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42 web application engineer jobs found

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web application engineer Greater London
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Contract Spy
Mar 13, 2026
Duration not stated
Software Deployment Engineer - Contract - Outside IR35 at minderacraft, London, £Competitive Day Rate
Contract Spy London, UK
Mindera are currently looking for a Software Deployment Engineer to deliver, configure, test, and roll out software and device solutions across multiple environments. You'll work closely with software engineers, product teams, and platform specialists to ensure seamless deployments that support millions of customers and thousands of colleagues. This role is perfect for someone who enjoys hands-on deployment, automation, configuration, testing, and troubleshooting across a wide technology landscape. This is a hybrid position where you will be expected to be onsite in Bracknell 3 days per week. Requirements Deployment & Configuration (Primary Focus) • Deploy application releases across Dev, Test, UAT, Pre-Prod, and Production environments. • Configure applications, services, and devices according to environment needs. • Automate deployment activities through CI/CD pipelines and scripting. • Manage deployment schedules, releases, and...
Contract Spy
Mar 13, 2026
Duration not stated
Front End Developer at Sunny Art Centre, London WC2B 4AN, £20 an hour
Contract Spy London WC2B 4AN, UK
Remote (During Lockdown) In-House Creative Team 16 Hours per Week £20 per Hour Sunny Art Centre is seeking a highly skilled Part-Time Freelance Front-End Developer to join our in-house creative team as soon as possible (working remotely during lockdown). This role is ideal for an experienced developer with a strong eye for UI/UX design, performance optimisation, and interactive user experience . We require a minimum of 5 years’ professional experience as a Web Developer, UI Developer, JavaScript Expert, or Front-End Engineer across commercial or open-source projects. How to Apply If you believe you are the ideal candidate, please apply with: Your CV Live links to previous web commissions demonstrating your suitability for this role Applications without portfolio links WILL NOT be considered. Links may be included directly in: Your CV, or Your Indeed cover letter section...
Contract Spy
Mar 09, 2026
Duration not stated
Full Stack Developer at School Prom Car Hire, Surbiton KT6 7NA, £Contract Rate
Contract Spy Hook Rise S, Surbiton KT6 7NA, UK
About School Prom Car Hire School Prom Car Hire is a premium luxury transport and travel platform operating across the UK and internationally. We specialise in limousine hire, yacht charters, private aviation, chauffeur services, airport transfers, and high-end event transport. Our growth strategy is built on technical excellence, search dominance, automation, and scalable digital infrastructure. We are hiring a Senior Full-Stack Web Developer who understands how engineering decisions directly impact SEO performance, scalability, and long-term growth. The Role This position requires a true full-stack engineer — not just a WordPress developer. You will take ownership of our entire digital ecosystem, ensuring it is technically sound, search-optimised, secure, automated, and built for algorithm resilience. What You’ll Be Responsible For Full-Stack Development Front-end and back-end development Building scalable web applications Working across...
Contract Spy
Feb 25, 2026
Duration not stated
iOS Engineer at Beyond Sports, London, £400-£500 per day (Outside IR35)
£400 - £500 per day
Contract Spy London, UK
iOS Engineer - Contract (Outside of IR35) As an iOS Developer, you will have the opportunity to build and lead solutions that engage millions of sports fans worldwide. Working with a wide range of data sources and native technologies, building bespoke UI experiences for sports fans. At Pulselive, we pride ourselves in providing a collaborative environment that ensures we produce leading products across web and native applications. Contractor Outside of IR35 Day Rate: £400 - £500 per day   Responsibilities Being a self-sufficient individual contributor, breaking down work into manageable pieces, calling out blockers and dependencies and delivering solution in a timely manner Managing code releases to internal environments (dev, test); may also need to manage code release to external environments (production) Producing code to a high standard that not only functions correctly but...
Contract Spy
Mar 16, 2026
6 Months or more
AI-First Full Stack Developer at ISTARI, London, 6 Months initial, £500–700 per day
£500 - £700 per day
Contract Spy London Area, United Kingdom
About Us: ISTARI is a strategic cybersecurity advisory company with a bold vision; to curate the defining cybersecurity ecosystem of our time, uniting enterprise, academia, government, and innovators to build collective resilience. At the heart of this mission, ISTARI helps clients achieve lasting organisational cyber resilience by convening and applying world-class talent, expertise, and innovation through a uniquely powerful network, with ISTARI as the central orchestrator. ─────────────────────────────────────────────────────── The Opportunity: We are seeking an entrepreneurial, AI-native developer to join ISTARI as a contract developer and help transform how we deliver our consulting work. You will be the founding technical resource responsible for building a suite of AI-powered internal tools that dramatically improve productivity across our Advisory practice.   This is not a traditional development role. You will be expected to leverage AI coding...
Contract Spy
Mar 16, 2026
Duration not stated
Senior Solidity Engineer at Test Yantra Software Solutions Private Limited, London, £400 per day
£400 per day
Contract Spy London, UK
Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial instruments and systems. Bonus...
