The Exercism team

The Exercism team is made up of our our core team, our track maintainers, our mentors, and volunteer contributors.

Our track maintainers

Our maintainers are the lynchpins of the language tracks and exercises on Exercism.

Avatar of Katrin Leinweber

Katrin Leinweber GitHub

I struggled to apply R to my own PhD research data in 2013. A Science Craft grad school course finally got me started when I decided to use another, well-formated data set. Since then, I have found R to be a lifeline for data analysis and teaching myself and others one or the other programming skill :-) R may not be pretty, but it gets the job done.
Avatar of Rob Keim

Rob Keim

I stumbled upon this site when I was trying to learn about functional programming and F#. Little did I know, I'd wind up becoming a contributor and learning a whole lot more than what I originally intended to. I had never contributed to an open source project before, and it's been a very rewarding experience.
Avatar of Ryan Potts

Ryan Potts

I have been using Delphi professionally since 1996. At my day job I develop software used in the control of various types of test machines used by the auto industry. Exercism is my first real push into Open Source and I'm happy to have this opportunity to teach and share the virtues of Delphi with others.
Avatar of Dave Sudia

Dave Sudia

I'm a career-changer from education, and I used Exercism to reinforce my skills as I made the switch. I love TypeScript for the flexibility of JS with the consistency of strongly typed languages. Maintaining the TS track has grown my appreciation for the language.
Avatar of Daniel Mita

Daniel Mita dango.space

My first adventure in coding was creating userscripts by trial and error (many errors...). Somewhere down the line I accidentally found myself employed in my first coding role as a Perl developer, after attempting pair programming in Haskell.
Avatar of Sam Warner

Sam Warner

I am a software developer and consultant working for Black Pepper Software, a software company based in Leamington Spa, England. I'm a recent Computer Science graduate from the University of Warwick, and love all things to do with computers!
Avatar of Jon Calder

Jon Calder My Website

I was introduced to R during my statistics undergrad in 2006 and have been trying to learn to use it properly ever since! I love the power, flexibility and expressiveness of the language, and hope I can help others to appreciate it too.
Avatar of Cristian Rivas Gómez

Cristian Rivas Gómez

I am a Software Engineering student from San Sebastian. I enjoy a lot reading about topics related to Java, software maintainability and web technologies. My love for TypeScript began developing web apps with Angular framework.
Avatar of Katrina Owen

Katrina Owen

I love Go for its simplicity and consistency. I also appreciate how hard the Go project is working to make the ecosystem welcoming to newcomers. I no longer maintain the Go track, but still maintain the Go tooling on Exercism.
Avatar of Frida Johanne Tveit

Frida Johanne Tveit

I'm a software developer working for Softwire, a UK based software company. I love programming in pretty much any language (possibly with the exception of C++) but Java is probably the language I have the most experience with.
Avatar of Peter Tseng

Peter Tseng

I write a lot of Go for my day job, building platforms for other software engineers to use. The Exercism Go track was the first open-source project I joined; I'm grateful for all I've learned through this experience.
Avatar of Logan Stucki

Logan Stucki

I'm a 16 year old high school student. I like programming and java a lot. Contributing to exercism helps me to keep learning and get valuable experience. One day near, I hope to have a job or internship programming
Avatar of Mark Simpson

Mark Simpson Code and Cocktails

I have always been interested in Lisps since taking the SICP course in college. I love the expressiveness and conciseness of the simple syntax, and the ability to build the language upward to meet the domain.
Avatar of Norbert Melzer

Norbert Melzer

Found out about erlang via exercism, got hooked by its lightweight processes and how they are used as first class citizen. After fixing some trivial bugs in the track, I have been added to the team.
Avatar of Lee Nipper

Lee Nipper

Firmware Engineer by day. I like Go a lot, and I'm optimistic about its adoption. Helping on Exercism track allows me to learn more. My focus is adding exercise solutions and test case generators.
Avatar of Tim Mackinnon

