776 to 800 of 1,234 Permanent Open Source Jobs

AI/ML Software Engineer

Location
St Athan, Wales, United Kingdom
challenges, have the know-how to overcome them, and work together to succeed.Operating for over a decade, we deliver cutting-edge capabilities from open-source intelligence (OSINT) to uncrewed surface vessels and high-altitude one-way effectors that deliver true interoperability across all security levels. ...

Principal Fullstack Engineer

Location
Greater London, England, United Kingdom
engineer, staff engineer, or technical lead at a startup or high-growth company CS or ML research background with production research experience Published research, open source work, conference talks, or other visible engineering community contribution We care less about titles, years, and pedigree, and more about the systems ...

Research Engineer, Forge

Location
Greater London, England, United Kingdom
building reliable ML infrastructure, evaluation systems, or large‐scale data processing pipelines. Research experience in LLMs, agents, multimodal models, reasoning, code, or domain adaptation. Open‐source contributions, publications, or widely used internal tooling. Experience training multi‐billion‐parameter models (pre‐training or RL). Experience training on petabyte ...

Cloud Advisory Architecture Consultant

Location
Greater London, England, United Kingdom
apart: Engineering/Development : Demonstrated experience working close to engineering and teams, ensuring realistic delivery expectations. Developer Repo Contributions : Showcase during interview personal or open-source work, prototypes, accelerators, or reference architectures so that during interview the repo artefacts can be used explain their decisions through architecture diagrams ...

Platform Engineer (Barcelona)

Location
Cambourne, England, United Kingdom
exposing it for third‐party components. Exposure to ML orchestration tooling (Flyte, Airflow, MLflow, SkyPilot). Go, and a track record of contributing to open‐source infrastructure projects. Perks & Benefits Indefinite contract. Variable performance bonus. Signing bonus. We offer work visa sponsorship (If applicable). Relocation package ...

Senior Backend Engineer

Location
Greater London, England, United Kingdom
these as well, even better... You have some personal projects on the go (maybe you write a blog, help with friends' websites, contribute to open source projects etc.) You've worked with LLMs such as Claude, and written your own plugins/skills/agents Through your work ...

Technical Director, Applied AI

Location
United Kingdom
technologies. Experience developing internal production, developer, or creative technology tools. Experience applying AI to 2D, 3D, animation, VFX, video, or other content‐production workflows. Open‐source projects, plugins, tools, technical experiments, or significant personal projects demonstrating practical engineering ability. Experience introducing new technology, tools, or workflows into ...

Cloud Advisory Agentic Focussed Consultant

Location
Greater London, England, United Kingdom
apart: Engineering/Development : Demonstrated experience working close to engineering and teams, ensuring realistic delivery expectations. Developer Repo Contributions : Showcase during interview personal or open-source work, prototypes, accelerators, or reference architectures so that during interview the repo artefacts can be used explain their decisions through architecture diagrams ...

Senior Conversational AI Delivery Engineer

Location
United Kingdom
have Vendor Professional Certification (e.g., Google Dialogflow, Amazon Lex, Microsoft Bot Framework, Cognigy). Participation in AI hackathons or community projects (e.g., NVIDIA, open‐source agent frameworks). Familiarity with Omilia OCP, Pathfinder, Voice Biometrics, CoPilot, or OptimizeIQ. Domain experience in banking, healthcare, utilities, or insurance CX. Exposure ...

Lead Compute Platform Engineer

Location
Greater London, England, United Kingdom
productivity when using our framework and services Identifying and implementing computational improvements Making improvements and/or fixing bugs by submitting patches to open-source projects in our stack, such as Spark, Iceberg, Hadoop, Airflow, and many others Acting as an expert on Spark and Scala Mentoring engineers ...

Senior HPC Engineer

Location
United Kingdom
workloads on Kubernetes or alongside OpenStack. A background supporting AI/ML training, MPI-based HPC applications or research computing, or contributions to open-source HPC or infrastructure projects. WHAT WE OFFER Competitive salary and annual discretionary bonus scheme Private Medical Insurance Enhanced Pension Scheme Flexible working arrangements ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
future fundamental improvements. Longer term, you will help define and drive the architectural evolution of the software stack, potentially including migration from MATLAB toward open‐source systems. As the company grows, there will also be opportunities to contribute to data architecture, offline scientific analysis pipelines, and web portals. ...

