js mainly but also React, this role is More ❯

Senior C++ Software Engineer/Developer (Linux SQL C++17) London/WFH to £110k Global-leading FinTech is seeking a Senior C++ Software Engineer to take ownership of strategic enhancements on their core platform, as well as directly on bespoke client projects. The organisation is a pioneer in the field of cross-asset securities … and derivatives post-trade processing technology, and have created ground-breaking, adaptable software that produces secure and scalable solutions for peak operational efficiency and optimum business performance for their clients. This is an exciting opportunity to accelerate your career alongside established business and technology leaders, and gain/deepen your finance experience. As a C++ Software Engineer … motivated by working on cutting-edge systems and engineering complex solutions You're a positive, proactive team member who excels when working collaboratively You have a strong knowledge of software engineering best practices You're degree educated, having achieved a 2.1 or above in a STEM discipline Ideally you will have experience working in a financial services or trading More ❯

Senior C++ Software Engineer/Developer (Linux SQL C++17) London/WFH to £110k Global-leading FinTech is seeking a Senior C++ Software Engineer to take ownership of strategic enhancements on their core platform, as well as directly on bespoke client projects. The organisation is a pioneer in the field of cross-asset securities … and derivatives post-trade processing technology, and have created ground-breaking, adaptable software that produces secure and scalable solutions for peak operational efficiency and optimum business performance for their clients. This is an exciting opportunity to accelerate your career alongside established business and technology leaders, and gain/deepen your finance experience. As a C++ Software Engineer … motivated by working on cutting-edge systems and engineering complex solutions You're a positive, proactive team member who excels when working collaboratively You have a strong knowledge of software engineering best practices You're degree educated, having achieved a 2.1 or above in a STEM discipline Ideally you will have experience working in a financial services or trading More ❯

Senior Full Stack Software Engineer | B-Corp Start-Up | Net-Zero Carbon Up to £100,000 plus stock London - Hybrid (2 days a week in the office) Typescript, Rust & React Senior Full Stack Software Engineer - We are working with an amazing Carbon Neutral, B-Corp certified start-up to find them a Senior Full Stack Software Engineer to join their purposely small, experienced engineering team. They have received over $10m in funding in the last two years and as reach break-even in the original market, they have some exciting tech challenges in scaling their sustainable platform as they look to expand their reach. As a Senior Full Stack … Software Engineer in a start-up your role will be multi-faceted: Designing and building new features to improve the lives of everyone who uses the platform, whether it's fellow employees or customers. Improving the tooling and infrastructure to make it easier to scale. Collaborating with colleagues in engineering and the wider business to innovate and produce More ❯

Job Title Senior Software Engineer Job Description We're looking for a Senior Software Engineer to join our team and help build, enhance, and scale our products. If you're someone who brings fresh ideas, has a curious mindset, and thrives in an engineering environment focused on delivering strategic business value, we'd love … to hear from you.As a Senior Software Engineer, you'll play a central role in shaping the future of our product suite across the engineering teams at UnderwriteMe. You'll lead technical initiatives, mentor others and help us build systems that are scalable, maintainable, and deliver value to our users. Your work will span the full software … and continuous improvement, ensuring that your team grows stronger together with every project you take on. What type of person fits the role You're a thoughtful and pragmatic engineer who sees software development as a means to solve meaningful problems, not just to write code. You care deeply about building systems that are simple, maintainable, and valuable More ❯

Senior Software Engineer, Product Security Engineering page is loaded Senior Software Engineer, Product Security Engineeringlocations: London, United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: RThe LSEG DevSecOps Engineering team inside the cyber security division is looking for Senior Software Engineers to build tools and automations to help secure software development for thousands of developers across the group. You will be working as part of a geographically distributed remote team comprising of security engineers and software engineers. Our team's mission is to allow engineers to embed security best practices frictionlessly as part of their day to day work. The ideal candidate will have the following skills: Deep … understanding of cyber security principles, secure software development, and threat modeling Experience conducting security assessments, code reviews, and vulnerability management across diverse technology stacks Experience in building full-stack products (web applications, APIs, CI tooling or low-level software) Hands-on experience with cloud technologies (AWS, GCP, Azure) and containers (Docker, Kubernetes), with a focus on security Familiarity More ❯

Job Title: Senior Software Engineer Reporting to: Lead Engineer Role Purpose: As a Senior Software Engineer, you will enhance and support both new and existing products within the Software Engineering group. In addition to contributing to feature development, you will play a role in shaping the technology and process strategies, and occasionally … lead innovation or software design initiatives. Key Responsibilities: Develop new features with a strong focus on high-quality code. Conduct peer code reviews to ensure quality and adherence to best practices. Participate in daily stand-ups, change analysis sessions, and technical presentations. Provide guidance on tool and environment adoption where necessary. Continuously develop knowledge of the business domain and … proficiency in C# at a commercial level. Solid experience with .NET Core and related open-source technologies. Knowledge of Object Orientation, SOA, and relevant design patterns. Experience with modern software development practices, including agile methodologies , version control, code reviews, and continuous integration. Understanding of concurrency, asynchrony, and parallelism. Experience with Test Driven Development (TDD), unit testing frameworks, mocking frameworks More ❯

