1 to 25 of 74 Permanent Senior Developer Jobs in London

Senior Software Developer 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 Developer -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 code and … 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 Developer -Experience Required Proven experience as a Full Stack Developer or similar role with a strong portfolio of projects. Expertise in Node.js and AWS Lambda for More ❯

Senior Full Stack Developer 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 Full Stack Developer - Responsibilities Design, develop, and maintain advanced applications. Collaborate with cross-functional teams to define, design, and ship new features. Guide and develop the skills of junior engineers. Optimize components for maximum performance across a vast … quality and speed. 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 Full Stack Developer - Experience Required Proven experience as a Senior Full Stack Developer or similar role with a strong portfolio of projects. Expertise in Node.js and More ❯

Senior Android Developer London - Hybrid (occasional travel into the office) Up to £85k basic salary An outstanding opportunity for a Senior Android Developer to join a dynamic and innovative tech scale-up, building mobile products that impact thousands of users every day. This is a trusted engineering environment where a Senior Android Developer can … take real ownership, solve complex challenges, and drive forward product innovation. As a Senior Android Developer, you'll work across both the flagship customer-facing Android app and a native SDK that powers critical on-device functionality. You'll play a central role in shaping how the Android platform evolves, balancing technical excellence with a product-focused mindset. … Performance, reliability, and user experience will be at the heart of everything you deliver. In this senior position, the Senior Android Developer will have genuine influence over architectural decisions, mentor fellow engineers, and collaborate closely with backend, product, and data specialists. You'll also be encouraged to explore new tools and AI-driven workflows to improve both More ❯

Senior Full Stack Developer 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 … Engineering,orarelatedfield,orequivalentexperience. FamiliaritywithRESTfulAPIsandmobilelibrariesfornetworking. StrongproficiencyinJavaScript,includingDOMmanipulationandtheJavaScriptobjectmodel. Experiencewithautomatedtestingsuites,likeJestorMocha. Excellentproblem-solvingskillsandtheabilitytothinkalgorithmically. ExperiencewithcloudmessageAPIsandusageofpushnotifications. KnowledgeofCI/CDpipelines,codesigning,anddeployment(AppStore,GooglePlay). Understandingofsecurecodingpractices. Excellentwrittenandverbalcommunicationskills For more information, contact Katie at Matched Group. Senior Full Stack Developer/Senior Full Stack Engineer/Full Stack Developer/Full Stack Engineer/Software Developer/Software Engineer/Senior Developer/Senior Engineer/Senior Software Developer/Senior Software Engineer More ❯

Job Title: Senior Developer (.NET, React, Azure) • Job Type: Permanent • Location: London (Hybrid) • Industry: ReInsurance • Salary: £100,000-£110,000 + Bonus • Skills: C#, .NET, React, Azure, REST, Snowflake Roc Search have partnered with a global Insurance company who are looking for a Senior Developer to join their Reinsurance unit. The Position The Senior Developer … solutions within the Reinsurance Segment. This role is critical in driving technical excellence, ensuring alignment with Lloyd's, PRA, and FSA regulatory frameworks. They are looking for an innovative Developer with a forward thinking mindset, who can bring design and architecture experience to the table, who is happy to have a real impact on the project. The successful candidate More ❯

LocationBloomsbury Square, London, United Kingdom# Senior Developer at N Consulting LtdLocationBloomsbury Square, London, United KingdomSalary£550 - £650/dayJob TypeContractDate PostedSeptember 16th, 2025Apply Now Role Title: Senior Developer Experience: 10years Work mode: Hybrid Contract duration: 6 months Location: Bishopsgate, London We are seeking a highly experienced Senior Developer with deep hands-on expertise in More ❯

