Jakub T. Jankiewicz is a software engineer with over 15 years of experience in open-source development, as well as an active editor of Polish Wikipedia, a guide for newcomers, and an official trainer for the Wikimedia Polska Association. He is the main author of the WikiZEIT project. He is also involved in photography.

• I'm a JavaScript expert and currently mastering ReactJS, ReactNative, TypeScript, NextJS, and GraphQL.
• I'm in a process of writing a new website and documentation for my project jQuery Terminal, the website use React framework Docusaurus.
• I'm also working on new project called Dialogue - modular chat library.
• Working on Hacking Cafe a "Fake" Unix-like environemnt in the browser.
• Created Mitty and RO/RCP Specification for remote object/method chains.
• I love to share my knowledge by writing technical articles and answering questions on sites like StackOverflow and on Social Media. I'm also learning how to be a good mentor.
• I have a Polish blog called "Głównie JavaScript" (en. Mostly JavaScript), but I'm not active there anymore. Recently I started a new personal blog created using Eleventy. I plan to be more active there. I will write programming articles but also about other topics that interest me.

My most known Open Source library is jQuery Terminal, it has a long history and was started in about 2010. I've started working on version 3.0 recently. I've planned it to be a complete rewrite in TypeScript without dependency on jQuery. I plan to use something modern like Cash with a similar API. I also need to write better documentation and visual tests that are missing.

I'm an Active Maintainer of the popular library Isomorphic-git.

I have a list of articles that I want to write that will showcase my Open Source projects, for instance on FreeCodeCamp, where I've wrtten few articles.

I have experience in SEO, I'm using my skills for promoting my Open Source projects to attract more users, I've even written an article that shows how to do that on your own.

How to Promote your Open Source Project with SEO

I'm Wikipedia Editor, WikiTrainer, mentor for newcomers. My education Wikipedia project is called WikiZEIT. I'm also doing Wikipedia consulations and traing (As part of my consultations, I also offer paid editing).

I work with:

I also know:

In 2023 I presented my Open Source project "LIPS Scheme" at FOSSDEM. Here is my Speaker profile and my presentation LIPS Scheme: Powerful introspection and extensibility.

As you can see in my profile I have a few Open Source projects and offer Paid Support. I can create a Web-Based Terminal for your website if you can't do that on your own. It will be based on my Open Source project jQuery Terminal, and may use my Gaiman Programming Language.

• The Importance of Questioning When Using AI Agents
• My Advice to New Developers
• How to build zig book as PDF on Fedora?
• How to Help Charities and Your Ego?
• Documentaries for Programmers

• Gdzie czytać o Wikipedii? Przegląd blogów i serwisów.
• Piotr Konieczny z Niebezpiecznika miał zostać skasowany
• Biblioteka Wikipedii, skąd brać źródła?
• Jak poprawić widoczność marki osobistej w AI?
• Projekt Koszulki „Jestem w Wikipedii”
• Dokumentacja Eksponatów w Muzeum 'Domek Tkaczki'
• Jak napisać bota do Wikipedii
• Konkursy Fotograficzne Wikimedia Commons
• Płatna Edycja Wikipedii w Polsce
• Czy Wikipedia jest płatna? Wikimedia Enterprise i SEO

• How to get access to DOM from Service Worker?
• How to Build a Dark Mode Toggle Without JavaScript
• How to Build a Zero-Cost Personal Project with PHP, Wasmer, and Cloudflare
• How to Create a Table of Contents for Your Article
• Interview with me on Requestly Blog
• My Open Source story @ opensource.org
• How to Match Parentheses in JavaScript without Using Regex
• How to Create a REST API Without a Server
• How to Create an Interactive Terminal-Based Portfolio Website
• How to Parse S-expressions in JavaScript