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Building Exercism and Kaido
Building Exercism and Kaido


  • Arctic Code Vault Contributor


@exercism @ordinoapp

Hi there 👋

I'm Jeremy (he/him) - a social entrepeneur and software developer (👨‍💻). Online I go by iHiD.

You probably know me as the co-founder of Exercism - an online platform that helps people upskill their programming skills through practice and mentoring. We're a open-source organisation with over 200 GitHub repositories, thousands of contributors, and a friendly, inclusive community. We've had over 500k people use us and millions of submssions. We're always looking for new people to help - email me if you'd like to get involved 🙂

You might also know me as the co-founder of Kaido - a health and wellbeing startup helping companies take better care of their employees. We work with companies who are tiny (4 people), huge multinationals (e.g. HSBC and KPMG), charities (e.g. Refugee Action) and with the NHS - the UK's public health service. Try Kaido for free and see how we can help your workplace be a happier and healthier place! 🙂

I also run Thalamus. I previously co-founded Reachora (2016-2019) and Meducation (2008-2016). I've also been a founding member of Flaunt and GetStoic, and ran two software consultancies (Meridian Innovations and Pure Intellect).

From 2016-2019 I was a Non-exec Director at the wonderful Beatfreeks.


I spend my time building organisations and businesses that help others. My core skillset involves strategy, leadership, community building, and software development. I have a degree in Artificial Intelligence and have co-developed a deep-learning algorithm used in Interventional Cardiology.

Day-to-day, I'm normally coding, leading, strategising or thinking - whichever is the most important at any given time!

Away from work I read, travel, climb, and get nerdy about coffee.


  1. Crowd-sourced code mentorship. Practice having thoughtful conversations about code.

    6k 1k

  2. Exercism — Code practice and mentorship for everyone.

    Ruby 125 135

  3. Easy-to-use pub/sub built on AWS. Ruby.

    Ruby 313 23

3,481 contributions in the last year

Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Mon Wed Fri
Activity overview
Contributed to exercism/v3-website, exercism/website, exercism/v3 and 5 other repositories

Contribution activity

October 2020

Created a pull request in exercism/v3-website that received 6 comments

Create codeql-analysis.yml

This is GitHub's auto code analyzer. It keeps bugging me to add it. Should we?

+71 −0 6 comments

Created an issue in exercism/v3 that received 23 comments

Evolving the specification of this repo

Hello @exercism/track-maintainers 👋 As we're getting closer to launching the beta of the tracks part of v3, we've been working on unifying the UI d…

31 contributions in private repositories Oct 1 – Oct 20

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