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    LeanJS is an agency of excellence focused on Lean, UX, Agile, JavaScript, and people. We help you build apps that solve complex business problems, and they can be changed as fast as your business.
    Technical Coaching: it is our combination of TRAINING + DEVELOPMENT. It combines the theory of our well designed courses with coding on your own code base. With this approach, your organization can on board cutting-edge technology and obtain a quick return of investment. The coach will mentor your team and guide the architecture of your project. This way, your team will avoid initial mistakes that will cause delays and loses to your business.

    HQLondon, GB

    Latest Updates

    Employees (est.) (Jul 2020)1
    Cybersecurity ratingAMore

    Key People/Management at LeanJS

    Marc Rivelles

    Marc Rivelles

    Senior Javascript Developer
    Alex Lobera

    Alex Lobera

    Technical Coach & Head Instructor
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    LeanJS Office Locations

    LeanJS has an office in London
    London, GB (HQ)
    1 Fore St
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    LeanJS Financials and Metrics

    LeanJS Revenue

    Cash (30-Sept-2018)

    GBPFY, 2016FY, 2017FY, 2018



    Accounts Receivable


    Current Assets

    FY, 2016

    Financial Leverage

    1.5 x
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    LeanJS Cybersecurity Score

    Cybersecurity ratingPremium dataset



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    LeanJS Online and Social Media Presence

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    LeanJS Blogs

    Fingopay meets React Native.

    How React Native was the best solution for cutting-edge technology such as a biometric payment system.Finger-based biometric platform FingoPay approached us to help them with their high-tech biometric payment system earlier in 2018 and, needless to say, we’ve had a blast helping them creating a proo…

    Open source brand — LeanJS, ‘Iteration’ 3… Creating, testing and launching our low-fi MVP website

    Open source brand — LeanJS, ‘Iteration’ 3… Creating, testing and launching our lo-fi MVP websiteIn our ongoing quest to make LeanJS the best brand it can be, it’s time to actually put all our research findings into practical use and create the new website!Just to recap, we’ve: Interviewed key compan…

    Using Google’s Cloud Functions and Realtime DB to write a server-less slack integration

    This article assumes a basic understanding of Firebase, it’s features and GUI console, CLI, and project setup. If you’re not familiar, check out the firebase docs to get started: https://firebase.google.com/docs/web/setup It also assumes basic React, if you’re new to React I recommend starting h…

    On-boarding for biometric payments… UX and React Native rapid prototyping case study— part 1!

    Finger-based biometric platform FingoPay approached us to help with their super-cool payment system a few months back earlier in 2018 and, needless to say, we’ve had a blast helping them create proof-of-concept digital products that tapped directly into their finger-scanning technology.So when they …

    Introduction to Redux — Redux explained with very simple examples

    There is a fundamental question you should know how to respond before learning Redux, the question is: What is the state of an app?Let’s try to answer that question with plain English, let’s not think of React or Redux for a moment, all in all, any app has state regardless of the technology. To help…
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    LeanJS Frequently Asked Questions

    • Who are LeanJS key executives?

      LeanJS's key executives are Marc Rivelles and Alex Lobera.

    • How many employees does LeanJS have?

      LeanJS has 1 employees.

    • Who are LeanJS competitors?

      Competitors of LeanJS include Enna, Cardinus and SoftChalk.

    • Where is LeanJS headquarters?

      LeanJS headquarters is located at 1 Fore St, London.

    • Where are LeanJS offices?

      LeanJS has an office in London.

    • How many offices does LeanJS have?

      LeanJS has 1 office.