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116 web application engineer jobs found

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Contract Spy
Jan 02, 2026
Duration not stated
Senior Software Engineer at Attikas, Bracknell, £Competitive Rate (Outside IR35)
Contract Spy Bracknell, England, United Kingdom
Company Description Attikas excels in empowering businesses and individuals to reach their highest potential through software consulting, software development, and business analytics services. We have provided support for organizations in diverse sectors, including manufacturing, sports, finance, insurance, retail, energy, public safety, multimedia, and design. At Attikas, we are driven by the passion to drive meaningful change and impact millions of lives worldwide. Joining our team means being part of a mission to make a positive difference globally.   Role Description We are seeking an experienced Senior Software Engineer to lead the rebuild and migration of an existing application as a new application. You will be responsible for delivering a modern, secure, and scalable web application that aligns with our technology standards and GOV.UK design principles. The role involves working closely with our Product Manager and stakeholders to ensure a seamless...
Contract Spy
Jan 02, 2026
Duration not stated
Frontend Engineer at Gendo, London, £400-£650 per day
£400 - £650 per day
Contract Spy London, UK
About Gendo Gendo is a revolutionary, browser-based AI platform designed to empower architects and designers to generate accurate, high-quality visual representations of their designs in seconds, not days - a huge improvement on existing workflows. Within just 12 months of launching, we have 62,000+ architects and designers using Gendo to produce visualizations 100x faster than traditional workflows. We pride ourselves on being a lean, focussed and efficient team formed of highly talented individuals. This, and our product driven mantra, led to us securing both substantial pre-seed-stage and seed-stage funding from renowned investors within the space, enabling us to expand our team and deliver on our ambitious vision. What we value At Gendo, design is our core mission. We believe in the power of tools to elevate creative expression and push the boundaries of architectural possibility. We don't build in a vacuum. We have refined our technology in direct...
Contract Spy
Dec 30, 2025
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
Dec 23, 2025
Duration not stated
Frontend Engineer at Gendo, London, £400-£650 per day
£400 - £650 per day
Contract Spy London, UK
About Gendo Gendo is a revolutionary, browser-based AI platform designed to empower architects and designers to generate accurate, high-quality visual representations of their designs in seconds, not days - a huge improvement on existing workflows. Within just 12 months of launching, we have 62,000+ architects and designers using Gendo to produce visualizations 100x faster than traditional workflows. We pride ourselves on being a lean, focussed and efficient team formed of highly talented individuals. This, and our product driven mantra, led to us securing both substantial pre-seed-stage and seed-stage funding from renowned investors within the space, enabling us to expand our team and deliver on our ambitious vision. What we value At Gendo, design is our core mission. We believe in the power of tools to elevate creative expression and push the boundaries of architectural possibility. We don't build in a vacuum. We have refined our technology in direct...
Contract Spy
Dec 19, 2025
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
Dec 18, 2025
Duration not stated
Front End Engineer at hedgehog lab, Newcastle Upon Tyne, £Contract Rate (Outside IR35)
Contract Spy Newcastle Upon Tyne, England, United Kingdom
Type: Contract (outside IR35) Location: UK-based (flexible home, office, or hybrid working) Office locations: Newcastle and Leeds Hub locations: Edinburgh, Manchester, London We’re growing our Engineering team to strengthen our ability to deliver world-class digital products for our clients. As a Front End Engineer, you’ll join cross-functional teams delivering modern web experiences for a variety of client projects, including fast-paced builds where we value curiosity, pragmatism, and collaboration. You’ll work closely with design and product to bring interfaces to life, and you’ll learn from experienced engineers around you. This is a great role for someone who enjoys building high-quality UI, improving their craft, and contributing to real client outcomes. What you’ll do Build responsive, accessible user interfaces for web applications. Work with designers and product teammates to deliver great user experiences....
