Олег

Tsap
oleh
Motivated Full-Stack Developer and Applied Mathematics student with a
core stack in JavaScript, TypeScript, React, Python (FastAPI), and
PostgreSQL. Possess a strong analytical mindset, C1 English proficiency, and
a dedication to writing clean, structured code.
Gained hands-on commercial experience working within a development
team on a complex TravelTech platform, "Ukraine Trip". Proven track record
in translating designs into responsive web interfaces, building functional
REST APIs, implementing interactive map integrations, and managing
cross-platform deployment processes. Adept at handling client-server
communication, production-level API routing, and secure CORS
configurations.
Eager to bring my strong problem-solving skills and domain knowledge to
a dynamic development team and continue growing as a full-stack
engineer.

[open contact info](look above in the "contact info" section)

[open contact info](look above in the "contact info" section)
EXPERIENCE

Ukraine, Lviv
Full-Stack Developer
LinkedIn Profile

Ukraine Trip
SKILLS
02/2026 – 05/2026
Frontend:
JavaScript Project Architecture & Routing: Designed and structured the core full-stack
TypeScript application architecture (React/Node.js). Implemented comprehensive client-
side routing using React Router, ensuring smooth page transitions and
React
configuring Vercel rewrites for stable production deployment.
HTML5/SCSS
Redux User Authentication: Developed secure user authentication flows, ensuring
Vite user registration credentials (email and password) are properly processed and
securely stored within a PostgreSQL database
Backend & Databases
Node.js
Maps & Geolocation Tracking: Successfully integrated Stadia Maps interactive
REST API interfaces and implemented browser-based geolocation tracking to allow
MySQL users to find their real-time location. Resolved production-level API
authentication bugs.

Soft Skills Security & Deployment: Configured CORS policies for secure cross-origin
Analytical Thinking & communication between the frontend (Vercel) and the backend server
Mathematical Validation (Render). Debugged build-blocking TypeScript/linter errors to ensure stable
continuous integration.
Logical Problem-Solving
Team Leadership &
Collaboration •Attention to
Detail

EDUCATION
Lviv Ukrainian Humanitarian
Gymnasium with in-depth study of
English
Lviv Polytechnic National University
(Applied Mathematics)
Frontend learning courses from GoIt