Average salary: £68,375 /yearly
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$150 per hour
...Benchmark , General Catalyst , Peter Thiel , Adam D'Angelo , Larry Summers , and Jack Dorsey . Position: Senior Open Source Engineer Type: Contract Compensation: $150/hour Location: Remote Role Responsibilities Author...SuggestedRemote jobSummer workImmediate startMercor
London14 days ago- £77k - £103k per annumEstimated...single points of failure, using scalable architectural patterns. Develop secure code so that our customers and ourselves are protected... ...platform that use other languages as needed. We look to use Open source when it makes sense and build ourselves when it doesn't. We...SuggestedLong-term contractOn-site
£70k per annum
...Tech: HTML5 CSS3 JavaScript Angular / React Challenge: Develop Greenfield systems and increase functionality for existing high transaction... ...be prototyping a new feature for the product, working on an open source project, data integration, or learning a new skill. •...SuggestedOn-site£150k - £200k per annum
...0 + bonus Quant Capital is urgently looking for a Crypto FPGA Developer to join our high profile clients Team Our client is a well known... ...The environment is that of Facebook or Google, relaxed open with time to think and make the right decisions. The atmosphere is...SuggestedRemote- £47k - £62k per annumEstimated...the NHS. ABOUT THE ROLE We are looking for a Full Stack Developer to join our engineering team at our Canary Wharf headquarters.... ...define engineering processes and standards - Contributions to open-source projects LOGISTICS - Education: We value skills and...SuggestedFull-timeOn-siteImmediate start5 days/weekFlexible hours
- £81k - £108k per annumEstimated...continuously evolving our recruitment processes to ensure fairness and are open to accommodating any needs you might have. AI Disclosure: We use AI tools (Google Gemini) to help our team source and review applications for roles with a high volume of applications. These...SuggestedFull-timeHybrid workingOn-siteRemoteFlexible hours
- ...they're now looking for a rockstar, jack of all trades backend developer to help to build the next generation of the apps that enables the... ...An interest in financial markets and investment Passion for open-source technology and engaging with the wider technology community...Suggested
£40k - £45k per annum
...would prefer experience with Git or similar source control. We would prefer strong debugging... ...first or synchronised applications. We are open to both motivated graduates with solid C#/.NET foundations and experienced developers looking to broaden their skills....SuggestedFull-timeOn-siteRemote- ...Intelligence Platform Development: Enhance and develop our internal Django Python based threat... ...internal and external threat intelligence sources. Platform Optimisation: Continuously... ...automation frameworks, or contributing to open source security projects. Cloud & CI/CD...SuggestedShift work
- £77k - £102k per annumEstimated...found * As at 31 December 2025 The Role As a Quant Developer at Man Group you will be part of one of our flagship teams in Man... ...stack: numpy, scipy, pandas, scikit-learn to name a few of the open-source libraries we use extensively. We implement the systems that...SuggestedLong-term contractOn-siteFlexible hours
- £32k - £41k per annumEstimated...and Digital Democracy. The Role: As a Full Stack GIS Developer at Informed Solutions, you’ll play a key role in shaping, building... ...also leverage Geographic Information Systems (GIS) and open-source geospatial tools, helping clients unlock the value of location...SuggestedFull-timeHybrid workingOn-siteFlexible hours
- £53k - £70k 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
£80k per annum
...FastAPI / Flask) JavaScript, REST APIs & SQL Server AI & LLM applications RAG pipelines & agentic AI workflows Locally hosted open-source LLMs Microsoft Power Platform LangChain, LangGraph, Semantic Kernel & Copilot Studio exposure Why this role stands out:...SuggestedLong-term contractPermanentHybrid workingOn-siteRemoteRobert Half
London2 days ago- £62k - £82k per annumEstimated...the centerpiece of our brand — the public source of truth about Intercom’s products and the... ...performant experiences across web and mobile. Develop backend logic and APIs , manage data... ...days per week. We have a radically open and accepting culture at Intercom. We avoid...SuggestedHybrid workingOn-siteWork from homeFlexible hoursWeekday work
£60k - £75k per annum
