51 to 75 of 97 Open Source Jobs in London

Bio Machine Learning Engineer

Hiring Organisation
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Location
London Area, United Kingdom
tools (e.g. FASTQ, BAM, variant calling) Knowledge of protein structure modelling or drug discovery workflows Exposure to MLOps, deployment, and production systems Publications or open-source contributions in relevant domains Why Join Them Opportunity to work on genuinely impactful problems in healthcare and life sciences Early-stage equity ...

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. ...

Mid-Senior Ruby on Rails Engineer (B2B SaaS | Hybrid | UK)

Hiring Organisation
Transreport
Location
City of London, London, United Kingdom
Experience working with mobile applications (React Native/Kotlin/Swift). Experience working in regulated industries or multi-client B2B systems. Contributions to open-source Ruby projects or technical blogging. Benefits Private healthcare after your probation (including children) Hybrid working model 25 days holiday Volunteering Leave Free ...

Vice President, AI Deployment & Strategy (UK, Italy, France or Germany)

Hiring Organisation
SaxeCap
Location
London Area, United Kingdom
worked on a live deal, you know what this feels like. Builder DNA. You don't just recommend, you build. Side projects, open-source contributions, 0-to-1 products, or intrapreneurial ventures all signal the instinct we're looking for. Structured synthesis at scale. You can process massive ...

VoIP Operations & Production Release Engineer

Hiring Organisation
StableLogic
Location
Greater London, England, United Kingdom
hybrid or remote role that combines production release management (planning, governance, execution) with deep operational ownership of a real-time voice infrastructure built on open-source SIP stacks, session border controllers, and AWS cloud services. You will be the technical authority responsible for ensuring that releases reach production ...

Head of Technology (Technical)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
waterfall and Agile methodology. Experience of many different technology types and approaches, front end, back end, SaaS, IaaS, PaaS, cloud, hybrid Cloud, Opensource, ERP, CRM, Web, Automation, DevOps, Scrum. Expertise in both the strategy and execution of digital and technology transformation. Develop and lead substantial technology and implementation functions. Support ...

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 ...

AI Software Engineer

Hiring Organisation
Fruition Group
Location
North West London, London, United Kingdom
Employment Type
Permanent, Work From Home
similar) Consultancy or client-facing technology delivery experience Desirable: Experience with vector databases, embeddings, or model fine-tuning Cloud platform experience (AWS preferred) Open-source contributions or visible AI side projects This is not a research-focused post; it is suited to engineers who build, deploy and scale ...

Founding CTO (Co-founder Earn-in Track)

Hiring Organisation
Game Caster
Location
London Area, United Kingdom
finished a beta with 20 studios. We have a paying lighthouse customer running the full Plan → Style → Feed loop end-to-end on an open world/survival/crafting title. The product works. The next chapter is taking it from 20 studios to hundreds — and the engineering side … that chapter is yours to own. Role Description This is a full-time remote (UK preferred but open to all locations) role for a Founding CTO on a co-founder earn-in track. As the Founding CTO, you will lead the end-to-end software development process, define technical ...

Research Science - Human Attention

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £75,000 per annum
images, video, 3D scenes, and gaze signals.Translating research ideas into practical prototypes with support from a small engineering-focused team.Contributing ideas proactively in an open, research-driven environment. Your Skills and Experience PhD, near-complete PhD, in machine learning, computer vision, AI, cognitive science, neuroscience, HCI, robotics … related field. Evidence of strong research output such as publications at leading computer vision or AI venues, patents, or substantial open-source contributions. Strong hands-on experience with Python and modern deep learning frameworks, ideally PyTorch. Ability to design, run, and evaluate machine learning experiments independently. A genuine ...

AI Engineer

Hiring Organisation
60x
Location
Greater London, England, United Kingdom
parts of the platform that decide whether the context layer delivers. Ingestion and connectors. SharePoint, Google Drive, Gmail, DealCloud, and the next source on the list. Some clients hand us 400k+ files at 150+ GB and expect it to Just Work. You'll build the pipes and harden them. … without burning out Beyond the role: Strong fundamentals in at least one of Python, JavaScript or TypeScript Something shipped, a project, a dissertation, an open-source contribution, a hackathon win, where you can walk us through architectural choices and what you'd do differently Comfort in an agent ...

Senior Software Engineer – Property-Based Testing (London)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
team. Candidates should be comfortable working with AI assistance and maintaining quality in software development. This job is a fantastic opportunity to contribute to open source and work on cutting-edge technology. #J-18808-Ljbffr ...

Scala Developer

Hiring Organisation
Robert Half
Location
London, UK
Employment Type
Full-time
role with production issues and release management Profile The Scala Developer will have knowledge and experience of a wide range of best of breed open source and commercial technologies - Scala, Kubernetes, Docker, AWS. Experience of software development for high capacity, high traffic, high availability websites/systems Delivery ...

