Сергій

SERGIY HESHKO
Chernivtsi, Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | github.com/venoosoo

PROFILE
Self-taught Frontend / Junior Fullstack Developer skilled in React, Next.js, and TypeScript, with backend experience in
Python (Flask) and Go. Active open-source contributor with a track record of shipping real, merged changes to established
projects. Comfortable owning a project end-to-end, from requirements through delivery, and drawn to writing clean, well-
structured code. Looking to bring that same rigor to a professional frontend team.

TECHNICAL SKILLS
● Frontend: React, Next.js, React Native, TypeScript, JavaScript, Tailwind CSS
● Backend: Go, Python (Flask), SQL / PL/pgSQL
● Tools: Git, GitHub, Linux, REST APIs

EXPERIENCE
Freelance Frontend Developer 2024
● Completed a small client project end-to-end, delivering a responsive, user-friendly interface.
● Owned the full cycle independently: requirement gathering, development, testing, and delivery.
● Gained direct client-facing experience, strengthening both technical and communication skills.

SELECTED PROJECTS
FeedTracker — Dota 2 Match Tracker 2025 – Present
React Native · OpenDota API
● Developing a mobile match-tracking app on bare React Native CLI (no Expo) integrating the OpenDota API.
● Built custom navigation, hero-icon rendering, and match filtering; worked through React Native internals including
SectionList performance and the Fabric/JSI vs. bridge architecture.
EdTech Platform 2024
Next.js · TypeScript · Tailwind CSS · Recharts · Go · PL/pgSQL · github.com/venoosoo/EdTech
● Developed a scalable school platform with modular architecture for parents and students.
● Key features: performance charts, attendance statistics, an event calendar with comments, exam scheduling, and
a central dashboard.
GitHub Account Checker 2024
React · TypeScript · GitHub API · Python/Flask · github.com/venoosoo/github-account-checker
● Built an app for searching GitHub users, tracking favorites, and saving search history, with a Python/Flask backend
to optimize and cache GitHub API calls.

OPEN SOURCE CONTRIBUTIONS
● uutils/coreutils — optimized wc's stdin metadata handling via fstat and improved mv's stdin-check behavior.
● ouch-org/ouch — unified directory extraction messaging and added a CWD decompression integration test.

EDUCATION
Yuriy Fedkovych Chernivtsi National University Sept 2024 – July 2028
Bachelor's in Telecommunication Technologies · Chernivtsi, Ukraine
Ispas Lyceum Sept 2013 – June 2024
Full Secondary Education · Ispas, Chernivtsi Region, Ukraine

LANGUAGES
Ukrainian: Native English: B2 (Upper-Intermediate)