Average salary: £68,375 /yearly
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- £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
- £75k - £100k per annumEstimated...powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and... ...creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career...SuggestedHybrid workingOn-siteShift work
- £82k - £106k per annumEstimated...As a Backend Optimisation Engineer, you'll be responsible for developing highly efficient computation kernels and client-side infrastructure... ...points for: ~3+ years of professional or strong academic/open-source experience related to AI compilers (TVM, MLIR, XLA) or open-...SuggestedPermanentRemote
£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- £53k - £69k per annumEstimated...rewriting history. We offer world-class facilities: In 2019, we opened our state-of-the-art Stadium, a £1 billion landmark that’s... ...matches and trophies by building and maintaining a single source of truth, developing innovative quantitative models, and delivering tools and...SuggestedRemoteShift work
- £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
- £91k - £120k per annumEstimated...be found at * 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... ...stack: numpy, scipy, pandas, scikit-learn to name a few of the open-source libraries we use extensively. We implement the systems that require...SuggestedLong-term contractOn-siteFlexible 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
£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-siteRemote- £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
- £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
- £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
- £36k - £48k per annumEstimated...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... ...Nice to have skills: AWS Knowledge of Open Source BPMN workflow engines (Camunda, Activiti...SuggestedShift work
£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- £106k - £138k per annumEstimated...the Systematic Quoting Platform workstream for EMEA. You will develop and enhance applications critical to the business, working closely... ...with service-oriented platforms and current generation open source frameworks About Us J.P. Morgan is a global leader in financial...Long-term contract
£600 per day
...and high-impact environment. Key Responsibilities Design, develop, test, and maintain Back End services using Kotlin Contribute... ...Implement and support event-driven architectures, including event sourcing and event streaming Work within an Agile/XP environment,...Daily payHybrid workingImmediate start- £60k - £80k per annumEstimated...organisation that empowers our people to take ownership, innovate, and develop their expertise. As an equal opportunities employer, we are... ...globally distributed engineering teams Contributions to open-source projects or technical communities Benefits ~ Competitive Salary...Flexible hours
- £72k - £95k per annumEstimated...estate. Coaching & Influence Be a source of mentorship and thought partnership for... ...that you approach it with curiosity and an open mind. Why This Role? Influence some... ...careers that open doors and help our team develop by providing an open and inclusive work environment...Long-term contractFull-timeHybrid workingOn-siteWork from homeShift work
- ...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- £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
- £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
£50k per annum
...Understanding of agentic AI capabilities and how they can complement workflow automation Experience mentoring developers or contributing to open-source Camunda extensions Already holding UK security clearance (SC, DV, eDV) Responsibilities: Design, develop, and...Full-timeHybrid workingWork from homeProfile 29
London16 hours ago£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- £103k - £132k per annumEstimated...Java Software Developer – Trading Systems (Remote) Amsterdam or London Quant Capital is partnered with a leading technology-driven... ...requirements • Improve performance across internal software, open-source tools and Linux environments • Work on monitoring, alerting...Remote
- £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
- £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
£160k per annum
...Linux Engineer/ Developer – Quant Trading up to £160,000 + benefits and bonus Quant Capital is urgently looking for a Linux Engineer... ...trading systems. The technology is a mixture of in-house and open-source allowing deep customisation and innovation on every level. Automation...£70k per annum
...manipulation. They use unique online data from many sources to create an ultra low latency trading... ...top 50 fintech firms globally. The Developer will produce tools and build websites that... ...is that of Facebook or Google, relaxed open with time to think and make the right...Remote
