51 to 75 of 221 Senior Developer Jobs in London

Senior Backend Developer - Python, AWS, Django Central London/Hybrid -one day in the office £75-85k + benefits Were seeking a topflight Senior Backend Developer with a strong software engineering background including 8-9+ years majoring in writing Backend applications using Python and Django (Rest Framework) click apply for full job details More ❯

Are you an experienced Frontend Developer looking for a new challenge and to work for an AI startup with an important mission? 🚀 Senior Frontend Developer – AI Data Security 🚀 Location : Hybrid working 1-3 days a week in central London (King’s Cross) Salary : up to £135,000 + bonus + equity We are excited to continue our … This is an incredibly exciting time to join the team as they are growing across multiple areas of the business, having just secured over £17mil in funding. As a Senior Frontend Developer, you will: Have 6+ years experience as a Frontend Software Engineer Experience developing with: React, Typescript, HTML, CSS A desire to be part of an important … insurance Dental cover Critical illness cover If you enjoy a flexible culture with the ability to work from home a few days a week, apply now for this unmissable Senior Frontend Developer opportunity now! Please note : Due to compliancy reasons, we will only be able to consider applications based in and eligible to work in the UK. More ❯

Are you an experienced Frontend Developer looking for a new challenge and to work for an AI startup with an important mission? 🚀 Senior Frontend Developer – AI Data Security 🚀 Location : Hybrid working 1-3 days a week in central London (King’s Cross) Salary : up to £135,000 + bonus + equity We are excited to continue our … This is an incredibly exciting time to join the team as they are growing across multiple areas of the business, having just secured over £17mil in funding. As a Senior Frontend Developer, you will: Have 6+ years experience as a Frontend Software Engineer Experience developing with: React, Typescript, HTML, CSS A desire to be part of an important … insurance Dental cover Critical illness cover If you enjoy a flexible culture with the ability to work from home a few days a week, apply now for this unmissable Senior Frontend Developer opportunity now! Please note : Due to compliancy reasons, we will only be able to consider applications based in and eligible to work in the UK. More ❯

intuitive and enjoyable to use. Guided by best-in-class UX principles and deep industry expertise, we're on a relentless path to become a leader in decentralized finance. Senior Developer Location London/Remote Salary 45000 - 125000 a year (s) Description About our portfolio company: We are building a decentralized trading platform designed to revolutionize the user … is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human. Job type: Remote job Tags developer design web3 defi crypto code financial finance leader senior digital nomad Sent 1 day ago Apply on external site Share on Facebook Share on Twitter Share on LinkedIn More ❯

Senior UI Developer About the Company: Apexon is a digital-first technology services firm specializing in accelerating business transformation and delivering human-centric digital experiences. We have been meeting customers wherever they are in the digital lifecycle and helping them outperform their competition through speed and innovation. Apexon brings together distinct core competencies – in AI, analytics, app development More ❯

Senior UI Developer About the Company: Apexon is a digital-first technology services firm specializing in accelerating business transformation and delivering human-centric digital experiences. We have been meeting customers wherever they are in the digital lifecycle and helping them outperform their competition through speed and innovation. Apexon brings together distinct core competencies – in AI, analytics, app development More ❯

We're looking for a Senior Android Developer to join an innovative tech company that delivers cutting-edge solutions to regulated industries such as Finance and Healthcare. In this role, you will take ownership of developing Enterprise-level Android applications to enhance user experiences and support delivery of high-quality products. Role: Senior Android Developer Location … with app deployment processes, including Google Play submission, signing keys, and building pipelines. A portfolio of previous Android apps or code samples is highly desirable. If you are a Senior Android Developer interested and wish to learn more please apply or get in touch for more details as interviews will be taking place immediately. More ❯

We're looking for a Senior Android Developer to join an innovative tech company that delivers cutting-edge solutions to regulated industries such as Finance and Healthcare. In this role, you will take ownership of developing Enterprise-level Android applications to enhance user experiences and support delivery of high-quality products. Role: Senior Android Developer Location … with app deployment processes, including Google Play submission, signing keys, and building pipelines. A portfolio of previous Android apps or code samples is highly desirable. If you are a Senior Android Developer interested and wish to learn more please apply or get in touch for more details as interviews will be taking place immediately. More ❯

challenges, love building products end-to-end, and want to shape technology that keeps AI safe in the real world. Job Description We’re looking for a hands-on Senior Developer to help continue the design, build, and scale for our SaaS platform. You’ll work across our stack (React, Python, .NET, and Cloud), and play a key More ❯

Senior Full Stack Developer - Hybrid, London - £75,000-£90,000 🚀 limitless is closely partnered with a multi award-winning audio AI company transforming how the world experiences sound. Since founding, the team of 50 (including 20 top-tier engineers) is building pioneering AI technology that enhances clarity, removes noise and redefines digital audio experiences from broadcasting and podcasts … cloud deployment - A passion for clean, scalable systems and continuous learning Join a team of brilliant minds where you’ll make a real impact shaping the future of sound. 🎧 Senior Full Stack Developer - Hybrid, London More ❯

Senior Full Stack Developer - Hybrid, London - £75,000-£90,000 🚀 limitless is closely partnered with a multi award-winning audio AI company transforming how the world experiences sound. Since founding, the team of 50 (including 20 top-tier engineers) is building pioneering AI technology that enhances clarity, removes noise and redefines digital audio experiences from broadcasting and podcasts … cloud deployment - A passion for clean, scalable systems and continuous learning Join a team of brilliant minds where you’ll make a real impact shaping the future of sound. 🎧 Senior Full Stack Developer - Hybrid, London More ❯

