Contact information

You can get this candidate's contact information from https://www.work.ua/resumes/10460072/

Work experience

FastAPI Back-End Developer

from 05.2026 to now (6 months)
Buyo, Kyiv (IT)

Develop and maintain Python backend services and RESTful APIs using FastAPI, SQLAlchemy, and PostgreSQL.

Build new modules and implement business logic for an affiliate marketing platform, including offer management, pricing, payouts, and notifications.

Integrate third-party services, including CRM systems, analytics platforms, Telegram, and partner APIs.

Refactor existing code and database models to improve maintainability and support new business requirements.

Implement Redis-based caching and asynchronous background processing.

Write automated tests with pytest to validate business logic and prevent regressions.

Manage database schema changes and migrations using Alembic.

Investigate and resolve bugs, API integration failures, and production issues.

Middle FastAPI Developer

from 11.2025 to 03.2026 (5 months)
ТОО AQMOL-project, Remote (Construction, architecture, interior design)

1. By myself was created new service responsible for calculating requirements for Sketch Design, which included:
-TEI
- Commercial Offer with conversion to PDF for client
- Project Estimate
- Reports about completed jobs
- Project Fact with employees progress
- Payments Progress for accountant
- Approving systems for managers
Backend:
- FastApi
- PostgreSQL
- Redis
- SQLAlchemy
- Celery
2. Added global service with Counterparties for our portal.
3. Has been fixed Bugs with Salary calculation
4. Optimized SQL requests to DB for receiving results faster than before, which means more comfortable User-Experience

Junior Python Developer

from 03.2025 to 09.2025 (7 months)
Мельник О.І., ФОП (IT-компанія), Remote (IT)

I was responsible for creating and improving existing automation solutions for businesses.
From simple data-extractors to scalable automation systems.
In my shoulders was responsibility for complex automation systems with collecting, filtering and with further processing data from websites like:
- arbeitsagentur.de
- europa.eu
- amazon.com

Career break

from 03.2019 to 02.2025 (6 years)
Working on a personal project

Education

Secondary

Additional education and certificates

Python - Повний Курс по Python, Django, Data Sciencе и МL

2023
Certificate

Knowledge and skills

• Python
• FastAPI
• REST API
• Asyncio
• PostgreSQL
• Redis
• MongoDB
• Backend-розробка
• Docker
• Docker Compose
• Здатність до навчання
• RabbitMQ
• ORM
• Git
• SQL
• Знання принципів ООП
• REST
• Aiogram
• Telegram API
• SQLAlchemy
• Alembic

Language proficiencies

• Ukrainian — fluent
• English — average

Additional information

Hi! I’m Denys👋 I’m 22
Python Backend Developer with 3+ years of experience building scalable RESTful API services. Specialized in designing high-performance systems that solve complex business problems. Experienced in system architecture, database design, and optimizing backend performance.