1 to 25 of 105 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 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/Developer (Full Stack JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets … established 10 years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Software Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and … understanding of web development practices, tools and technologies You enjoy learning and picking up new things You're flexible and able to adapt to changing priorities You have full software development lifecycle experience including CI/CD and testing You're collaborative with Agile team experience, happy to mentor more junior developers You're likely to be degree educated More ❯

Senior Software Engineer/Developer (C# .Net) London onsite to £150k Are you an experienced C#, backend focussed Software Engineer? You could be progressing your career in a senior, hands-on role at a global Asset Manager with c$3 million under management. As a Senior Software Engineer within the trading … You are collaborative with excellent communication and stakeholder management skills You are degree educated in Computer Science or similar technical discipline What's in it for you: As a Senior Software Engineer/Developer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension … Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Senior Software Engineer/Developer (C# .Net) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from More ❯

Senior Software Engineer, Pricing and Derived Data Senior Software Engineer, Pricing and Derived Data Job Location London Employment type Regular Department Technology Targeted Start Date Immediate DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value … that matters-it's how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus. We are looking to hire a Senior Software Engineer into the Pricing and Derived Data team. We are responsible for building foundational APIs and data services to price all products and related products that … allowing our users to, for example, ensure responsible allocation of capital across the firm. Our systems are used across the organisation by Trading Desk leads, Global Risk Management, and Senior Leadership. We collect, transform, aggregate and disseminate pricing and related derived data, such as: Commodity Price and Yield Curves - Mark-to-market, and Mark-to-model settlement prices Option 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 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 ❯

Senior Software Engineer - Analytics Front Office Senior Software Engineer - Analytics Front Office Job Location London Employment type Regular Department Technology Targeted Start Date Immediate DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and … how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus. The UP - Analytics Front Office team is looking for a Senior Software Engineer who relishes working in challenging time-critical environments solving complex problems alongside highly capable peers . Our team operates services providing real-time PnL and … of trading desks each with varying degrees of portfolio and model complexity . While previous experience in the trading and finance industry is beneficial, we're looking for talented software engineers with or without industry-specific expertise . UP - Analytics Front Office primarily operates C# services heavily utilizing RX for LINQ-style composition and asynchronous dispatch. We often reach More ❯

Senior Software Engineer page is loaded Senior Software Engineerlocations: Londontime type: Full timeposted on: Posted Todaytime left to apply: End Date: September 18, 2025 (14 days left to apply)job requisition id: 130157 End Date Wednesday 17 September 2025 Salary Range £81,999 - £122,999 Flexible Working Options Hybrid Working, Job Share Job Description Summary … . Job Description JOB TITLE: Senior Software Engineer SALARY: £81,999 - £91,110 LOCATION(S): London HOURS: Full-time WORKING PATTERN: Our work style is hybrid, which involves spending at least two days per week currently, or 40% of our time, at our office location. About this opportunity We're on a mission to build the bank … What you'll need Generally, you are technically minded and skilled at java. You have developed a project from inception to production and understand the value of well tested software and production feedback.We're looking for engineers that can ask penetrating questions, design and communicate robust solutions, develop in short iterative cycles following XP practices, while being an agile More ❯

Overview Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring senior software engineers who are comfortable contributing across all layers of the application and developing features end to end. Details Role : Senior Software Engineer - Full Stack Location : London, UK (Hybrid, In-Person 4 days a … defense companies like QinetiQ and retail tech startups such as Standard AI. The entire team consists of early-stage startup veterans passionate about building exceptional products. The Role A senior software engineer at Capsa is expected to own projects and features from conception to production, working across the stack to deliver improvements to our AI platform. Key … vision and will have a direct impact on its success. Have the opportunity for fast career growth. Enjoy yourself! Apply if: You have 5+ years of experience as a software engineer in a venture backed startup or top tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You More ❯

Senior Backend Software Engineer/Developer (Rust HFT) London/WFH to £180k Do you have expertise with backend software engineering within trading/finance environments? You could be progressing your career at a hugely profitable High Frequency Trading firm that specialise in crypto markets. As a Senior Backend Software Engineer you will … design and develop backend services for real-time risk, pricing, trading engines and market making systems, working across the full software development lifecycle using Rust. You'll collaborate with a small, talented team, collaboratively problem solving and working on complex and challenging systems with interesting work and huge bonus earning potential. Location/WFH: You'll join the team … in Central London with flexibility to work from home twice a week. About you: You have strong backend OOP, multithreaded software engineering experience You have commercial Rust development experience You have experience of working on high throughput, low latency trading systems You achieved a 2.1 or above in Computer Science from a top tier university You are collaborative and More ❯

Senior Java Software Engineer/Team Lead (FX Trading) London to £135k Do you have advanced Java technical knowledge combined with team leadership skills and a strong knowledge of Capital Markets? You could be progressing your career at the Investment Management arm of a global bank. As a Senior Java Software Engineer/Team … speed You have excellent communication and collaboration skills You are degree educated in Computer Science or similar technical or numerate discipline What's in it for you: As a Senior Java Software Engineer/Team Lead you will receive a competitive Salary to £135k Bonus Pension One day work from home per week Continuous training and career … progression opportunities Apply now to find out more about this Senior Java Software Engineer/Team Lead (OOP Java Algorithm) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will 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 ❯

