1 to 25 of 180 Open Source Jobs in the UK

Opensource Software Engineer

Hiring Organisation
Lorien
Location
Cheltenham, Gloucestershire, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Open Source Software Engineer Location: Cheltenham Are you passionate about open source technologies and building innovative solutions? We are looking for an Open Source Software Engineer to join our team and deliver bespoke solutions across multiple platforms, disconnected networks, and cloud environments. About … Role As an Open Source Software Engineer, you will work within a small, collaborative team to design and develop software solutions based on open source principles. You'll contribute to all stages of the development life cycle, from requirements gathering to deployment, while sharing knowledge ...

Software Licensing Specialist - FOSS

Hiring Organisation
Talent Smart
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 595 - 630 Daily
financial services client is seeking a Software Licensing Specialist to support the governance, processes and controls surrounding the consumption and contribution of Free and Open Source Software (FOSS). This role sits within an international team and involves close collaboration with Engineering, Tooling and Legal functions. … well suited to candidates with strong expertise in open-source licensing, or those with a background in Software Asset Management (SAM)/IT Asset Management (ITAM) within a commercial environment. The successful candidate will be a proactive self-starter, comfortable working independently and delivering to tight deadlines ...

Software Licensing Consultant - FOSS

Hiring Organisation
Talent Smart Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 595 - 600 Daily
financial services client is seeking a Software Licensing Specialist to support the governance, processes and controls surrounding the consumption and contribution of Free and Open Source Software (FOSS). This role sits within an international team and involves close collaboration with Engineering, Tooling and Legal functions. … well suited to candidates with strong expertise in open-source licensing, or those with a background in Software Asset Management (SAM)/IT Asset Management (ITAM) within a commercial environment. The successful candidate will be a proactive self-starter, comfortable working independently and delivering to tight deadlines ...

Software Licensing Specialist - FOSS

Hiring Organisation
Talent Smart
Location
E14, Canary Wharf, Greater London, United Kingdom
Employment Type
Contract
Contract Rate
£595 - £630/day
financial services client is seeking a Software Licensing Specialist to support the governance, processes and controls surrounding the consumption and contribution of Free and Open Source Software (FOSS). This role sits within an international team and involves close collaboration with Engineering, Tooling and Legal functions. … well suited to candidates with strong expertise in open-source licensing, or those with a background in Software Asset Management (SAM)/IT Asset Management (ITAM) within a commercial environment. The successful candidate will be a proactive self-starter, comfortable working independently and delivering to tight deadlines ...

Forensic Investigator

Hiring Organisation
Orchard Recruitment Ltd
Location
Douglas, Isle of Man, United Kingdom
Employment Type
Permanent
business continues to grow they are seeking a Forensic Investigator to join and play a leading role. The role of Forensic Investigator combines open-source intelligence (OSINT), enhanced due diligence (EDD), corporate investigations and digital forensics, and cyber incident response. You will require a meticulous, analytical, and resilient … digital evidence, conduct OSINT and EDD investigations, and prepare court-ready and regulator-ready forensic reports. Duties in core areas of responsibility will include: Open-Source Intelligence (OSINT) & Digital Profiling - Conduct detailed open-source investigations into individuals, companies, networks, and assets using professional OSINT tools - Gather ...

Technical Architect Principal (UK)

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £500 to £550 per day
responsible for designing major solution components, defining reference architectures, and guiding development teams through POCs to production-scale implementations. The role has a strong open-source, distributed systems, and data architecture focus, with frequent CIO-level technical interactions. Your Responsibilities Architecture & Blueprint Design Define end-to-end architecture … components for scalability, resilience, and performance. Lead tool selection and POC execution, validating architectural choices. Guide teams from conceptual design to production-ready architecture. Open Source & Platform Architecture Act as the open-source architecture authority, ensuring correct adoption and customization. Evaluate and recommend open-source ...

