Hubert Lepicki - Co-owner at AmberBit

Hubert Lepicki

Co-owner at AmberBit

Białystok, Podlaskie Voivodeship, Poland

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Summary

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Senior

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Top School

Hubert Lepicki is a seasoned software engineer and co-owner of AmberBit with 17 years of experience building web and mobile applications from prototype to production. He blends hands-on development, architecture and team leadership while steering a product-focused development company based in Białystok, Poland. An active open-source contributor in the Elixir ecosystem, he has improved core projects like Elixir and Phoenix and refactored testing and mocking tools—work that touches language tooling, WebSocket protocols, and HTTP streaming. Hubert’s contributions show a practical focus on testability, developer experience and performance, including moving Mox to a GenServer-based design to enable shared mocks. He pairs entrepreneurial grit with deep backend expertise, often tackling subtle infrastructure and tooling problems that improve developer workflows.

17 years of coding experience

Bialystok University of Technology

Liceum Ogólnokształcące w Dąbrowie Białostockiej

English

Stackoverflow

Stats

684reputation

44kreached

5answers

6questions

Github Skills (29)

elixir-mix10

elixir10

testing10

test-framework10

websocket10

http-client10

mocking10

web-framework10

genserver10

javascript9

git9

refactor9

test-automation9

refactoring9

api-server8

Programming languages (14)

MDXC++CSSCPLpgSQLGoHTMLErlang

Github contributions (5)

phoenixframework/phoenix

Jul 2015 - Sep 2021

Peace of mind from prototype to production

Role in this project:

Full-stack Developer

Contributions:10 commits, 8 PRs, 36 comments in 6 years 3 months

Contributions summary:Hubert primarily contributed to the Phoenix framework by addressing various aspects of the project. They modified code related to WebSocket protocols, and generator tasks. The user also improved the code reloader functionality by adding configurations for reloadable apps. Furthermore, the user implemented support for building CJS modules alongside ESM and IIFE, extending the framework's module support.

realtimepeacephoenix-frameworkelixirprototype

dashbitco/mox

Sep 2017 - Nov 2017

Mocks and explicit contracts in Elixir

Role in this project:

Back-end Developer

Contributions:5 commits, 5 PRs, 33 comments in 1 month

Contributions summary:Hubert focused on refactoring the Mox library, transitioning from a Registry to a GenServer for managing expectations. They implemented features allowing other processes to share mocks, enhancing the flexibility of the testing framework. Further contributions involved improvements to installation instructions, along with using `Code.ensure_compiled?` instead of `Code.ensure_loaded?` and adding a global mode and making private the default mode.

testingelixirmockscontractsexplicit-contracts

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