23 of 23 Remote Open Source Jobs in the South East

s your chance to take full ownership of frontend projects from design to delivery with minimal supervision! About Ballerine Ballerine is a high-growth, early-stage startup building an open-source platform for identity verification and risk management in the financial sector. It’s a fast-paced team preparing for Series A funding — and looking for a Senior … in React, TypeScript, modern frontend frameworks and architectures • Strong understanding of state management, performance optimization, and scalable component-driven design • Experience with testing frameworks (Jest, Cypress, Playwright) • Comfort with open-source principles and contributions • Clear, confident communication in English (minimum C1, no heavy accents) • Ability to onboard quickly and deliver at startup pace • Proactive, independent, and ownership-driven … Chance to join a core team pre-Series A, shaping the product and the company’s direction • Work on complex, high-scale challenges with cutting-edge tools (LLMs, AI, open-source) • A culture where your voice matters — small team, high impact, no bureaucracy • Opportunities for technical leadership and direct influence on strategy • Fully remote role Responsibilities • Architect, develop More ❯

component, functional, system integration and regression tests. - Experience working with Git on small to medium sized teams. - Experience designing and developing REST APIs for high volume clients. - Experience with open-source frameworks is a plus especially maintaining or contributing to open source projects! - Experience with container and container orchestration technologies, such as Docker and Kubernetes. - Comfortable More ❯

practices, performs triaging of security issues, and implements fixes to deliver secure applications. Familiar with common software vulnerabilities and leading practices to mitigate. Should have some experience in researching open- source technologies for use in building systems and participate in open source communities as needed. Works on projects of moderate scope and complexity. Pro-actively identifies More ❯

security in line with ISO27001 and Cyber Essentials Plus Development and maintenance of AI system focused on intelligence analysis and processing Development and maintenance of the data repositories, including source, geospatial and open-source intelligence Liaise with client stakeholders within various defence organisations Requirements: understand how to apply it to improve client operations, specifically situational awareness and More ❯

infrastructure architecture is a plus. Understanding of modern authentication protocols such as OAuth2 and OIDC. Consideration of cross-cutting concerns like observability and security in infrastructure design. Contributions to Open Source projects are a plus. As an equal opportunity employer we welcome applications that reflect the diversity of our wider community. Please let us know at any time … being a nice person Truly flexible working hours - school pick up, volunteering, gym - no problem Generous leave - 27 days’ holiday plus bank holidays and enhanced family leave Transparent and open culture - you will be listened to and heard More ❯

Office/Remote Reporting to: Engineering Manager Job Purpose: We are seeking innovative Linux Systems Engineer to help shape the next generation of secure endpoint solutions. This role is open to both experienced engineers ready to tackle complex challenges and mid-level engineers eager to learn, grow, and innovate. You will work at the intersection of Linux internals, networking … C programming skills for low-level or performance-critical development. Experience with containerisation (Docker, Kubernetes). Familiarity with endpoint security, intrusion detection, or system hardening. Contributions to Linux or open-source projects. Experience with debugging, profiling, or performance optimisation tools. Why Join Us Shape the future of secure endpoint technology. Work on high-impact projects for global, high More ❯

engineering teams to streamline developer workflows. Ensure scalability, security, and usability of the developer portal. Provide technical guidance, documentation, and training for engineering teams adopting Backstage. Contribute to Backstage open-source ecosystem (where applicable). Profile The Spotify Backstage Developer will have strong experience in TypeScript/JavaScript (React knowledge highly desirable). Experience working with Spotify Backstage More ❯

Proven track record of delivering and maintaining real-time embedded systems in C/C++ Strong programming skills in C and C++. Solid understanding of embedded Linux development and open-source toolchains. Knowledge of common communication protocols, including TCP/IP, UDP, RS-485, SPI, and I2C Desirable: Experience developing embedded firmware on Linux-based systems. Familiarity with More ❯

on a regular basis (typically every two weeks). What You'll Do Design, develop, and test high-quality software solutions. Work across diverse technologies, with a focus on open-source frameworks and tools. Use CI/CD pipelines (GitLab or similar) to drive secure, reliable, and maintainable code. Deploy applications across a variety of cloud platforms, including More ❯

Plan, Provide & Assure functions Own development and solution architecture targets and roadmaps Allocate tickets to squads and support sprint shaping Provide strategic updates to key stakeholders Explore new libraries, open-source tools, and frameworks to drive efficiencies Mentor and develop teams, arranging training where appropriate Promote data-driven decision-making and agile planning Deliver synergies across both fixed More ❯