Tim Mackinnon

I'm the co-inventor of Mock Objects, Gold Cards, and many retrospective techniques, but still a developer at heart and using Pharo Smalltalk as a platform to explore further new exciting ideas.
Avatar of Hilary Holz

Hilary Holz

25+ years experience as a software engineer, specializing in the web since NCSA HTTPd and Mosaic. Ruby has been my primary language for the past 7 years; it fills me with glee.
Avatar of John Reese

John Reese I sometimes write about stuff

I am a software engineer with a passion for testing and C#. If you have any questions about the C# track or the language in general, feel free to ask; I'd love to hear them.
Avatar of Ozan Onay

Ozan Onay Bradfield School of Computer Science

Ozan teaches MIPS assembly as part of the Computer Architecture course at Bradfield, and finds that it's a great excuse to think about how computers actually work!
Avatar of Sascha

Sascha My website

Physics student. Learned about Julia in a class and decided to dig more into it. Very promising language and I wanted to get more involved in its community.
Avatar of Guy Gastineau

Guy Gastineau

I really love Linux and Bash! I think the only reason I use a window manager is for chrome/firefox. Every other open window on my machine is a terminal.
Avatar of Rob Phoenix

Rob Phoenix robphoenix.com

I used to be an artist, and am now a software engineer, using Go for forensics monitoring. Exercism's Go track opened up the world of open source to me.
Avatar of Samuel Wilson

Samuel Wilson

A Ruby on Rails dev by day, a Rust and Smalltalk programmer by night. I have found Pharo Smalltalk a delight to use. I'm here to spread the good news.
Avatar of Rubén Chavarría

Rubén Chavarría Here is where I blog

I'm a Web Developer with a passion for taking code that is hard to maintain and cleaning, refactoring, and bringing it back into a manageable state
Avatar of Erik Schierboom

Erik Schierboom My blog

I am a developer with a passion for learning new languages. C# is a well-designed and expressive language that I love programming in.
Avatar of Brad Wood

Brad Wood Tech Blog

ColdBox/CommandBox Developer Advocate. Lucee Member. System Architect. CFML dev. DBA. Dad. Handyman. Ready for a revolution.
Avatar of Anthony Scotti

Anthony Scotti 128bit.io

With a love of learning new languages, Nim has caught my eye and I want to share the experience of learning it with others.
Avatar of Dinesh Ahuja

Dinesh Ahuja

I only trust code written by me. I only trust food cooked by me. I only trust people trusted by me(Wait...🤔?)
Avatar of Marnen Laibow-Koser

Marnen Laibow-Koser My Website

I started learning APL out of general interest, realized there was no Exercism track, and decided to make one!
Avatar of Nathan Parsons

Nathan Parsons

Python fits with how I think and allows me to quickly write powerful, maintainable, and extensible code.
Avatar of Tom Leen

Tom Leen thomasleen.com

I did what I always do...when the problem seems vast and unsolvable...I built another machine. :rocket:
Avatar of Mugurel (Bud) Chirica

Mugurel (Bud) Chirica

Full Stack Web Developer (Ruby, JavaScript, DevOps). www.linkedin.com/in/mugurel-teodor-chirica
Avatar of Jake Varness

Jake Varness dev.to

Team Lead and Senior Software Engineer at Cerner Corporation, husband, father, nerd
Avatar of Ryan Hartlage

Ryan Hartlage

Lua perfectly embodies the philosophy of 'less is more'. I am smitten.
Avatar of Joel Wallis Jucá

Joel Wallis Jucá

Brazilian full-stack web developer. Mentor at Thinkful
Avatar of Dog

Dog

I can not only fetch JSON, but parse it too.
Avatar of Corey McCandless

Corey McCandless

Big fan of homemade bread and reusable code.
Avatar of Peter Goodspeed-Niklaus

Peter Goodspeed-Niklaus

definitely not an ai gone rogue
Avatar of Matt Morgan

Matt Morgan

Learn, teach, build, repeat!
Avatar of ferhat elmas

ferhat elmas ferhatelmas.com

Passionate Developer