11 of 11 Open Source Jobs in Hertfordshire

Java Software Engineer | Remote | $140/hr

Hiring Organisation
Mercor
Location
Watford, Hertfordshire, UK
research labs. Headquartered in San Francisco, our investors include Benchmark, General Catalyst, Peter Thiel, Adam D'Angelo, Larry Summers, and Jack Dorsey. Position: Open Source Contributor Type: Part-time Compensation: $80–$140/hour Location: Remote Commitment: Flexible hours Role Responsibilities Design and oversee the creation of evaluations … independently to identify areas for contribution and execute improvements with minimal oversight. Qualifications Must-Have Strong GitHub presence with high-quality contributions to top open-source projects in the last 12 months. Expertise in Python, Java, C, JavaScript, or TypeScript. Familiarity with widely-used libraries, frameworks, and tools ...

Director, Regional Sales - New Business EMEA

Hiring Organisation
GitLab
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
GitLab is an open-core software company that develops the most comprehensive AI-powered DevSecOps Platform, used by more than 100,000 organizations. Our mission is to enable everyone to contribute to and co-create the software that powers our world. When everyone can contribute, consumers become contributors, significantly … Director, Regional Sales New Business, you'll build and lead a dedicated new logo function across EMEA. You'll focus on bringing GitLab's open source, DevSecOps, and SaaS platform to first-time customers. You'll report to the Vice President for New Business ...

Senior Technical Project Manager

Hiring Organisation
Mercor
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
research labs to transform software development and management. Work independently and asynchronously to meet project goals. Leverage technical skills in code agents and open-source environments. Qualifications Must-Have 3+ years of experience in software product or project management. Strong technical background with code agents in open-source code bases. Degree in Computer Science, Engineering, or related field from a prestigious university in the U.S., Canada, or the U.K.. Exceptional attention to detail and analytical rigor. Excellent written and verbal communication skills. Start Date Immediate start; applications reviewed on a rolling basis. Compensation & Legal Hourly ...

Senior Application Security Specialist

Hiring Organisation
hackajob
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
penetration testing to assess the effectiveness of security measures. The Information Security department is responsible for the security and risk management of closed source, open source and proprietary applications throughout development and implementation. Utilising your knowledge of secure development lifecycles and code assessment, you will work with … either web applications or infrastructure. Strong understanding of and demonstrable experience with automated, dynamic, and static application security testing tools. Knowledge and understanding of Open Web Application Security Project (OWASP) and its utilisation within threat modelling. Experience of software development and languages. Working knowledge of CI/CD pipelines ...

Principal Applied AI Engineer

Hiring Organisation
Colibri Digital
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
retrieval-augmented generation (RAG), or similar architectures into production systems. Strong background in consultancy, digital transformation, or multi-industry project delivery. Contributions to open-source projects or AI engineering communities. What you can expect from us: Remote-first working with flexibility around client needs. Private health insurance Projects ...

Software Engineer, Build Compute

Hiring Organisation
Vercel
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
underlying compute infrastructure that powers all of these builds at scale. You'll be responsible for transforming the performance of builds, working with open source authors to understand the requirements of their frameworks. If you're based within a pre-determined commuting distance of one of our offices ...

Full Stack JavaScript Developer (Mobile and Web)

Hiring Organisation
ExpenseIn
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
written and verbal). Knowledge of automated testing tools and frameworks would also be beneficial, along with exposure to DevOps, technical documentation writing and open-source work. Why work with us? As a forward-thinking, collaborative company, we combine drive, energy, and ambition with a friendly, supportive culture ...

Full Stack JavaScript Developer (Mobile and Web)

Hiring Organisation
ExpenseIn
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
written and verbal). Knowledge of automated testing tools and frameworks would also be beneficial, along with exposure to DevOps, technical documentation writing and open-source work. Why work with us? As a forward-thinking, collaborative company, we combine drive, energy, and ambition with a friendly, supportive culture ...

Intermediate Backend Engineer (Go), Verify: CI Functions Platform

Hiring Organisation
GitLab
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
GitLab is an open-core software company that develops the most comprehensive AI-powered DevSecOps Platform, used by more than 100,000 organizations. Our mission is to enable everyone to contribute to and co-create the software that powers our world. When everyone can contribute, consumers become contributors, significantly … product. What you'll bring Proficiency in developing backend services in Go and applying Go best practices in production, whether gained through professional work, open-source contributions, or other hands-on experience. Ability to design and build scalable, distributed systems and services that can grow with increasing demand ...

AI Software Engineer II

Hiring Organisation
Planet DDS
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
degree in Computer Science, Machine Learning, Artificial Intelligence, or related field Experience working in a SaaS or enterprise software environment Publications or contributions to open-source AI/ML projects Exposure to reinforcement learning, generative AI (LLMs, diffusion models), or real-time inference systems JOB CODE ...

Senior Software Engineer

Hiring Organisation
Platformed
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
experience in Software Engineering, building customer-facing applications where you spoke directly to users. can demonstrate proficiency using Rust in a professional or open-source context. is able to spend at least 2 days (Monday + Tuesday) per week at our office in Central London. Company Benefits Every ...