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13 web application engineer jobs found in Remote

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Remote United Kingdom web application engineer
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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 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
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 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 18, 2026
6 Months or more
React Full Stack Engineer (Claude Code) at Reapit Ltd, Remote, 6 Months, £Excellent Day Rate (Outside IR35)
Contract Spy Remote (United Kingdom)
Outside IR35 contract - 6 months - excellent day rate - remote Reapit - Who are we? Reapit is the original end-to-end business technology provider for estate agencies of all sizes. We've been helping sales and lettings agents build relationships and grow their businesses for more than 25 years. Our technology empowers property professionals across Europe, the Middle East, Australia, and New Zealand to work with buyers, sellers, tenants, and landlords to deliver a dream home experience. Worldwide, over 100,000 agents across more than 15,000 branches use Reapit to run their businesses, manage properties, collect rent, engage clients, and provide outstanding customer service every time. What you'll be doing Reporting to the Director of Engineering, you'll operate as a highly senior technically hands-on engineer, Embedded into a squad and frequently working Forward Deployed - direct with clients to understand, shape and ship solutions to their workflows. You'll...
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 12, 2026
6 Months or more
Software Engineer (GCP, Java) at Office for National Statistics, Remote/Newport, £Contract Rate
Contract Spy Remote (Newport PO30, UK)
The Office for National Statistics (ONS) is the UK's largest producer of official statistics, covering a range of key economic, social and demographic topics. These include measuring changes in the value of the UK economy, estimating the size, geographic distribution and characteristics of the population, and providing indicators of price inflation, employment, earnings, crime and migration.   SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.    As a Software Engineer (GCP, Java), your main responsibilities will be: Develop and maintain scalable, high-quality applications using Java and Spring Boot Design and...
Contract Spy
May 06, 2026
Hourly/Freelance
Senior Data Scraping Engineer (Python) at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
Mindrift is looking for highly skilled Python Data Scraping Engineers to join the Tendem project and drive specialized data scraping workflows within our hybrid AI + human system. In this role, as an AI Pilot - that's how we refer to this role at Mindrift - you'll collaborate with Tendem Agents that handle repetitive tasks, while you provide critical thinking, domain expertise, and quality control to deliver accurate and actionable results. This part-time remote opportunity is ideal for technical professionals with hands-on experience in web scraping, data extraction and processing. What We Do The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe. About the Role This is a freelance role for a Tendem project. As a Python Data Scraping Engineer, you 'll handle data scraping tasks requiring technical precision for web...
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
May 01, 2026
up to 6 Months
Salesforce Test Automation Engineer at UK Research & Innovation, Remote/Swindon, 4 Months, £Contract Rate
Contract Spy Remote (Swindon, UK)
As a Salesforce Test Automation Engineer, you will influence quality at all stages of the project, driving continuous improvement and getting involved with requirements, analysis, design, testing and release of enterprise level software applications. You will work to ensure the successful delivery of the major platform work items from different IT projects through robust integration and test processes.   The ideal candidate for this role will be able to demonstrate experience with Acceptance testing (Including UAT), Exploratory Testing and Automation of functional and non-functional requirements. You will need to have an aptitude to pick up new skills quickly and a desire to provide coaching and mentoring to other testers within the team and other areas of the organisation.   Experience of Salesforce projects and SFDC platform experience is required for this role.   Key Responsibilities and Accountabilities: Identify and raise awareness of...
Contract Spy
Apr 30, 2026
Hourly/Freelance
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
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...
Contract Spy
Apr 27, 2026
6 Months or more
Scientific Software Engineer at Met Office, Remote/Exeter, 6 Months, £Contract Rate
Contract Spy Remote (Exeter, UK)
In this role you will provide technical leadership in the re-design, development and translation, maintenance, and support of existing specialised scientific software applications into an updated code base to enable easier scientific changes and maintenance of existing capabilities.   As a Scientific Software Engineer your main responsibilities will be to:   Proficiently provide deep and/or broad scientific and technical insight into the re-coding of legacy scientific software into supportable code. Engage with internal and/or external users alongside the Project and Product roles in the team to understand the requirements for your work and significantly contribute to the development and evaluation of plans to meet these requirements. Apply, promote, and support good Quality Assurance processes, best practice and standards in both your and others' work to ensure agreed standards are maintained and support collaborative team ways of working....
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