Open Source Jobs in London

76 to 100 of 350 Open Source Jobs in London

Solution Engineer London, UK (Remote)

London, United Kingdom
Hybrid / WFH Options
Ably Realtime Ltd
platforms, and modern CI/CD practices. Experience working with Sales teams using MEDDICC methodology. A strong online technical presence such as GitHub projects, blog posts, or contributions to open-source tools. A product mindset. You don't just solve the immediate problem; you think in terms of reusability, scale, and system design. What's it like to … an amazing opportunity ahead of us, and we want anyone to be able to contribute to that opportunity. If you enjoy working as part of a technology company, value open source, and love solving hard problems - then we'd love to hear from you, regardless of whether you fit the job description exactly or not. If in doubt More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Account Executive London, UK (Remote)

London, United Kingdom
Hybrid / WFH Options
Ably Realtime Ltd
and engineering leaders, in conjunction with the SE team. We'd love to talk if you have 3+ years experience in a high-growth environment, ideally within developer tooling, open source or PaaS/IaaS. Comfort and confidence in outbound sales and cold calling, with a bias toward proactive pipeline generation. A track record of success in selling … an amazing opportunity ahead of us, and we want anyone to be able to contribute to that opportunity. If you enjoy working as part of a technology company, value open source, and love solving hard problems - then we'd love to hear from you, regardless of whether you fit the job description exactly or not. If in doubt More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Web3 Technical Lead - DeFi

London, United Kingdom
Hybrid / WFH Options
Trilitech
Our Technology Tezos is an open-source blockchain known for its flexibility, security, and unique self-evolving capabilities. With innovations like Etherlink -an EVM-compatible Layer 2-Tezos is scaling rapidly and attracting a growing developer community. Its ecosystem supports diverse projects, from Uranium.io , a decentralized marketplace for tokenized uranium, to leading digital art platforms like and fx … to both devs and product stakeholders. Passionate and opinionated about Web3 and the decentralized finance movement. Nice to have Experience in DevRel/DevOps/Front-end roles. Previous open-source contributions. Familiarity with multi-chain deployments (Polygon, Arbitrum, Optimism, etc.). Knowledge of off-chain scripting (bots, keepers, data pipelines). What you can expect from us More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior, Technical Product Marketing - Paris / London / Palo Alto / New York

London, United Kingdom
Mistral AI
AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life. We democratize AI through high-performance, optimized, open-source and cutting-edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise needs, whether on-premises or in cloud environments. Our offerings include … to make AI ubiquitous and open. We are passionate about bridging the gap between technology and businesses of all sizes. We are a leading innovator in the field of open-source large language models. Our advanced LLM solutions can be seamlessly deployed on any cloud, allowing for optimized integration and robust performance. Developers are using our API via More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Solution Architect

London, United Kingdom
Hybrid / WFH Options
The Dot Collective
architectures. Be able to describe the structure and behaviour of the technology platform that underpins user applications and understand on-premise, Cloud hosting and end-user compute Knowledge of open source, open standards and cloud technologies An understanding of architectural concepts, methodologies and approaches Knowledge and demonstrable experience of both traditional and agile delivery methods Effectively explain More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Mid-Market Account Executive - France (French Speaker)

London, United Kingdom
Hybrid / WFH Options
Sonar
hard to help organizations build responsible, secure, high-quality code quickly and systematically. We build solutions that don't just solve symptoms of problems - we fix problems at the source - source code, to be specific. We have a dynamic culture with employees worldwide and hub offices in the USA, Switzerland, the UK, Singapore, and Germany. We believe team … come to work every day, work on a product they are proud of, love what they do, and feel energized by their peers. With our roots deep in the open source community, we're all about the mission: provide solutions that deliver Clean Code. Do you want to sell a great product that customers use and love? Do More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Technical Sourcer (FTC & Perm)

London, United Kingdom
Hybrid / WFH Options
Intercom
hiring managers to deeply understand team needs, technical requirements, and ideal candidate profiles. Proactively identify and engage passive candidates through innovative sourcing methods-including GitHub, GoogleScholar, Stack Overflow, arXiv, open-source communities, tech events, and bespoke search strategies. Experiment with and implement new sourcing tools, outreach methods, and engagement tactics to increase pipeline quality and diversity. Act as … talent globally. A strategic mindset with a proactive approach to talent discovery-you don't wait for reqs to get started. Expertise in sourcing beyond LinkedIn (e.g. GitHub, Kaggle, open-source projects, technical blogs, conferences, custom Boolean strings). Strong communication and storytelling skills-you know how to craft compelling outreach messages that resonate with technical candidates. Ability … a great culture while still providing flexibility to work from home. We expect employees to be in the office at least three days per week. We have a radically open and accepting culture at Intercom. We avoid spending time on divisive subjects to foster a safe and cohesive work environment for everyone. As an organization, our policy is to More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Enterprise Account Executive

