MaciejĀ Olejnik
Senior Full Stack Developer at Kineti BV
Warsaw, Masovian Voivodeship, Poland
Summary
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Rockstarš
Top SchoolMaciej Olejnik is a seasoned Team Leader and Senior Full Stack Developer with 11 years of experience building cross-platform applications and leading engineering teams from Warsaw. He blends hands-on expertise in React, React Native, NestJS, Three.js and serverless architectures with recent work on AI-driven virtual beings, LLM integrations, STT/TTS and device integrations via MQTT for security systems. Comfortable spanning frontend to backend, Maciej has led product development, mentoring and recruitment while also shipping mobile apps and complex geospatial UIs using OpenLayers. A game development enthusiast and active open-source contributor, he pairs an INTJ-driven focus with practical business analysis training to bridge technical depth and product outcomes.
11 years of coding experience
6 years of employment as a software developer
Postgraduate Degree Business System Analyst, Postgraduate Degree Business System Analyst at Uniwersytet SWPSEngineer's degree Informatyka, Engineer's degree Informatyka at Poznan University of Technology
Polish, English
Github Skills (52)
data-driven10
typescript-orm10
hook10
sqlite10
postgresql10
game-engine10
open-source10
sqljs10
deno-deploy10
context-api10
sql10
neon10
libsql10
nodejs10
rust10
Programming languages (3)
Github contributions (5)
bit-about/flow
Aug 2022 - Jan 2023
Powerful extensible pipe architecture.
Contributions:26 commits, 18 pushes, 1 branch in 5 months
golangpipedataflow-programmingextensibleflow-based-programming
oleystack/event
Apr 2022 - Jan 2023
š« Tiny and powerful hook-based event system for React
Contributions:8 releases, 1 review, 62 commits in 9 months
eventsreacteventreact-nativetiny
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