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218 web application engineer jobs found

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web application engineer
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Contract Spy
May 19, 2026
Hourly/Freelance
Web Application Engineer - AI Trainer at DataAnnotation, Remote, £Hourly Rate
Contract Spy Remote
Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Web Application Engineer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work...
Contract Spy
May 12, 2026
Hourly/Freelance
Web Application Engineer - AI Trainer at DataAnnotation, Remote, £Hourly Rate
Contract Spy Remote
Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Web Application Engineer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work...
Contract Spy
May 05, 2026
Hourly/Freelance
Web Application Engineer - AI Trainer at DataAnnotation, Remote, £Hourly Rate
Contract Spy Remote
Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Web Application Engineer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work...
Contract Spy
Apr 27, 2026
Hourly/Freelance
Web Application Engineer - AI Trainer at DataAnnotation, Remote, £Hourly Rate
Contract Spy Remote
Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Web Application Engineer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work...
Contract Spy
May 22, 2026
Duration not stated
Senior Front End Developer at Bridebook, Remote, £Competitive Day Rate
Contract Spy Remote
Senior Front-End React Developer At Bridebook, we're digitising the wedding industry! Join us in transforming the wedding planning experience for engaged couples around the world. Full-time Contractor · Remote · Competitive Day Rate Who is Bridebook anyway? Bridebook is a revolutionary wedding planning platform that seeks to make wedding planning an enjoyable, intuitive, and rewarding experience for couples, guests, and industry partners. Launched in the UK, Bridebook has over 1,000,000 planning couples and has been featured in major outlets such as the New York Times, the BBC, and the App Store. After seven years and many iterations later, we have 2 in 3 engaged UK couples and 1 in 3 engaged German couples using Bridebook, and have recently expanded into the French and Irish markets. While we serve a very emotional and creative industry, we are disrupting the wedding industry by leveraging cutting-edge technology to provide seamless and...
Contract Spy
May 21, 2026
Duration not stated
Principal Software Engineer at pubGENIUS, Remote, £Competitive Rate
Contract Spy Remote (United Kingdom)
pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals. Beyond client work, we operate our own high-revenue web product with a website, mobile app, and machine learning systems powering our ad-tech optimization engine. Performance is not a preference here, it is a core requirement.   We are looking for a Principal Software Engineer, who will be the technical authority, responsible for all development, architecture decisions, and long-term technical strategy across a website, mobile app, and ML-powered ad-tech optimization systems. This is a full-time independent contractor engagement. You will work hands-on at a senior level where site speed and server performance are core success metrics. You will work directly with...
Contract Spy
May 18, 2026
Duration not stated
Certificate Deployment Engineer - Windows Servers at VE3, Maidenhead, £Contract Rate
Contract Spy Maidenhead, UK
Certificate Deployment Engineer (Contract/Freelance) Maidenhead, United Kingdom | Posted on 18/05/2026 About Us VE3 is a technology and business consultancy focused on delivering end-to-end technology solutions and products. We have successfully serviced enterprises across multiple markets, including the public and private sectors. Our services span all aspects of business, providing a holistic approach to managing an organization. We are committed to providing technical innovations and tools that empower organizations with critical information to facilitate decision-making that results in business transformation through cost savings and increased operational efficiency. Our commitment to quality is adopted throughout the organization and sets the foundation for delivering our full suite of capabilities.     Job Description Certificate Deployment Engineer (Contract/Freelance)   Role Purpose  ...
Contract Spy
May 18, 2026
Duration not stated
Senior Software Engineer (Sports Feed Domain) at pawaTech, United Kingdom, £Contract Rate
Contract Spy United Kingdom
pawaTech is looking for a Senior Software Engineer with passion for teamwork and a collaborative mind. As part of the Sports Feed team, you will be working on integrating sports data from third-party providers, reformatting and distributing that data to different internal systems, and building scalable services that support live event handling across our platform. The team handles one of the most critical parts of our Sportsbook product, ensuring sports content is accurate, timely, and processed under high load.   Compensation range: £5500 - £8000 full contractual monthly pay.   About us: pawaTech is a leading iGaming solutions provider, delivering sportsbook, casino, lottery, and player management software as a service. We power betPawa - Africa’s largest betting brand, operating across multiple markets.   Our platform is designed for scale, handling millions of active users across the web and mobile, processing...