...Zaizi is looking for a Senior Software Developer with solid technology skills, but who is also... ...tools: Maven, Gradle, Ant Familiar with source control systems, such as GIT, including... ...have skills: AWS Knowledge of Open Source BPMN workflow engines (Camunda, Activiti...SuggestedFull-timeWork from homeFlexible hoursShift work- £60k - £80k per annumEstimated...different projects, providing a broad range of knowledge on which to develop their careers and progress in the direction they choose.... ...leading globally distributed engineering teams Contributions to open-source projects or technical communities Benefits What We Offer:...Flexible hours
- £65k - £88k per annumEstimated...mobbing scenarios A good communicator who shares our values of openness and respect A DevOps mentality – meaning that you don’t want... ...tech stacks Understanding of and working experience with source control, particularly Git Experience with database technologies...Long-term contractFull-timeTemporaryHybrid working
- ...ownership throughout the process. What You’ll Do Design, develop, and maintain backend services in Python 3.11 using Django / DRF... ...systems such as RabbitMQ or Kafka Contributions to open-source projects or personal technical initiatives Prior experience...Long-term contractRemoteFlexible hours
£90k per annum
...JavaScript Developer UI React TypeScript – Up to £90,000 p/a Quant Capital is urgently looking for a JavaScript Developer to... ...write code. To deliver quickly you will leverage the best of the open source community, sometimes substituting your own solutions where...Long-term contractOn-site- £55k - £73k per annumEstimated...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...Full-time
£80k - £100k per annum
Senior C++ Developer (Hybrid, UK-Based) Location: London Salary : £80,000 - £100,000 + EMI Share Options + Private Medical Insurance... ...Familiarity with time synchronisation protocols such as PTP or NTP * Open-source contributions or evidence of staying current with the C++...PermanentFull-timeHybrid workingOn-site£76k - £88k per annum
...or Go for tooling and automation, familiarity with PTP or NTP, open-source contributions, and an interest in staying current with the C++... ...that must be correct, fast, and observable in production. We develop online and offline tooling to support time synchronisation and...PermanentFull-timeHybrid workingOn-siteHoptroff
London11 days ago- ...Role Overview: As a Senior Java Developer within the Slot Team, you will play a crucial role... ...Data Solution: Design solutions for data sources based on product requirements and write queries... ...for personal growth and learning ~ An open, inclusive and supportive team where you...
£80k per annum
...from Home NO FINANCE EXPERIENCE NEEDED Junior Core Java Developer Big Data Fintech Quant Capital is urgently looking for a... ...test suite. To deliver quickly you will leverage the best of the open source community, sometimes substituting your own solutions where...Work from home£45k - £60k per annum
Java Middleware Software Developer Someone who has excellent Java skills, Spring MVC, Apache... ...experience with SOAP and REST web services , open API development, and SOA concepts, using... ...(KanBan) Experience with different open source stacks including build & release processes...Full-timeFlexible hours- £54k - £70k per annumEstimated...We are seeking a skilled Core Developer (Rust/ C++) for Swarm Robotics & Sensor Control with over 5 years of professional experience to join... ...defence, security, public sectors. Our commitment: We are an open-minded company that not only values diversity, but actively...PermanentFull-timeOn-siteFlexible hours
- £75k - £99k per annumEstimated...collaboratively across engineering to maximise inner-sourcing opportunities and reduce waste Proven... ...career progression, investing heavily in developing great people through our Capital One... ...scheme and enhanced parental leave Open-plan workspaces and facilities designed...PermanentHybrid workingOn-siteImmediate startFlexible hours
£63k - £103k per annum
...- 103,000 per year Requirements: We require proficiency in open-source technologies such as TypeScript, JavaScript, Java, PHP, HTML, and... ...to provide technical leadership, direction, and support to developers and QA engineers. We require the ability to assist with recruitment...PermanentFull-timeHybrid workingFlexible hoursDriver & Vehicle Standards Agency
Croydon, Greater London18 days ago£160k per annum
...Linux Developer – Quant Trading up to £160,000 + benefits and bonus Quant Capital is urgently looking for a Linux Engineer to join... ...proprietry trading systems. The technology is a mixture of in-house and open-source allowing deep customisation and innovation on every level....- £59k - £77k per annumEstimated...of datapoints daily from thousands of data sources. Our stack combines Java and Python, with... ...understanding of Git ~ Contributions to open-source projects ~ Experience... ..., you'll find opportunities to grow, develop your talents, and help foster an inclusive...Long-term contractFlexible hours