Senior C# Developer Based at client locations, working remotely, or based in our Godalming or Milton Keynes offices. Salary Negotiable, DoE, plus company benefits. Due to the nature of this position, you must be willing and eligible to achieve a minimum of SC clearance. To be eligible, you must have been a resident in the UK for a … track unsafe products Powering systems that help the government monitor and reduce greenhouse gas emissions from commercial transport Role Summary Triad Group Plc is seeking a skilled and experienced Senior C# Developer to join our dynamic team. As a Senior Developer, you will be responsible for designing, developing, and maintaining software applications using .Net Core with … development processes and methodologies. Skills and Experience: Relevant training, qualifications and experience in software development practices (Apprenticeship/Degree/Masters etc) 8+ years proven experience as a C# Developer or similar software development role. Proficiency in C# programming language and .NET framework including .Net Core Strong understanding of object-oriented programming principles. Experience with software development methodologies such More ❯

long-lasting relationships. You'll be someone who is both comfortable working proactively and managing your own tasks, as well as confident collaborating with others and communicating regularly with senior managers, directors, and BDO's partners to help businesses effectively. You'll be encouraged to identify and draw attention to opportunities for enhancing our delivery and providing additional services … to organisations we work with. As a Senior Developer, you will play a key role in designing, developing and maintaining high-quality software solutions. You will work closely with other developers, UX/UI designers and stakeholders to ensure that our products meet the highest standards. Your expertise in C#, .NET, React and Azure will be crucial in … driving our technology initiatives forward. The Senior Developer is a key role within BDO IT's Solutions Development team and reports to either a Lead Developer or the Solutions Development Senior Manager. You'll also: Act as a hands-on full-stack developer with strong front-end development skills and a good understanding of UX. More ❯

LocationBloomsbury Square, London, United Kingdom# Senior Java Developer at N Consulting LtdLocationBloomsbury Square, London, United KingdomSalary£400 - £450/dayJob TypeContractDate PostedSeptember 12th, 2025Apply NowWork mode: Hybrid, Office location will be Bishopsgate, London Contract duration: 6 months Location: London - JOB DETAILS Role Title: Senior Developer We are seeking a highly skilled and experienced Senior Developer More ❯

Senior C++ Developer/Software Engineer (Linux SQL C++17) London/WFH to £110k Global-leading FinTech is seeking a Senior C++ Developer 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 … business performance for their clients. This is a great opportunity to accelerate your career alongside established business and technology leaders, and gain/deepen your finance experience. As a Senior C++ Developer, you'll be responsible for designing and building unique technical solutions, meeting user requirements and contributing to the evolution of the cutting-edge platform. Not only … discipline Ideally you will have experience working in a financial services or trading environment although technical skills of far greater importance What's in it for you: As a Senior C++ Developer you will receive a competitive package: Salary to £110k Pension (to 9% contribution) Healthcare Volunteer/charity days Hybrid working Career development and training Apply now More ❯

Senior Software Developer - £65,000 to £85,000 – Hybrid – London FryerMiles are delighted to be working with a global AI business to assist with their recruitment of a Senior Software Developer to join their team in London. This is a fantastic opportunity for Senior Software Developer to join a rapidly growing global business working … with AI/Machine Learning Desirable experience, with Angular and Flutter Eligible to work in the UK and obtain UK Security Clearance (as a minimum) If you're a Senior Software Developer with good problem solving and creativity skills, please apply today and one of our Consultant's will be in contact to discuss the role in more … detail. Senior Software Developer - £65,000 to £85,000 – Hybrid – London More ❯

Senior Software Developer - £65,000 to £85,000 – Hybrid – London FryerMiles are delighted to be working with a global AI business to assist with their recruitment of a Senior Software Developer to join their team in London. This is a fantastic opportunity for Senior Software Developer to join a rapidly growing global business working … with AI/Machine Learning Desirable experience, with Angular and Flutter Eligible to work in the UK and obtain UK Security Clearance (as a minimum) If you’re a Senior Software Developer with good problem solving and creativity skills, please apply today and one of our Consultant’s will be in contact to discuss the role in more … detail. Senior Software Developer - £65,000 to £85,000 – Hybrid – London More ❯