Software Licensing Analyst/Engineer

Hiring Organisation
GCS
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £620/day
Software Licensing Analyst/FOSS Licensing SME to support the development of processes and controls governing the use and contribution of Free and Open-Source Software (FOSS) across the organisation. This role sits within the Technology CTO/Engineering Practice function and will play a key part … strengthening open-source governance, compliance, and licensing frameworks. The role requires a proactive self-starter who can work independently, manage competing priorities, and deliver results under tight deadlines. Key Responsibilities Evaluate and communicate the implications of open-source software licenses to both technical and non-technical ...

Infrastructure Support (Kubernetes) upto 60k

Hiring Organisation
microTECH Global LTD
Location
Cambridge, England, United Kingdom
compact but unusually broad infrastructure footprint that supports hardware design, security verification, FPGA-based testing, CI/CD for silicon projects, and collaborative open-source workflows. This is a fantastic opportunity for a junior to mid-level engineer who thrives on learning new technologies quickly and enjoys making … declarative infrastructure, zero-trust networking, hybrid cloud/on-prem Kubernetes, and custom tooling—while contributing directly to the productivity of engineers building foundational open-source silicon. Key Responsibilities Help maintain and troubleshoot our on-prem Kubernetes cluster, powering hardware simulation, verification, and test workloads Support our Nebula ...

OSS Developer (Python)

Hiring Organisation
Sanderson Recruitment
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Permanent
Salary
£55,000
lead and build a Tech4Good project based in Bristol. You'll be creating and building a community to develop a platform based in an open-source environment The Role: We are looking for an OSS Developer (Python) to join a team to help build, develop and maintain … Community engagement, liaising across multiple teams and stakeholders, including industry, academics and people within the maker/hacker community. Tech stack: Python Django Open source - evolution of code Responsibilities Using high-level expertise, collaborate with key stakeholders to deliver specialist technical services. Develop creative and innovative solutions ...

Senior PyTorch Engineer

Hiring Organisation
Advanced Micro Devices
Location
East Anglia, United Kingdom
Employment Type
Permanent
across training and inference workloads. Framework Enablement : Lead efforts to enhance PyTorch and its ecosystems on AMD GPUs, contributing performance-critical improvements to upstream open-source repositories. Open-Source Intergration : Engage directly with PyTorch and other open-source maintainers to align on requirements, propose ...

Data Engineer

Hiring Organisation
Above & Beyond - Climate Tech Recruitment
Location
City of London, London, United Kingdom
public finance and development data and make it universally accessible and useful - collapsing the time from raw data to actionable insight. By building open, interoperable data infrastructure and intuitive analytical tools, ONE Data strengthens transparency, accountability, and more effective investment in development. In a system where data is fragmented … coverage metrics, and automated testing so that every data point in our systems is trustworthy and well documented And will also contribute to: Shipping open-source data infrastructure, building pipelines and tools that the broader development data community can use and extend. Designing APIs for data access, including ...

Applied AI Research Engineer - £300k + bens - London

Hiring Organisation
Transparent Technology
Location
City of London, London, United Kingdom
Employment Type
Permanent
methods * Fine-tune and deploy LLMs in production environments * Apply reinforcement learning techniques (SFT, PPO, DPO, GRPO) * Run hands-on experimentation to outperform closed-source models * Break down ambiguous research ideas into structured roadmaps * Optimise open-source LLMs (LoRa, Llama etc.) for enterprise deployment One hire will … applied AI/ML (exceptional 3+ years considered) * Deep experience in fine-tuning + reinforcement learning * Experience shipping ML systems from research into production * Open-source LLM experience essential * Product-driven engineering mindset (Apple, LinkedIn, Amazon style environments ideal but must be willing to work in a start ...

Full Stack Developer

Hiring Organisation
83zero Limited
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
+ equity We're hiring for a UK cyber security startup building a platform that helps organisations detect malicious open-source code and secure their software supply chain in real time. The product continuously scans dependencies, surfaces risk clearly, and helps teams prevent compromised packages from entering … curious about cyber security, this is a chance to build something genuinely important. Why this is interesting (especially if you like cyber) Open source and third-party dependencies are now one of the biggest attack paths for modern organisations. This team is tackling that head-on with ...