Plan, Provide & Assure functions Own development and solution architecture targets and roadmaps Allocate tickets to squads and support sprint shaping Provide strategic updates to key stakeholders Explore new libraries, open-source tools, and frameworks to drive efficiencies Mentor and develop teams, arranging training where appropriate Promote data-driven decision-making and agile planning Deliver synergies across both fixed More ❯

the delivery of large-scale, complex, and innovative enterprise digital projects. The work involves agile custom software development and integration at an enterprise scale, using a mix of integration, open-source, and proprietary technologies. Working Model This is a hybrid role. Your working locations will vary depending on project needs and may include offices, client sites, and your More ❯

the future of public sector tech. What You'll Be Leading Build and evolve automated test frameworks across UI & API layers Integrate testing into CI/CD pipelines using open-source tools like Selenium & Java Champion agile testing practices : TDD, BDD, ATDD Lead exploratory and non-functional testing : performance, security, accessibility Collaborate with cross-functional teams to refine More ❯

a difference in national-scale systems. What You'll Be Doing: Building robust automated test frameworks across UI & API layers Driving continuous testing in CI/CD pipelines using open-source tools (Selenium, Java) Championing agile practices like TDD, BDD, and ATDD Leading exploratory and non-functional testing (Security, Performance, Accessibility, OAT) Collaborating with QA teams to evolve More ❯

drive automation excellence at scale. What You'll Be Driving: Building powerful, scalable automated test frameworks across UI & API layers Embedding continuous testing into CI/CD pipelines using open-source tools (Selenium, Java) Championing agile methodologies like TDD, BDD, and ATDD Leading exploratory and non-functional testing (Security, Performance, Accessibility, OAT) Collaborating with cross-functional QA teams More ❯

The team thrives on solving complex operational challenges with bespoke technical solutions. Key Responsibilities: Design and implement automated test frameworks across UI & API Perform manual and automated testing using open-source tools (e.g., Selenium, Java) Apply agile methodologies including TDD, BDD, ATDD Contribute to CI/CD pipelines and support exploratory testing Engage in non-functional testing (Security More ❯

cycles. An interest in processing technologies: software, hardware, and algorithms together with their use and application. Experience of using debuggers and performance analysis tools would be advantageous. Knowledge of open-source software. Experience of working in Unix/Linux environment. Ability to capture software requirements and produce appropriate implementations. Software testing experience. Familiarity with scripting languages - e.g. , bash More ❯

an Integration Engineer or Integration Consultant. An excellent understanding of a wide range of integration strategies and techniques across a diverse mix of technology environments and architectures, from fully open source/bespoke environments through to fully proprietary, Enterprise and COTS-based. Experience of working with iPaaS platforms in an Enterprise environment from either independent vendors (such as More ❯

an Integration Engineer or Integration Consultant. An excellent understanding of a wide range of integration strategies and techniques across a diverse mix of technology environments and architectures, from fully open source/bespoke environments through to fully proprietary, Enterprise and COTS-based. Experience of working with iPaaS platforms in an Enterprise environment from either independent vendors (such as More ❯

to senior leadership and the board What we're looking for: Strong track record managing complex tech or digital transformation projects Excellent stakeholder engagement and communication skills Experience with open-source platforms and Agile delivery Industry experience in entertainment, ticketing, or CRM systems is a bonus This is your chance to make a real impact on a transformational More ❯

investment in tech & tools, free hot food cooked in the company owned restaurant, nights out, spa breaks and much much more! Who are you? You will need expertise in open source and object-oriented programming. This product is built on Python, Django, HTML, CSS and JavaScript and you will get to leverage the best available technology to build More ❯

behaviour cloning in robotics or autonomous driving. Nice to Have Deployment experience on humanoid or legged robots. History of shipping AI models to real robots or vehicles. Research or open-source contributions in multi-modal transformers, diffusion control, or world models . Familiarity with frameworks such as OpenVLA or Physical Intelligence (p) . Whats on Offer Competitive salary More ❯

behaviour cloning in robotics or autonomous driving. Nice to Have Deployment experience on humanoid or legged robots. History of shipping AI models to real robots or vehicles. Research or open-source contributions in multi-modal transformers, diffusion control, or world models . Familiarity with frameworks such as OpenVLA or Physical Intelligence (p) . Whats on Offer Competitive salary More ❯