Contract Spy
May 15, 2026
Duration not stated
Senior Front End Developer at Bridebook, Remote, £Competitive Day Rate
Contract Spy Remote
Senior Front-End React Developer At Bridebook, we're digitising the wedding industry! Join us in transforming the wedding planning experience for engaged couples around the world. Full-time Contractor · Remote · Competitive Day Rate Who is Bridebook anyway? Bridebook is a revolutionary wedding planning platform that seeks to make wedding planning an enjoyable, intuitive, and rewarding experience for couples, guests, and industry partners. Launched in the UK, Bridebook has over 1,000,000 planning couples and has been featured in major outlets such as the New York Times, the BBC, and the App Store. After seven years and many iterations later, we have 2 in 3 engaged UK couples and 1 in 3 engaged German couples using Bridebook, and have recently expanded into the French and Irish markets. While we serve a very emotional and creative industry, we are disrupting the wedding industry by leveraging cutting-edge technology to provide seamless and...
Contract Spy
May 14, 2026
Duration not stated
Support Engineer (Level 3) - Microsoft etc at SiXworks, Farnborough, £Contractor Rate
Contract Spy Farnborough, UK
Location Farnborough Employment Type Contractor Work on Technology That Protects What Matters At SiXworks, we build secure digital solutions that support Defence and National Security missions. Our teams work on complex problems where reliability, security, and speed of innovation matter.   We’re looking for a Level 3 Support Engineer who enjoys solving difficult technical challenges and wants their work to have real operational impact.   This role is onsite in Bristol   What You’ll Do As a Level 3 Support Engineer, you’ll support our team to design, build, and deliver secure digital solutions in highly secure environments. You’ll work alongside engineers, architects, and delivery specialists to develop technology that enables faster, safer decision-making for critical operations.   Your work may include: Respond to incoming tickets...
Contract Spy
May 14, 2026
Duration not stated
Principal Software Engineer at pubGENIUS, Remote, £Competitive Rate
Contract Spy Remote (United Kingdom)
pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals. Beyond client work, we operate our own high-revenue web product with a website, mobile app, and machine learning systems powering our ad-tech optimization engine. Performance is not a preference here, it is a core requirement.   We are looking for a Principal Software Engineer, who will be the technical authority, responsible for all development, architecture decisions, and long-term technical strategy across a website, mobile app, and ML-powered ad-tech optimization systems. This is a full-time independent contractor engagement. You will work hands-on at a senior level where site speed and server performance are core success metrics. You will work directly with...
Contract Spy
May 08, 2026
Duration not stated
Software Deployment Engineer at Mindera, Bracknell, £Competitive Day Rate (Outside IR35(
Contract Spy Bracknell, UK
Software Deployment Engineer - Contract - Outside IR35 About the job 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...
Contract Spy
May 08, 2026
Duration not stated
Flutter Developer at Saible, UK/Hybrid, £400 per day
£400 per day
Contract Spy Hybrid (UK)
UK BASED APPLICANTS ONLY PLEASE   NO RECRUITERS THANK YOU   Company Overview Saible is transforming the way payments are made in the construction industry, addressing the insolvency and mental health crises in the sector. We are on a journey of rapid growth and innovation in the FinTech space.   Values These are the core values we uphold here at Saible. If they resonate with you, we might be the right fit:   Trusting & trustworthy – living our lives based on ethics, fairness, inclusion and respect. Focused – driven to solve real-world problems. Collaborative – diversify our thinking to create the best solutions. Responsible – creating a product and company that has a positive impact on society and the planet. Have fun - life’s too short not to.   Job Summary We have a small, experienced engineering team (one back end, one front end, one DevOps, one UX). We...
Contract Spy
May 08, 2026
Duration not stated
Senior Front End Developer at Bridebook, Remote, £Competitive Day Rate
Contract Spy Remote
Senior Front-End React Developer At Bridebook, we're digitising the wedding industry! Join us in transforming the wedding planning experience for engaged couples around the world. Full-time Contractor · Remote · Competitive Day Rate Who is Bridebook anyway? Bridebook is a revolutionary wedding planning platform that seeks to make wedding planning an enjoyable, intuitive, and rewarding experience for couples, guests, and industry partners. Launched in the UK, Bridebook has over 1,000,000 planning couples and has been featured in major outlets such as the New York Times, the BBC, and the App Store. After seven years and many iterations later, we have 2 in 3 engaged UK couples and 1 in 3 engaged German couples using Bridebook, and have recently expanded into the French and Irish markets. While we serve a very emotional and creative industry, we are disrupting the wedding industry by leveraging cutting-edge technology to provide seamless and...
Contract Spy
May 07, 2026
Duration not stated
Principal Software Engineer at pubGENIUS, Remote, £Competitive Rate
Contract Spy Remote
pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals. Beyond client work, we operate our own high-revenue web product with a website, mobile app, and machine learning systems powering our ad-tech optimization engine. Performance is not a preference here, it is a core requirement.   We are looking for a Principal Software Engineer, who will be the technical authority, responsible for all development, architecture decisions, and long-term technical strategy across a website, mobile app, and ML-powered ad-tech optimization systems. This is a full-time independent contractor engagement. You will work hands-on at a senior level where site speed and server performance are core success metrics. You will work directly with...
