Stefan Bosak
Senior DevOps Engineer, Consultant at Papaya POS
Bratislava, Region of Bratislava, Slovakia
Summary
👤
Senior🎓
Top SchoolStefan Bosak is a Senior DevOps Engineer and consultant with 16 years of experience building cloud-native and on-premise infrastructure for enterprise and SMB customers, currently focused on POS, payments and warehouse systems at Papaya POS. He blends deep systems and embedded engineering roots (MSc in Robotics, C/C++ background) with modern DevOps practices—Kubernetes, Docker, Terraform, Ansible and observability stacks like Prometheus/Grafana—delivering reliable, secure platforms across AWS and private datacenters. Stefan has a proven track record improving legacy code quality (notably contributions to the widely used gammu project addressing memory safety) and mentoring cross-functional teams in R&D and operations. Known for a pragmatic, goal-oriented style and strong process discipline, he often bridges hardware-near development and cloud operations in complex regulated environments. Colleagues describe him as dependable and forward-thinking, able to spot opportunity inside problems and drive measurable operational improvements.
16 years of coding experience
13 years of employment as a software developer
Electrical engineering, Electrical engineering at Secondary School of Electrical EngineeringM.Sc. Robotics, M.Sc. Robotics at Faculty of Electrical Engineering and Information Technology Slovak University of Technology
Slovak, English, German
Github Skills (8)
memory-management10
code-standards10
coding-style10
c-programming10
code-formatting10
sms9
sms-messages9
mobile8
Programming languages (3)
Github contributions (5)
gammu/gammu
Dec 2009 - Dec 2009
Gammu All Mobile Management Utilities
Role in this project:
Back-end Developer
Back-end DeveloperContributions:81 commits in 13 days
Contributions summary:Stefan primarily focused on code style adjustments, proper type casting for memory allocation and deallocation functions (malloc, realloc, free) to prevent potential memory-related issues. They also addressed null pointer dereferences by setting pointers to NULL after freeing memory. This indicates a focus on improving code quality and preventing memory leaks within the project. Their work touched upon SMS related functionality and several areas of Gammu codebase.
gammureact-nativesmsandroidgsm
stefanbosak/networking
Oct 2020 - Dec 2023
Contributions:1 push, 1 branch in 3 years 3 months
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