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Top Developer tools companies in London

IDEs, runtimes, frameworks, and platforms built primarily for engineers. Filtered to companies headquartered in London.

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Built from a search like: Top Developer tools companies in London

Ranked by current headcount across Developer tools companies headquartered in London. Refreshed monthly.

  1. 1
    Nothing· London, England, United Kingdom

    Nothing exists to make tech feel exciting again.We’re building a different kind of company, one that puts design, emotion, and human creativity at the heart of everything we do. From the way our products look to how they sound, feel, and function, we care about the details that make technology not just useful, but inspiring.This is a place for the curious. The creators. The ones who ask why not and mean it. If you're drawn to bold ideas, fast moves, and work that actually makes you feel something, you’ll fit right in.We're not here to follow the rules. We're here to make better ones.Founded in London in 2020, Nothing is a design-led tech company building an alternative to the industry giants. Our products, from award-winning smartphones to expressive audio and wearables, blend iconic design with intuitive engineering to put people and creativity back at the centre of consumer tech.Backed by GV (Google Ventures), EQT Ventures, C Ventures, and influential investors like Tony Fadell (iPod), Casey Neistat, and Kevin Lin (Twitch), we’ve grown from startup to global challenger in just a few years.

    • undisclosed
    • 30.7k employees
    • Founded 2020
  2. 2
    Pharma Solutions Hub· London, England, United Kingdom

    Pharma Solutions Hub partners with pharmaceutical and biotech startups to accelerate product development, secure sensitive data, and modernise R&D operations. We deliver custom software, AI pipelines, cloud engineering, and cybersecurity built for regulated environments. Our team combines software engineering, data science, and compliance expertise to create reproducible, auditable systems that speed discovery, protect IP, and keep clinical data safe. Follow this page for practical guides, technical playbooks, case studies, and security checklists that help founders, CTOs, and technical teams move faster and safer.

    • 15k employees
  3. 3
    AI· London, England, United Kingdom

    Welcome to AI - Your Go-To Hub for Everything Artificial Intelligence.AI is moving fast and staying ahead shouldn’t be hard.This page is built for anyone who wants to understand, discover, and leverage AI without the noise. We curate the most important AI news, tools, trends, and real-world use cases shaping the future of technology and business.🔍 What you’ll find here:- Breaking AI news & industry updates- Deep dives into generative AI, automation, and emerging trends- Curated AI tools & platforms worth your time- Practical insights for business, productivity, and innovationWhether you’re a founder, developer, creator, marketer, or AI enthusiast, this page is here to help you stay informed and ahead of the curve.👉 Follow AI and join a growing global community exploring how artificial intelligence is transforming the world.Let’s build the future — intelligently. 🤖✨

    • 13.2k employees
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  5. 4
    Deliveroo· London, England, United Kingdom

    Deliveroo is an award-winning delivery service founded in 2013 by William Shu and Greg Orlowski. Deliveroo works with approximately 176,000 best-loved restaurants and grocery partners, as well as around 150,000 riders to provide the best food delivery experience in the world. Deliveroo is headquartered in London, with offices around the globe. Deliveroo operates across 9 markets, including Belgium, France, Italy, Ireland, Qatar, Singapore, United Arab Emirates, Kuwait and the United Kingdom.

    • Post-IPO equity
    • 11.6k employees
    • Founded 2013
  6. 5
    Women Tech Community· Greater London, England, United Kingdom

    Women Tech is a global community of women in tech who are enthusiastic about supporting each other and advancing women's representation in the tech industry. We provide a platform where members can connect, learn, and grow.Our VisionWe envision a world where women are equally represented in the tech industry and can reach their full potential. We believe that tech is for everyone, and we are committed to collaborating with the community to make it happen.Our MissionOur mission is to empower women in tech to achieve their goals. We do this by providing a variety of resources, including:- A forum where members can ask questions and get help from each other.- A blog where members can stay up to date on the latest news and trends in the tech industry.- A library of resources, including articles, tutorials, and podcasts- A mentorship program that connects members with experienced professionalsHow to Get InvolvedThere are many ways to get involved in the Women Tech Community. You can:. Join our forum and ask questions or offer help to other members.. Read our blog to stay up to date on the latest news and trends in the tech industry.. Check out our library of resources to learn more about tech. . Attend our events and meetups to meet other women in tech and learn from them.We are always looking for new ways to get involved. If you have an idea for how you can help, please contact us.Thank you for your interest in the Women Tech Community. We look forward to collaborating with you to achieve our vision of a world where women are equally represented in the tech industry and can reach their full potential!

    • 9.9k employees

Find engineers at Developer tools companies in London

London has long been a hub for Developer tools, and the list above ranks the largest Developer tools companies headquartered there by current headcount, drawn from public LinkedIn and Crunchbase records. With 3,840 matching companies in Refolk’s index, this is a good map of where the Developer tools talent in London lives - useful whether you’re recruiting, partnering, or sizing a market.

The biggest Developer tools companies in London tend to be the gravitational centres for specialised talent - senior engineers, ML researchers, applied scientists, designers - while the smaller ones compete on speed, equity, and proximity to founders.

Refolk converts this list into a live search. Ask for Developer tools engineers in London hiring senior staff” or “founders of Developer tools companies in London who left in the last 12 months” and Refolk returns a ranked shortlist with the evidence that earned each person a spot.

How this list is built

Refolk pulled Developer tools companies headquartered in London from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 10 employees. The list refreshes monthly.

Last refreshed: Fri, 18 Sep 2026 07:51:16 GMT

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The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

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