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206 python developer jobs found

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Contract Spy
Apr 10, 2026
Duration not stated
Python Developer at Scrumconnect, Remote, £300-£400 per day (Outside IR35)
£300 - £400 per day
Contract Spy Remote
Date Opened 09/04/2026 Salary 300 - 400 outside IR 35 Job Description This is a remote position. About Scrumconnect Scrumconnect is a leading digital transformation consultancy delivering user-centred, innovative solutions across the UK public and private sectors. We specialise in helping organisations design, build, and scale digital services that make a real impact. Our teams work closely with clients to solve complex challenges using modern technologies, agile methodologies, and a strong focus on user needs. Required Skills & Experience: Strong experience in software development, particularly in building scalable web applications Proven ability to design and implement end-to-end user journeys and workflow-driven systems Experience working with reusable components, such as form builders or workflow engines Ability to work within and extend existing codebases effectively Solid understanding of software development best...
Contract Spy
Apr 09, 2026
6 Months or more
Python Developer at Honey Mountain IT Solutions, London, 6 Months, £Market Rate
Contract Spy London Area, United Kingdom
Python Developer Number Of Vacancies: 1 Inside IR35 – 6 Months Contract (With likely extension) Day Rate: As Per Market Rate Location: Central London Hybrid: 2 Days On‑Site per Week Note: Must have a valid Right to Work in the UK — no visa sponsorship available.   Overview We’re looking for a highly skilled Python Developer to join a growing engineering team. This role is ideal for someone who thrives in modern cloud‑native environments, enjoys building clean and scalable backend systems, and is comfortable working in a hybrid setup in Central London. You’ll be responsible for designing, developing, and maintaining backend services, APIs, and cloud‑based components that support a range of internal and customer‑facing applications. The ideal candidate brings strong engineering fundamentals, hands‑on cloud experience, and a passion for building reliable, well‑structured systems.  ...
Contract Spy
Apr 02, 2026
Duration not stated
Senior Python Developer at Synechron, London, £Contract Rate
Contract Spy London, UK
About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. Job Location: London (Hybrid) The Job: This role sits within a newly formed team - AI team - which is responsible for leveraging AI. You will implement, build and deploy Back End systems to automate the analysis of data, code, documentation and Jira, and structure the extracted knowledge in a Credit Risk Domain aware knowledge graph. What we'll need from you 15-20 years of experience. Proficiency in core Python and FastAPI framework . Profound understanding of software design principles, architectural patterns, and an unwavering commitment to writing clean, maintainable, and production-grade code. Experience of the full life cycle of design, implementation and running of...
Contract Spy
Mar 26, 2026
Duration not stated
Senior Python Developer at Synechron, London, £Contract Rate
Contract Spy London, UK
About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. Job Location: London (Hybrid) The Job: This role sits within a newly formed team - AI team - which is responsible for leveraging AI. You will implement, build and deploy Back End systems to automate the analysis of data, code, documentation and Jira, and structure the extracted knowledge in a Credit Risk Domain aware knowledge graph. What we'll need from you 15-20 years of experience. Proficiency in core Python and FastAPI framework . Profound understanding of software design principles, architectural patterns, and an unwavering commitment to writing clean, maintainable, and production-grade code. Experience of the full life cycle of design, implementation and running of...
Contract Spy
Mar 20, 2026
Duration not stated
Senior Python Developer at Synechron, London, £Contract Rate
Contract Spy London, UK
About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. Job Location: London (Hybrid) The Job: This role sits within a newly formed team - AI team - which is responsible for leveraging AI. You will implement, build and deploy Back End systems to automate the analysis of data, code, documentation and Jira, and structure the extracted knowledge in a Credit Risk Domain aware knowledge graph. What we'll need from you 15-20 years of experience. Proficiency in core Python and FastAPI framework . Profound understanding of software design principles, architectural patterns, and an unwavering commitment to writing clean, maintainable, and production-grade code. Experience of the full lifecycle of design, implementation and running...
