76 to 100 of 178 Open Source Jobs in the UK

Lead Data Engineer

Hiring Organisation
Anson Mccade
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
development of complex data components and subsystems, taking ownership from design through to testing and defect resolution. Provide hands-on design and development using open source and commercial platforms. Define and enforce development best practices, coaching team members to maintain high-quality code and consistency. Collaborate with architects ...

AI Engineer

Hiring Organisation
Sanderson Recruitment
Location
Edinburgh, Midlothian, Scotland, United Kingdom
Employment Type
Permanent
blend of): Strong experience with Python and common ML libraries (e.g. PyTorch, NumPy, Panda, TensorFlow, scikit-learn) Experience with LLMs and fine tuning (OpenAI, open-source models) Hands-on experience with agent frameworks (e.g. LangGraph, AutoGen, CrewAI, etc.) Experience deploying AI systems to production AI Solution design Experience ...

Associate Software Engineer

Hiring Organisation
X-On Health
Location
Woodbridge, Suffolk, East Anglia, United Kingdom
Employment Type
Permanent
Salary
£35,000
models) and prototyping how they can be applied to our products Operations: Optionally contribute to our AI infrastructure to help operate self-hosted open-source models Testing & Validation: Development of tooling to assist our Test Team in conducting evals against our many provider models to ensure ...

Graduate AI Software Engineer

Hiring Organisation
X-On Health
Location
Woodbridge, Suffolk, East Anglia, United Kingdom
Employment Type
Permanent
Salary
£35,000
models) and prototyping how they can be applied to our products Operations: Optionally contribute to our AI infrastructure to help operate self-hosted open-source models Testing & Validation: Development of tooling to assist our Test Team in conducting evals against our many provider models to ensure ...

AI Researcher

Hiring Organisation
Lorien
Location
City of London, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
LLMs, or multimodal AI. Understanding of ML concepts such as training, fine-tuning, optimisation, evaluation, and model drift. Experience building or adapting ML models (open-source or proprietary). Ability to design structured experiments and interpret model behaviour through metrics and analysis. Curiosity for emerging topics ...

Software Engineer

Hiring Organisation
DWP Digital
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
engineering landscape of DWP and build and improve public services used by millions of people. We develop, build and support products and applications using open source technology. We work as part of multi-functional agile delivery teams - you'll spend time collaborating, but have plenty of time ...

Software Engineer

Hiring Organisation
DWP Digital
Location
Newcastle Upon Tyne, Tyne and Wear, North East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
engineering landscape of DWP and build and improve public services used by millions of people. We develop, build and support products and applications using open source technology. We work as part of multi-functional agile delivery teams - you'll spend time collaborating, but have plenty of time ...

LLM Engineer

Hiring Organisation
Ultralytics
Location
City of London, London, United Kingdom
plus local holidays. Flexible Hours: Tailor your working hours to suit your productivity. Tech: Engage with cutting-edge AI projects and contribute to leading open-source software. Gear: Brand-new Apple MacBook and Apple Display provided. Team: Become part of a supportive and passionate team environment. ...

Cloud Engineering Consultant

Hiring Organisation
Sanderson Government and Defence
Location
Newbury, Berkshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
manage secure, resilient infrastructure within a high-security cloud services environment for our Cyber Solutions Client. You'll have the opportunity to work across open-source, Microsoft, hybrid, and public cloud technologies, supporting escalated incidents, driving automation, contributing to projects, and enhancing overall security posture. You'll bring ...

TIS Senior Developer

Hiring Organisation
NHS England
Location
Nationally, E14 5EA, United Kingdom
Salary
£55690.00 to £62682.00
Digital Service Standard. We are looking for an experienced software developer familiar with a range of digital/web services and solutions, ideally where open source and cloud technologies have applied agile development methods. They will work independently and in the team, with a high degree of proactively ...

AI Engineer Apprentice

Hiring Organisation
QA
Location
Langthwaite Grange Ind Estate, South Kirkby, Pontefract, West Yorkshire, England, United Kingdom
Employment Type
Full-Time
Salary
£24,000 per annum
foundation in AI/ML (e.g. neural networks, NLP, transformers) Proficiency in Python and ML frameworks (e.g. PyTorch, TensorFlow) Familiarity with LLM APIs and open-source models (e.g. GPT, Claude, Whisper) Understanding of agentic AI frameworks (e.g. LangChain, AutoGen) A passionate, motivated and driven person Desirable skills: Experience ...

Infrastructure Engineer

Hiring Organisation
Lockheed Martin
Location
Brockworth, Gloucestershire, UK
formal product sell off Experience in automated testing in the software domain Experience in developing GitLab CI/CD Pipelines. Experience with Commercial and Open Source automated testing frameworks Experience working with Git, Atlassian suite, Jira, Confluence or similar Knowledge and automation of both functional and non-functional ...

Infrastructure Engineer

Hiring Organisation
Lockheed Martin
Location
Brockworth, England, United Kingdom
formal product sell off Experience in automated testing in the software domain Experience in developing GitLab CI/CD Pipelines. Experience with Commercial and Open Source automated testing frameworks Experience working with Git, Atlassian suite, Jira, Confluence or similar Knowledge and automation of both functional and non-functional ...

Senior Developer

Hiring Organisation
Hunter Selection
Location
Conwy, Clwyd, United Kingdom
Employment Type
Permanent
development of industry-leading solutions. Role & Responsibilities: Design, develop, and maintain software products as directed by the Software Lead or Senior Management. Ensure source control (Git) is used for all projects, following best practices such as branching and merge strategies. Maintain accurate and up-to-date build documentation … ensure reliability and maintainability. Track, manage, and resolve issues via repository cards (e.g., GitHub Issues, Jira, or equivalent). Research and integrate existing open-source packages where suitable, ensuring all third-party code is properly licensed. Collaborate with hardware, firmware, and geophysics colleagues to deliver integrated solutions. Contribute ...

