Johan Nordberg
Creator
Luleå, Sweden
Summary
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RockstarJohan Nordberg is a creator and entrepreneur with 16 years of hands-on software engineering experience, based in Luleå, Sweden. As founder of FFFF00 Agents AB he blends product-driven thinking with deep full‑stack skills, contributing to both front-end UX and back-end API design. Johan is an active open-source maintainer, notable for impactful work on projects like the Steem front-end (condenser) and the Steem.js API, plus tooling such as the Wintersmith static site generator and gif.js. His contributions span blockchain integrations, TTS preprocessing, static site architecture and browser compatibility fixes—demonstrating a knack for bridging user-facing polish with robust backend systems. Pragmatic and curious, he often surfaces non-obvious improvements like custom chain support, image-blacklisting UX options, and enhanced sentence-boundary detection for ML pipelines.
16 years of coding experience
4 years of employment as a software developer
Swedish
Github Skills (30)
speech-to-text10
pytorch10
compatible10
javascript10
coffeescript10
back-end-development10
apidoc10
python10
machine-learning10
text-to-speech10
browser-support10
st10
api10
front-end-development10
natural-language-processing10
Programming languages (26)
Github contributions (5)
jnordberg/gif.js
May 2013 - May 2017
JavaScript GIF encoding library
Role in this project:
Front-end Developer
Front-end DeveloperContributions:63 commits, 8 PRs, 7 pushes in 4 years
Contributions summary:Johan primarily contributed to the front-end aspects of the `gif.js` library, including modifying the HTML templates and JavaScript code. They made changes to the layout and index templates to incorporate the library and related scripts. Furthermore, the user addressed issues with URL handling, including vendor prefixes and browser compatibility, which are critical for the proper functioning of the library within different web browsers. The user also updated the distribution files.
encoding-libraryimagejavascriptgifencoding
jnordberg/wintersmith
Feb 2012 - Jul 2020
A flexible static site generator
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:431 commits, 27 PRs, 53 pushes in 8 years 7 months
Contributions summary:Johan significantly refactored the project to use a more flexible "content tree" structure. They introduced new classes like `Resource`, `Page`, and `ContentTree`, showing a deep understanding of the project's architecture. The changes involved core file modifications within `src/content.coffee`, `src/renderer.coffee` and `src/server.coffee`, indicating an influence in both the front and back-end functionalities of the project. They also added support for pug and various other features showing the expansion of the site.
static-sitesite-generatormarkdownstatic-site-generatorflexible
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