London, United Kingdom
Hybrid / WFH Options
Flowable Group
Enterprise Account ExecutiveLondon, United Kingdom Flowable is a leading provider of open-source Intelligent Business Automation that combines the power of Process, Case and Decision management into an enterprise-ready unified platform. Effortless integration, fast-time-to-market, and unmatched flexibility, make Flowable the top choice for companies worldwide to drive operation excellence and lead transformation. As an … related industries Experience with Sales Methodologies like MEDDPICC and PANT Well-connected with a large network across the enterprise market, ideally in the financial services space Previous experience with open-source products, subscription-model software, or BPM sales is a significant plus What you can expect: You will enjoy flexible working-hours, training, and remote working; however, we More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Enterprise Account Executive

London, United Kingdom
Hybrid / WFH Options
Flowable Group
Senior Enterprise Account ExecutiveLondon, United Kingdom Flowable is a leading provider of open-source Intelligent Business Automation that combines the power of Process, Case and Decision management into an enterprise-ready unified platform. Effortless integration, fast-time-to-market, and unmatched flexibility, make Flowable the top choice for companies worldwide to drive operation excellence and lead transformation. As … related industries Experience with Sales Methodologies like MEDDPICC and PANT Well-connected with a large network across the enterprise market, ideally in the financial services space Previous experience with open-source products, subscription-model software, or BPM sales is a significant plus What you can expect: You will enjoy flexible working-hours, training, and remote working; however, we More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Tech Lead/Technical Manager

South East London, London, United Kingdom
Liv-Ex
or a similar field. Desirable: Experience migrating monolithic architectures to modular or micro frontend systems Exposure to server-side rendering (SSR) or JAMstack frameworks (e.g., Next.js, Vite) Contributions to open-source projects, internal tooling, or frontend design systems Strong UX sensibility or history of close collaboration with UI/UX design teams Experience working within regulated, high-availability More ❯
Employment Type: Permanent
Posted:

Java Full Stack Software Engineer

London, United Kingdom
LE018 Redwood Software UK Ltd
or Google Knowledge of CI/CD pipelines and tools (e.g., Jenkins, GitLab CI). Familiarity with test-driven development (TDD) or behavior-driven development (BDD). Contributions to open-source projects or a strong GitHub portfolio. Bonus Skills: Gradle Shell scripting Tomcat Experience with AI If you like growth and working with happy, enthusiastic over-achievers, you More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Tech Lead/Technical Manager (London)

London, UK
Liv-ex
engineering, or a similar field. Experience migrating monolithic architectures to modular or micro frontend systems Exposure to server-side rendering (SSR) or JAMstack frameworks (e.g., Next.js, Vite) Contributions to open-source projects, internal tooling, or frontend design systems Strong UX sensibility or history of close collaboration with UI/UX design teams Experience working within regulated, high-availability More ❯
Employment Type: Full-time
Posted:

Staff and Team Lead, Onyx Application Engineering

London, United Kingdom
Hybrid / WFH Options
GlaxoSmithKline
communications skills Ability to manage time effectively without supervision and to organize, prioritize and deliver tasks and projects with a sense of urgency and close follow-up of any open issues. Experience with recruiting, managing, and developing engineers or other deeply technical contributors. Deep knowledge and use of at least one common web backend language: e.g., Python, Scala, Java … monitoring, ) Proficiency in front-end technologies: JavaScript, Typescript, React.js, Angular.js or similar. API development using technologies and standards like REST/GraphQL/gRPC or similar. Experience in an open-source web framework preferably implemented in Python, Java, Scala, or similar. Experience with Authentication & Authorisation Mechanisms e.g OAuth2 Application experience of CI/CD implementations using git and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Data Engineer

London, United Kingdom
Gunvor Group
Airflow, Azure Data Factory, Dagster). Proficient in cloud platforms (preferably Azure) and services such as Data Lake, Synapse, Event Hubs, and Functions. Authoring reports and dashboards with either open source or commercial products (e.g. PowerBI, Plot.ly, matplotlib) Programming OOP DevOps Web technologies HTTP/S REST APIs Experience with time-series databases (e.g., InfluxDB, kdb+, TimescaleDB) and … Kubernetes). Strong communication skills with the ability to explain complex technical concepts to non-technical stakeholders. English (fluent), any additional language is an asset If you think the open position you see is right for you, we encourage you to apply! Our people make all the difference in our success. About Us At Gunvor, we are always looking More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Java/Python Engineer (AVP)

London, United Kingdom
Hybrid / WFH Options
Citigroup Inc
/Kafka Familiarity with object storage e.g. AWS S3 Knowledge of containerised development workflows using e.g., VSCode Basic understanding of cloud platforms like AWS or GCP Experience contributing to open-source or internal code templates, demos, or accelerators Familiarity with data catalog services (e.g. Hive, Polaris, Glue) This job description provides a high-level review of the types More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Data Engineer