Senior Salesforce Engineer require to join one of the leading MarTech companies in the world. Our team at MRJ have been engaged once again by the CTO of a leading MarTech company that continues to push boundaries and is 100% leading the way when it comes to AI/Data innovation within their market. Due to continued growth, we … have a great opportunity available for a Senior Salesforce Developer to join a dedicated Salesforce team and help modernise how their platform connects with the rest of the global infrastructure/platforms. In summary, this is a unique opportunity to redefine how Salesforce powers this global business. In the words of the Salesforce Leader, day-to-day you … Write clean, maintainable code and set high standards across testing, version control, and release management. What do you need to be considered? We're looking for a Certified Salesforce Developer, a collaborative communicator and problem solver, currently operating at a senior level and who offers the following skills/expertise: Deep experience with Salesforce architecture, Apex, SOQL, Lightning More ❯

Senior Salesforce Engineer require to join one of the leading MarTech companies in the world. Our team at MRJ have been engaged once again by the CTO of a leading MarTech company that continues to push boundaries and is 100% leading the way when it comes to AI/Data innovation within their market. Due to continued growth, we … have a great opportunity available for a Senior Salesforce Developer to join a dedicated Salesforce team and help modernise how their platform connects with the rest of the global infrastructure/platforms. In summary, this is a unique opportunity to redefine how Salesforce powers this global business. In the words of the Salesforce Leader, day-to-day you … Write clean, maintainable code and set high standards across testing, version control, and release management. What do you need to be considered? We're looking for a Certified Salesforce Developer, a collaborative communicator and problem solver, currently operating at a senior level and who offers the following skills/expertise: Deep experience with Salesforce architecture, Apex, SOQL, Lightning More ❯

Senior Backend Developer Location: London - 1x a month Salary: Up to £95,000 (D.O.E) + benefits Fruition Group working with a leading Insurtech unicorn on a mission to transform the insurance industry. Their products have already generated millions in revenue, and now they're investing heavily in new innovations that will shape the sector for years to come. … This is an exciting opportunity for a motivated Senior Engineer who wants to grow in a high-performing, forward-thinking business. As a Senior Backend Engineer, you'll play a central role in building and scaling the systems that power their insurance platform. You'll focus on developing Python-based cloud microservices (FastAPI preferred), contributing to the architecture More ❯

Senior Front End Developer Location: Remote Salary: Paying up to 90,000, depending on experience. Sector: Technology/Data Infrastructure Client: Leading Global Data Centre Provider A prestigious data centre provider is seeking a highly skilled Senior Front End Developer to lead the development of large-scale, enterprise-grade applications. This is a prime opportunity to More ❯

Senior Front End Developer Location: Remote Salary: Paying up to 90,000, depending on experience. Sector: Technology/Data Infrastructure Client: Leading Global Data Centre Provider A prestigious data centre provider is seeking a highly skilled Senior Front End Developer to lead the development of large-scale, enterprise-grade applications. This is a prime opportunity to More ❯

Senior Golang Developer - Web/Vulnerability Scraping 3-Month Rolling Contract (up to 2 years) £600-£650 per day - Inside IR35 Hybrid - London 3 days per week & 2 days working from home Our global media and consumer technology client is seeking a Senior Back End Engineer to join their Information Security team for an initial 3-month More ❯

Senior Golang Developer - Web/Vulnerability Scraping 3-Month Rolling Contract (up to 2 years) £600-£650 per day - Inside IR35 Hybrid - London 3 days per week & 2 days working from home Our global media and consumer technology client is seeking a Senior Back End Engineer to join their Information Security team for an initial 3-month More ❯

Senior MuleSoft Developer 6 Month contract - Inside IR35 - up to £585 per day London based - hybrid working - 3 days office based Current NPPV3 clearance is highly desirable Your main responsibility will be to deliver clean, maintainable, and well-tested code that adheres to SOLID principles. You will work collaboratively across Quality Assurance, DevOps, and other development teams, sharing More ❯

Senior PHP Developer - Payments Team R&D London Senior Full-time Description We're on the hunt for a skilled and detail-driven Senior PHP Developer to join the Payments Development Team at Tebex. As our PHP Payments Master, you'll craft the core systems that power seamless, secure transactions for millions of gamers and More ❯

Senior Software Developer - Python 12-Month Contract Inside IR35 Role Details Location: London or Manchester (2 days/week onsite + monthly team rotation) Duration: 12 months Clearance: BPSS to start; active SC required due to timsecale of the project Team: 10 direct reports, part of a 60+ programme Experience: 4+ years Essential Skills Technical: Strong Python development … open data platforms Ensure code is of high quality and well-documented Work closely with UCD teams and technical experts in an agile environment What We're Looking For: Senior Python developer with strong focus on code quality Experience working with data services Comfortable working in small, agile teams and collaborating with UCD teams More ❯

Senior Software Developer – Python/Ruby Location: London (2/3 days per week on-site) Rate: Up to £650/day (Inside IR35 – 12-month Contract) A major UK government department is seeking an experienced Senior Software Developer to play a key role in the redevelopment of a critical national open data platform. This is More ❯

Senior Software Developer – Python/Ruby Location: London (2/3 days per week on-site) Rate: Up to £650/day (Inside IR35 – 12-month Contract) A major UK government department is seeking an experienced Senior Software Developer to play a key role in the redevelopment of a critical national open data platform. This is More ❯

Senior PHP Full-Stack Developer - £100k - Hybrid Overview We are partnering with a global digital marketing and technology agency specialising in online gaming to hire a Senior PHP Full-Stack 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 More ❯

Senior PHP Full-Stack Developer - £100k - Hybrid Overview We are partnering with a global digital marketing and technology agency specialising in online gaming to hire a Senior PHP Full-Stack 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 More ❯