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181 application engineer jobs found

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application engineer
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Contract Spy
Apr 24, 2026
Hourly/Freelance
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 Application Engineer - AI Trainer 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...
Contract Spy
Apr 20, 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 17, 2026
Hourly/Freelance
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 Application Engineer - AI Trainer 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...
Contract Spy
Apr 13, 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 10, 2026
Hourly/Freelance
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 Application Engineer - AI Trainer 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...
Contract Spy
Apr 20, 2026
Duration not stated
Senior Full Stack Developer at Deloitte, London, £Competitive Day Rate
Contract Spy London, UK
Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 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.   The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires a solid understanding of...
Contract Spy
Apr 13, 2026
Duration not stated
Senior Full Stack Developer at Deloitte, London, £Competitive Day Rate
Contract Spy London, UK
  Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 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.   The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...
Contract Spy
Apr 13, 2026
Duration not stated
Full Stack Developer at Deloitte, London, £Competitive Day Rate
Contract Spy London, UK
  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.   The Role We are looking for an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...
Contract Spy
Apr 09, 2026
Duration not stated
AWS DevOps Engineer at G-Research, London, £Contract Rate
Contract Spy London, UK
AWS DevOps Engineer (Contract) We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity. From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution — because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas. As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research – designing systems that scale, accelerate discovery and support innovation across the firm. Take the next step in your career.   The role   In this role, you’ll take ownership of our AWS landing zones and shared platform services, designing secure, scalable, multi-account environments that balance autonomy for engineering teams with strong governance and compliance. You’ll deliver robust,...
Contract Spy
Apr 22, 2026
up to 6 Months
Senior Software Engineer, Native Applications and Networking at Secure Code Warrior, London, 3 Months, £Contract Rate
Contract Spy London, UK
Join Secure Code Warrior to create a safer digital landscape by assisting companies to secure their software through developer-led practices!   Secure Code Warrior’s mission is to establish new standards for coding that transform the ways software is created. We do this by providing the world’s leading agile learning platform that delivers the most effective secure coding solution for developers to learn, apply, and retain software security principles. More than 600 enterprises trust Secure Code Warrior to implement agile learning security programs, build safer software, and create a culture of developer-driven security. We are a venture-backed company with offices in Australia, the United States, Belgium, Iceland, and the United Kingdom.   Secure Code Warrior is seeking a Senior Engineer to take long-term ownership of our core system-level product suite across Windows and macOS. In this contract role, you will be the architectural...
Contract Spy
Apr 09, 2026
Duration not stated
AWS Cloud Engineer at G-Research, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.   From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution — because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas.   As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research – designing systems that scale, accelerate discovery and support innovation across the firm.   Take the next step in your career.   The role   In this role, you’ll take ownership of our AWS landing zones and shared platform services, designing secure, scalable, multi-account environments that balance autonomy for engineering teams with strong governance and compliance. You’ll deliver robust,...
Contract Spy
Apr 24, 2026
Duration not stated
Senior Full Stack Engineer at OnBuy, Remote, 4 Months, £550-£650 per day (Outside IR35)
Contract Spy United Kingdom
Who are OnBuy? OnBuy are an online marketplace who are on a mission of being the best choice for every customer, everywhere. We have recently been named one of the UK 's fastest-growing tech companies in the Sunday Times 100 Tech list. All achievements we are very proud of, but we don 't let that go to our head. We are all laser focused on our mission and understand the huge joint effort ahead of us needed to succeed. Working at OnBuy: . This is a critical role responsible for building, scaling, and evolving OnBuy's core commerce platform across both front-end and back-end systems. As a Senior Full Stack Engineer, you will own engineering delivery end-to-end; from customer-facing experiences to underlying services and data systems. You will operate within a cross-functional team and be accountable for shipping high-quality, scalable solutions that directly impact GMV, seller performance, and customer experience. This role moves beyond "front-end vs back-end " you are...
Contract Spy
Apr 24, 2026
6 Months or more
IT Infrastructure Engineer (Security) at Xoriant, London Canary Wharf, 6 Months+, £Contract Rate
Contract Spy Canary Wharf, London, UK
IT Infrastructure Engineer(Security) Canary Wharf, UK Hybrid (2 days week) Inside IR35 Contract (6+ Months)   Key Skills • Creation of technical governance documentation, such as Low Level Designs and • Creation of security focused technical specifications for Windows environments • Secure Configuration Baseline creation • Knowledge of Active Directory Certificate Services • Knowledge of IIS • Knowledge of Active Directory Domain Services • Knowledge of Cryptography • Windows Server 2019 / 2022 / 2025 • Windows 11 • PowerShell • VMware including ESXi / vCentre • Strong understanding of designing to meet security principles and compliance • Application Infrastructure migration skills   Desirable Skills • Desirable: good knowledge MS SQL • Desirable: experience using M365 Security Controls • Ensure our internal...