London, United Kingdom
Sandtech
intensive work for both OLTP and OLAP use cases. Our environments are primarily cloud-native spanning AWS, Azure and GCP, but we also work on systems running self-hosted open source services exclusively. We strive towards a strong code-first, data as a product mindset at all times, where testing and reliability with a keen eye on performance More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Director of Engineering (London)

Hanwell, Greater London, UK
Blink
tools. Hands-on experience with languages and tools like Ruby, Java, React, GraphQL, AWS/GCP, and Kubernetes. Bonus: Experience with vector databases, LLM frameworks (e.g., LangChain, RAG), and open-source AI tools. Excellent communication, collaboration, and problem-solving skills. Strong organizational skills with a passion for continuous improvement. Agile Practices: Demonstrated success with agile product development, iterative … be performed by the employee incumbent in this position. The employee will be required to follow any other job-related instructions and to perform any other job-related duties. Open communication and feedback with the Principal is encouraged, especially as the job evolves. A review of this position has excluded the marginal functions of the position that are incidental More ❯
Employment Type: Full-time
Posted:

Global Applications & Eclipse Product Manager

London, United Kingdom
Willis Towers Watson
stakeholder management skills. Ability to make data-driven decisions and manage competing priorities. Strong problem-solving skills and a proactive mindset. Preferred Qualifications: Experience with Eclipse ecosystem or related open-source platforms. Knowledge of ITIL and IT service management principles. Previous experience working in a SaaS or PaaS environment. At WTW, we believe difference makes us stronger. We More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Staff Site Reliability Engineer - Data Infrastructure, AD/ADAS

London, United Kingdom
Woven by Toyota
key building block for developing and testing modern AD/ADAS products that will impact millions of customers. Our ML and Data pipelines are built on-top of the open-source Flyte orchestration framework and are deployed to AWS. Pipeline code is written in Python. We leverage AWS S3, GCP BigQuery and ElasticSearch for data storage and search. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Engineer

London, United Kingdom
Sandtech
intensive work for both OLTP and OLAP use cases. Our environments are primarily cloud-native spanning AWS, Azure and GCP, but we also work on systems running self-hosted open source services exclusively. We strive towards a strong code-first, data as a product mindset at all times, where testing and reliability with a keen eye on performance More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Fullstack Software Engineer (Brahma)

London, United Kingdom
DNEG Group
Background in computer graphics, media processing, or VFX pipeline development. Experience with performance profiling, system monitoring, and observability tools. Understanding of network protocols, security best practices, and compliance requirements. Open-source contributions or technical writing experience. Entrepreneurial mindset or experience working with startups or fast-paced teams. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer (Remote)

London, United Kingdom
Hybrid / WFH Options
Experian Group
We are looking for a Software Engineer with knowledge of messaging systems, backed by a comprehensive background across a variety of middleware technologies, including commercial, open-source, and custom-built solutions. You will have experience with Apache Kafka, including administration, configuration, and troubleshooting in production environments. You'll have the opportunity to: Design, develop and implement the Kafka More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Solutions Engineer, Capital Markets/FSI

London, United Kingdom
Hybrid / WFH Options
Solace Corporation
be an asset Messaging Middleware/Integration - Understanding of the application middleware space. Technical knowledge of messaging products such as IBM MQ, TIBCO EMS/RV and/or Open Source messaging such as Kafka, Rabbit, ActiveMQ, etc. would be beneficial to the role Enterprise Integration Patterns and Solution architecture experience would be an asset. Knowledge of Digital More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Network Engineer

London, United Kingdom
LMAX Group
met. The ideal candidate should possess excellent communication skills, be proactive, and able to work independently, within a team, and with external parties. Requirements Genuine enthusiasm for Networks and Open Source technologies. Positive, constructive, and open-minded attitude. Self-motivated and able to work autonomously. Understanding of Routing and Switching protocols such as TCP/IP, BGP More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Engineer, London

London, United Kingdom
CRU International Limited
environment. Strong background in schema design and dimensional data modeling. Able to communicate data architecture clearly with internal stakeholders. Experience with Azure, Airflow, DBT, Kubernetes, GitHub. Bonus points for: open-source contributions, an active GitHub profile, and curiosity for the latest in tech. A natural problem-solver who loves making things work. Focused on delivery, quality, and continuous … improvement. Curious, adaptable, and open to change. What We Offer: Competitive salary and flexible benefits package. Opportunities for professional growth and development as part of a global company. A collaborative and supportive work environment. The chance to work with industry-leading experts and over a diverse range of topics and projects. Share Join the Team CRU is undergoing a More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:
Open Source
London
10th Percentile
£64,607
25th Percentile
£72,830
Median
£95,000
75th Percentile
£127,500
90th Percentile
£137,500