85 web developer jobs found in London

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Full Stack Developer (Java +Angular) London, UK (Hybrid – Minimum 3 Days per Week Onsite) Contract (Inside IR35) : 12+ Months     Key Responsibilities Design, develop, test, and maintain full-stack web applications. Build responsive and intuitive user interfaces using Angular. Develop robust RESTful APIs and backend services using Java and Spring Boot. Work with MongoDB, SQL Server, and/or Snowflake to design and optimize data solutions. Collaborate with Product Owners, Architects, QA, and DevOps teams throughout the software development lifecycle. Write clean, maintainable, and well-tested code following industry best practices. Troubleshoot production issues and optimize application performance. Participate in code reviews and contribute to technical design discussions.   Required Skills & Experience Strong commercial experience as a Full Stack Developer. Expert knowledge of Angular....

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Essential Skills & Experience: · Proven experience in UI/UX design for self-service platforms or similar digital products. · Proficiency in design tools such as Figma, Adobe XD, or Sketch. Strong knowledge of responsive design principles and web/mobile best practices. · Experience conducting user research and usability testing to drive design improvements. · Familiarity with accessibility standards (e.g., WCAG 2.1) and inclusive design principles. · Ability to work in an Agile environment, delivering iterative design solutions in collaboration with cross-functional teams. · Excellent communication skills to articulate design decisions and gather stakeholder feedback effectively Familiarity with GDS Service Standards and the Digital Service Assessment process Work with clients to design and develop digital services that are user-friendly, accessible, and compliant with GDS standards. Lead the development...

Full Stack Developer (Java +Angular) London, UK (Hybrid – Minimum 3 Days per Week Onsite) Contract (Inside IR35) : 12+ Months     Key Responsibilities Design, develop, test, and maintain full-stack web applications. Build responsive and intuitive user interfaces using Angular. Develop robust RESTful APIs and backend services using Java and Spring Boot. Work with MongoDB, SQL Server, and/or Snowflake to design and optimize data solutions. Collaborate with Product Owners, Architects, QA, and DevOps teams throughout the software development lifecycle. Write clean, maintainable, and well-tested code following industry best practices. Troubleshoot production issues and optimize application performance. Participate in code reviews and contribute to technical design discussions.   Required Skills & Experience Strong commercial experience as a Full Stack Developer. Expert knowledge of Angular....

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

AI Engineer - Demand Generation (Contract) 6 months Outside IR35 Contract - Must work from the UK Alto Software Group is a B2B SaaS company that powers more than half of all UK housing transactions each year. We create software solutions that connect businesses and consumers, delivering a one-stop shop for estate agents and home builders. Our goal is to drive efficiency, speed up transactions, reduce risk, and improve the end-customer experience. While we're not a start-up, we have a start-up mindset and want our people to operate with this mindset so that we can achieve our ambitions. We are looking for a contract AI Engineer to build the AI-powered automations that drive demand generation at Alto Software Group. You'll work directly with the Head of AI Operations and Marketing to take a backlog of demand gen automation ideas from design through to production. What You'll Do Build and maintain AI-enabled automation pipelines (n8n, Zapier/Make, direct LLM APIs) that...

We are looking for a Senior Fullstack Mobile Engineer with a strong emphasis on backend architecture to join the team developing a greenfield platform. You will own the end-to-end technical delivery of features, with the majority of your time focused on designing and building a robust, secure, and scalable backend using NestJS, Node.js and TypeScript . On the mobile side, you will contribute to feature integration and deployment within a React Native and Expo environment, ensuring seamless delivery across the full technology stack. The platform operates within a large enterprise technology ecosystem, so this role requires a senior engineer who is comfortable driving technical discussions, making architectural decisions, aligning infrastructure, and collaborating with neighbouring teams working across different technology stacks, including Kotlin and Spring Boot .   This role requires onsite time in Pimlico and sits inside IR35.   Backend...

JAVA DEVELOPER - LONDON - CONTRACT OUTSIDE IR35 - FINTECH WE ARE: At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment managers, fintech, and capital market service providers. With a global reach with offices in London, New York, Barcelona, Manila, and Montreal, we have a proven track record of delivering powerful, elegant, and intuitive trading technology solutions. We are now looking for a Java Developer to provide services on an exciting project! The service provision will require: Solid JVM skills with strong design patterns. Ability to solve complex technical challenges, especially in cloud-based environments and by...

Programme/Product manager with Wealth and credit experience Programme/Product Manager £600-700pd Inside IR35 Initial 6 month engagement 4 days on site emagine is a high-end professional services consultancy and solutions firm specialising in providing business and technology services to the financial services sector, we power progress, solve challenges and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication in delivering the optimal service for our clients. Our commitment is not just towards our clients but we aim to foster a positive and equitable working environment with our consultants and colleagues which stems from our core values: Confident, Dedicated, Responsible, Genuine. We are looking for a program/product manager role, the ideal consultant will have...

Contract - Senior Full Stack Developer Job description Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35) Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte. The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires a solid understanding of Development...

Contract - Full Stack Developer Job description Job Title: Full Stack Developer (contract) Location: London Hybrid. Travel to the London office on 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35) Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte. The Role We are looking for an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires a solid understanding of Development and...

