151 to 175 of 434 Open Source Jobs

Software Engineer, RL Data

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
ambiguous environments — for example as a founder or CTO, forward deployed engineer, tech lead, founding engineer at a startup, or creator of a substantial opensource project. Trusted to run key projects: you lead and inspire others, plan workstreams effectively, collaborate with cross‐functional stakeholders, and proactively eliminate … tool‐use agentic tasks — and harden them so they behave correctly across millions of rollouts in a frontier training run. Bring a new data source online — from first conversation with a partner organization to data flowing into production training runs — coordinating with product, security, privacy, legal, and infrastructure teams ...

AIML Engineer, AI for Science

Hiring Organisation
GSK
Location
Kent, United Kingdom
Employment Type
Full Time
Salary
84000 to 140000 EUR Annually
will drive the development of AI models and agentic systems - researching, designing, implementing, and delivering solutions across a range of scientific tasks, including open-ended research questions, leveraging high-performance computing and the vast biomedical data sources available at GSK. Team Culture The AI4S team is built … software. Experience with Large Language Models (LLMs) and Agentic AI (e.g., tool use, multi-agent orchestration, deployment and evaluation). Contributions to relevant open-source projects. Relevant scientific publications in AI/ML (e.g., NeurIPS, ICML, ICLR, AAAI), computational biology or bioinformatics venues. Knowledge of or interest ...

Senior Pentester

Hiring Organisation
Foregenix
Location
United Kingdom
application testing across diverse client environments Progressively take part in more advanced offensive security activities, including red teaming, adversary simulations, social engineering engagements, and source code or configuration reviews Simulate attacker behaviour by identifying, chaining, and exploiting vulnerabilities to demonstrate realistic attack paths and impact Support the CRS team … e.g. Python, Perl, Ruby) and one programming language (e.g. C, C++, C#, Java), enabling custom tooling and automation. Experience working with or contributing to open-source projects is a plus. Experience with vulnerability scanning and penetration testing tools; participation in CTFs is highly valued. Strong ability to translate ...

Senior Pentester

Hiring Organisation
Foregenix
Location
United Kingdom, UK
application testing across diverse client environments Progressively take part in more advanced offensive security activities, including red teaming, adversary simulations, social engineering engagements, and source code or configuration reviews Simulate attacker behaviour by identifying, chaining, and exploiting vulnerabilities to demonstrate realistic attack paths and impact Support the CRS team … e.g. Python, Perl, Ruby) and one programming language (e.g. C, C++, C#, Java), enabling custom tooling and automation. Experience working with or contributing to open-source projects is a plus. Experience with vulnerability scanning and penetration testing tools; participation in CTFs is highly valued. Strong ability to translate ...

Principal Engineer, AI & Data Platform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
enterprise knowledge layer—the governed semantic models, ontologies, and knowledge graph structures that ground both human analytics and AI agents in a single source of truth. Define how business meaning flows from glossaries through data models to agent context.Conversational Analytics. Lead the strategy and delivery of natural-language interfaces … scaleExperience building or operating streaming data infrastructure alongside batch processingBackground in compliance-sensitive environments (SOX, regulatory reporting, audit systems)Published work, conference talks, or open-source contributions in knowledge engineering, semantic AI, or conversational analyticsBullish is proud to be an equal opportunity employer. We are fast evolving ...

Full Stack Engineer

Hiring Organisation
McGregor Boyall
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £100,000 per annum
event-driven architectures Strong understanding of software development best practices Desirable: Financial services or trading systems experience Messaging technologies (AMQP, Solace, Pub/Sub) Open-source contributions Regulatory project experience This is an excellent opportunity for an engineer looking to work on large-scale, business-critical systems while ...

Senior Developer

Hiring Organisation
ISR RECRUITMENT LIMITED
Location
Redhill, Surrey, United Kingdom
Employment Type
Permanent
Salary
£55000 - £60000/annum
Senior Developer to lead and work as part of a team in the system design/development processes. You will be using bespoke and open-source software, primarily Linux based to bring additional value to their in-house and customer solutions. In co-ordination with the Head ...

Senior Data Engineer

Hiring Organisation
Sanderson Government and Defence
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent
help build and maintain a secure batch and real-time data platform for a government client. You'll work with modern commercial and open-source tools to ingest, transform, and deliver data to support analytics and decision-making. Duties & Responsibilities Build, test, and maintain data pipelines Design logical ...

AI / ML Researcher - Hybrid

Hiring Organisation
Anson Mccade
Location
Chelmsford, Essex, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
LangGraph or similar Ability to communicate technical concepts clearly to both technical and non-technical audiences Experience producing technical reports or research documentation Publications, open-source contributions or recognised research within AI/ML would be highly advantageous but not essential Must be eligible for Security Clearance ...

Back End Developer

Hiring Organisation
Consortia
Location
London, UK
shipping high-quality software and continuously improving through production learnings. You'll be working with technologies including: • Python • Node.js • PyTorch • OpenAI, Anthropic and open-source LLMs • SQL & NoSQL databases • Kubernetes • Docker You'll be joining a highly talented engineering team where you'll work on genuinely challenging technical ...

Senior Software Engineer Python

Hiring Organisation
Revolut
Location
South West London, London, United Kingdom
Employment Type
Permanent
bound situations Experience with Docker, K8s, Ansible, Teamcity, monitoring, and alerting Nice to have Experience with prototyping and sketching Multiple side projects or open source contributions Exposure ...

Back End Developer

Hiring Organisation
Consortia
Location
London Area, United Kingdom
shipping high-quality software and continuously improving through production learnings. You'll be working with technologies including: • Python • Node.js • PyTorch • OpenAI, Anthropic and open-source LLMs • SQL & NoSQL databases • Kubernetes • Docker You'll be joining a highly talented engineering team where you'll work on genuinely challenging technical ...