Contract Spy
Mar 16, 2026
Duration not stated
Application Security Consultant at Handelsbanken Plc, London, 6 Months, £Competitive Rate
Contract Spy London, UK
Application Security Consultant - 6M Contract Job Introduction We are seeking a versatile and proactive 'Application Security Consultant ' ' to join Handelsbanken UK which is currently undergoing a major technology transformation programme. We are modernising our tech stack whilst preserving trust and security. You will act as the security lead in an application development delivery team working across a complex hybrid tech stack including Java/React, J2EE microservices, RPG/JSP hosted on z/OS and an API driven architecture. A key focus of this role will involve uplifting our application development security processes to enable the team to deliver quickly and securely. You will operate our existing secure change process whilst helping revise and uplift the application development security assurance operating model. Your work will cover metrics, templates, controls, automation, secure code practices and workflows. The Bank operates an model where information security...
Contract Spy
Mar 16, 2026
Duration not stated
Full Stack Developer at School Prom Car Hire, London, £Contract Rate
Contract Spy London, UK
About School Prom Car Hire School Prom Car Hire is a premium luxury transport and travel platform operating across the UK and internationally. We specialise in limousine hire, yacht charters, private aviation, chauffeur services, airport transfers, and high-end event transport. Our growth strategy is built on technical excellence, search dominance, automation, and scalable digital infrastructure. We are hiring a Senior Full-Stack Web Developer who understands how engineering decisions directly impact SEO performance, scalability, and long-term growth. The Role This position requires a true full-stack engineer — not just a WordPress developer. You will take ownership of our entire digital ecosystem, ensuring it is technically sound, search-optimised, secure, automated, and built for algorithm resilience. What You’ll Be Responsible For Full-Stack Development Front-end and back-end development Building scalable web applications...
Contract Spy
Mar 13, 2026
Duration not stated
Contract - FDI Architect at Deloitte, London, £Contract Rate
Contract Spy London, UK
Basic information Location London Business Line Technology & Transformation Job Type Contract Date published 05-Feb-2026 Req # 22167 Job description Job Title: FDI Architect (Contract) Location Hybrid: London Target Start Date: ASAP Contract duration : 6 months Day Rate: Competitive (Inside IR35) Must be eligible for SC Clearance 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. About the Project We are seeking an experienced Oracle Fusion Data Intelligence (FDI) Architect to design,...
Contract Spy
Mar 12, 2026
Duration not stated
Contract - Senior Full Stack Developer at Deloitte, London, £Contract Rate
Contract Spy London, UK
Basic information Location London Business Line Technology & Transformation Job Type Contract Date published 11-Mar-2026 Req # 22635 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....
Contract Spy
Mar 12, 2026
Duration not stated
Contract - Full Stack Developer at Deloitte, London, £Contract Rate
Contract Spy London, UK
Basic information Location London Business Line Technology & Transformation Job Type Contract Date published 11-Mar-2026 Req # 22634 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....
Contract Spy
Mar 12, 2026
Duration not stated
DevOps Engineer (Contract) at Eventogy, London, £Contract Rate
Contract Spy London, UK
Location: Farringdon, London (on-site Tuesday–Thursday) Type: Contract (term negotiable) Sponsorship: Not available – applicants must already have the right to work in the UK About Us At Eventogy, our mission is to be the trusted technology partner for corporate event professionals everywhere—innovating the future of events with integrity and courage. We are a character-driven team, united by our ambition to deliver excellence. As an ISO 27001 and Cyber Essentials–certified SaaS provider , we deliver secure, scalable event management platforms to some of the world’s leading banks, law firms, and enterprise clients. Our products are built on a modern AWS-hosted architecture , spanning PHP (CodeIgniter / Laravel) and JavaScript applications. We’re now looking for a DevOps Engineer (Contract) to help strengthen our cloud infrastructure, improve automation and reliability, and evolve our deployment and monitoring practices. The Role...
Contract Spy
Mar 12, 2026
Duration not stated
Solutions Architect (Contract) at AND Digital, London, £Contract Rate
Contract Spy London, UK
We are recruiting for a Contract Solutions Architect. The role is hybrid, 2 days per week onsite in London (Paddington). These roles are an immediate start until the end of June. Who We Are: AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We’ve been helping organisations build better digital products and stronger digital teams since 2014. We believe our work should always make a remarkable impact for our clients. We do this through our regional offices (or ‘Clubs’) building strong relationships with our partners, so that they are always prioritised by a team within close proximity. This unique model has driven success for our clients and ourselves, evidenced by our remarkable organic growth since 2014. Today we number more than 1,300 people with Clubs all over the UK, Europe and the USA with plans for global expansion in the next couple of years. Join us - and help us fulfil our...