Contract Spy
Apr 13, 2026
Duration not stated
Python Developer - LLM at YO IT CONSULTING, Remote, £Contract Rate
Contract Spy Remote
Engagement Type: Independent Contractor Work Mode: Remote Global Schedule: Part-Time (15–25 hrs/week, flexible up to 40 hrs) Duration: 1–3 Months Immediate Start Role Overview We are hiring experienced Software Engineers (Python-focused) to support high-impact research collaborations with leading AI labs. In this project-based engagement, you will contribute to building training datasets that improve AI model reasoning and problem-solving across real-world coding tasks. This is a unique opportunity to apply your software engineering expertise toward shaping the next generation of intelligent systems. About the Project You will work on SWE-bench–style tasks derived from real open-source repositories. Since frontier AI models do not expose their internal reasoning traces, your role will involve: Reconstructing model reasoning Annotating solution trajectories Inferring thought processes behind...
Contract Spy
Apr 02, 2026
Duration not stated
Python Developer - LLM at YO IT CONSULTING, Remote, £Contract Rate
Contract Spy Remote
Engagement Type: Independent Contractor Work Mode: Remote Global Schedule: Part-Time (15–25 hrs/week, flexible up to 40 hrs) Duration: 1–3 Months Immediate Start Role Overview We are hiring experienced Software Engineers (Python-focused) to support high-impact research collaborations with leading AI labs. In this project-based engagement, you will contribute to building training datasets that improve AI model reasoning and problem-solving across real-world coding tasks. This is a unique opportunity to apply your software engineering expertise toward shaping the next generation of intelligent systems. About the Project You will work on SWE-bench–style tasks derived from real open-source repositories. Since frontier AI models do not expose their internal reasoning traces, your role will involve: Reconstructing model reasoning Annotating solution trajectories Inferring thought processes behind...
Contract Spy
Mar 26, 2026
Duration not stated
Python Developer - LLM at YO IT CONSULTING, Remote, £Contract Rate
Contract Spy Remote
Engagement Type: Independent Contractor Work Mode: Remote Global Schedule: Part-Time (15–25 hrs/week, flexible up to 40 hrs) Duration: 1–3 Months Immediate Start Role Overview We are hiring experienced Software Engineers (Python-focused) to support high-impact research collaborations with leading AI labs. In this project-based engagement, you will contribute to building training datasets that improve AI model reasoning and problem-solving across real-world coding tasks. This is a unique opportunity to apply your software engineering expertise toward shaping the next generation of intelligent systems. About the Project You will work on SWE-bench–style tasks derived from real open-source repositories. Since frontier AI models do not expose their internal reasoning traces, your role will involve: Reconstructing model reasoning Annotating solution trajectories Inferring thought processes behind...
Contract Spy
Apr 13, 2026
Hourly/Freelance
Python Developer at YO IT CONSULTING, Remote, £Hourly Rate
Contract Spy Remote (United Kingdom)
hiring experienced Python Engineers to support a variety of high-impact research collaborations with leading AI labs. Freelancers will help improve AI systems through work extending coding benchmarks that reflect real-world development across diverse languages and domains. This is a unique opportunity to apply your engineering expertise toward shaping the next generation of intelligent systems. Key Responsibilities Develop and validate coding benchmarks in Python by curating issues, solutions, and test suites from real-world repositories Ensure benchmark tasks include comprehensive unit and integration tests for solution verification Maintain consistency and scalability of benchmark task distribution Provide structured feedback on solution quality and clarity Debug, optimize, and document benchmark code for reliability and reproducibility Ideal Qualifications 3–10 years of experience as a backend software engineer, ML engineer,...
Contract Spy
Apr 02, 2026
Hourly/Freelance
Python Developer at YO IT CONSULTING, Remote, £Hourly Rate
Contract Spy Remote (United Kingdom)
hiring experienced Python Engineers to support a variety of high-impact research collaborations with leading AI labs. Freelancers will help improve AI systems through work extending coding benchmarks that reflect real-world development across diverse languages and domains. This is a unique opportunity to apply your engineering expertise toward shaping the next generation of intelligent systems. Key Responsibilities Develop and validate coding benchmarks in Python by curating issues, solutions, and test suites from real-world repositories Ensure benchmark tasks include comprehensive unit and integration tests for solution verification Maintain consistency and scalability of benchmark task distribution Provide structured feedback on solution quality and clarity Debug, optimize, and document benchmark code for reliability and reproducibility Ideal Qualifications 3–10 years of experience as a backend software engineer, ML engineer,...
