Denys K, Python Engineer | Backend Development & Support
B1 (Intermediate) English
Middle (3-5 years)
Ternopil,
Ukraine
UTC+02:00
Summary
- Python Developer with 5+ years of experience in backend development and automation: Django (3 years), Flask, and Fast API for web application development;
- Maintaining and supporting production systems using FastAPI and SQLAlchemy, API integrations including financial services and crypto platforms;
- Built and supported Telegram bots and automation tools for business operations;
- Docker containerization: Docker-compose, Docker via Render (serverless). Deployment and Linux server management (Ubuntu);
- Familiar with data reporting and basic analytics through internal monitoring tools;
- Open to part-time and distributed team environments with a focus on ongoing system support.
- Reached the Top 10 freelance Python engineers on the local market at the age of 17 (showcasing early
talent and initiative).
- Worked on projects with a multi-million user base, contributing to scalable architecture and high-load system stability.
- Successfully launched an educational platform in the USA, now actively used by students, tutors, and academic institutions.
- Represented the dev team at the international Wefi Beyond Banking Summit, delivering a product presentation to a global fintech audience.
Main Skills
Security
Programming Languages
Python Libraries and Tools
UI Frameworks, Libraries, and Browsers
Python Frameworks
Mobile Frameworks and Libraries
JavaScript Frameworks
Databases & Management Systems / ORM
SDK / API and Integrations
Message/Queue/Task Brokers
BlockChain and Decentralized Software
QA, Test Automation, Security
Virtualization, Containers and Orchestration
Methodologies, Paradigms and Patterns
Third Party Tools / IDEs / SDK / Services
Project Management & Administration
Platforms
Operating Systems
Mail / Network Protocols / Data transfer
Other Technical Skills
Work Experience
Senior Backend Developer, Education Platform
(01.2025 - Present, Remote - USA / Jersey City)
- Joined an existing project aimed at building a comprehensive educational platform connecting private tutors, academic institutions, and students.
- Conducted a full technical audit, restructured the architecture, optimized performance, and implemented scalable solutions.
- Contributions enabled a successful MVP presentation to stakeholders and ensured a stable and timely product launch.
Software Engineer, Web3 Loyalty System & Crypto ATM Operations
(10. 2024 – 01.2025)
Summary: The project involves building a web3-based loyalty system, setting up and maintaining servers, and supporting the operation of cryptocurrency ATMs. It also includes the development of Telegram bots for internal tools and automating operational processes.
Responsibilities:
- Development and support of a web3 loyalty system backend;
- Server setup, administration, and deployment (Ubuntu, VPN);
- Development and maintenance of software components for crypto ATMs (BATM);
- Creation and improvement of Telegram bots for the automation of internal workflows;
- Deployment using Docker and configuration of development environments.
Technologies: Web3, FastAPI, NestJS, Docker, Ubuntu, VPN, BATM, Telegram Bots.
Python Engineer & Telegram Bot Developer, dApp Marketplace
(Apr. 2024 - Sep. 2024)
Summary: The project is a dApp marketplace platform that provides service clients the opportunity to receive airdrops in various web3 protocols, thanks to the automation of participation in drops and passive earnings from this to all participants.
Responsibilities:
- Development and integration of the Telegram chatbot of the project;
- Development of Telegram mini application;
- Support, improvement, and implementation of new options for the backend and frontend parts of the Telegram mini app;
- Integration of payment systems and the TON wallet to the TMA;
- Improvement of UI functionality of the Telegram mini app;
- Performance optimization, database optimization, caching, as well as the collection of statistics on the operation of the platform;
- Working with asynchronous processing with SQL Alchemy;
- Multiprocessing with Uvicorn, process synchronization.
Technologies: Python, Mobile Development, Crypto Services, Telegram Mini-Applications, TON, TonKeeper, fastAPI, MySQL, SQL Alchemy, Multiprocessing.
Python Developer, Crypto project
(2022 - 2024)
Summary: Development of mobile applications, engagement with crypto services, creation of Telegram mini-applications, and support of ongoing projects.
Responsibilities: Creation of mobile applications, working with crypto services, creation of Telegram mini-applications, and ongoing project support.
Technologies: Python, Mobile Development, Crypto Services, Telegram Mini-Applications.
Python Developer, Multiple Python Projects
(2020 - 2022)
Summary: Involved in diverse Python projects including telegram mini-applications, backend work, and development with web3 technologies.
Responsibilities: Implementation of various projects involving telegram bots, backend development, web3 interactions, and payment service development.
Technologies: Python, Telegram Bots, Web3.
Python Developer, NDA
(2019 - 2020)
Summary: Worked with backend systems, developed telegram bots, and automated small business processes.
Responsibilities: Telegram bot development, small business automation, and parsing.
Technologies: Python, Telegram API.
Education
- Master's Degree in Computer Engineering & Automation. National Technical University (2023-2026)
- Bachelor of Computer Engineering, National Technical University (2019-2023)