Senior Software Engineer Sustainable Cloud Native Platform Distributed Systems Up to £100,000 per annum plus bonus and stock Hybrid in London office Skills: Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed Systems About the Role Are you a Senior Software Engineer with significant cloud/infrastructure experience? Are you interested in joining a … work with top talent and make a real impact on projects? We are partnered with an exciting cloud startup that has received record funding and is looking for innovative Senior Software Engineers to join their ambitious team. With a new CTO experienced in building leading cloud platforms, the team is rapidly growing and aims to attract the best … the world's most accountable and sustainable cloud provider. What We're Looking For Tech-agnostic mindset, with preferable experience in Golang, Rust, or C/C++ Experience in software infrastructure or building cloud-native applications Experience working with high-scale, distributed systems Understanding of systems design and component interactions If this sounds like you, please apply to learn More ❯

Senior Software Engineer Competitive salary dependent on skills and experience and potential for equity participation Remote – ideally commutable to Leeds and London when required - MUST BE BASED IN THE UK Full Time Handshaik is streamlining business development for dealmakers. About Us Handshaik is on a mission to transform how deals get done. Backed by significant scale-up … re excited by solving complex problems end-to-end, working in a collaborative environment, and having a tangible impact, you’ll feel at home here. The Role As a Senior Software Engineer, you will work within the development team to help shape the technical vision. This is a hands-on role that requires deep technical expertise, entrepreneurial More ❯

Senior Software Engineer - DevX SCAnS (Developer Experience) Location London Business Area Engineering and CTO Ref # Description & Requirements In Bloomberg, the Developer Experience (DevX) group provides services and tooling that empowers over 9,000 engineers with their productivity needs and enables them to write high quality, performant and secure code. What goes into making Bloomberg's software … know if any are defective? How can we protect Bloomberg from malicious actors while still benefiting from open source? These are the questions you'll help us answer! The Software Composition Analysis and Security (SCAnS) team in DevX plays a foundational role in securing Bloomberg's software supply chain (SSC) by enabling engineers to use open source and … third party software safely, in an operationally resilient manner. Our products integrate with build and analysis systems to ensure software component metadata (as SBOMs) is available throughout the SSC to build a software inventory, affording license and vulnerability identification firm-wide. We control the ingress of components to prevent malware from entering the network, which provides us 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 ❯

class leadership team working to fulfil Gentrack's global aspirations by having the most talented people, an inspiring culture, and a technology first, people centric business. The Opportunity The Senior Software Engineer role is a pivotal position within our dynamic software development team, carrying advanced technical responsibilities. Leveraging extensive expertise, senior engineers actively contribute to … the design and architecture of Gentrack software systems, taking charge of coding and implementing complex components, and conducting rigorous code reviews. Beyond technical expertise this role is instrumental in mentoring and coaching junior team members and fostering a collaborative team environment. Senior Software Engineers accurately address challenging technical problems, make substantial contributions to project management, and communicate … with both technical and non-technical stakeholders. Their commitment to continuous learning and leadership qualities positions them as invaluable assets, playing a key role in the success of our software projects by guiding teams towards optimal solutions and aligning technical strategies with broader business objectives. The Specifics Design and implement high-level software architectures that meet the project 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 ❯

WebMethods Senior Software Engineer Hybrid (2-3dpw Onsite) £70,000 - £78,000 Must hold, or be eligible to obtain, Security Clearance (continuous residency in the UK for the past 5 years, without any single absence of more than 28 days in a row). About the Role Our client is seeking an experienced WebMethods Senior Software Engineer to contribute to the delivery of large-scale, complex, and innovative enterprise digital projects. The work involves agile custom software development and integration at an enterprise scale, using a mix of integration, open-source, and proprietary technologies. Working Model This is a hybrid role. Your working locations will vary depending on project needs and … may include offices, client sites, and your home. Please note this role cannot be carried out fully remotely. Responsibilities Take a senior engineering role focused on building seamless integration using the webMethods Hybrid Integration solution for both cloud and on-premise systems (minimum 5-8 years of relevant experience). Lead and deliver development projects as a Development Lead. More ❯

us on our journey to reshape the future of private market investing and unlock new opportunities for wealth managers and investors alike. About the Role We are seeking a Senior Software Engineer to play a key role in building and scaling our software solutions. You will be a technical leader within the team, contributing to architectural … while remaining hands-on with coding. This role does not involve line management but requires a strong ability to guide and support the team through technical challenges. As a Senior Software Engineer, you should be highly proficient in both front-end and back-end technologies, comfortable working with modern frameworks, and have a deep understanding of software … teams to deliver high-quality, scalable, and maintainable solutions. Responsibilities Lead on designing and implementing scalable client-side and server-side architecture. Drive technical excellence, promoting best practices in software development, testing, and deployment. Work closely with product managers and engineers to translate business requirements into robust technical solutions. Develop and optimise APIs, databases, and cloud-based infrastructure. Ensure 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 ❯