Martin Šefčík
Senior Application Developer
Spišská Nová Ves, Region of Košice, Slovakia
Summary
🤩
Rockstar🎓
Top SchoolMartin Šefčík is a seasoned Senior Application Developer with over 17 years of hands-on experience building backend and full‑stack systems across payments, maps/navigation, and learning platforms. He blends deep Java expertise (Spring/Spring Boot, JPA/Hibernate) with modern front-end work in React/TypeScript and desktop/web hybrids like Electron and Tauri, plus a history of .NET and Android development. A pragmatic contributor to open-source projects, he has enhanced popular SDKs (go-gitlab) with pagination and CI integrations and improved an open-source API IDE (bruno) with UI fixes and response persistence. Martin is an advocate of robust SDLC practices—CI/CD, automated testing, code review—and is comfortable across diverse VCS and build ecosystems from GitLab/Jenkins to Maven/Gradle. Known as a patient, detail‑oriented teammate, he routinely helps colleagues troubleshoot complex production issues while keeping an eye on maintainability. Based in Spišská Nová Ves, Slovakia, he brings a practical blend of legacy-system experience and curiosity for cutting‑edge tooling.
13 years of coding experience
14 years of employment as a software developer
Mechatronic, Mechatronic at Secondary Technical School of Mechanical Engineering, Spisska Nova VesEngineer, Informatics and Information Technologies, Engineer, Informatics and Information Technologies at Technical University of Kosice, Faculty of Electrical Engineering and Informatics
Slovak, English, German
Stackoverflow
346reputation
88kreached
8answers
3questions
Github Skills (22)
javascript10
gitlab-api10
apidoc10
api-client10
go10
api10
sdk10
pagination10
react10
electron9
cicd9
testing8
git7
jenkins6
mercurial6
Programming languages (12)
Github contributions (5)
usebruno/bruno
Sep 2023 - Aug 2024
Opensource IDE For Exploring and Testing Api's (lightweight alternative to postman/insomnia)
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:30 reviews, 7 PRs, 116 comments in 11 months
Contributions summary:Martin contributed primarily to the front-end and back-end of the application, focusing on improving the user interface and application functionality. They fixed bugs related to the display of application shortcuts and the crashing of the app. Further, the user implemented a feature to save responses to a file, enhancing the application's capabilities. They also added debug-level console logging in scripts.
api-clientapilocal-firstopensource-apiapi-testing
xanzy/go-gitlab
Nov 2015 - Jan 2016
GitLab Go SDK
Role in this project:Back-end Developer
Back-end DeveloperContributions:17 commits, 5 PRs, 19 comments in 2 months
Contributions summary:Martin primarily focused on adding pagination parameters to various API calls within the GitLab Go SDK, enhancing the library's ability to handle large datasets. They also implemented support for project permissions attributes and Drone CI service API calls, expanding the functionality of the SDK to interact with different GitLab features and integrate with CI/CD services. Furthermore, the user performed code refactoring and fixed example snippets, improving the usability and maintainability of the codebase.
golanggitlab-cigitlab-apigitlabsdk
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