Average salary: £67,995 /yearly
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£70k - £90k per annum
...versioning software such as GIT ~ Experience contributing to open-source projects, even if they are your own ~ Fluency in English ~... ...work well within a small team Bonuses Experience developing cross-platform apps for desktop, web, and mobile Experience...SuggestedPermanentRemote£62k - £72k per annum
...the Mozilla Foundation and home to Thunderbird , our flagship open-source email and productivity platform empowering more than 20 million... ...Corporation. Everything we build at MZLA is open source, developed transparently and in collaboration with a global community of contributors...SuggestedPermanentFull-timeRemote- £45k - £60k per annumEstimated...the business of gaming. Experience in a startup or fast-paced environment. A track record of side projects, experiments, or open-source contributions. Interest in building things from 0 to 1—and being part of a long-term product vision. What We Offer The chance...SuggestedRemote jobLong-term contractFull-timeLive-inFlexible hours
- £37k - £49k per annumEstimated...components of the toolchain to meet the clients needs; extend the open source LLVM, Clang, binutils code bases to support the client's... ...platform specific tests, analyze and identify system level issues; develop new and maintain the existing target specific tests....SuggestedLong-term contractFull-timeRelocation packageFlexible hours
- £67k - £88k per annumEstimated...LangChain, Pinecone, and anything else that helps us move fast Develop, optimize, and maintain AI agent workflows, ensuring high-... ...experience ~ Fluency with APIs like OpenAI, Gemini, Claude along with open-source foundation models ~ Familiarity with the intersection of...SuggestedRemote jobFull-time
- £68k - £90k per annumEstimated...market and client data for over $7 trillion in assets. Addepar’s open platform integrates with more than 100 software, data and services... ...that enable seamless integration of internal and external data sources, support complex client data transformations, and unlock powerful...SuggestedRemote jobFlexible hours
£80k - £90k per annum
...Kubernetes on GCP, with infrastructure defined by Terraform and source code managed through GitLab. The ideal engineer will be experienced... ...role although the team do also provide a London office which is open to those who prefer an office environment. Enjoy a competitive salary...SuggestedRemote jobPermanentOn-site- £64k - £84k per annumEstimated...maintenance. Stay updated with the latest developments in C# and related technologies.... ...Experience with SQL and NoSQL DBMS Modern source control system (for example GitHub) Experience... ...in to receive emails when we have job openings that meet your criteria. Join our talent...SuggestedRemote job
$75k - $100k per annum
..., mostly in that order. You will be working with engineers and developers on the mobile team within our org, Dash Core Group. This is an... ...can have oversized impacts and drive innovation. Work in an open-source environment. Location / compensation This is a fully remote...SuggestedFull-timeRemote- £67k - £86k per annumEstimated...and maintain the XenServer control plane (XAPI) . Research, develop, and implement performance optimizations across the XenServer... ...and robust API design. Collaborate with and contribute to open-source projects , including Xen, the Linux kernel, and XAPI. Lead...SuggestedRemote job
- £75k - £99k per annumEstimated...automated. Collaborate across teams to uncover pain points in the developer journey and lead the integration of intelligent agents and... ...skills across technical and non-technical teams. Open-source contributions or experience with AI/ML libraries, agent frameworks...SuggestedRemote job
- £52k - £67k per annumEstimated...Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform... ...the globe. Our community represents the full breadth of the developer experience; from students, hobbyists and freelancers to high performance...SuggestedFull-timeFreelanceOn-siteRemote
$190k - $260k per annum
...Lightspeed, Redpanda is building the streaming data platform for developers. We’re evolving streaming beyond the Apache Kafka® protocol... ...100% distributed engineering team, collaborating on GitHub, in open source Excellent written and verbal communication skills Please...SuggestedRemote job- £51k - £68k per annumEstimated...services across the UK. This role offers the opportunity to design, develop, and maintain critical systems that improve accessibility and... ...GDS (Government Digital Service) standards and contribute to open-source initiatives where applicable. Requirements: Frontend:...SuggestedRemote jobFull-timeFlexible hours
- £35k - £47k per annumEstimated...Canada, the U.K., and Europe. At Ameresco, we show the way by developing, constructing and operating tailored smart energy efficiency... ...sustainability and success for our customers. Ameresco has an immediate opening for a Front-End Developer in our ASG (Asset Sustainability Group...SuggestedRemote jobLong-term contractImmediate start