Senior Backend Developer Location: London Hybrid: minimum 2 days a week (40%) onsite (in line with departmental requirements) Lane Clark &Peacock (LCP) is a leading independent consultancy that uses powerful analytics fused with human expertise to shape a more positive future. We provide market-leading capabilities across pensions and financial services, energy, health, and analytics. Our technology and … clients leverage the latest technology and analytics across a range of industries to stay at the forefront of data-driven and digital solutions. What's the role? As a Senior Backend Developer in our Insurance Analytics team, you will play a leading role in the continued development of InsurSight, our award-winning insurance analytics platform. InsurSight was launched … reviews, and take ownership of key technical challenge - particularly where complex datasets and performance bottlenecks are involved. You will have the benefit of the guidance of our lead C# developer and Python developer, but also the opportunity to take ownership of your work and to work closely with our wider team of data scientists, actuaries and industry specialists. More ❯

Senior Full Stack Mobile Developer Tech : React Native, JavaScript, Android, iOS Why? start-up financial services, revolutionising the industry Location : Hybrid - 2 days in the office (Central London) Salary : £80,000 - £100,000 benefits 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 Full Stack Mobile Developer - Responsibilities Design, develop, and maintain advanced applications using React Native. Collaborate with cross-functional teams to define, design, and ship new features. Optimize components for maximum … quality and speed. 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 Full Stack Mobile Developer - Experience Required Proven track record of developing and maintaining high-quality mobile applications using React Native from concept through to launch. Focus on how More ❯

Senior Full Stack Developer/Engineer (JavaScript Python API) London to £100k Opportunity to progress your career in a senior, hands-on Senior Full Stack Developer 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 … 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 Full Stack Developer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future … experience, happy to mentor more junior developers You're likely to be degree educated in Computer Science or similar tech discipline What's in it for you: As a Senior Full Stack Developer you will receive a competitive package: Salary to £100k 25 days holiday (increasing to 30), plus Christmas Eve Vitality healthcare plus a host of wellbeing More ❯

Power Platform Senior Developer - London (Hybrid) - £61k We're looking for a Senior Power Platform Developer to take ownership of building and enhancing digital solutions that transform how the business works. You'll be at the forefront of developing applications across Power Apps, Power Automate, Power Pages, and Dynamics 365, while also helping integrate them with More ❯

Power Platform Senior Developer - London (Hybrid) - £61k We're looking for a Senior Power Platform Developer to take ownership of building and enhancing digital solutions that transform how the business works. You'll be at the forefront of developing applications across Power Apps, Power Automate, Power Pages, and Dynamics 365, while also helping integrate them with More ❯

Senior Full Stack JavaScript Developer Salary: £77,000 - £82,000 pa (depending on experience) plus benefits, perks and healthcare options Location: Hybrid/2 x days per week - Travel to London Job Type: Permanent Security Clearance: This role is exclusively open to UK sole nationals who either hold or are eligible for Security Clearance (SC). We are … on the lookout for a talented and motivated Full Stack JavaScript Developer to join a dynamic Engineering team. If you're passionate about creating innovative web and mobile applications while ensuring high performance and scalability, this is your opportunity to make an impact! Your Role: * Provide technical leadership and mentorship to a team of developers, guiding them through collaboration … of at least one leading Node framework (Express.js, Nest.js, Hapi.js) * Expertise in at least one modern front-end framework (Nest.js, Remix.js). * A track record in a lead or senior developer role, with experience of mentoring and guiding development teams. * Proficiency in HTML5, CSS3, and JavaScript (ES6+). Security Clearance Requirements: You must be eligible for Security Check More ❯

