Stefan S.

Stefan S.

Banja Luka, Bosnia and Herzegovina
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About Me

Stefan is a Senior Software Engineer with an eye for modern trends and approaches in delivering web and mobile solutions for clients. He has polished skills in React Native iterating solutions for new challenges and works as a team player and quick problem-solver on projects. Stefan has filled important roles in different phases of the product development cycle from concept to system architecture, software architecture, implementation, simulation, debugging, software and system integration, and characterization of system specifications with a proven record of leading on challenging projects.

Frontend

Backend

Database

Other

Work history

UpStack
UpStack
Senior Software Engineer
2019 - Present (6 years)
, Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

Taskrabbit
Taskrabbit
Software Engineer
2019 - Present (6 years)
, Remote
  • Developing new features: calendar integration, metrics, discounts, Stripe integration, client reschedule, new tasking zones, etc.

  • Serving as a release manager when needed and attending biweekly Scrum sprints.

  • Regularly contributing to app upgrades.

Aurity
Aurity
React Native Developer
2019 - 2020 (1 year)
, Remote
  • Used cutting-edge tools and technologies to deliver and optimize client solutions.

  • Followed best practices and coordinated with UX designers to meet accessibility standards at code level.

  • Coded, tested, debugged, implemented, and documented complex applications.

NowMatters
NowMatters
Software Engineer
2018 - 2019 (1 year)
, Remote
  • Designed, developed, tested, deployed, maintained, and improved software solutions for the SmartSenior app.

  • Contributed to product and solution designs, addressed critical implementation issues, and resolved complex problems.

  • Participated in code reviews and conducted performance-related diagnostic troubleshooting/analysis on solutions.

Freelance
Freelance
React/React Native Developer
2017 - 2019 (2 years)
, Remote
  • Architected, built, and maintained React Native applications with clean code.

  • Implemented clean, modern, smooth animations and transitions that provided an excellent user experience.

  • Wrote unit and integration tests and released applications to the iOS and Google Play stores.

JSGuru
JSGuru
Software Engineer
2017 - 2019 (2 years)
Banja Luka, Bosnia and Herzegovina
  • Developed and delivered high-quality code for solutions on time, leading a cross-functional team of developers.

  • Worked with and maintained existing codebase and new components, maintaining production code and contributing to deployment and QA processes.

  • Offered production expertise for defect triaging, impact analysis, resolution planning, and implementation.

Showcase

Full-stack Developer - Smart Senior
Full-stack Developer - Smart Senior
  • Managed back-end solutions with Node.js and oversaw the release of SmartSenior's mobile applications.

  • Debugged and increased the efficiency of the iOS mobile app and enhanced push notification processes.

  • Smart Senior serves as Sweden's largest member company for over 55s and has an online platform with over 80k active users.

React Native Developer - Vihor
React Native Developer - Vihor
  • Vihor is a real-time online competition game system for sports, functioning on a Blockchain database, offering cryptocurrency rewards to incentivize social interaction and community-building.

  • The developer built the entire application from scratch, including handling payment integration, bug fixes, video optimizations, and the implementation of lazy loading for high-quality images.

  • The project was successfully launched on the AppStore and Play Store, with improvements made to the custom Google Map knowledge base and the game's comments system.

Full-stack Developer - Iwaaant
Full-stack Developer - Iwaaant
  • Developed and released first version of IWaaant app as a React Native developer

  • Transitioned to position of mobile team lead within the same project

  • Implemented new features such as push notifications and advanced calendar for IWaaant

Mobile Team Lead - WowFlow
Mobile Team Lead - WowFlow
  • WowFlow is a task management solution for service workers, featuring user-friendly functionality and real-time status reports.

  • Led successful release of multiple app features and designed processes for offline mode.

  • The app is available for download on Play Store and AppStore.

Education

Education
Degree in Information Technology
University of Banja Luka - Bosnia and Herzegovina
2015 - 2017 (2 years)