£80k - £85k per annum
...benefits, including health insurance, pension, gym membership, life assurance, 25 days holiday, and your birthday off. We offer a collaborative, globally distributed engineering culture built on openness, accountability, and continuous improvement. last updated 20 week of 2026...Remote jobLong-term contractPermanentFull-timehireful
Remote3 days ago- £69k - £92k per annumEstimated...Senior Front End / Lead Developer The Company: At Amber Labs, we are a cutting-edge UK and European technology consultancy that prioritises... ...for a proactive individual who is passionate about technology, open to continuous learning, and eager to embrace experimentation...Remote jobFull-timeFlexible hours
- £52k - £68k per annumEstimated...As a Senior Software Engineer I, you will play a vital role in developing new features & products and helping to maintain and update our... ...user interfaces, or other challenging engineering problems ~ Open source contributions ~ You’ve helped make your work environment fun,...Remote jobHybrid workingFlexible hours
- £46k - £61k per annumEstimated...Title: ETL Developer (IICS) Work Type: Remote Work Duration: 1+ Year Contract Rate: $Open (Best Possible) Requirements Job description: ~3+ years ETL experience... ...Integration. ~ Experience in integrating multiple sources into a centralized data platform or...Remote job
- £49k - £65k per annumEstimated...XenServer Toolstack About the role This Software Engineering position focuses on developing the control plane for XenServer, a commercial virtualization platform built on the open-source Xen hypervisor. The control plane is a critical component that manages virtual...Remote job
$113.08k - $175.73k per annum
...importance of testing and documentation, and common pitfalls in developing secure web applications. You have a passion for the WMF mission... ...with MediaWiki or Wikimedia projects Contributions to open-source software About the Wikimedia Foundation The Wikimedia Foundation...PermanentFull-timeRemote- £55k - £73k per annumEstimated...Title – Sr. Front End Developer (React.js) Position – 6+ Months Contract Location – 100% Remote Work Rate - $Open (Best Possible) Skills : html5 / css3 / js (es6) / json / git / CLI / reactjs / react hooks Responsibilities: Strong initiative and a collaborative...Remote job
- £42k - £55k per annumEstimated...collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their... ...complex systems and creating experiences that balance developer power with user trust. You’ll work deep in the Gecko platform to...Full-timeImmediate start
- £50k - £64k per annumEstimated...domain is a strong plus — you don't need to be a security researcher, but curiosity about vulnerabilities, threat intelligence, and the open-source ecosystem will help you thrive. You should care about building for builders — often non-technical people using no-code, low-code,...Long-term contractFull-timeRemoteWork from home
- £51k - £67k per annumEstimated...innovation, technology, and play to explore our open positions and join our growing global team... ...closely with other dedicated Software developers, ML engineers and Integration specialists... ...inference, contributions to GenAI open-source projects Equal Opportunity Statement:...Remote job
- £51k - £67k per annumEstimated...packages, and vehicles everywhere. More than 3.5 million registered developers have chosen Mapbox because of the platform’s flexibility,... ...their daily lives. We work on state-of-the-art platforms, largely open-source, for map interaction and visualization used by millions of...Remote job
£91.76k - £110.11k per annum
...Engineer - Grafana k6 The Opportunity: At k6, we build reliability and performance testing tools for developers and QA engineers. Grafana k6is an open-source project focused on making performance testing practical, approachable, and useful in real-world engineering...Long-term contractFull-timeRemote£55k - £70k per annum
...project variety, Vue, Nuxt, AI. We’re looking for a Front-End Developer who’s well-versed in Vue, Nuxt, Typescript with a keen interest... ...security, and testing best practices. Good communication skills and openness to feedback and mentoring. What you’ll be doing You’ll be...Remote jobPermanentImmediate start- £81k - £108k per annumEstimated...opportunities, especially with a focus around new AI tools and methods. We have a culture that puts our people first. We believe in open communication, creativity and the value of unique contributions from everyone in the team. The selection process HR interview...Remote job
£75k - £90k per annum
...to demonstrate at least 5 - 7 years of experience as a Backend developer, ideally within a scaling business. Demonstrable proficiency... ...have an appreciation for the pros and cons of ideas like event sourcing, branch-by-abstraction or BDD Have experience of working with...Full-timePart-timeRemoteWork from home