Contract Spy
Dec 18, 2025
Duration not stated
Front End Engineer at hedgehog lab, Manchester, £Contract Rate (Outside IR35)
Contract Spy Manchester, England, United Kingdom
Type: Contract (outside IR35) Location: UK-based (flexible home, office, or hybrid working) Office locations: Newcastle and Leeds Hub locations: Edinburgh, Manchester, London We’re growing our Engineering team to strengthen our ability to deliver world-class digital products for our clients. As a Front End Engineer, you’ll join cross-functional teams delivering modern web experiences for a variety of client projects, including fast-paced builds where we value curiosity, pragmatism, and collaboration. You’ll work closely with design and product to bring interfaces to life, and you’ll learn from experienced engineers around you. This is a great role for someone who enjoys building high-quality UI, improving their craft, and contributing to real client outcomes. What you’ll do Build responsive, accessible user interfaces for web applications. Work with designers and product teammates to deliver great user experiences....
Contract Spy
Dec 18, 2025
Duration not stated
Front End Engineer at hedgehog lab, Edinburgh, £Contract Rate (Outside IR35)
Contract Spy Edinburgh, Scotland, United Kingdom
Type: Contract (outside IR35) Location: UK-based (flexible home, office, or hybrid working) Office locations: Newcastle and Leeds Hub locations: Edinburgh, Manchester, London We’re growing our Engineering team to strengthen our ability to deliver world-class digital products for our clients. As a Front End Engineer, you’ll join cross-functional teams delivering modern web experiences for a variety of client projects, including fast-paced builds where we value curiosity, pragmatism, and collaboration. You’ll work closely with design and product to bring interfaces to life, and you’ll learn from experienced engineers around you. This is a great role for someone who enjoys building high-quality UI, improving their craft, and contributing to real client outcomes. What you’ll do Build responsive, accessible user interfaces for web applications. Work with designers and product teammates to deliver great user experiences....
Contract Spy
Dec 18, 2025
Duration not stated
Front End Engineer at hedgehog lab, London, £Contract Rate (Outside IR35)
Contract Spy London, England, United Kingdom
Type: Contract (outside IR35) Location: UK-based (flexible home, office, or hybrid working) Office locations: Newcastle and Leeds Hub locations: Edinburgh, Manchester, London We’re growing our Engineering team to strengthen our ability to deliver world-class digital products for our clients. As a Front End Engineer, you’ll join cross-functional teams delivering modern web experiences for a variety of client projects, including fast-paced builds where we value curiosity, pragmatism, and collaboration. You’ll work closely with design and product to bring interfaces to life, and you’ll learn from experienced engineers around you. This is a great role for someone who enjoys building high-quality UI, improving their craft, and contributing to real client outcomes. What you’ll do Build responsive, accessible user interfaces for web applications. Work with designers and product teammates to deliver great user experiences....
Contract Spy
Dec 18, 2025
Duration not stated
Principal Full Stack JavaScript Engineer at hedgehog lab, Edinburgh, £Contract Rate (Outside IR35)
Contract Spy Edinburgh, Scotland, United Kingdom
Type: Full-time, Contract (outside IR35) Location: UK-based (flexible home, office, or hybrid working) Office locations: Newcastle and Leeds Hub locations: Edinburgh, Manchester, London We’re growing our Engineering team to strengthen our ability to deliver world-class digital products for our clients. As a Principal Full Stack JavaScript Engineer, you’ll join a small, highly technical group tackling a complex transformation: breaking down a monolithic JavaScript platform into clearer, modern components. This is an individual contributor role for someone who thrives on problem-solving, can ramp up quickly, and can collaborate confidently with other very strong engineers. You’ll be hands-on from day one, helping modernise architecture, improve maintainability, and set the foundations for future technology decisions, all while staying pragmatic and delivery-focused. What you'll do Lead (hands-on) full-stack engineering across a JavaScript...
