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Open Source Software Jobs In UK - 745 Job Positions Available

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Jane Street jobs

About the Position We’re looking for Software Engineers who want to help us design and build the systems and tools that run the firm. You’ll find Software Engineers in all parts of Jane Street, solving real problems in

Jane Street  28 days ago
CoreWeave jobs

CoreWeave is The Essential Cloud for AI. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs,

CoreWeave  28 days ago
Lightning AI jobs

Who We Are Lightning AI is the company behind PyTorch Lightning. Founded in 2019, we build an end-to-end platform for developing, training, and deploying AI systems—designed to take ideas from research to production with less friction.

Lightning AI  28 days ago
FlightStory jobs

JUNIOR SOFTWARE ENGINEER COMPANY : STEVEN.COM REPORTING TO : VP of ENGINEERING LOCATION: LONDON ABOUT STEVEN.COM Steven.com is building the operating system for the creator economy, forecast to pass a trillion dollars by the early 2030s. This

FlightStory  28 days ago
CACI Ltd jobs

We are the Information Intelligence Group (IIG) of CACI UK, a specialist software consultancy providing new bespoke solutions to solve our customers complex operational problems. As our business continues to grow, we are interested in speaking with

CACI Ltd  28 days ago
Anduril jobs

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century’s most innovative companies to

Anduril  26 days ago
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FanDuel jobs

THE POSITION Our roster has an opening with your name on it Were looking for a Senior Software Engineer to join one of our Core Marketing Platforms teams, where youll build and optimize high-performance microservices that power

FanDuel  25 days ago
Entrust jobs

Join us at Entrust At Entrust, we’re shaping the future of identity centric security solutions. From our comprehensive portfolio of solutions to our flexible, global workplace, we empower careers, foster collaboration, and build solutions that help

Entrust  26 days ago
ARM jobs

Job Overview: Arms Central Engineering Machine Learning Group is seeking highly motivated and creative Software Engineers to join a cross-site and multi-culture software team! This role presents an excellent opportunity to move into ML, the key development for

ARM  25 days ago
Sky jobs

We don’t just believe in better. We make it happen. Better content. Better products. And better careers. Working in Tech, Product or Data at Sky is about building the next and the new. From broadband to

Sky  25 days ago
RE Partners jobs

Hello from RE Partners! Who We Are: We are a fast growing business and technology consultant company co-founded in 2019. We offer a custom-tailored, white-glove engineering service fit for our clients, because a digital transformation is

RE Partners  24 days ago
Tessl jobs

Tessl is a fast-growing Series A startup based in London, founded by Guy Podjarny. We’ve raised over $100M from world-class investors including Index Ventures, Accel, GV, and Boldstart, and in 2025 we were ranked #2 in

Tessl  24 days ago
Docker jobs

Docker has been one of the most loved brands in developer tooling, trusted by more than 20 million monthly users and over 20 billion container image pulls. From solo founders to the worlds largest companies, developers

Docker  23 days ago
Genius Sports jobs

By bringing together next-gen technology and the finest live data available, Genius Sports is enabling a new era of sports for fans worldwide, delivering experiences that are more immersive, interactive and personalized than ever before.Learn more

Genius Sports  23 days ago
Databricks jobs

RDQ127R176 At Databricks, we are passionate about enabling data teams to solve the worlds toughest problems — from making the next mode of transportation a reality to accelerating the development of medical breakthroughs. We do this

Databricks  23 days ago
La Fosse Associates jobs

At La Fosse, we’re an employee-owned talent solutions business specialising in tech, digital, and change, but people are always at the heart of what we do. Our mission is to create a working world where talent

La Fosse Associates  23 days ago
Ciena jobs

As the global leader in high-speed connectivity, Ciena is committed to a people-first approach. Our teams enjoy a culture focused on prioritizing a flexible work environment that empowers individual growth, well-being, and belonging. We’re a technology

Ciena  23 days ago
JPMorgan Chase & Co. jobs

We have an opportunity to impact your career and provide an adventure where you can push the limits of whats possible. The Equities Derivatives Front Office Flow Technology Team is developing the best in class pricing,

JPMorgan Chase & Co.  23 days ago
Wise jobs

Company Description Wise is a global technology company, building the best way to move and manage the world’s money. Min fees. Max ease. Full speed. Whether people and businesses are sending money to another country, spending

Wise  22 days ago
FanDuel jobs

THE POSITION Our roster has an opening with your name on it Were looking for a Senior Software Engineer to join one of our Core Marketing Platforms teams, where youll build and optimize high-performance microservices that power

FanDuel  21 days ago

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