This role is delivered within secure environments. Candidates must be eligible for UK SC and DV clearance and hold UK Citizenship. Opening: Join the Mission At ByDesign Secure, we believe that world-class security shouldn't be an afterthought—it should be the foundation. We are an independent, outputs-based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross-government secure IT system. This is an exciting opportunity to help architect a private cloud environment from the ground up and modernize the end-user services that power national decision-making. We don't believe in "billing by the hour" or rigid hierarchies; we are a lean, expert team focused on delivering high-impact technical outcomes. If you are a self-starter who thrives on autonomy and wants to see your engineering or architectural decisions shape the future of sovereign security, we want to...

£450–£475 per day | Inside IR35 City London Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Consulting   Scrumconnect Consulting is a UK national SME award-winning software development consultancy with over 300 consultants across the UK. We work with UK Public Sector clients to build impactful, award-winning digital services that improve millions of lives.   We take as much pride in our people, culture and work-life balance as we do in making services that improve millions of lives. Collaborative, entrepreneurial and dedicated to problem-solving, we bring the step change our customers need to sustain innovation.   About the Role   We are looking for an experienced Microsoft Dynamics 365 Developer to join a blended delivery team working on a large-scale public sector digital transformation...

Why Keyrus, Why Now! Keyrus is an international group of 2,800 consultants and experts across 28 countries, built on a single conviction: AI does not transform businesses. Architected intelligence does. For more than 30 years, we have been building the data foundations that make intelligent systems work — designing the Operating System of the intelligent enterprise, where intelligence is embedded into the core of business processes to create sustainable value: we operationalise intelligence. AI does not replace humans. It repositions us to a place no system can follow: understanding, deciding, designing, and creating. At Keyrus, you will not just develop skills — you will develop judgment. Your expertise sharpens with every system you architect, every client challenge you solve, and every deployment that compounds on the last. Over time, you grow into one of the rarest professionals of the intelligence era: someone who bridges data, AI, and human...

Company Description Join the world’s largest kdb+ Consultancy where every query matters, every millisecond counts and every system you build shapes the future of data-driven finance. At Data Intellect , we thrive on solving complex data challenges in high-stakes environments. We’re a team of engineers, problem-solvers and collaborators who believe in pushing boundaries, not egos. If you're a proficient kdb+ developer ready to lead, innovate and make an impact, we want to hear from you. Job Description As a Senior kdb+ Engineer at [DI] you’ll be at the forefront of delivering high-performance, scalable solutions for some of the world’s most data-intensive financial institutions. You’ll: Lead technical delivery on client projects, setting the standard for quality and performance. Design and implement robust kdb+ architectures that handle billions of rows of time-series data. Collaborate with quants, traders, and analysts to...

About Voodoo Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo is the #3 mobile publisher worldwide in terms of downloads after Google and Meta. Our portfolio includes chart-topping games like Mob Control and Block Jam, alongside popular apps such as BeReal and Wizz. This position can be fully remote within CET +/-2h. Team Our Gaming team is made up of hybrid-casual, casual, and mid-core experts. Our 'Core' games team supports internal and external studios worldwide in creating, developing, and launching new hit games, whilst our 'Live' games team focuses on delivering higher engagement on our existing and successful games. Joining our Live games team means collaborating with gaming industry experts on globally renowned, enduring games while embracing exciting new entrepreneurial ventures. With over seven...

Java and Azure Developer : Contract Role London, England, United Kingdom WPP is the trusted growth partner for the world’s leading brands.  We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth.    We work with the world's most valuable brands and have global reach across 100+ markets, with deep local expertise.   Our people are the key to our success. We're committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow.    For more information,...

We are urgently looking for an experienced Technical Lead , Hertfordshire ( Contract ) with experience in Postilion development and ATM/payment switching solutions within the banking domain. The successful candidate will provide technical leadership, design and develop enterprise payment solutions, support mission-critical transaction systems, and work closely with cross-functional teams to deliver secure, high-performing banking applications. Key Skills:- 7+ years of experience in Postilion Development within the banking and payments domain. Strong expertise in ANDC, ISO8583, NDC+, D912 message formats, and EMV transaction processing. Hands-on experience with Wincore, JavaScript, and CSS for application development and support. Proven experience in ATM software, payment switching, and financial transaction processing. Ability to lead technical teams, conduct code reviews, and mentor developers on best practices. Experience in designing, developing,...

The Cyber - PAM role primarily focuses on managing access and identity lifecycle processes within the organization, ensuring compliance with regulatory frameworks and effectively supporting business operations through robust analysis and communication. Cyber Business Analyst (PAM) Rate: £500 p/d Inside IR35 Location: London (4 days) emagine is a high-end professional services consultancy and solutions firm specialising in delivering business and technology services to the financial services sector. We power progress, solve complex challenges, and deliver tangible results through tailored consulting and delivery excellence. Our culture is built on openness, integrity, and strong partnerships, underpinned by our core values: Confident, Dedicated, Responsible, Genuine. The Cyber - PAM role primarily focuses on managing access and identity lifecycle processes within the organization, ensuring compliance with regulatory frameworks and effectively supporting...