Software Engineer-Affiliate Partnerships

Location
Greater London, England, United Kingdom
Boot. Passionate about technology and continuous improvement, demonstrating exceptional coding proficiency, a commitment to clean and elegant code, and a keen interest in exploring open-source projects. Proactive, fast learner, and highly collaborative, with strong communication, analytical, and problem-solving skills, capable of independently identifying and resolving complex ...

Senior Machine Learning Engineer

Location
Greater London, England, United Kingdom
chemistry‐focused AI applications. Experience building or fine‐tuning large language models. Experience with agent‐based systems, tool use or agentic workflows. Contributions to open‐source ML projects or published research. Orbital is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment ...

Developer Content Engineer

Location
United Kingdom
tutorials, documentation, learning material, technical blogs or code examples would be valuable. We would also welcome experience with docs-as-code workflows, developer education, open-source communities, technical events or AI-assisted development and content creation. If you're an engineer who enjoys discovering how things work ...

Junior Technical Architect

Location
London Borough of Hammersmith and Fulham, England, United Kingdom
Model Context Protocol. You do not need previous architecture experience or a production portfolio. We welcome examples from university, personal projects, internships and open-source contributions. We are interested in how you think, what you have built and how you learn. Personal Attributes Curiosity, initiative and the ability ...

Software Engineer III - Backend Engineering - Java/Kotlin

Location
Greater London, England, United Kingdom
based languages (Java/Kotlin) but we also have parts of the platform that use other languages as needed. We look to use Open source when it makes sense and build ourselves when it doesn't. We are entirely cloud native and want to build a truly multi ...

.NET Security Architect

Hiring Organisation
HTC Global Services Inc
Location
Columbia, South Carolina, United States
Employment Type
Permanent
Salary
USD Annual
Develop automated just-in-time provisioning (JITP) solutions for user onboarding and offboarding. Implement application hardening and data protection for secure server deployments. Use open-source and enterprise penetration testing tools to test complete systems and produce fully documented penetration testing reports. Conduct application testing and debugging before ...

Managing Consultant - C&M - Google Cloud (Technical Lead)

Location
Greater London, England, United Kingdom
above, we would be thrilled if you also had: Knowledge of other cloud platforms Automation DevOps experience using Google tech like Cloud Build and open source tech like terraform We know the skill-gap and ‘somewhat need to tick every box’ can get in the way of meeting ...

Infrastructure Engineer ElevenLabs · Remote · UK · Platform & Infrastructure £62,500–£79,875 e 9d ago

Location
Greater London, England, United Kingdom
Bonus: experience with GPU clusters or ML training/inference infrastructure (e.g. vLLM, Slurm), on-prem/bare-metal or deep networking experience, or open-source contributions in the cloud-native community. Location This role is remote and can be executed globally. If you prefer, you can work ...

Software Engineering Intern (Summer 2027)

Location
Greater London, England, United Kingdom
this position will be located. Nice to have Hands-on experience with LLMs, evaluations, or agentic systems — whether from coursework, research, or personal projects Open source contributions or a portfolio of shipped side projects How we work Our credos shape how we make decisions and work ...

Product Strategy - Office of the CEO

Location
Greater London, England, United Kingdom
platforms) to evaluate trade-offs, challenge engineering assumptions, and conduct due diligence.* **Commercial & Financial Acumen:** Deep command of tech monetization models (SaaS, consumption, platform, open source) paired with strong financial modeling (M&A, scenario modeling, ROI).* **Problem-Solving & Influence:** First-principles thinker who can structure ambiguous problems ...

Forward Deployed Engineering Assoc Manager

Location
City Of London, England, United Kingdom
solutions (agents, orchestration, context engineering, RAG, workflows) in production environments. Minimum of 3 years of experience with AI platforms — OpenAI, Claude, Vertex AI, plus open-source models — including building abstraction layers to manage multi-provider pipelines. Minimum of 10 years of experience deploying to production , CI/ ...

Senior AI Engineer

Location
Greater London, England, United Kingdom
what changed because of your work, that’s a flag. The right technical toolkit. Strong Python, hands‐on experience with LLMs (OpenAI, Anthropic, open‐source), agent frameworks, RAG pipelines, vector databases, and backend infrastructure like FastAPI, Postgres, and ElasticSearch, or close enough that the gaps close fast. Domain ...

AI Solutions Architect

Location
Greater London, England, United Kingdom
Customer Success organization. Kimchi executes multi-model LLM workflows and autonomous agents with embedded governance and cost control. It intelligently routes across frontier and open-source models while enabling teams to establish strict budget caps, enforce model access policies, configure roles, and audit TCO via deep analytical tracking. ...