Contract Spy
Mar 26, 2026
Hourly/Freelance
Python Developer at YO IT CONSULTING, Remote, £Hourly Rate
Contract Spy Remote (United Kingdom)
hiring experienced Python Engineers to support a variety of high-impact research collaborations with leading AI labs. Freelancers will help improve AI systems through work extending coding benchmarks that reflect real-world development across diverse languages and domains. This is a unique opportunity to apply your engineering expertise toward shaping the next generation of intelligent systems. Key Responsibilities Develop and validate coding benchmarks in Python by curating issues, solutions, and test suites from real-world repositories Ensure benchmark tasks include comprehensive unit and integration tests for solution verification Maintain consistency and scalability of benchmark task distribution Provide structured feedback on solution quality and clarity Debug, optimize, and document benchmark code for reliability and reproducibility Ideal Qualifications 3–10 years of experience as a backend software engineer, ML engineer,...
Contract Spy
Mar 27, 2026
Hourly/Freelance
AI Trainer - Advanced Python Developers at Prolifics, Remote, £Freelance Rate
Contract Spy Remote
AI Trainer - Advanced Python Developers   About Prolific Prolific is not just another player in the AI space – we are building the biggest pool of quality human data in the world. Over 35,000 AI developers, researchers, and organizations use Prolific to gather data from paid study participants with a wide variety of experiences, knowledge, and skills. The role We’re looking for Python Developers to help train and evaluate cutting-edge AI models. If you have the necessary experience, we’ll send you a quick 10- to 15-minute test to assess your skills and suitability for AI tasks. If successful, you’ll be invited to join Prolific as a Domain Expert participant, where you’ll get paid to train and evaluate powerful AI models.  Researchers looking for your skills tend to pay $40/hr per AI task completed. You must be prepared to complete paid tasks that require one hour of uninterrupted work, though many are shorter....
Contract Spy
Apr 08, 2026
Duration not stated
Python Developer - Ai Training at YO IT CONSULTING, Remote, £Contract Rate
Contract Spy Remote
Work Mode: Remote Engagement Type: Independent Contractor Schedule: Full-Time or Part-Time Contract Language Requirement: Fluent English Role Overview We partner with leading AI teams to improve the quality, usefulness, and reliability of general-purpose conversational AI systems. This project focuses specifically on evaluating and improving how AI systems reason about code, generate programming solutions, and explain technical concepts across various complexity levels. The role involves rigorous technical evaluation of AI-generated responses in coding and software engineering contexts. What You’ll Do Evaluate LLM-generated responses to coding and software engineering queries for accuracy, reasoning, clarity, and completeness Conduct fact-checking using trusted public sources and authoritative references Conduct accuracy testing by executing code and validating outputs using appropriate tools Annotate model responses by identifying...
Contract Spy
Mar 30, 2026
Duration not stated
Python Developer - Ai Training at YO IT CONSULTING, Remote, £Contract Rate
Contract Spy Remote
Work Mode: Remote Engagement Type: Independent Contractor Schedule: Full-Time or Part-Time Contract Language Requirement: Fluent English Role Overview We partner with leading AI teams to improve the quality, usefulness, and reliability of general-purpose conversational AI systems. This project focuses specifically on evaluating and improving how AI systems reason about code, generate programming solutions, and explain technical concepts across various complexity levels. The role involves rigorous technical evaluation of AI-generated responses in coding and software engineering contexts. What You’ll Do Evaluate LLM-generated responses to coding and software engineering queries for accuracy, reasoning, clarity, and completeness Conduct fact-checking using trusted public sources and authoritative references Conduct accuracy testing by executing code and validating outputs using appropriate tools Annotate model responses by identifying...
Contract Spy
Mar 23, 2026
Duration not stated
Python Developer - Ai Training at YO IT CONSULTING, Remote, £Contract Rate
Contract Spy Remote
Work Mode: Remote Engagement Type: Independent Contractor Schedule: Full-Time or Part-Time Contract Language Requirement: Fluent English Role Overview We partner with leading AI teams to improve the quality, usefulness, and reliability of general-purpose conversational AI systems. This project focuses specifically on evaluating and improving how AI systems reason about code, generate programming solutions, and explain technical concepts across various complexity levels. The role involves rigorous technical evaluation of AI-generated responses in coding and software engineering contexts. What You’ll Do Evaluate LLM-generated responses to coding and software engineering queries for accuracy, reasoning, clarity, and completeness Conduct fact-checking using trusted public sources and authoritative references Conduct accuracy testing by executing code and validating outputs using appropriate tools Annotate model responses by identifying...
