Average salary: £60,720 /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... 
    Suggested
    Remote job
    Summer work
    Immediate start

    Mercor

    London
    14 days ago
  • £55k - £60k per annum

     ...development processes. We will expect you to use bespoke and open-source software, primarily Linux-based, to add value to our in-house...  ...coordinate with the Head of Technology and help lead and mentor our Developer and Graduate Developer in your immediate team. We will... 
    Suggested
    Permanent
    Full-time
    Immediate start

    ISR RECRUITMENT LIMITED

    Redhill, Surrey
    5 days ago
  • £55k per annum

     ...Senior Developer Permanent (must have or be able to obtain SC Clearance) Redhill, Surrey Up to £60,000 per year Plus an excellent...  ...design/development processes. You will be using bespoke and open-source software, primarily Linux based to bring additional value to... 
    Suggested
    Permanent
    Immediate start

    ISR Recruitment

    Redhill, Surrey
    18 days ago
  • £65k - £85k per annumEstimated
     ...Principal Engineer for a club of over 80 people (approx. 30-40 developers of all experience levels from Associate to Technical Lead), you...  ...industry expert in a specialist field, or have contributed to open source projects or charitable technical projects (like TuringLabs etc.... 
    Suggested
    Full-time
    Flexible hours

    AND Digital

    Bristol
    a month 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... 
    Suggested
    Long-term contract
    On-site

    JPMorgan Chase & Co.

    London
    more than 2 months ago
  • £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. •... 
    Suggested
    On-site

    Quant Capital

    London
    more than 2 months ago
  • £54k - £70k per annumEstimated
     ...working as part of a high-performance team developing new solutions that put the customer at the...  ...time isn't right for everyone, and we're open to talking about complete location flexibility...  ...applications with a focus on security. Source code systems and branching strategies.... 
    Suggested
    Full-time
    Part-time
    On-site
    Remote

    Tesco

    Manchester
    28 days ago
  • £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... 
    Suggested
    Remote

    Quant Capital

    London
    more than 2 months ago
  • £40k - £53k per annumEstimated
     ...best talent by investing in our employees and empowering them to develop themselves and their careers. Experience the challenges,...  ...practices to mitigate. Should have some experience in researching open- source technologies for use in building systems and participate in open... 
    Suggested
    Full-time
    Part-time
    Second job
    Hybrid working

    Halliburton

    Abingdon, Oxfordshire
    11 days ago
  • £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... 
    Suggested
    Full-time
    On-site
    Immediate start
    5 days/week
    Flexible hours

    QuantumLoopAI

    London
    more than 2 months ago
  •  ...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

    Dazzle: Commercial & Office Cleaning | London

    London
    more than 2 months ago
  • £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.... 
    Suggested
    Full-time
    On-site
    Remote

    100 Percent

    High Wycombe, Buckinghamshire
    8 days ago
  •  ...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... 
    Suggested
    Shift work

    watchTowr

    London
    19 days ago
  • £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... 
    Suggested
    Full-time
    Hybrid working
    On-site
    Remote
    Flexible hours

    Depop

    London
    3 days ago
  • £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... 
    Suggested
    Long-term contract
    On-site
    Flexible hours

    Man Group

    London
    9 days ago
  • £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:... 
    Long-term contract
    Permanent
    Hybrid working
    On-site
    Remote

    Robert Half

    London
    2 days ago
  • £25k - £30k per annum

     ...JavaScript, React, or similar would be desirable. Personal projects, open-source contributions, or a portfolio of work, however small, would be...  ..., and server-side logic under the guidance of a senior developer. We will expect you to get hands-on across the full stack, including... 
    Permanent
    Full-time
    Hybrid working

    Outserve

    Stafford, Staffordshire
    6 days ago
  • £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... 
    Full-time
    Hybrid working
    On-site
    Flexible hours

    Informed Solutions

    London
    12 days ago
  • £49.12k per annum

     ...We are seeking an experienced software developer with an interest in infrastructure engineering. Your role will revolve around designing...  ...documentation and tooling. OpenSAFELY is a highly secure, modular, open-source data analysis platform created by the team at the Bennett... 
    Remote

    University of Oxford

    Oxford, Oxfordshire
    3 days ago
  • £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... 
    Remote job
    Long-term contract
    Full-time
    Live-in
    Flexible hours

    Sensor Tower

    London
    more than 2 months ago
  • £25k - £30k per annum

     ...Junior Full Stack Developer (Backend Focused) Location: Stafford / Hybrid Contract: Permanent, Full‑Time   About Outserve...  ...development (JavaScript, React, or similar)  Personal projects, open-source contributions, or a portfolio of work, however small  Awareness... 
    Permanent
    Full-time
    Hybrid working

    hireful

    Stafford, Staffordshire
    20 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... 
    Hybrid working
    On-site
    Work from home
    Flexible hours
    Weekday work

    Intercom

    London
    more than 2 months ago
  • £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... 
    Full-time
    Work from home
    Flexible hours
    Shift work

    Zaizi

    London
    more than 2 months ago
  • £59k - £79k per annumEstimated
     ...in the most demanding environments.     Job Title: C++ Developer Location: Gloucester (Onsite working)   Who we are...  ...development in C++ including use of modern standards, third-party/open source software (e.g. boost), writing for performance, and concurrency... 
    Remote

    BAE Systems

    Gloucester, Gloucestershire
    more than 2 months ago
  • £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

    Solirius Reply

    London
    3 days ago
  •  ...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 contract
    Remote
    Flexible hours

    InvestEngine

    London
    24 days ago
  • £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 contract
    Full-time
    Temporary
    Hybrid working

    Burendo

    London
    more than 2 months ago
  • £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 contract
    On-site

    Quant Capital

    London
    more than 2 months ago
  • £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

    Accenture

    London
    more than 2 months ago
  • £49.75k per annum

     ...ecosystem, its architecture and its components Familiarity with source control systems, especially Perforce. The ability to diagnose...  ...prides itself on a professional approach to serving clients and developing our staff. Based in Hartlepool in the North East of England we... 
    Remote

    Tanglewood Games

    Hartlepool, County Durham
    12 days ago