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18 web application engineer jobs found

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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 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
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
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 21, 2026
Duration not stated
Software Test Engineer QA at YO IT CONSULTING, Remote, £Contract Rate
Contract Spy Remote
Partnering with a top AI research organization to evaluate and improve how coding assistants reason, act, and communicate during development workflows. We’re seeking technically sharp experts (especially those with experience in code review, testing, or documentation) to assess full transcripts of user–AI coding conversations. This short-term engagement helps shape the future of developer-assisting AI systems. Key Responsibilities Review long-form transcripts between users and AI coding assistants Analyze the AI’s logic, execution, and stated actions in detail Score each transcript using a 10-point rubric across multiple criteria Optionally write brief justifications citing examples from the dialogue Detect mismatches between claims and actions (e.g., saying “I’ll run tests” but not doing so) Ideal Qualifications Top choices: Senior or Staff Engineers with deep code review experience and execution insight QA Engineers...
Contract Spy
May 20, 2026
Duration not stated
Principal Engineer (AI & .NET) at xDesign, Remote/Edinburgh, £Contract Rate
Contract Spy Remote (Edinburgh, UK)
Principal Engineer - Contract Role Overview We are seeking an experienced Principal AI .NET Engineer to partner with client engineering teams in transforming software delivery through AI-assisted engineering, intelligent automation, and modern software development practices. This role combines deep technical expertise with strategic advisory and coaching responsibilities, helping organizations improve software quality, delivery cadence, and engineering effectiveness across the Software Development Lifecycle (SDLC). The successful candidate will assess existing engineering practices, architecture, tooling, and delivery processes to identify opportunities for enhancement—particularly through the adoption of AI-driven development workflows, agent-based engineering, automation, and modern DevOps practices. You will work closely with engineering leaders, architects, and delivery teams to implement scalable improvements that accelerate delivery while strengthening quality,...
Contract Spy
May 20, 2026
Duration not stated
Independent Contractor - Technical Level Designer/Gameplay Programmer at Dandylion Games Ltd, Remote, £Contract Rate
Contract Spy Remote
Overview Are you looking for an opportunity to contribute to a new UK-based indie start-up? This is a royalty-upon-release independent contractor opportunity, ideal for individuals looking to expand their portfolio by contributing to an in-development title. Role type Independent contractor (not employment, not an internship) Remote Work is delivered on a milestone / agreed deliverables basis. You manage your own time to meet agreed milestones and attend essential check-in meetings. What we’re looking for Individuals comfortable working as an independent contractor, delivering agreed services to the project on a milestone/deliverables basis A technically minded contributor with experience in game development, programming, scripting, or technical level design Someone able to support both gameplay implementation and level/encounter setup Experience working with game engines, preferably Unreal Engine Understanding of Blueprint...
Contract Spy
May 14, 2026
Duration not stated
Site Reliability Engineer at TwinStream, Remote, £500-£6O0 per day (Outside IR35)
£500 - £600 per day
Contract Spy Remote
Site Reliability Engineer (Contract outside of IR35) About Us   In 2019, the founders were working as engineers solving complex cross-domain problems within government organisations.   TwinStream was formed to bring together their collective expertise and experience into a single business, focused on delivering technical excellence and high-quality service to clients.   Since then, the company has grown to over 100 team members across the UK, with colleagues working both on-site with clients,  hybrid  and remotely from home.     Rate: £500 - £600 DOE (outside of IR35) Location: Remote       About the role:   Our cross-domain services are used in high-profile government organisations. The demand for these services continues to grow in both scope and scale. We are seeking an experienced Site Reliability Engineer to help satisfy that demand....
Contract Spy
May 14, 2026
Duration not stated
Software Test Engineer QA at YO IT CONSULTING, Remote, £Contractor Rate
Contract Spy Remote
Partnering with a top AI research organization to evaluate and improve how coding assistants reason, act, and communicate during development workflows. We’re seeking technically sharp experts (especially those with experience in code review, testing, or documentation) to assess full transcripts of user–AI coding conversations. This short-term engagement helps shape the future of developer-assisting AI systems. Key Responsibilities Review long-form transcripts between users and AI coding assistants Analyze the AI’s logic, execution, and stated actions in detail Score each transcript using a 10-point rubric across multiple criteria Optionally write brief justifications citing examples from the dialogue Detect mismatches between claims and actions (e.g., saying “I’ll run tests” but not doing so) Ideal Qualifications Top choices: Senior or Staff Engineers with deep code review...
Contract Spy
May 13, 2026
Duration not stated
Technical Level Designer/Gameplay Programmer at Dandylion Games Ltd, Remote, £Contractor Rate
Contract Spy Remote
Overview Are you looking for an opportunity to contribute to a new UK-based indie start-up? This is a royalty-upon-release independent contractor opportunity, ideal for individuals looking to expand their portfolio by contributing to an in-development title. Role type Independent contractor (not employment, not an internship) Remote Work is delivered on a milestone / agreed deliverables basis. You manage your own time to meet agreed milestones and attend essential check-in meetings. What we’re looking for Individuals comfortable working as an independent contractor, delivering agreed services to the project on a milestone/deliverables basis A technically minded contributor with experience in game development, programming, scripting, or technical level design Someone able to support both gameplay implementation and level/encounter setup Experience working with game engines, preferably Unreal Engine Understanding of Blueprint scripting,...