Contract Spy
Apr 30, 2026
Duration not stated
Senior Front End Developer at Bridebook, Remote, £Competitive Day Rate
Contract Spy Remote
Senior Front-End React Developer At Bridebook, we're digitising the wedding industry! Join us in transforming the wedding planning experience for engaged couples around the world. Full-time Contractor · Remote · Competitive Day Rate Who is Bridebook anyway? Bridebook is a revolutionary wedding planning platform that seeks to make wedding planning an enjoyable, intuitive, and rewarding experience for couples, guests, and industry partners. Launched in the UK, Bridebook has over 1,000,000 planning couples and has been featured in major outlets such as the New York Times, the BBC, and the App Store. After seven years and many iterations later, we have 2 in 3 engaged UK couples and 1 in 3 engaged German couples using Bridebook, and have recently expanded into the French and Irish markets. While we serve a very emotional and creative industry, we are disrupting the wedding industry by leveraging cutting-edge technology to provide seamless and...
Contract Spy
May 22, 2026
Duration not stated
Full Stack Engineer at Credera, London, £Contract Rate
Contract Spy London, UK
Contract, Full Stack Engineer Description Would you like to be part of a fast-growing technology and engineering organization that nurtures an open, collaborative learning environment? Are you passionate about technology, people, and developing your coding skills? If this describes you, we’re trying to create the best engineering consultancy in the UK and would love for you to be part of the journey.  We recognize that great talent comes in many forms and welcome conversations about part-time or flexible working arrangements for this role. We draw on our reputation for outstanding delivery to allow our engineers to do the right thing for our clients. Our engineers take a holistic approach that addresses technology, process, and structure to make a lasting impact. We work collaboratively with users to create minimum viable products that are truly ready for use.   Key Responsibilities: Design, build, and maintain internal applications...
Contract Spy
May 22, 2026
Duration not stated
Senior Solutions Architect - Customer Care at The Very Group, Liverpool, £Contract Rate
Contract Spy Liverpool, UK
Senior Solutions Architect - Customer Care (Contract role Inside IR35) About us We’re the team behind digital retailer Very. Our purpose, helping families get more out of life, powers everything we do. And we want our people to get more out of life too! If you’re high-performing, ambitious and make the most of every opportunity, we want to hear from you. In return, you’ll enjoy heaps of flexibility, great perks and benefits, and the freedom to be yourself, keep learning and take your career wherever you want it to go. If you love making a difference, you’ll love making it sparkle for millions of Very customers. ✨ About the Team At The Very Group, customer care is at the heart of everything we do, combining knowledgeable, empathetic support with fast, reliable resolutions across all channels. The Customer Care (CC) Performance Unit is responsible for designing, building, changing and running technology across all our customer facing...
Contract Spy
May 22, 2026
6 Months or more
Business Analyst at Mindera, UK, 6 Months initial, £Contract Rate (Outside IR35)
Contract Spy UK
Business Analyst Content Strategy, Contentful & Headless CMS We’re looking for an experienced Business Analyst to join our Content Domain team and help shape the next phase of our headless content platform evolution. This is a hybrid strategic and delivery-focused role, combining business analysis, structured content modelling and content system enablement. You’ll help evolve the organisation from a centralised “content gatekeeper” model to a scalable, self-service approach that enables Product, UX and Engineering teams to move faster with greater consistency, confidence and reuse. Working closely with Product, Experience Design, Engineering and Platform teams, you’ll help define scalable, reusable and API-ready content structures that support modern digital experiences across multiple channels and touchpoints.   Over the past year, we’ve made significant progress adopting a headless CMS approach using Contentful,...
Contract Spy
May 22, 2026
Duration not stated
.NET Engineer (Fullstack) at Korn Ferry, London, £Contract Rate
Contract Spy London, UK
Full Stack Engineer - .NET & Azure Location: London, UK Working Mode: 1-2 days on site per week   Description We're looking for a Full Stack Engineer - .NET & Azure to join our team in London, UK in a hybrid working mode. In this role, you will develop modern applications and services as part of a digital transformation journey, focusing on the modernization of legacy systems. You will work closely with the Legacy Modernization team to build new modular applications, leverage Azure services and API integration, and design future-ready solutions that enhance business processes while maintaining reliability and scalability.   Responsibilities Full Stack Development: Design, develop, and maintain applications using .NET (C#) across front-end and back-end components Azure Logic Apps & Functions: Build and integrate workflows using Azure Logic Apps and serverless computing via Azure Functions API Integration: Implement secure...
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