Contract Spy
Apr 14, 2026
6 Months or more
AI/ML Developer at Delta Capita, Sheffield, 6 Months initial, £500-£550 per day
£500 - £550 per day
Contract Spy Sheffield, UK
Job description Duration:  Initial 6 Month Contract Rate:  £500-£550 p/d Location:  Sheffield   This role sits within a global onboarding and KYC capability team focused on delivering modern, scalable, and user‑centric digital solutions. The team brings together business, operations, and technology stakeholders to co-design platforms that improve customer experience, streamline processes, and strengthen operational resilience.   The function supports enterprise-wide digital transformation efforts, enabling the move towards a more modern, future-state technology architecture. Teams collaborate across multiple global locations to design and build digital services that allow customers to onboard quickly, simply, and securely.   The remit covers onboarding products, platforms, and delivery approaches aligned to agile, client-focused ways of working. Solutions are used by a broad spectrum of customers, from...
Contract Spy
Apr 14, 2026
Duration not stated
Senior Backend Developer at Well Played Games, Leamington Spa, £Contractor Option
Contract Spy Royal Leamington Spa, UK
  Well Played Games is a small studio based in Leamington Spa, UK with a strong track record of collaborating with world-class IP. Founded in 2017, our aim is to build live free-to-play video games across multiple platforms. We are looking for a Senior Backend Developer to join our team and take ownership of development across our live mobile titles. The Role As part of the project’s code team, you will be responsible for the support of the live game, the design and development of new features. You will take full ownership of the backend of a live product and work closely with the whole team to deliver new, major features safely. You will be responsible for the design and development of services to support new game features. You will also be involved in and manage the rest of the team’s backend work by providing technical oversight, support and code reviews. As a senior developer, you will be encouraged to contribute to the analysis and pragmatic...
Contract Spy
Apr 14, 2026
6 Months or more
Data Scientist at BP, London Canary Wharf, to 12/26, £Contract Rate
Contract Spy Canary Wharf, London, UK
Job Title: Data Scientist Job Location: Canary Wharf (Hybrid- 4 days in office, 1 from home) Contract Length: Until 31/12/2026 Industry: Oil and Energy, Tech Working Hours: 8 per day/40 per week   Role Overview: Design, develop, and maintain production-grade AI applications and services using modern software engineering practices (CI/CD, testing, observability, cloud-native design). Define and implement foundational platforms and tools (e.g., conversational bots, AI-powered search, unstructured data processing, GenBI) that are reusable and scalable across the enterprise. Participate in cross functional team initiatives-embedded projects with business stakeholders-to rapidly build and deploy AI solutions that solve high-priority business problems. Evaluate and integrate existing AI tools, frameworks, and APIs (e.g., LLMs, vector DBs, retrieval-augmented generation, AI agents) into robust...
Contract Spy
Apr 14, 2026
Duration not stated
Principal Developer at Waracle, London/Remote, £Contract Option
Contract Spy Hybrid (London, UK)
Waracle are looking for a Principal Developer for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation.   We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.   Role Overview   Are you a strategic thinker who enjoys nurturing talent as much as solving complex technical puzzles?   We are looking for a collaborative Principal Developer to act as a technical North Star across multiple squads. In this role, you’ll move beyond just writing code to shaping the very architecture of our digital products, ensuring they...
Contract Spy
Apr 13, 2026
Hourly/Freelance
Web Designer & Developer at Ukunishop LTD, Remote, £Hourly Rate
Contract Spy Remote
Overview We are seeking a talented and innovative Web Designer & Developer to join our dynamic team. This role involves creating visually appealing, user-friendly websites and digital interfaces that align with our brand identity and business objectives. The ideal candidate will possess a strong foundation in both design principles and front-end development, with experience across a variety of tools and technologies. This is an excellent opportunity for a creative professional passionate about delivering exceptional digital experiences. Duties Design and develop responsive, engaging websites using HTML, CSS, JavaScript, and frameworks such as Bootstrap and React. Implement interaction design principles to enhance user engagement and usability. Utilise content management systems like WordPress, Drupal, or SharePoint for website maintenance and updates. Create wireframes, prototypes, and mockups using tools such as Axure, Balsamiq, Figma, Adobe XD, and...
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