Job Title: Senior Software Engineer Reporting to: Lead Engineer Role Purpose: As a Senior Software Engineer, you will enhance and support both new and existing products within the Software Engineering group. In addition to contributing to feature development, you will play a role in shaping the technology and process strategies, and occasionally … lead innovation or software design initiatives. Key Responsibilities: Develop new features with a strong focus on high-quality code. Conduct peer code reviews to ensure quality and adherence to best practices. Participate in daily stand-ups, change analysis sessions, and technical presentations. Provide guidance on tool and environment adoption where necessary. Continuously develop knowledge of the business domain and … proficiency in C# at a commercial level. Solid experience with .NET Core and related open-source technologies. Knowledge of Object Orientation, SOA, and relevant design patterns. Experience with modern software development practices, including agile methodologies , version control, code reviews, and continuous integration. Understanding of concurrency, asynchrony, and parallelism. Experience with Test Driven Development (TDD), unit testing frameworks, mocking frameworks More ❯

Senior Software Engineer We're looking for an experienced Senior Software Engineer to join our growing IT team in the insurance sector. You'll take the lead in developing scalable, high-quality web and mobile applications using Microsoft technologies (.NET, C#, Blazor), working closely with international and cross-functional teams. As the lead on … Microsoft technologies, you'll help shape the direction of our software solutions while contributing to critical projects across the business. We are looking for someone with strong and confident stakeholder engagement along with technically strong experience. What You'll Do Design, build, and maintain internal and external web/mobile applications (.NET, C#, Blazor). Lead the technical development More ❯

Title : Senior Software Engineer (Driver/API) Company : HPC R&D Location : London (mostly remote) 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 or ex-Chip firms. They joined because they get … is significantly smaller, with highly 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 around you, and significant hires … and maintain their GPU driver stack, focusing on the performance and efficiency of graphics and compute workloads on cutting-edge GPU architectures. About you: 6 years+ as a Driver Engineer Strong C++ or C programming skills Experience with OpenCL or Vulkan Strong knowledge of GPU development Full details are available. Please don't hesitate to get in touch with More ❯

Title : Senior Software Engineer (Compilers) Company : HPC R&D Location : London (primarily remote) Pay : Up to £160,000 + bonus + benefits 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 because they get more flexibility … is significantly smaller, with highly 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 of the development of a cutting-edge … the team to support this role. Mostly LLVM based, it is important you also have experience working with GPUs to an extent. About you: 6 years+ as a compiler engineer Strong C++ programming skills Experience with LLVM, MLIR, Triton or other compilers Experience with GPU architectures Full details are available. Please don't hesitate to get in touch with More ❯

We are in Business for People, empowering people in service organizations with innovative Enterprise and Business software solutions. We've innovated and taken a new approach to delivering ERP that works for people. Self-driving, adaptive and intuitive software that is changing the way people work. Our solutions empower people and deliver a better people experience so people … our website about how we transform work and how people feel about it, so our customers and their people can thrive. Job Description Are you a seasoned and passionate Software Engineer with a deep understanding of Microsoft Azure and SQL? Do you thrive in designing, developing, and deploying scalable and reliable solutions in the cloud? If so, we … have an exciting opportunity for you to join our dynamic and global team in Europe! As a Senior Software Engineer, you will play a crucial role in building and maintaining our core applications and infrastructure on the Microsoft Azure platform. You will leverage your strong SQL skills to design and optimize our data models and ensure efficient More ❯

Overview Senior Software Engineer Tech for Good Scaleup. Hybrid - Central London. Stack: TypeScript, React, Node et al. The company is $100m funded and helps small businesses and governments to achieve Net Zero with solutions tailored to different budgets and sectors. Responsibilities Join a growing team of cross-functional engineers in an external facing applications team. Develop and … maintain solutions that help organisations of all sizes achieve Net Zero. Collaborate across the engineering team to deliver high-quality software products. Qualifications Proficient in TypeScript, React and Node. Details Senior Software Engineer Up to £105,000 per annum Hybrid - Central London Stack: TypeScript, React, Node et al. How to apply Interested? Apply within or reach More ❯

Senior Software Engineer – Java (Digital Consultancy) – London – Hybrid – up to £85K We’re working with a rapidly growing UK digital consultancy with a headcount of 500+ and offices across the UK. They combine technical excellence with a supportive culture that genuinely puts people first. This is an opportunity to join a cross-functional agile team delivering innovative … finance, e-commerce, gaming, and more. You’ll be working alongside engineers, QA, product, and design to build robust systems that make a real impact. The Role As a Senior Software Engineer, you will: • Work across multiple technologies, producing scalable, testable, and well-architected code. • Develop and maintain RESTful Java APIs and database integrations. • Troubleshoot and solve … complex software issues, ensuring quality and performance. • Guide and mentor less experienced engineers through feedback, pair programming, and coaching. Tech Stack • Backend: Java, RESTful APIs • Cloud & Deployment: AWS, CI/CD pipelines • Other: Third-party API integrations About You • Have strong Java API development experience. • Supports for best practices such as code reviews, pair programming, and automated testing. • Have More ❯