Balazs Kelemen
Senior Software Architect at TCG Digital
Hungary
Summary
👤
Senior🎓
Top SchoolBalazs Kelemen is a Senior Software Architect and seasoned full-stack engineer with 13 years of professional experience and roughly 30 years of hands-on programming across Java, C/C++, C#, Python, Rust and embedded IoT stacks. He has led development and QA teams on high-stakes Hungarian governmental projects, blending architecture, project management and DevOps practices while shipping robust Java/ Spring / jOOQ systems. A pragmatic problem-solver who still dives under the hood, he runs everything in Docker, authors CI/CD and QA tooling, and prioritizes unit testing and software erosion prevention. His open-source contributions include UI and plugin work on the well-known Meshtastic firmware and enhancements to ESP8266/ESP32 configuration libraries, reflecting strong embedded and IoT expertise. Comfortable working remotely in English for a decade, he also mentors teams, writes documentation and enjoys DIY microelectronics projects—proof of a hardware-software hybrid mindset uncommon at senior architecture levels.
13 years of coding experience
19 years of employment as a software developer
Information Technology, Information Technology at Budapest University of Technology and Economics
Hungarian, English, German, Dutch
Github Skills (22)
mesh10
c-language10
ui-design10
esp826610
mesh-network10
uid10
iot10
front-end-development10
sys10
lora10
esp3210
webserver10
embedded10
cprogramming-language10
arduino10
Programming languages (11)
Github contributions (5)
prampec/IotWebConf
Dec 2016 - Apr 2022
ESP8266/ESP32 non-blocking WiFi/AP web configuration Arduino library
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:19 releases, 2 reviews, 134 commits in 5 years 5 months
Contributions summary:Balazs primarily contributed to an Arduino library designed for ESP8266/ESP32-based IoT devices. Their work focused on creating a web-based configuration system, incorporating features such as captive portal handling, parameter management for configuration, and firmware update capabilities. The commits show the user integrating various functionalities, including optional groups and a time-setting with an NTP server, for expanding and refining the library. Their contributions included adding example applications utilizing MQTT and relay control, alongside UI enhancements like custom HTML rendering.
non-blockingweb-aparduino-libraryesp8266espressif
meshtastic/firmware
Jan 2022 - Apr 2022
This repository contains the official firmware for Meshtastic, an open-source, off-grid mesh communication system.
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:26 commits, 7 PRs, 6 comments in 3 months
Contributions summary:Balazs primarily contributed to the development of the Meshtastic firmware, focusing on features related to the user interface and the Canned Message plugin. Their work involved modifying the screen display to incorporate new UI elements and integrating the Canned Message functionality. The commits also included refactoring and bug fixes related to the rotary encoder and input handling within the UI framework, enhancing user interaction with the device.
rp2040nrf52meshfirmwareoff-grid
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