Software Developer

Hiring Organisation
Transunion
Location
Alderley Edge, Cheshire, United Kingdom
Employment Type
Permanent
Platforms AWS or GCP Infrastructure-as-code, CI/CD, and observability tooling Experience scaling systems under sustained load Contributions to internal tooling or open source Experience with large datasets and machine learning models Impact You'll Make: What's In It For you? At TransUnion you will … list of essential/desirable skills that you can't quite tick off, don't let that put you off applying. We are open to exploring training and development opportunities for the right candidate to ensure you are successful. We know imposter syndrome is real, lets confront ...

Software Engineer

Hiring Organisation
Future find
Location
United Kingdom
platform designed around deep candidate analysis, structured evaluation, and intelligent matching. Our mission is to build a tool which allows hiring companies to successfully source candidates directly, and alleviate the need for external recruitment agencies. The technical foundations already exist: cloud infrastructure, LLM pipelines, scoring logic, and multi-tenant … architectures , prompt pipelines, and structured outputs Strong understanding of model evaluation, explainability, and output validation Model Development Experience with fine-tuning or training models (open-source or proprietary) Understanding of model lifecycle management , data pipelines, and inference optimisation Familiarity with moving from API-based LLMs to self-hosted ...

Cloud Architect- eDV Cleared

Hiring Organisation
Searchability NS&D
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £115,000 per annum, Negotiable
commute to Manchester.- Experience as a hands-on cloud architect CLOUD ARCHITECT ESSENTIAL SKILLS- Expertise in delivering AWS Cloud native solutions- Background in Open-source technologies and frameworks- Experience with micro-service based architectures- Experience working with structured architecture approaches (TOGAF or SAFe)- Leadership and stakeholder management experience ...

Cloud Architect- eDV Cleared

Hiring Organisation
Searchability NS&D
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £120,000 per annum, Negotiable
commute to London.- Experience as a hands-on cloud architect CLOUD ARCHITECT ESSENTIAL SKILLS- Expertise in delivering AWS Cloud native solutions- Background in Open-source technologies and frameworks- Experience with micro-service based architectures- Experience working with structured architecture approaches (TOGAF or SAFe)- Leadership and stakeholder management experience ...

Cloud Architect- eDV Cleared

Hiring Organisation
Searchability NS&D
Location
Cheltenham, Gloucestershire, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £115,000 per annum
commute to Cheltenham.- Experience as a hands-on cloud architect CLOUD ARCHITECT ESSENTIAL SKILLS- Expertise in delivering AWS Cloud native solutions- Background in Open-source technologies and frameworks- Experience with micro-service based architectures- Experience working with structured architecture approaches (TOGAF or SAFe)- Leadership and stakeholder management experience ...

Artificial Intelligence Researcher

Hiring Organisation
microTECH Global LTD
Location
City of London, London, United Kingdom
preferences. Collaborate with researchers, engineers, and human feedback teams to build scalable alignment pipelines. Publish findings in top-tier AI conferences and contribute to open-source frameworks. Key Requirements: PhD in Computer Science, Machine Learning, or related field. Publications at NeurIPS, ICML, ICLR, ACL, or related venues. Deep ...

Senior Software Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Leicester, Leicestershire, East Midlands, United Kingdom
Employment Type
Permanent
Salary
£65,000
product and wider business stakeholders Projects are business-critical, customer-facing, and focused on supporting the company's next stage of growth. Tech Stack (Open-Source) Backend: PHP (Laravel) Frontend: Vue.js Database: MySQL Cloud & Infrastructure: AWS Version Control & Tooling: Git, CI/CD pipelines What They're Looking ...

Applied Data Scientist

Hiring Organisation
Change-IT Consulting Ltd
Location
Birmingham, West Midlands, United Kingdom
Employment Type
Permanent, Work From Home
development. Comfort working in fast-moving, evolving and sometimes ambiguous environments. Desirable (but not essential): Experience working with large language models via APIs or open-source frameworks. Fine-tuning or evaluating generative AI systems. Knowledge of MLOps, monitoring and lifecycle management. Experience with cloud AI/ML services ...

CYBER SECURITY ENGINEER / OFFENSIVE SECURITY

Hiring Organisation
Secure Recruitment Ltd
Location
North London, London, United Kingdom
Employment Type
Permanent, Work From Home
Proactive Approach to Navigating Technical Challenges. Experience of working within Fast-Moving Growth Environments or B2B Scale-UpsFocusing on Enterprise Clients Bonus: Contributions to Open-Source Projects or Public Security Tooling Responsibilities of Application Security Engineer: Cloud-Driven Engineering: Utilise Cloud-Native Services to Develop Resilient, Big Data ...

Senior Linux Infrastructure Engineer

Hiring Organisation
Sopra Steria
Location
Portsmouth, Hampshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
25 days holidays, 6% Contributory pension, 4 x life Insurance
Portsmouth OR Salisbury site, 2 days home working. What you'll be doing: Oversee and enhance Linux platform capabilities. Develop and maintain open-source and commercial tooling. Provide expert 3rd line technical support, mentoring, and fault resolution for 1st/2nd line teams. Act as a subject matter ...

AI Engineering Lead

Hiring Organisation
167 Solutions Ltd
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent, Work From Home
pipelines using vector databases, embeddings, and enterprise data sources Develop agent-based workflows , orchestration layers, and multi-step reasoning systems Work extensively with open-source and commercial LLM ecosystems , including Hugging Face models and tooling Implement prompt engineering, evaluation frameworks, and performance optimisation strategies Architect secure, scalable GenAI ...