Role - Senior Integration Developer Salary - Up to £60k + 10% Bonus Work Pattern - Remote Skills - Azure Functions, Logic Apps, MS Programming The Role A new position has come to light for a Senior Integration Developer to join a company who have had their strongest financial year ever. Historically a portion of their integration work has been … Azure Functions, Logic Apps, Service Bus and APIM Microsoft Programming Skills Source Control - GIT or other (any is fine) SSIS - Bonus - not essential If you are a talented Integration Developer interested in progressing your career with an organisation committed to meeting and innovating the needs of an increasingly diverse client and consumer base with the best talent across the … someone that might be interested? You could earn £1,000 of retail vouchers if you refer a successful candidate to Oscar. Email: to recommend someone for this role. Role - Senior Integration Developer Work Pattern - Remote Skills - Azure Functions, Logic Apps, MS Programming Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy. To More ❯

Role - Senior Integration Developer Salary - Up to £60k + 10% Bonus Work Pattern - Remote Skills - Azure Functions, Logic Apps, MS Programming The Role A new position has come to light for a Senior Integration Developer to join a company who have had their strongest financial year ever. Historically a portion of their integration work has been … Azure Functions, Logic Apps, Service Bus and APIM Microsoft Programming Skills Source Control - GIT or other (any is fine) SSIS - Bonus - not essential If you are a talented Integration Developer interested in progressing your career with an organisation committed to meeting and innovating the needs of an increasingly diverse client and consumer base with the best talent across the … someone that might be interested? You could earn £1,000 of retail vouchers if you refer a successful candidate to Oscar. Email: to recommend someone for this role. Role - Senior Integration Developer Work Pattern - Remote Skills - Azure Functions, Logic Apps, MS Programming Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy. To More ❯

Senior AI Developer £80,000 + bonus + benefits London or Brighton Join a leading international eCommerce organization committed to driving innovation through AI. We are looking for a Senior Frontend Developer to lead the modernization of our core systems, utilizing React and JavaScript to enhance performance and efficiency. Your expertise will be key in transforming … of software development experience, including significant work in system modernization. Strong expertise in React and JavaScript. Familiarity with REST APIs and cloud infrastructure. Hands-on experience with AI-based developer tools (e.g., GitHub Copilot, ChatGPT, Tabnine). Excellent leadership, communication, and collaboration skills. Passion for clean code, software architecture, and continuous improvement. Why Join Us? Competitive salary (£80,000+ More ❯

Senior Software Developer - Backend Team London - Adhoc - mostly remote Salary up to £70k Interview ASAP Join a private equity-backed organisation currently undergoing significant transformation and change. This is an exciting opportunity to be part of a small, dynamic development team driving global and UK initiatives within a large, established business. We are seeking a talented Senior Software Developer with expertise in .NET and C# to support backend operations and deliver innovative, scalable solutions. Key Responsibilities: Develop and maintain robust backend systems using .NET and C#. Integrate with Azure services, including ServiceBus, to enhance system functionality. Implement and support event-driven architecture to improve system responsiveness and scalability. Drive faster, more visible integrations across systems More ❯

Senior Developer, Full Stack (Next.js, React Native) I’m working with a fast-paced, tech-focused, global technology platform that’s undergoing a multi-year transformation program to revolutionize its B2C services. Backed by substantial investment and part of a financially stable group, this company is embarking on a multi-year transformation program, making now the perfect time More ❯

Senior Software Developer - £100k - Discretionary Bonus - Hybrid Overview We are partnering with a global digital marketing and technology agency specialising in online gaming to hire a Senior Software Developer. In this senior role, you’ll take technical ownership of solutions end-to-end, mentor junior developers, and ensure delivery of highly scalable, high-availability platforms that … drive cutting-edge online gaming experiences.You’ll also play a senior position in driving the move from a PHP-heavy stack to a modern TypeScript/React front end, helping define and deliver greenfield solutions with a premium, customer-first focus. Role and Responsibilities Drive full-stack development projects, ensuring high-quality delivery across both frontend and backend. Act More ❯

Senior eFX Algo Developer Location: London (Hybrid - 3 days in office) Role Overview We are seeking a highly skilled Senior Java Developer to join the eFX Algo IT team as a Subject Matter Expert (SME) in low latency trading systems. This is a hands-on development role focused on building and enhancing pricing, hedging, and market More ❯