Contract Spy
Mar 12, 2026
Duration not stated
AI-Enabled Fullstack Developer at Future Works, London, £Contract Rate
Contract Spy London, UK
Description Future Works is searching for a results-driven, AI-Enabled Fullstack Engineer with strong end-to-end experience building custom software solutions. In this role, you will own the development and delivery of scalable, production-grade applications, from architecture through deployment, ensuring solutions are aligned with client requirements and business objectives. Working within an agentic engineering environment, you will collaborate closely with product managers, designers, and stakeholders to translate business goals into robust technical implementations. By leveraging modern AI-assisted development tools, you will increase the speed and quality of delivery while maintaining strong engineering standards and architectural discipline. What You’ll Do Design and build production-grade applications with React and Next.js Translate product and client requirements into structured implementation plans Use AI tools (e.g., Cursor, Claude Code,...
Contract Spy
Mar 12, 2026
Duration not stated
Contract - Senior Cloud Engineer at Deloitte, London, £Contract Rate
Contract Spy London, UK
Basic information Location London Business Line Technology & Transformation Job Type Contract Date published 11-Mar-2026 Req # 22638 Job description Job Title: Senior Cloud Engineer (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....
Contract Spy
Mar 11, 2026
Duration not stated
Software engineer (JAVA , Python , Golang) at Test Yantra Software Solutions Private Limited, London, £350-£370 per day
£350 - £370 per day
Contract Spy London, UK
We are urgently looking for experienced candidates with strong hands-on Java development skills and design experience. While an architect title is not mandatory, we are particularly interested in profiles of senior developers with solid technical expertise. Required Core Skills: - Java - Python - GoLang -Design, develop, and maintain high-quality Java applications. -Write clean, efficient, and well-documented code. -Perform code reviews and optimize existing codebases. -Ensure application performance and reliability. -Develop and maintain automated tests to ensure code quality. -Work with CI/CD pipelines to streamline the development and deployment process. Job Types: Full-time, Freelance Pay: £350.00-£370.00 per day Schedule: Monday to Friday Experience: Java: 7 years (required) Python: 3 years (required) Go: 2 years (required)
Contract Spy
Mar 11, 2026
Duration not stated
Cloud Architect - Contract UK at Satalia, London N1 9PP, £Contract Rate
Contract Spy White Lion St, London N1 9PP, UK
Cloud Architect Role type: Contract 6 months + Location: London/Remote Cloud Architect required to join our Engineering team here at Satalia As an organisation, we push the boundaries of data science, optimisation and artificial intelligence to solve the most complex problems in the industry. Satalia, a WPP company is a community of individuals devoted to working on diverse and challenging projects, allowing you to flex your technical skills whilst working with a tight-knit team of high performing colleagues. Led by our founder and WPP Chief AI Officer Daniel Hulme, Satalia’s ambition is to become a decentralised organisation of the future. Today, this involves developing tools and processes to liberate and automate manual repetitive tasks, with a focus on freedom, transparency and trust. At the core of our thinking is an approach to wellbeing and inclusivity. We unpack human behaviour and unpick prejudice to ensure a safe and inviting...
Contract Spy
Mar 10, 2026
6 Months or more
Contract - AI Engineer at Deloitte, London, 6 Months, £Contract Rate
Contract Spy London, UK
Basic information Location London Business Line Tax & Legal Job Type Contract Date published 09-Feb-2026 Req # 22184 Job description   Job Title:  AI Engineer (contract) Location:  London Hybrid. Travel to the London office 2 days a week Duration:  6 months Contract Start Date:  March 2026   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 a  AI Engineer  to join...
Contract Spy
Mar 10, 2026
Duration not stated
Research Engineer - Machine Learning (Contractor) at Huawei, London, £Contractor Rate
Contract Spy London, UK
About Huawei Research and Development UK Limited Founded in 1987, Huawei is a leading global provider of information and communications technology (ICT) infrastructure and smart devices. We have 207,000 employees and operate in over 170 countries and regions, serving more than three billion people around the world. Our vision and mission is to bring digital to every person, home and organization for a fully connected, intelligent world. To this end, we will drive ubiquitous connectivity and promote equal access to networks; bring cloud and artificial intelligence to all four corners of the earth to provide superior computing power where you need it, when you need it; build digital platforms to help all industries and organizations become more agile, efficient, and dynamic; redefine user experience with AI, making it more personalized for people in all aspects of their life, whether they’re at home, in the office, or on the go. This spirit of innovation has...
Contract Spy
Mar 10, 2026
Duration not stated
Unity Engineer, Music (Contractor) at Duolingo, London, £Contract Rate
Contract Spy London, UK
Our mission at Duolingo is to develop the best education in the world and make it universally available. But we've got more left to do — and that's where you come in! With over 500 million users, Duolingo is the world's most popular language learning platform. We are rapidly growing our learner base and expanding into new subjects. Come join our Music team and help us build the future of music education. We are looking for a Unity engineer with a gaming background to help us implement our new music course and productionize our existing prototype. You will help build the best possible user experience for our learners through high-quality interactive lessons. Beyond our core learning product, we also offer English proficiency testing with the Duolingo English Test, and are bringing new subjects into the Duolingo app, where people can develop their Math and Music skills. We are passionate about educating our users, making fact-based decisions, and finding innovative...
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