Contract Spy
Apr 24, 2026
6 Months or more
AWS Serverless Engineer at AND Digital, Remote, 6 Months, £Contract Rate
Contract Spy Remote (United Kingdom)
Description Role Profile: Cloud Engineer (AWS) We are recruiting for a Cloud Engineer to join us ASAP for a duration of six months initially. This role is fully remote. 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 leave a legacy for the client. We do this through close relationships with our offices (or 'Clubs') so that our partners are always prioritized by a regional team close to them. This unique model has driven success for our clients and ourselves, evidenced by our remarkable organic growth since 2014. Today we number more than 1,500 people with Clubs all over the UK and Europe with plans for global expansion in the next couple of years. Join us - and help us fulfil our mission to close the world's digital skills gap. What you'll...
Contract Spy
Apr 24, 2026
Duration not stated
Software Engineer (Java, Python, Golang) at Test Yantra, 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
Apr 23, 2026
Duration not stated
Infrastructure Engineer at SiXworks, Farnborough/Remote, £Contractor Rate
Contract Spy Hybrid (Farnborough, UK)
Location Farnborough (Hybrid) Employment Type Contractor About the job  We currently have an exciting opportunity for an Infrastructure Engineer to join our existing experienced team.     Our organisation specialises in pioneering solutions within National Security & Defense, emphasising Secure by Design methodologies. As a valued member of our team, you'll contribute to cutting-edge projects, creating highly secure and high-performance software systems. This role requires the highest level of UK security clearance.   Responsibilities are likely to include:  Maintain, improve, and secure SiXworks’ multi-classification, virtualised, collaboration and development environments.  Work with IT infrastructure colleagues to improve SiXworks’ ‘Secure by Design’ capabilities, internally and across its projects.  Provide Infrastructure support...
Contract Spy
Apr 23, 2026
Duration not stated
ML Ops Engineer at CreateFuture, United Kingdom, £Contract Rate
Contract Spy United Kingdom
Who We Are CreateFuture is fast becoming the UK’s most recognisable digital consultancy, with years of experience building digital products and services for major organisations whilst putting our people first. We have offices in the centre of Edinburgh, Leeds, Manchester, and London as well as remote employees located throughout the country. We are a team of creators - whether that’s code, project plans, go to market strategies, culture initiatives, marketing campaigns, large language models or people policies. And together, with our clients, we create the future. This has seen us collaborate and partner across a multitude of industries and sectors, with the likes of PayPal, adidas, Natwest, FanDuel and Money Saving Expert, to name just a few. Our reputation as a partner determined to deliver high-quality, robust and thoughtful products has enabled us to scale to over 500 people in the last couple of years, and it is our amazing people - along with the safe,...
Contract Spy
Apr 23, 2026
up to 6 Months
IT Field Engineer at SAS Logistics, West Hunsbury, 3 Months, £Day Rate
Contract Spy West Hunsbury, Northampton NN4 9DL, UK
An exciting opportunity has arisen at SAS Tech Services Ltd as a IT Field Engineer. Formed in 2000, SAS Tech Services has developed an excellent reputation as a secure, reliable, cost-effective provider of logistics solutions and provider of onsite services ranging from large onsite data wipes, data centre decommissions, hardware and peripheral installations. Alongside providing in house technical support and remote services across the UK and Europe to cater to a wide scope of business requirements. Company van will be provided. Tasks include Assisting with IT hardware & peripheral support. Configuration of hardware (laptops, desktops and mobile phones) Contribute to ongoing and new IT Projects in the UK and Europe Data centre installs, moves and decoms Data sanitisation – data wiping, degaussing and data shredding Office IT hardware refreshes Software and application support Network support Server support Cloud solutions, office...
Contract Spy
Apr 23, 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
Apr 23, 2026
Duration not stated
Full Stack Developer (React, Java, Spring) at Deloitte, London, £Contract Rate
Contract Spy London, UK
Job Title: Full Stack Developer (Java, Spring, React) - 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.   The Role We are looking for an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires an...
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