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16 lead developer jobs found

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Hourly/Freelance lead developer
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Contract Spy
Dec 11, 2025
Hourly/Freelance
Senior Software Sales/Solutions Manager at WinPure, Remote, from £30 per hour
Contract Spy Remote
Location: Reading RG7 4SA Type: Full-time, hybrid or remote Reports to: CEO About WinPure We are a global leader in data quality solutions, empowering organizations to clean, match, and manage their data with confidence. Our award-winning software helps businesses make faster, smarter decisions using high-quality, reliable data. As we accelerate global expansion, we’re seeking a proven sales hunter — A Senior Sales / Solutions Manager who thrives on building pipelines, winning new logos, and scaling international revenue. The Opportunity You’ll own our global sales performance — building and leading a world-class sales function that converts opportunity into measurable growth. You’ll be hands-on in closing enterprise-level deals while shaping a scalable sales process that supports our next phase of international growth. This is an opportunity to create, not just manage — to take a high-performing product with a stellar...
Contract Spy
Dec 09, 2025
Hourly/Freelance
IQA (Internal Quality Assurer) for Data and ICT
Contract Spy Remote
Job Description Job Title - IQA (Internal Quality Assurer) for ICT and Data Apprenticeships Location - Remote working Position - Freelance Reports to - Head of Training and Quality About the Organisation We are an grade 2 ‘good’ national training provider based in Leicester established since 2006. We deliver further education and provide employment opportunities through our Apprenticeships programmes. After recently achieving our OFSTED grade 2 ‘good’ - We are on a mission - to become an Outstanding high performing work-based training provider meeting the needs of each individual learner empowering them to succeed, progress and thrive in their chosen career path. To support employers in providing quality, meaningful learning opportunities for new and existing team members. Our vision is to provide and deliver our training programmes with positive qualification outcomes, by fulfilling legislation and regulation as a minimum...
Contract Spy
Dec 08, 2025
Hourly/Freelance
Software Developer (Ruby)/Quality Assurance (AI Trainer) at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please provide your resume in English and specify your proficiency level. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. 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 GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Code generation and code review Prompt evaluation and complex...
Contract Spy
Dec 05, 2025
Hourly/Freelance
Video App Developer – SaaS at Come & See Education, Remote, £35-£50 per hour
Contract Spy Remote
***PLEASE NOTE: VIDEO SDK EXPERIENCE REQUIRED – Please do not apply if you haven’t worked with video SDKs in production.*** We are looking for an experienced video application developer to help us build a SaaS-based video solution for our web portal. Our goal is to create a scalable, cloud-hosted (non–self-hosted) video app that supports a dynamic breakout room workflow driven entirely by API logic. Use Case Summary: ~4,000 users join a main livestream session. The system then instantly splits users into ~2,000 breakout rooms (2 users per room). After 5–10 minutes, everyone is pulled back to the main livestream. This switching process may repeat multiple times during a single session. All room creation, user assignment, and transitions must be code-driven via API , not manual. Requirements: Proven experience building SaaS video platforms or SDK integrations . Proven experience as...
Contract Spy
Dec 04, 2025
Hourly/Freelance
AI/ML Penetration Tester at Mindrift, Remote, £Freelance Rate
Contract Spy United Kingdom
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. 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 GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Evaluate and red team AI models and agents and machine...
Contract Spy
Dec 03, 2025
Hourly/Freelance
AI/ML Penetration Tester at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. 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 GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Evaluate and red team AI models and agents and machine...
Contract Spy
Dec 02, 2025
Hourly/Freelance
Software Developer (Java) - Quality Assurance (AI Trainer) at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. 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 GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Code generation and code review Prompt evaluation and...
Contract Spy
Dec 02, 2025
Hourly/Freelance
IQA (Internal Quality Assurer) for Data and ICT at LFF Limited, Remote, £Freelance Rate
Contract Spy Remote
Job Description Job Title - IQA (Internal Quality Assurer) for ICT and Data Apprenticeships Location - Remote working Position - Freelance Reports to - Head of Training and Quality About the Organisation We are an grade 2 ‘good’ national training provider based in Leicester established since 2006. We deliver further education and provide employment opportunities through our Apprenticeships programmes. After recently achieving our OFSTED grade 2 ‘good’ - We are on a mission - to become an Outstanding high performing work-based training provider meeting the needs of each individual learner empowering them to succeed, progress and thrive in their chosen career path. To support employers in providing quality, meaningful learning opportunities for new and existing team members. Our vision is to provide and deliver our training programmes with positive qualification outcomes, by fulfilling legislation and regulation as a minimum...
Contract Spy
Nov 28, 2025
Hourly/Freelance
Senior Web Product UX Designer at Canvas8, London, £Freelance Rate
Contract Spy London, UK
We're looking for a hands-on Senior Web Product UX Designer to define the strategic vision and shape the user experience of our AI-powered insights platform. If you thrive in a fast-paced, small-team environment where your work has immediate impact, we'd love to hear from you. This is a dual-focus role in a small, agile team: you'll zoom out to develop our overall UX strategy and design system, then zoom back in to deliver tactical improvements and keep our development pipeline moving. You'll be the UX authority in a highly collaborative environment, working closely with our CTO, Head of Product, Strategy Director, and UI Designer. Expect lively workshops, healthy debate, and diverse opinions – then take ownership of the hands-on UX delivery. About us We are Canvas8, a strategic insights practice operating out of London, NY, LA, Singapore & Manila. We help our clients understand people so they can make better business decisions. Our work is about...
