76 to 100 of 1,228 Permanent Open Source Jobs

Enterprise Account Executive (EMEA)

Location
Greater London, England, United Kingdom
build, deploy, and manage cloud infrastructure using the full power of software engineering. Pulumi’s go-to-market motion is anchored in a strong open-source, product-led growth (PLG) foundation, paired with meaningful investment in customer engagement and support. This combination creates a highly productive funnel … modern sales methodologies (e.g., MEDDICC, Challenger, SPIN) and a track record of disciplined, process-driven pipeline management. Experience selling SaaS, infrastructure software, DevOps, or open source technologies. Proven ability to establish credibility with both developers and executive leadership, driving alignment and buy-in across technical and business stakeholders. ...

Technical Product Strategist - Product Strategy & Innovation

Location
Greater London, England, United Kingdom
versus independent go-to-market strategies. Translate Market & Tech Paradigms: Track foundational shifts—including agentic coding, AI-native application architectures, supply chain automation, and open-source ecosystems—and translate them into clear, data-driven investment theses. Map Portfolio Gaps: Collaborate with strategy leads and product management to identify … leadership to adapt platform strategies for international markets, accounting for local regulatory frameworks and competitive landscapes. Evaluate Go-to-Market Models: Analyze monetization frameworks—open source, platform-bundled, standalone SaaS, API-first—balancing long-term revenue potential, developer adoption, and defensibility. Monitor Horizon Signals: Track venture capital activity ...

Senior Software Engineer – DevX SCAnS

Location
London, England, United Kingdom
these components come from? How will we know if any are defective? How can we protect Bloomberg from malicious actors while still benefiting from open source? These are the questions you’ll help us answer! The Software Composition Analysis and Security (SCAnS) team in DevX plays a foundational … role in securing Bloomberg’s software supply chain (SSC) by enabling engineers to use open source and third-party software safely, in an operationally resilient manner. Our products integrate with build and analysis systems to ensure software component metadata (such as SBOMs) is available throughout ...

Head of Community & Growth Marketing

Location
Greater London, England, United Kingdom
molecular modeling tools to make biology programmable and accelerate drug discovery, while keeping frontier capabilities broadly accessible. Boltz-1, Boltz-2, and BoltzGen are open models trusted by 100,000+ scientists across biotech and academia, and used in programs at every Top 20 pharma as well as leading agrichemical … molecules. About the role As Head of Community & Growth Marketing, you will build and scale Boltz’s community-led growth engine, converting a large open-source user base into active customers and enterprise pipeline. Boltz already has a highly engaged global community. Your role is to design ...

Manager - Sales Development Representatives (SDR) (London) - EMEA

Location
Greater London, England, United Kingdom
real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale. With $125M raised at Series … contributions can shape how this technology shows up in the real world. Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open ...

Demand Generation Lead

Location
Greater London, England, United Kingdom
real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale. With $125M raised at Series … contributions can shape how this technology shows up in the real world. Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open ...

Machine Learning Engineer

Location
City Of London, England, United Kingdom
with leading researchers, hardware experts, and software engineers to build robust solutions that maximize the potential of GPU acceleration, distributed computing, and the latest open-source tools. Your work will influence our trading strategies by accelerating experimentation cycles that foster continuous innovation and refinement. This is a unique … speed, and reduce costs Evaluate and roll out third-party tools to enhance model development, training, and inference capabilities Dig into the internals of open-source ML tools to extend their capabilities and improve performance Your Skills and Experience: 5+ years of experience in machine learning with ...

Marketing Lead

Location
Greater London, England, United Kingdom
About Trigger.dev Trigger.dev is an open source platform used by developers to build production-grade AI agents. It's an SDK and the infrastructure to run agents reliably at scale, so teams can focus on the product instead of the plumbing. Our Cloud product is a managed service … done, but to also quickly raise your hand if you need help We care about our customers and the open-source community Being a start-up, the work is challenging and fast-paced, but we also understand the importance of taking time off to recharge Working ...

VP of Engineering (remote)

Hiring Organisation
Phoenix Global Search
Location
London, United Kingdom
Employment Type
Permanent
Engineering: Java Open-Source Data Infrastructure Package: £175k - £217k base + 15% bonus + options Location: UK remote-first. My client, a profitable, Series-D software company (circa 110 people, $40-45M ARR) behind one of the most widely-used open-source real-time data … levels deep: distributed systems, low-latency engineering, JVM performance, stream processing, or storage and replication internals. You've probably written or contributed to Java open source, spoken at conferences, and within the last couple of years you've personally worked a hard technical problem, not just funded one. ...