Back End Developer

Hiring Organisation
Consortia
Location
City of London, Greater London, UK
shipping high-quality software and continuously improving through production learnings. You'll be working with technologies including: • Python • Node.js • PyTorch • OpenAI, Anthropic and open-source LLMs • SQL & NoSQL databases • Kubernetes • Docker You'll be joining a highly talented engineering team where you'll work on genuinely challenging technical ...

Data Engineer (DV Clearable) - Up to £140,000 + Benefits

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Permanent
critical role in designing and building a secure, scalable data platform, enabling both batch and real-time data processing using modern commercial and open-source technologies. This is an excellent opportunity to work on mission-critical systems, solving complex data challenges in a highly secure environment. Key Responsibilities ...

Software Engineer - AI & Business Solutions

Hiring Organisation
Proactive Appointments
Location
Reading, Berkshire, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £60,000 per annum
process improvement initiatives. Exposure to systems integration, data engineering, business intelligence or cloud platforms. Consulting, business analysis or solution design experience. Personal projects, open-source contributions or experimentation with AI. What’s On Offer £40,000–£60,000 salary depending on experience. Discretionary bonus scheme. Remote or hybrid ...

AIML Engineer, AI for Science

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
software. Experience with Large Language Models (LLMs) and Agentic AI (e.g., tool use, multi‐agent orchestration, deployment and evaluation). Contributions to relevant opensource projects. Relevant scientific publications in AI/ML (e.g., NeurIPS, ICML, ICLR, AAAI), computational biology or bioinformatics venues. Knowledge of or interest ...

Graduate Technology & AI Innovation Associate

Hiring Organisation
Major Recruitment Telford
Location
Wellington, Shropshire, United Kingdom
Employment Type
Permanent
Salary
GBP 16 Hourly
approach. Desirable Experience with programming languages such as Python, JavaScript, C#, or similar. Knowledge of AI tools such as ChatGPT, Claude, Gemini, Copilot, or open-source AI models. Experience with automation platforms such as Power Automate, Make, Zapier, or n8n. Familiarity with databases, APIs, and data visualisation tools. ...

Graduate Technology & AI Innovation Associate

Hiring Organisation
Major Recruitment Telford
Location
TF2, Telford, Telford and Wrekin, Shropshire, United Kingdom
Employment Type
Permanent, Temporary
Salary
£16/hour
approach. Desirable Experience with programming languages such as Python, JavaScript, C#, or similar. Knowledge of AI tools such as ChatGPT, Claude, Gemini, Copilot, or open-source AI models. Experience with automation platforms such as Power Automate, Make, Zapier, or n8n. Familiarity with databases, APIs, and data visualisation tools. ...

Graduate Software Developer Programme

Hiring Organisation
Mortgage Brain
Location
London, United Kingdom
Employment Type
Permanent
modern software development and AI technologies Desirable Experience Examples may include: Personal coding projects GitHub portfolios Internships or placements University team projects Hackathons Open-source contributions Cloud or coding certifications Benefits: Flexibility Flexible hybrid working - split your time between the office and home working Buy holiday scheme - flexible ...

Lead Developer

Hiring Organisation
Disability Solutions
Location
Des Moines, Iowa, United States
Employment Type
Any
Salary
GBP Annual
work experience. Experience developing software using technologies such as Java, SQL, HTML, CSS, Angular, Bootstrap, Typescript, Node. Experience with Java 8 or beyond and open source frameworks (e.g., Spring Ecosystem, Hibernate, jUnit). Deep understanding of object-oriented design principles and patterns, application architecture, test driven development ...

Associate, Frontier Technology

Hiring Organisation
Fitch Group
Location
Manchester, United Kingdom
Employment Type
Full Time
content, playbooks, short guides, and knowledge-sharing materials that make emerging tech accessible to a broad audience. External Ecosystem: Support research on vendors, startups, open-source projects, and academic work; help maintain a view of the ecosystem and key developments. Knowledge Sharing: Contribute to presentations, internal posts ...

Site Reliability Engineer – Manchester

Hiring Organisation
BAE Systems
Location
Gloucestershire, United Kingdom
Employment Type
Full Time
different levels of the stack Understanding of ITIL terminology Experience with container management and micro-services architectures such as Docker Experience extending and improving Open Source Software Familiarisation with automation test frameworks such as Selenium Awareness and insight into technology trends to adopt new cutting edge tools ...

Mulesoft Integration Architect

Hiring Organisation
Capgemini
Location
Surrey, United Kingdom
Employment Type
Full Time
your considering We specialise in agile custom software development and integration at an enterprise scale. Our capabilities cover a wide variety of Integration, Open Source, Microsoft and proprietary technologies. We are seeking an experienced Mulesoft Integration Architect to deliver some of the largest, complex and most innovative enterprise ...

Principal Machine Learning Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
embedding models Experience with model serving frameworks (vLLM, TensorRT, Ray) Experience with A/B testing and experimentation frameworks for AI features Contributions to open-source ML projects or research publications Experience with model observability tools (LangSmith, W&B;, MLflow) DEIB Our Commitment to Diversity, Equity, Inclusionand Belonging ...

Digital Architect - Senior Manager

Hiring Organisation
Capgemini
Location
Glasgow City, United Kingdom
Employment Type
Full Time
model fine‐tuning. Demonstrating hands-on ability to assess technical feasibility of AI concepts through rapid prototyping, MVPs, cloud-native AI services, or open-source models. Explaining the limitations, risks and trade‐offs of AI models and designing mitigation strategies such as grounding, evaluation frameworks, guardrails and system ...