Contract Spy
Nov 28, 2025
Hourly/Freelance
Video App Developer – SaaS at Come & See Education, Remote, £35-£50 per hour
Contract Spy Remote
***PLEASE NOTE: VIDEO SDK EXPERIENCE REQUIRED – Please do not apply if you haven’t worked with video SDKs in production.*** We are looking for an experienced video application developer to help us build a SaaS-based video solution for our web portal. Our goal is to create a scalable, cloud-hosted (non–self-hosted) video app that supports a dynamic breakout room workflow driven entirely by API logic. Use Case Summary: ~4,000 users join a main livestream session. The system then instantly splits users into ~2,000 breakout rooms (2 users per room). After 5–10 minutes, everyone is pulled back to the main livestream. This switching process may repeat multiple times during a single session. All room creation, user assignment, and transitions must be code-driven via API , not manual. Requirements: Proven experience building SaaS video platforms or SDK integrations . Proven experience as...
Contract Spy
Nov 25, 2025
Hourly/Freelance
IQA (Internal Quality Assurer) for Data and ICT at LFF Limited, Remote, £Freelance Rate
Contract Spy Remote
Job Description Job Title - IQA (Internal Quality Assurer) for ICT and Data Apprenticeships Location - Remote working Position - Freelance Reports to - Head of Training and Quality About the Organisation We are an grade 2 ‘good’ national training provider based in Leicester established since 2006. We deliver further education and provide employment opportunities through our Apprenticeships programmes. After recently achieving our OFSTED grade 2 ‘good’ - We are on a mission - to become an Outstanding high performing work-based training provider meeting the needs of each individual learner empowering them to succeed, progress and thrive in their chosen career path. To support employers in providing quality, meaningful learning opportunities for new and existing team members. Our vision is to provide and deliver our training programmes with positive qualification outcomes, by fulfilling legislation and regulation as a minimum...
Contract Spy
Nov 25, 2025
Hourly/Freelance
Informatica Platform Architect at SKM Group, Remote, 4 Months, £34-£50 per hour
Contract Spy Remote
We are seeking a seasoned Informatica Platform Architect to lead the design, implementation, and optimization of enterprise-grade data integration and master data management (MDM) solutions. This role requires both strategic architecture leadership and hands-on technical expertise across Informatica’s Intelligent Data Management Cloud (IDMC) suite — including Cloud Application Integration (CAI) , Cloud Data Integration (CDI) , and MDM components. You will play a pivotal role in defining the enterprise data integration blueprint , driving cloud modernization , and ensuring that solutions meet the highest standards of scalability, reliability, and governance. Key ResponsibilitiesArchitecture & Strategy Define and drive the end-to-end architecture for Informatica IDMC solutions (CAI, CDI, and MDM). Develop target-state and transitional architectures aligned with enterprise data strategy and cloud-first principles....
Contract Spy
Nov 21, 2025
Hourly/Freelance
Senior Web Product UX Designer at Canvas8, London, £Freelance Rate
Contract Spy London, UK
We're looking for a hands-on Senior Web Product UX Designer to define the strategic vision and shape the user experience of our AI-powered insights platform. If you thrive in a fast-paced, small-team environment where your work has immediate impact, we'd love to hear from you. This is a dual-focus role in a small, agile team: you'll zoom out to develop our overall UX strategy and design system, then zoom back in to deliver tactical improvements and keep our development pipeline moving. You'll be the UX authority in a highly collaborative environment, working closely with our CTO, Head of Product, Strategy Director, and UI Designer. Expect lively workshops, healthy debate, and diverse opinions – then take ownership of the hands-on UX delivery. About us We are Canvas8, a strategic insights practice operating out of London, NY, LA, Singapore & Manila. We help our clients understand people so they can make better business decisions. Our work is about...
Contract Spy
Nov 21, 2025
Hourly/Freelance
Video App Developer – SaaS at Come & See Education, Remote, £35-£50 per hour
Contract Spy Remote
***PLEASE NOTE: VIDEO SDK EXPERIENCE REQUIRED – Please do not apply if you haven’t worked with video SDKs in production.*** We are looking for an experienced video application developer to help us build a SaaS-based video solution for our web portal. Our goal is to create a scalable, cloud-hosted (non–self-hosted) video app that supports a dynamic breakout room workflow driven entirely by API logic. Use Case Summary: ~4,000 users join a main livestream session. The system then instantly splits users into ~2,000 breakout rooms (2 users per room). After 5–10 minutes, everyone is pulled back to the main livestream. This switching process may repeat multiple times during a single session. All room creation, user assignment, and transitions must be code-driven via API , not manual. Requirements: Proven experience building SaaS video platforms or SDK integrations . Proven experience as...
Contract Spy
Nov 20, 2025
Hourly/Freelance
Software Developer (Rust) - Quality Assurance (AI Trainer) at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. 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 GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Code generation and code review Prompt evaluation and complex data...
Contract Spy
Nov 19, 2025
Hourly/Freelance
Software Developer (Java) - Quality Assurance/AI Trainer at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. 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 GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Code generation and code review Prompt evaluation and...
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