VP of Engineering

Hiring Organisation
Phoenix Global Search
Location
Nationwide, United Kingdom
Employment Type
Permanent
Salary
£175000 - £217000/annum + Bonus + options
Engineering: Java Open-Source Data Infrastructure Package: £175k - £217k base + 15% bonus + options Location: UK remote-first. My client, a profitable, Series-D software company (circa 110 people, $40-45M ARR) behind one of the most widely-used open-source real-time data … levels deep: distributed systems, low-latency engineering, JVM performance, stream processing, or storage and replication internals. You've probably written or contributed to Java open source, spoken at conferences, and within the last couple of years you've personally worked a hard technical problem, not just funded one. ...

Enterprise Sales Leader (UK-based)

Location
Greater London, England, United Kingdom
orchestration of your wildest imagination. n8n is the open workflow orchestration platform built for the new era of AI. We give technical teams the freedom of code with the speed of no-code, so they can automate faster, smarter, and without limits. Backed by a fiercely inventive community … native or bilingual speaker of English. Technical-buyer credibility: You have experience selling into technical stakeholders and navigating evaluation-heavy sales motions. Open-source/PLG experience: You understand how community and bottoms‐up adoption influence enterprise outcomes and how to partner with that motion. Nice-to-haves ...

Account Executive (Existing Accounts)

Location
Greater London, England, United Kingdom
About Aiven Aiven is the open source based data platform that builders trust to run PostgreSQL®, Apache Kafka®, ClickHouse®, OpenSearch®, ValkeyTM and more in production, on any cloud. Builders ship faster. Their companies run on data that stays available, secure and under control. The role … into proof for the next customer. You spot risk early, and find the next use case before the customer asks for it. You also open new doors: cold and warm outreach into accounts that look like your best customers, from first conversation through close. You lead with AI from ...

Enterprise Architect - AI

Location
Greater London, England, United Kingdom
trail, and approval‐gate processes for production AI systems. Security & Cloud AI‐specific security fundamentals: model security, prompt‐injection defenses, supply chain security for open‐source/open‐weight models. Solutions‐architect level expertise in at least one hyperscaler (AWS, Azure, or GCP), including their native …/AI/ML or related) beneficial but not required given sufficient hands‐on depth. Continuous, demonstrable learning in AI — publications, open‐source contributions, conference speaking, or lab‐based experimentation are all valued signals. WWT is an Equal Opportunity Employer Employment decisions are made without regard to race ...

Senior Software Engineer, Security Assurance | UK | Remote

Location
United Kingdom
fully managed observability platform trusted by more than 10,000 organizations to ensure reliability, resolve incidents faster, and optimize telemetry at scale. Built on open source and open standards and designed for interoperability across any stack, Grafana Cloud brings AI to observability and observability to AI, giving … Capital. Learn more at grafana.com and follow us on LinkedIn and X.We’re scaling fast and staying true to what makes us different: an open-source legacy, a global collaborative culture, and a passion for meaningful work. Our team thrives in an innovation-driven environment where transparency, autonomy ...

Senior Software Engineer (Customer Platform) New United Kingdom - Remote

Location
United Kingdom
Senior Software Engineer (Customer Platform) United Kingdom - Remote Chainguard is the trusted source for open source. By delivering hardened, secure, and production-ready builds of all the open source software engineers and AI agents rely on, Chainguard helps organizations build faster, stay compliant, and eliminate risk. … span multiple products or customer experiences. Experience in the cloud-native, containers, or security ecosystem, or with tools in the broader CNCF space. Meaningful open source contributions, especially as a maintainer or regular contributor in relevant projects. About Us We live and breathe our company values ...

Java Software Engineer

Location
City Of London, England, United Kingdom
digital transformation engagements. Experience and Skills Excellent hands‐on experience with Java and associated technologies. Experience working with Spring Boot. Hands‐on knowledge of open‐source tools, libraries and standards. Some working knowledge of containers (Docker). Strong experience of working in Test Driven Development, test coverage, unit … Knowledge of both traditional and agile delivery methods. Drive and desire to further your skillset and lead in the application domain. Good knowledge of Open source and open standards. Strong analytical skills and attention to detail. Knowledge and demonstrable experience of both traditional and agile delivery methods. ...

