Stefan S.

Stefan S.

Senior Software Engineer

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.

Work history

UpStack
UpStack
Senior Software Engineer
2019 - Present (5 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 (5 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.

Portfolio

Full-stack Developer - Smart Senior
Full-stack Developer - Smart Senior

Smart Senior is Sweden's largest member company for anyone over the age of 55. The membership gives users access to hundreds of discounts from many companies in different industries. Smart Senior also works closely with most pension unions and other associations in Sweden and helps companies get in touch with Sweden's fastest-growing and strongest target group - the seniors. Provided back-end solutions with Node.js and managed the release of SmartSenior's mobile applications. Debugged the iOS mobile application for efficiency and upgraded push notification processes. SmartSenior's online platform has over 80K active users.

React Native Developer - Vihor
React Native Developer - Vihor

Vihor is a Blockchain database that supports community-building and social interaction through cryptocurrency rewards on an addictive, real-time online competition game system for action-oriented sports. Worked on the whole application from scratch to its release to the AppStore/PlayStore. Oversaw processes for payment integration, bug fixing, video optimizations, and lazy loading of high-quality images. Improved the custom Google Map knowledge base and the game's comments system. The project was successfully launched on the AppStore and Play Store.

Full-stack Developer - Iwaaant
Full-stack Developer - Iwaaant

IWaaant is a social network that gives users hints on the quickest and simplest ways to choose and buy gifts with certainty that it will delight the recipient. Worked as a React Native developer before transitioning to the position of mobile team lead. Worked on the release of the first app version and developed new features for push notifications and advanced calendar.

Mobile Team Lead - WowFlow
Mobile Team Lead - WowFlow

WowFlow is a task management solution for service workers with easy and friendly usability features. The app documents tasks with real-time status reports. Handled the successful release of many app features and implemented processes for the app's offline mode. It is available for download on the Play Store and AppStore.

Education

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