Contract Spy
Dec 18, 2025
Duration not stated
Principal Full Stack JavaScript Engineer at hedgehog lab, Newcastle Upon Tyne, £Contract Rate (Outside IR35)
Contract Spy Newcastle Upon Tyne, England, United Kingdom
Type: Full-time, Contract (outside IR35) Location: UK-based (flexible home, office, or hybrid working) Office locations: Newcastle and Leeds Hub locations: Edinburgh, Manchester, London We’re growing our Engineering team to strengthen our ability to deliver world-class digital products for our clients. As a Principal Full Stack JavaScript Engineer, you’ll join a small, highly technical group tackling a complex transformation: breaking down a monolithic JavaScript platform into clearer, modern components. This is an individual contributor role for someone who thrives on problem-solving, can ramp up quickly, and can collaborate confidently with other very strong engineers. You’ll be hands-on from day one, helping modernise architecture, improve maintainability, and set the foundations for future technology decisions, all while staying pragmatic and delivery-focused. What you'll do Lead (hands-on) full-stack engineering across a JavaScript...
Contract Spy
Dec 18, 2025
Duration not stated
Principal Full Stack JavaScript Engineer at hedgehog lab, Leeds, £Contract Rate (Outside IR35)
Contract Spy Leeds, England, United Kingdom
Type: Full-time, Contract (outside IR35) Location: UK-based (flexible home, office, or hybrid working) Office locations: Newcastle and Leeds Hub locations: Edinburgh, Manchester, London We’re growing our Engineering team to strengthen our ability to deliver world-class digital products for our clients. As a Principal Full Stack JavaScript Engineer, you’ll join a small, highly technical group tackling a complex transformation: breaking down a monolithic JavaScript platform into clearer, modern components. This is an individual contributor role for someone who thrives on problem-solving, can ramp up quickly, and can collaborate confidently with other very strong engineers. You’ll be hands-on from day one, helping modernise architecture, improve maintainability, and set the foundations for future technology decisions, all while staying pragmatic and delivery-focused. What you'll do Lead (hands-on) full-stack engineering across a JavaScript...
Contract Spy
Dec 18, 2025
Duration not stated
Principal Full Stack JavaScript Engineer at hedgehog lab, Manchester, £Contract Rate (Outside IR35)
Contract Spy Manchester, England, United Kingdom
Type: Full-time, Contract (outside IR35) Location: UK-based (flexible home, office, or hybrid working) Office locations: Newcastle and Leeds Hub locations: Edinburgh, Manchester, London We’re growing our Engineering team to strengthen our ability to deliver world-class digital products for our clients. As a Principal Full Stack JavaScript Engineer, you’ll join a small, highly technical group tackling a complex transformation: breaking down a monolithic JavaScript platform into clearer, modern components. This is an individual contributor role for someone who thrives on problem-solving, can ramp up quickly, and can collaborate confidently with other very strong engineers. You’ll be hands-on from day one, helping modernise architecture, improve maintainability, and set the foundations for future technology decisions, all while staying pragmatic and delivery-focused. What you'll do Lead (hands-on) full-stack engineering across a JavaScript...
Contract Spy
Dec 18, 2025
Duration not stated
Principal Full Stack JavaScript Engineer at hedgehog lab, London, £Contract Rate (Outside IR35)
Contract Spy London, England, United Kingdom
Type: Full-time, Contract (outside IR35) Location: UK-based (flexible home, office, or hybrid working) Office locations: Newcastle and Leeds Hub locations: Edinburgh, Manchester, London We’re growing our Engineering team to strengthen our ability to deliver world-class digital products for our clients. As a Principal Full Stack JavaScript Engineer, you’ll join a small, highly technical group tackling a complex transformation: breaking down a monolithic JavaScript platform into clearer, modern components. This is an individual contributor role for someone who thrives on problem-solving, can ramp up quickly, and can collaborate confidently with other very strong engineers. You’ll be hands-on from day one, helping modernise architecture, improve maintainability, and set the foundations for future technology decisions, all while staying pragmatic and delivery-focused. What you'll do Lead (hands-on) full-stack engineering across a JavaScript...
Contract Spy
Dec 16, 2025
Duration not stated
Frontend Engineer at Gendo, London, £400-£650 per day
£400 - £650 per day
Contract Spy London, UK
About Gendo Gendo is a revolutionary, browser-based AI platform designed to empower architects and designers to generate accurate, high-quality visual representations of their designs in seconds, not days - a huge improvement on existing workflows. Within just 12 months of launching, we have 62,000+ architects and designers using Gendo to produce visualizations 100x faster than traditional workflows. We pride ourselves on being a lean, focussed and efficient team formed of highly talented individuals. This, and our product driven mantra, led to us securing both substantial pre-seed-stage and seed-stage funding from renowned investors within the space, enabling us to expand our team and deliver on our ambitious vision. What we value At Gendo, design is our core mission. We believe in the power of tools to elevate creative expression and push the boundaries of architectural possibility. We don't build in a vacuum. We have refined our technology in direct...