ICT Technical Analyst

Hiring Organisation
Merseyside Police
Location
Liverpool, Merseyside, North West, United Kingdom
Employment Type
Permanent
Salary
£50,000
subject; or relevant experience in infrastructure hardware and software systems. Skills & Requirements Ability to support hardware, software, networks, storage, physical infrastructure, COTS products, and open-source solutions. Awareness of virtual and cloud computing (IaaS, PaaS, SaaS). Understanding of information security principles and relevant security controls. Awareness … ability to apply them under guidance. Skills & Requirements Ability to build, configure, administer and support infrastructure technologies (hardware, software, networking, cloud solutions, COTS, open source). Understanding and application of modern standards approaches. Ability to manage issues through to resolution or handover. Strong service orientation with the ability ...

Senior Software Engineer - Backend

Hiring Organisation
Zettafleet
Location
United Kingdom
platform for businesses and organisations to train their own LLM on their proprietary data. We can use non-conventional AI hardware and automatically source and combine GPUs (and other types of AI accelerators) from multiple cloud providers, enabling users to optimise for cost, duration or geographic location … with technical and non-technical stakeholders. Nice to have: Machine Learning: Experience in generative models, LLMs, multi-modal models and Deep Learning more generally. Open-source: Contributions to and experience in open-source projects. Startup experience: Experience in an early-stage startup environment. How we work ...

Senior Software Engineer - Frontend

Hiring Organisation
Zettafleet
Location
City of London, London, United Kingdom
platform for businesses and organisations to train their own LLM on their proprietary data. We can use non-conventional AI hardware and automatically source and combine GPUs (and other types of AI accelerators) from multiple cloud providers, enabling users to optimise for cost, duration or geographic location … interpersonal and communication skills, with technical and non-technical stakeholders. Nice to have: Visual design: Background in graphic design and/or visual arts. Open-source: Contributions to and experience in open-source projects. Startup experience: Experience with a startup work environment and wider ecosystem. ...

GenAI Architect

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
FinOps & Model Routing • Framework Expertise: Hands-on development experience with one or more orchestration frameworks (e.g., LangChain, LlamaIndex, Semantic Kernel). • Thought Leadership & Open Source: Published work (whitepapers, patents), conference speaking engagements, or active contributions to relevant open-source projects. • Certifications: Professional-level cloud certifications (e.g. ...

AI Architect

Hiring Organisation
Hirexa Solutions UK
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
FinOps & Model Routing Framework Expertise : Hands-on development experience with one or more orchestration frameworks (e.g., LangChain, LlamaIndex, Semantic Kernel). Thought Leadership & Open Source : Published work (whitepapers, patents), conference speaking engagements, or active contributions to relevant open-source projects. Certifications : Professional-level cloud certifications (e.g. ...

Experienced WordPress Engineer

Hiring Organisation
Affinity
Location
Truro, Cornwall, South West, United Kingdom
Employment Type
Permanent
Salary
£40,000
public sector, including central government, and enterprise-level private sector clients. We specialise in Discovery, Design, Development, Implementation, Data Integration and Migration, utilising open-source technologies including WordPress. We are committed to nurturing long-term relationships with our clients through quality-driven and cost-effective Support, Maintenance … part of an agile development team, building and maintaining customer websites and digital services using WordPress, SQL and PHP, utilising various services and open source tools. They will support existing solutions and help continually improve them through work packages. They will be working on a number of high ...

Geospatial Software Engineer

Hiring Organisation
ISR Recruitment Ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
your skills and develop your career across a range of languages and platforms. Many of their projects also involve Geographic Information Systems (GIS) and open-source geospatial technologies, helping clients unlock the value of location-based data through mapping, spatial analysis and data-driven decision making. Skills … enhancing and maintaining software, infrastructure and deployment pipelines that are robust, secure and scalable. Projects may include solutions involving geospatial data, GIS platforms and open-source mapping tools. Work collaboratively across disciplines: partnering with Senior and Lead Engineers, Delivery Managers, Designers and Data Scientists to shape solutions, contribute ...

