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Yaroslav Perekhodov
Personal FullStack Developer
information 3 years of experience
About me:
Languages Full-stack developer with production experience in building web applications using
Python (Flask) on the backend and modern JavaScript frameworks on the frontend. I
English: Intermediate (technical design and implement REST APIs, handle business logic, work with databases, and build
communication) responsive, user-friendly interfaces. Experienced in asynchronous programming
Ukrainian: Fluent (async/await), third-party API integrations, and delivering production-ready solutions
both independently and in development teams.
Technical Skills
Work Experience
Frontend: Js, HTML, CSS,
React QR-Image (2025-2026)
Backend: Python,
Backend Developer
Developed and implemented backend services for a unique QR code
Aiogram, async/await,
generation platform using Flask
FastAPI, Flask, BS4 Implemented an image generation pipeline, reducing QR code generation time
Databases: MongoDB, by approximately 35%
SQLite Personally developed a script for generating QR codes on any image
Deployed backend services on a VPS using Docker and Nginx, ensuring a
DevOps: Docker, Nginx, reliable production environment
Linux (VPS deployment) Assumed full responsibility for the backend architecture, deployment, and
maintenance
Contacts TempestCup (2024-2025)
Email Backend Developer
[open contact info](look above in the "contact info" section) Developed and implemented a fully functional platform architecture using
https://t.me/zymer44 Python (Flask) and React
Developed a REST API for authentication, tournament creation, configuration,
https://github.com/Okinatorri
and management
Implemented backend business logic and server-side validation, reducing the
number of incorrect user actions by approximately 30%
Created dynamic dashboards to track tournament status and participants,
improving usability and navigation efficiency
Integrated the frontend with the backend via a REST API and handled
asynchronous operations for interaction with external services
Developed a database schema and optimized queries, improving API response
times
Created a fully responsive user interface

Commercial project (Education platform) (2025-2026)
Backend Developer
Implemented a fully functional infrastructure for the educational platform
used during online events.
Developed backend services in Python (Flask) for processing user profiles,
activity tracking, and scoring/reward logic.
Created frontend interfaces based on Figma designs with perfect markup.
Implemented interactive flows based on QR codes with real-time data
updates.
Used async/await for input/output operations and external integrations.
Ensured platform stability when used by more than 125 simultaneous users.
Optimized the frontend user interface for non-technical users (children and
mentors), reducing onboarding issues by approximately 30%.