Josef Adamčík
Senior Developer at Sky Czech Republic
Prague, Czechia
Summary
🤩
Rockstar🎓
Top SchoolJosef Adamčík is a senior software engineer with 15 years of hands-on experience and a 19-year technical background specializing in resilient Java/Spring and modern TypeScript/NestJS backends. He has led cloud migrations from on-prem to GCP and architected scalable microservice platforms while championing DevOps practices—Kubernetes, Terraform, CI/CD—and automated testing to raise product quality incrementally. His career spans long-term enterprise work and mobile-focused roles, reflecting deep practical knowledge across backend, Android, and embedded domains. An active hardware and firmware hacker, he contributes to QMK and maintains a SofleKeyboard project with PCB, case designs and documentation—showing uncommon fluency in both software and hardware. Based in Berlin with degrees from the Czech Technical University, he combines disciplined engineering rigor with pragmatic delivery that ties technical improvements to measurable business outcomes. Colleagues value him for steady architectural stewardship and a focus on sustainable, testable systems.
15 years of coding experience
20 years of employment as a software developer
bachelor, Software Engeneering, Economics, bachelor, Software Engeneering, Economics at Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineeringmaster, Software Engeneering, Economics, master, Software Engeneering, Economics at Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineerinelectrotechnics, computer technology, electrotechnics, computer technology at SPŠ strojní a dopravní v Děčíně
Czech, English, German
Stackoverflow
5,680reputation
313kreached
127answers
2questions
android
top-5%
duplicates
top-5%
android-emulator
top-5%
android-fragments
top-5%
linux
top-5%
android-viewpager
top-5%
Github Skills (37)
hardware-designs10
keyboard-input10
kicad10
qmk-firmware10
firmware10
qmk10
c1110
keyboard10
c1710
iot10
keyboard-layout10
cplus10
embedded10
geb10
cpp10
Programming languages (9)
Github contributions (5)
josefadamcik/SofleKeyboard
Sep 2019 - Jan 2023
A split keyboard based on Lily58, Crkbd and Helix keyboards
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:3 releases, 9 reviews, 151 commits in 3 years 4 months
Contributions summary:Josef primarily worked on the hardware design and related software aspects of a split keyboard project. This involved initial designs for the top and bottom case in KiCad. Additionally, the user made a comprehensive drill file of the keyboard layout, modified the documentation site to use jekyll and fixed related links and finally, updated the structure to include PCB and case directories for different versions, showing hands-on experience with hardware design and document management.
keyboardssplitlily58helixcrkbd
qmk/qmk_firmware
Jun 2019 - May 2020
Open-source keyboard firmware for Atmel AVR and Arm USB families
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:15 commits, 2 PRs, 14 comments in 10 months
Contributions summary:Josef primarily contributes to the QMK firmware project by implementing custom keyboard layouts. They added support for the SofleKeyboard, including defining the keymap, layers, and custom keycodes. The user also made various refinements and improvements to the Sofle keyboard layout, removing unnecessary code and fixing typos. These changes demonstrate a focus on customizing keyboard functionality.
atmelavrfirmwareusbkeyboard-firmware
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