Geospatial Software Engineer

Hiring Organisation
ISR RECRUITMENT LIMITED
Location
Manchester, United Kingdom
Employment Type
Permanent
Salary
£60000 - £90000/annum (plus company benefits & bonuses)
your skills and develop your career across a range of languages and platforms. Many of their projects also involve Geographic Information Systems (GIS) and open-source geospatial technologies, helping clients unlock the value of location-based data through mapping, spatial analysis and data-driven decision making. Skills … enhancing and maintaining software, infrastructure and deployment pipelines that are robust, secure and scalable. Projects may include solutions involving geospatial data, GIS platforms and open-source mapping tools. Work collaboratively across disciplines: partnering with Senior and Lead Engineers, Delivery Managers, Designers and Data Scientists to shape solutions, contribute ...

Senior Robotics Engineer

Hiring Organisation
Lawrence Harvey
Location
Oxfordshire, England, United Kingdom
across a global fleet What they’re looking for: Proven industry experience or a strong academic robotics background Evidence of real work - deployed systems, open-source contributions, competitions etc. Strong experience with ROS 2, C++, and Python Solid Linux fundamentals, Git, CI/CD, and containerization Strong communication … bonus if you have: • LiDAR sensor integration expertise • Experience designing robotics software at scale • LiDAR-based SLAM, segmentation, or perception pipeline experience • Contributions to open-source robotics They move fast. Standards are high. Ownership is real. On-site x3 days per week in Oxfordshire. If you want ...

Application Security Analyst

Hiring Organisation
Bowerford Associates
Location
Exeter, Devon, United Kingdom
Employment Type
Permanent
Salary
£55000 - £60000/annum Pension, Healthcare, Holiday, Bonus
security protocols, cryptography, and authentication. Proficiency in programming or scripting ( any of the following, C#, Python, Java, JS frameworks or similar ). Experience with open-source and enterprise security tools. Excellent problem-solving and analytical skills. A broad interest across the security domain. About Us Our client … Secure Software Development Lifecycle, SSDLC, Vulnerability Management, Security Protocols, Cryptography, Authentication, Web Application Security, OWASP Top 10, Programming, Scripting, C#, Python, Java, JS frameworks, Open-Source Security Tools, Enterprise Security Tools. Please note that due to a high level of applications, we can only respond to applicants whose ...

Application Security Analyst

Hiring Organisation
Bowerford Associates
Location
Reading, Berkshire, United Kingdom
Employment Type
Permanent
Salary
£55000 - £60000/annum Pension, Healthcare, Bonus, Holiday
security protocols, cryptography, and authentication. Proficiency in programming or scripting ( any of the following, C#, Python, Java, JS frameworks or similar ). Experience with open-source and enterprise security tools. Excellent problem-solving and analytical skills. A broad interest across the security domain. About Us Our client … Secure Software Development Lifecycle, SSDLC, Vulnerability Management, Security Protocols, Cryptography, Authentication, Web Application Security, OWASP Top 10, Programming, Scripting, C#, Python, Java, JS frameworks, Open-Source Security Tools, Enterprise Security Tools. Please note that due to a high level of applications, we can only respond to applicants whose ...

Head of Engineering

Hiring Organisation
Bob's Business | The Cybersecurity Culture Company
Location
United Kingdom
broad and varied stack with Svelte/PHP/Laravel/GatsbyJS/Node applications, Dockerised platforms, AWS-hosted services, and deeply integrated open source tooling and infrastructure. This is an excellent role for an experienced technical leader looking to shape an entire technical ecosystem, free from heavy … technical stakeholders clearly and effectively. Highly Desirable Experience in a B2B SaaS, e-learning/EdTech, or Cybersecurity environment. Hands-on experience with open source tooling and integrations. Experience with SCIM provisioning, SSO, SCORM/xAPI and LMS platforms. Experience with both Microsoft 365 and Google Workspace environments ...