Contract Spy
May 12, 2026
Duration not stated
Technical Business Analyst - Cloud at WWT EMEA UK LIMITED, City of London, £600 per day
£600 per day
Contract Spy Remote (City of London, London, UK)
World Wide Technology (WWT) is a global technology integrator and supply chain solutions provider. Through our culture of innovation, we inspire, build, and deliver business results, from idea to outcome. World Wide Technology EMEA. has an opportunity available for a highly skilled Technical Business Analyst (BA) with strong cybersecurity domain expertise to support the design, implementation, and optimization of Cloud-Native Application Protection Platform capabilities. The role bridges business needs and technical delivery by working closely with engineering, cloud, and security stakeholders to define requirements, drive agile delivery, and ensure high-quality solutions. Key Responsibilities Lead requirement gathering and analysis by collaborating with stakeholders including Architects, Cloud & Container Engineers, Capability Leads, and Control Owners to document both functional and non-functional requirements. Define, refine, and prioritize epics, features,...
Contract Spy
May 08, 2026
Duration not stated
Senior Software Engineer – Full-Stack Infra/3D Algorithms at Oqcam, Remote, £Freelance Rate
Contract Spy Remote
Oqcam is redefining how dental laboratories organize and execute their production. Oqcam delivers best-in-class dental lab software to automate and simplify digital production, while giving dental lab leaders peace-of-mind. We build scalable, modern cloud applications used by customers around the world, making optimal use of both AI and logic. We are looking for a Senior Software Engineer – Full-Stack / Infra / 3D Algorithms to join our engineering team. Traditionally, a lot of manpower and time is used to prepare and organize the digital production in a dental lab (3D Printing, CNC milling, …). The preparation work is technical and patient-specific, yet repetitive in nature, and typically performed by dental technicians that are increasingly hard to recruit. With the dental market requesting shorter delivery terms and ever-increasing flexibility, and government regulations increasing at the same time, dental labs are under stress and hindered in their growth....
Contract Spy
May 06, 2026
Duration not stated
Technical Level Designer/Gameplay Programmer at Dandylion Games Ltd, Remote, £Contractor Rate
Contract Spy Remote
Overview Are you looking for an opportunity to contribute to a new UK-based indie start-up? This is a royalty-upon-release independent contractor opportunity, ideal for individuals looking to expand their portfolio by contributing to an in-development title. Role type Independent contractor (not employment, not an internship) Remote Work is delivered on a milestone / agreed deliverables basis. You manage your own time to meet agreed milestones and attend essential check-in meetings. What we’re looking for Individuals comfortable working as an independent contractor, delivering agreed services to the project on a milestone/deliverables basis A technically minded contributor with experience in game development, programming, scripting, or technical level design Someone able to support both gameplay implementation and level/encounter setup Experience working with game engines, preferably Unreal Engine Understanding of Blueprint...
Contract Spy
May 05, 2026
Duration not stated
Technical Business Analyst - Cloud at WWT EMEA UK LIMITED, City of London, £600 per day
£600 per day
Contract Spy Remote (City of London, London, UK)
World Wide Technology (WWT) is a global technology integrator and supply chain solutions provider. Through our culture of innovation, we inspire, build, and deliver business results, from idea to outcome. World Wide Technology EMEA. has an opportunity available for a highly skilled Technical Business Analyst (BA) with strong cybersecurity domain expertise to support the design, implementation, and optimization of Cloud-Native Application Protection Platform capabilities. The role bridges business needs and technical delivery by working closely with engineering, cloud, and security stakeholders to define requirements, drive agile delivery, and ensure high-quality solutions. Key Responsibilities Lead requirement gathering and analysis by collaborating with stakeholders including Architects, Cloud & Container Engineers, Capability Leads, and Control Owners to document both functional and non-functional requirements. Define, refine, and prioritize epics, features,...
Contract Spy
Apr 29, 2026
Duration not stated
Software Test Engineer QA at YO IT Consulting, Remote, £Contractor Rate
Contract Spy Remote
Full job description Partnering with a top AI research organization to evaluate and improve how coding assistants reason, act, and communicate during development workflows. We’re seeking technically sharp experts (especially those with experience in code review, testing, or documentation) to assess full transcripts of user–AI coding conversations. This short-term engagement helps shape the future of developer-assisting AI systems. Key Responsibilities Review long-form transcripts between users and AI coding assistants Analyze the AI’s logic, execution, and stated actions in detail Score each transcript using a 10-point rubric across multiple criteria Optionally write brief justifications citing examples from the dialogue Detect mismatches between claims and actions (e.g., saying “I’ll run tests” but not doing so) Ideal Qualifications Top choices: Senior or Staff...
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