Contract Spy
Dec 12, 2025
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
Dec 09, 2025
Duration not stated
Frontend Engineer at Gendo, London, £400-£650 per day
£400 - £650 per day
Contract Spy London, UK
About Gendo Gendo is a revolutionary, browser-based AI platform designed to empower architects and designers to generate accurate, high-quality visual representations of their designs in seconds, not days - a huge improvement on existing workflows. Within just 12 months of launching, we have 62,000+ architects and designers using Gendo to produce visualizations 100x faster than traditional workflows. We pride ourselves on being a lean, focussed and efficient team formed of highly talented individuals. This, and our product driven mantra, led to us securing both substantial pre-seed-stage and seed-stage funding from renowned investors within the space, enabling us to expand our team and deliver on our ambitious vision. What we value At Gendo, design is our core mission. We believe in the power of tools to elevate creative expression and push the boundaries of architectural possibility. We don't build in a vacuum. We have refined our technology in direct...
Contract Spy
Jan 06, 2026
Duration not stated
Full Stack Engineer (Strapi, React, Node) at Plume, Remote, £Contractor Rate
Contract Spy Remote (City Of Bristol, England, United Kingdom)
Plume is looking for a mid-senior Full Stack Engineer to support the development of our custom Learning Management System, built on Strapi, React and Node.   This is an initial contractor role with the potential to evolve into a longer term full-time position. Candidates must be based in a European timezone.   You will be contributing to client projects delivered in an agency environment, as well as occasional work on our in-house product. Because much of the work is client facing, the role requires strong communication skills, consistent time tracking and the ability to collaborate with a Project Manager to estimate work accurately and deliver to those estimates. You should be comfortable discussing requirements, demonstrating progress and raising risks early.   You will work across our monolithic Strapi codebase and React applications. This includes schema design, content structures, permissions, endpoints, performance improvements and...
Contract Spy
Jan 06, 2026
Duration not stated
Security Engineer at SiXworks, Farnborough, £Contractor Rate
Contract Spy Farnborough, England, United Kingdom
About The Job We are looking to recruit a Security Engineer to join us on fast moving, innovative and influential work that is underway in the Defence and Security Sector. As a Security Engineer in a cutting-edge technology environment, you will be responsible for working with the Security Lead and technical teams to secure the solution.   You will have a challenging, vastly interesting, and technically diverse role.   Key Responsibilities and Tasks Documenting security configuration Proactive management of technical vulnerabilities Deployment of security tooling (vulnerability scanning/SIEM/etc). Development of alerts and dashboards in SIEM configuration. Deploying secure lockdowns to information systems. Assist 2nd line Security Analysts in triaging critical incidents.   Experience (Essential) Knowledge of configuring SIEM tooling. Basic understanding of threat frameworks, such as ATT&CK....
Contract Spy
Jan 06, 2026
Duration not stated
Senior Java Developer - Front Office Applications at Solytics Partners, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
About Us:   Solytics Partners provide products and services to BFSI and Healthcare firms. We use AI/ML& cutting-edge technology to develop next generation solutions or provide efficient services. We have strong team of PHDs in AI/ML and experts in BFSI, and healthcare industry. Our regulatory compliant solutions and services enable leading corporations and institutions to create and sustain competitive advantage.   Experience Required: 8+ Years Contract Type: Inside IR35 Duration: 6 months to 12 months (possibility of extension)   Job Overview:   We are looking for a Java Engineer to join a high-performing team building low-latency, mission-critical applications. This is a contract role offering the opportunity to work on real-time, high-throughput systems within a fast-paced and innovative trading environment. The ideal candidate will be an expert in reactive Java programming , multithreading, and...
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