Дмитро

Dmytro Onufriienko
Odesa, Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) |t.me/Otcovsky| github.com/otcovsky

Profile
Full-Stack Developer with 5 years of experience in software engineering, including over 2 years
working on commercial production code. I specialize in backend microservices, asynchronous REST
APIs and high-volume data processing in Python (FastAPI, asyncio).

I build data collection and processing pipelines: web scraping, document parsing and conversion
(PDF, MHT, XLS…), and work with analytical and time-series databases (ClickHouse, PostgreSQL,
TimescaleDB…). I integrate LLMs and vision-language models into production workflows.

I also build frontends with React, Astro, TypeScript and Tailwind CSS, and I am confident working with
Linux infrastructure (OpenSSH/SFTP, systemd, Bash). I am interested in AI agents and experiment
with them in my own projects.

Work Experience
Full-Stack Developer | SmartEnergyPro.tech | 08.2026 — Present
Tech stack:
• SFTP: Linux, OpenSSH (SFTP, chroot), PostgreSQL, PgBouncer, Python, Bash, systemd
• Backend: Python, FastAPI, asyncio, asyncpg, PostgreSQL, TimescaleDB, REST API
• Frontend: React, Vite, Tailwind CSS, ECharts, JavaScript

Full-Stack Developer | MyMedSheet.com | 04.2025 — Present
Tech stack:
• Backend: Python, FastAPI, Pydantic, Uvicorn, asyncio, ClickHouse
• Frontend: Astro 6 (SSR, Node.js), TypeScript, Preact, Tailwind CSS
• Data processing: web scraping (requests, httpx, BeautifulSoup), REST API integration, PDF parsing
(PyMuPDF), PDF/MHT to HTML/Markdown conversion, multithreaded processing
• AI / LLM: OpenAI-compatible API, Qwen3, Gemma, vision-language models (Qwen3-VL); AI-powered
data structuring, translation, image selection, FAQ section generation and image alt-text generation

Data Processing | OlaDoctor.com | 01.2024 — 04.2025
• Web scraping
• REST API integration
• LLM-based data structuring

Education
Odesa I. I. Mechnikov National University, Faculty of Physics, graduated 2002

Skills
• Backend & scraping: Python, FastAPI, asyncio, Node.js, REST API, microservices, async queues, proxies,
anti-bot protection bypass, large-scale data collection
• Databases & analytics: PostgreSQL, MySQL, ClickHouse, schema design, query optimization, high-load
analytics
• AI / LLM: OpenAI API, Anthropic API, Function Calling, batch processing planning, API cost optimization,
AI agents
• DevOps & servers: Debian / Ubuntu administration, Docker, CI/CD, server monitoring, automated
backups, security fundamentals
• Frontend: React, Preact, Astro (SSR), TypeScript, JavaScript, Vite, Tailwind CSS, ECharts, responsive layout, data
visualization and dashboards