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Series B Developer tools companies in London

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

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

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

  1. 1
    Tripledot Studios· London, England, United Kingdom

    Recently named "The fastest growing company in Europe" by the Financial Times, Tripledot is one of the largest mobile gaming companies in the world, entertaining over hundreds of millions of people around the world. Forged by seasoned industry veterans from King, Facebook and Product Madness, our goal is to create the highest quality games for everyone to enjoy. With the belief that amazing games are created by amazing teams, Tripledot brings the best-of-the-best together. Currently our team consists of 500 people in offices in London, Warsaw, Barcelona and Jakarta.

    • Series B
    • 595 employees
    • Founded 2017
  2. 2
    Lavanda· London, England, United Kingdom

    Our transformative property management software and solutions help support many of the world’s leading real estate companies, helping ensure their future success by providing innovative solutions that maximise ROI and inform good decision-making.Our PMS platform and solutions help organisations turn insights into opportunities enabling better decision-making and results via a highly evolved, powerful and compliant software platform that channels business intelligence to provide insights and resilience for organisations.

    • Series B
    • 355 employees
    • Founded 2014
  3. 3
    Wheely· Brentford, England, United Kingdom

    Wheely is a Swiss-founded British luxury services company headquartered in London and operating in other major cities, including New York, Paris and Dubai. We are building a platform with user privacy at its core while scaling a five-star service to millions of journeys across multiple cities. Beyond transportation, customers can also trust our chauffeurs to take on highly personal tasks for them through our concierge service, available through the best-in-class Wheely app. We exist to help our customers reclaim their time. With our modern engineering and design, together with the industry’s highest standards of service, we unlock an unparalleled experience for our customers—connecting them to the places and people that matter. Our team combines passion, determination and expertise, from engineering and product design to marketing and operations.

    • Series B
    • 312 employees
    • Founded 2010
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  5. 4
    Mimica· London, England, United Kingdom

    Mimica shows enterprises where to streamline, standardize, and automate processes across the entire organization — with zero manual effort, and in as little as two weeks. We answer the most important questions in a business: How are our people spending their time? How do we make these processes more efficient? Where’s the best place to start improving or automating? Here’s how we do it: Mimica’s AI-powered task mining observes employee actions across the desktop and categorizes them into detailed process maps. Mimica’s process intelligence highlights inefficiencies, prioritizes improvements based on ROI, recommends the optimal technology for automation (RPA, intelligent document processing, GenAI), and provides a blueprint for building new automations.Mimica transforms how work gets done across the enterprise, so you can maximize workforce productivity, cut costs, and drive operational excellence. Get started at Mimica.ai

    • Series B
    • 293 employees
    • Founded 2018
  6. 5
    Accurx· London, England, United Kingdom

    Accurx is where conversations happen with and about patients. Through one, easy-to-use platform, we help everyone involved in a patient’s care to communicate and collaborate.Whether you’re a patient or a healthcare professional, Accurx lets you connect seamlessly with the people you need to. We believe that healthcare runs on conversations - conversations in GP practices, on hospital wards, over the phone, text, video, email and from a patient’s home. That’s why we’re working toward a health system where everyone involved in patient care can communicate for the good of patients and healthcare staff.Every interaction on Accurx helps to build a better-connected healthcare system, where easy communication changes and saves lives every day.

    • Series B
    • 274 employees
    • Founded 2016

Find engineers at Series B Developer tools companies in London

Searching for “engineers at top Series B Developer tools companies in London” surfaces this slice of the market. The list above ranks Developer tools companies headquartered in London whose latest disclosed round is Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. With 53 matching companies in Refolk’s index, this is a tight read on where the Developer tools talent in London is heating up.

Three filters at once narrows the field hard. The companies that survive all three - Series B, Developer tools, in London - are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become Developer tools’s next operators and angel investors.

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How this list is built

Refolk pulled Developer tools companies headquartered in London whose latest disclosed funding round is Series B from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes monthly.

Last refreshed: Fri, 21 Aug 2026 02:00:30 GMT

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How is this ranking built?

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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