Java Software Engineer

Location
Greater London, England, United Kingdom
experience in the following skills Excellent hands-on experience with Java and associated technologies. Experience working with Spring Boot. Hands-on knowledge of open-source tools, libraries and standards. Some working knowledge of containers (Docker). Strong experience of working in Test Driven Development, test coverage, unit tests … Knowledge of both traditional and agile delivery methods. Drive and desire to further your skillset and lead in the application domain. Good knowledge of Open source and open standards. Strong analytical skills and attention to detail. Knowledge and demonstrable experience of both traditional and agile delivery methods. ...

Java Developer

Hiring Organisation
Sanderson Recruitment
Location
United Kingdom
Employment Type
Permanent
experience in the following skills Excellent hands-on experience with Java and associated technologies. Experience working with Spring Boot. Hands-on knowledge of open source tools, libraries and standards. Some working knowledge of containers Strong experience of working in Test Driven Development, test coverage, unit tests, feature tests … Continuous Delivery. Good knowledge of non-functional drivers for design, including an ability to performance tune, profile, and debug applications. Good knowledge of Open source and open standards. This role will require you to be willing and eligible to undergo UK security clearance. If you're interested ...

Senior Consultant, OpenShift Infrastructure and Virtualisation

Location
Greater London, England, United Kingdom
with VMware ESXi software, including vCenter, vSan, NSX.Fluency in English required. About Red Hat Red Hat is the world's leading provider of enterpriseopen source software solutions, using a community-powered approach to deliver high-performing Linux, cloud, container, and Kubernetes technologies. Spread across 40+ countries, our associates work … requirements of their role.Red Hat ters are encouraged to bring their best ideas, no matter their title or tenure. We're a leader in open source because of our open and inclusive environment. We hire creative, passionate people ready to contribute their ideas, help solve complex problems ...

Lead Ai Engineer (Contract)

Location
Newcastle upon Tyne, England, United Kingdom
associate or professional level) - Prior delivery of AI or digital services within UK central government or wider public sector - Experience fine-tuning or adapting open-source/foundation models for a specific domain - Open-source contributions or active engagement in AI/ML engineering communities - Experience ...

Lead AI Engineer- Permanent

Hiring Organisation
scrumconnect ltd
Location
City, Newcastle Upon Tyne, United Kingdom
Employment Type
Permanent
Salary
GBP 95,000 - 100,000 Annual
associate or professional level) Prior delivery of AI or digital services within UK central government or wider public sector Experience fine-tuning or adapting open-source/foundation models for a specific domain Open-source contributions or active engagement in AI/ML engineering communities Experience ...

Senior Fullstack Engineer (Payments Experience)

Location
Greater London, England, United Kingdom
across international teams. Why Join Us? Competitive Package: Attractive salary + discretionary performance bonus. Continuous Growth: Dedicated funding for professional certifications, training, and conferences. Open Source First: We embrace open-source principles internally and actively encourage contributions to the wider developer community. About us Ebury delivers ...

Software Engineer, New Grad - Infrastructure

Location
Greater London, England, United Kingdom
technical team members. Willingness to learn and make decisions independently, and the ability to ask questions effectively. Eagerness to delve into the source code of open-source libraries (such as Cassandra or Chromium) to truly understand how they work or to debug an issue. Staying … date with recent industry practices and advancements in open-source technology. What We Require Engineering background in fields such as Computer Science, Mathematics, Software Engineering, or Physics. Familiarity with data structures, storage systems, cloud infrastructure, frontend frameworks, and other technical tools. Experience coding in programming languages, such ...

Senior Corporate Counsel (UK)

Location
United Kingdom
down. Bonus tacos if you have (Tacos? If you need an ice-breaker, ask how we say thanks by giving tacos!) Experience working with open source software or open source licensing. About Coder Coder is the leading platform for AI development Infrastructure, enabling enterprises to securely ...

Lead Consultant – Golang

Location
Burgess Hill, England, United Kingdom
PostgreSQL, Couchbase, or Cassandra GitHub Actions, Jenkins, or GitLab CI CI/CD and automated build and test frameworks JIRA and Confluence Experience with open-source frameworks or open-source contributions Payments industry experience Experience with multiple programming languages and payment technologies #J-18808-Ljbffr ...