Scala Developer

Hiring Organisation
Robert Half
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
role with production issues and release management Profile The Scala Developer will have knowledge and experience of a wide range of best of breed open source and commercial technologies - Scala, Kubernetes, Docker, AWS. Experience of software development for high capacity, high traffic, high availability websites/systems Delivery ...

Research Engineer

Hiring Organisation
Block MB
Location
City of London, London, United Kingdom
complex ideas clearly to both technical and non-technical audiences Nice to Have Experience in asset management, hedge funds, or quantitative trading Contributions to open-source ML projects Prior tech lead or mentorship experience What's on Offer Full ownership of ML strategy from day one Dedicated time ...

Data Engineer

Hiring Organisation
Searchability NS&D
Location
London Area, United Kingdom
transform data for analytics and reporting. Develop ETL/ELT workflows to move data efficiently into data warehouses, data lakes and lake houses using open-source and AWS tooling. Apply DevOps practices, including CI/CD, infrastructure as code and automation, to improve and streamline data engineering processes. ...

Senior Test Manager- Financial Services

Hiring Organisation
KPMG UK
Location
City of London, London, United Kingdom
Change. In-depth understanding, knowledge and experience of the testing industry to include: testing services (type, costing, route to market), tools (commercial/open-source, selection and implementation), practices (methods by SDLC-type, test accelerators), metrics (selection, implementation), and key players (suppliers, tool vendors, industry “regulators”). ...

Deep Learning Engineer

Hiring Organisation
Humanoid
Location
London Area, United Kingdom
. Proven productization of deep nets (latency/throughput constraints, telemetry, on‐device optimization). Publications at ICLR/ICML/NeurIPS or equivalent opensource contributions. Familiarity with OpenVLA, Physical Intelligence (π) models, or similar open VLA frameworks. What We Offer: Meaningful time off to rest ...

Founding Engineer

Hiring Organisation
Pharosyn
Location
London, England, United Kingdom
iteration speed as first-class product concerns You Must •⁠ ⁠Have demonstrated ability to build and ship real products (e.g., shipped SaaS, production pipelines, open-source with users, meaningful side project, startup experience) - show us what you’ve made •⁠ ⁠Have strong core engineering fundamentals and the ability to learn … depth in one of our core domains. For outstanding senior engineers with relevant experience building and deploying complex systems with enterprise customers, we are open to going meaningfully higher. •⁠ ⁠Meaningful equity — this is a true founding engineer role •⁠ ⁠Direct collaboration with the founders on product and strategy •⁠ ⁠Travel ...

Web Application Developer

Hiring Organisation
Shepherd Reardon
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£25,000 - £40,000 per annum
preferably in a science/engineering/numerate discipline you will have least 1 year of hands-on C# development or other open-source software development which could have been obtained during university studies or your personal time. Additionally you must have experience of working on a website ...

Founding Engineer

Hiring Organisation
Explore Group
Location
City of London, London, United Kingdom
building REST APIs using NestJS or Express Or Python Experience with MongoDB or similar databases Evidence of building independently, for example side projects, startups, open source work Experience in a company with fewer than 50 employees High agency and comfort operating in fast moving environments Nice to have ...

Java Engineers - Senior / Lead

Hiring Organisation
numi
Location
City of London, London, United Kingdom
standards and a commitment to building trust-based software. Nice to Have Previous experience in a fintech or high-growth startup environment. Contributions to open-source projects or a background in building custom tooling. Familiarity with cross-functional "tribe and squad" working models. Why Join ...

Vice President - Ontologist - Data Scientist Lead

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Experience with data standards and ontologies for Data and Financial services. Contributions to Ontology community, such as papers, conference presentations, industry standard contributions, or open source contributions. #J-18808-Ljbffr ...

Senior Test Manager

Hiring Organisation
KPMG UK
Location
London Area, United Kingdom
Consulting environment In-depth understanding, knowledge and experience of the testing industry to include: testing services (type, costing, route to market), tools (commercial/open-source, selection and implementation), practices (methods by SDLC-type, test accelerators), metrics (selection, implementation), and key players (suppliers, tool vendors, industry “regulators”). ...

Senior Talent Acquisition Lead

Hiring Organisation
Ultralytics
Location
London Area, United Kingdom
Sales, Solutions, Customer Success, Partnerships) in developer-led products. Familiarity with OKR frameworks and operating cadences that drive measurable recruiting outcomes. Prior exposure to open-source or developer ecosystems (e.g., Ultralytics GitHub). Passion for what we build and how it’s used by teams worldwide … improvement. Strive for excellence: Perseverance and attention to detail. Actions, not words: Focus on delivering meaningful results. Act with urgency: Seize fleeting opportunities. Open access to all: Transparent communication and collaboration. Learn more in our Ultralytics Handbook and values. 💰 Compensation and benefits We reward excellence and impact — not just ...