Працював в 2 компаніях 2 роки 4 місяці
IT
AI-Native Fullstack Engineer
US-based company (NDA)
IT
1 рік
09.2025 - 08.2026
Commercial AI-powered SaaS platform for content analysis — from first commit to production.
• Designed the architecture and built the platform end to end — Python / FastAPI backend and Next.js / TypeScript frontend with a shared design system
• Built a multi-agent LLM pipeline: specialised agents work in parallel, and their structured outputs are combined into a single scored report
• Designed fault tolerance for non-deterministic AI output — incomplete results never reach users, and failed runs recover without repeating costly steps
• Optimised resource usage for heavy processing workloads, keeping the service stable under concurrent jobs
• Delivered an MCP server with secure OAuth 2.0 authorization, letting AI assistants work with the product on users' behalf
• Built automated CI/CD with secure deployments, safe database migrations and isolated environments
• Implemented subscription billing with usage quotas, real-time progress updates, an admin console and privacy features (data export, account deletion, data retention)
• Moved development to an AI-native workflow: custom subagents for research, testing, review and documentation checks, backed by one automated quality gate shared by local runs and CI
Scale: 1,300+ backend tests · 80+ documentation pages incl. 20+ ADRs · 1,100+ commits
Stack: Python, FastAPI, MongoDB, LLM APIs, MCP, TypeScript, Next.js, React, Tailwind CSS, Docker, Google Cloud
Freelance Fullstack Developer
Self-employed
IT
1 рік 5 місяців
05.2024 - 09.2025
Web applications, browser extensions and bots.
• Sync-Mate-Extension — cross-browser extension for synchronized video watching with a FastAPI WebSocket backend for real-time play, pause and seek sync; Vitest tests and automated builds with GitHub Actions
• Campus-Navigate-3D — interactive 3D university campus map with guided tours: React + Three.js frontend with animated camera routes, Django REST API with an admin panel, Docker
• University-Moderation — cross-platform Discord & Telegram bot: moderation, roles, schedule sync, events, music streaming; Spotify and OpenWeatherMap APIs, FastAPI service, PostgreSQL
• Check-Point-SHOP — Telegram bot for ordering products with dormitory delivery: catalog, orders, payment confirmation, order status, inventory and role-based access
Stack: Python, FastAPI, Django / DRF, TypeScript, React, Three.js, Tailwind CSS, PostgreSQL, SQLAlchemy, WebSockets, Docker, GitHub Actions
Ключова інформація
Technical Skills
• Backend: Python, FastAPI, Pydantic, Django / DRF, REST APIs, asyncio, SSE, WebSockets, Background Tasks
• Frontend: TypeScript, JavaScript, Next.js, React, TanStack Query, Tailwind CSS, Three.js, Browser Extensions
• Databases: MongoDB (MongoEngine), PostgreSQL, SQLAlchemy, Redis, MySQL, SQLite
• AI & LLM: Multi-agent LLM Pipelines, AI Agents, MCP, Vertex AI, Structured Outputs, Prompt Engineering
• AI-Native Workflow: Claude, Claude Code (custom subagents, skills, hooks), Gemini, GPT
• Cloud & DevOps: Google Cloud (Cloud Run, Tasks, Storage, Secrets), Docker, GitHub Actions CI/CD, Linux
• Integrations: Stripe, Sentry, PostHog, Mailgun
• Auth & Security: OAuth 2.0, JWT, NextAuth, Argon2
• Testing & Quality: pytest, Vitest, Playwright, mypy, Ruff, ESLint, Bandit, SOLID
• Tools: Git, GitHub, PyCharm, WebStorm
Soft Skills
Clear communication with both technical and non-technical colleagues — management, project managers, designers, content creators and marketing. Turning product concepts into architecture, task breakdowns and shipped features in close collaboration with stakeholders. Ownership of technical decisions and delivery. Fast learner — picks up new tools and frameworks as projects demand.
Навчався в 2 закладах
Національний університет "Чернігівська політехніка"
Навчально-науковий інститут електронних та інформаційних технологій / Комп'ютерна інженерія
2025
FH St. Polten (University of Applied Sciences)
Erasmus+ Exchange Semester, Computer Science
2025
Володіє мовами
Англійська
середній
Українська
рідна
Може проходити співбесіду на цій мові
Може проходити співбесіду на цій мові
Курси, тренінги, сертифікати
Python patterns (Udemy)
Додаткова інформація
Projects
Sync-Mate-Extension — browser extension for synchronized video watching with friends. Real-time play, pause and seek sync over a FastAPI WebSocket backend.
Stack: TypeScript, React, Tailwind CSS, WXT, FastAPI, WebSockets, Vitest
Campus-Navigate-3D — interactive 3D university campus map with guided tours, animated camera routes and location info panels; Django REST API with an admin panel.
Stack: React, Three.js, Vite, Django, DRF, PostgreSQL, Docker
University-Moderation — cross-platform Discord & Telegram bot: moderation, role management, schedule sync, events, music streaming and a multiplayer mini-game.
Stack: Python, discord.py, pyTelegramBotAPI, FastAPI, PostgreSQL, Lavalink
Check-Point-SHOP — Telegram bot for ordering products with dormitory delivery: catalog, orders, payment confirmation, live order status, inventory and role-based access.
Stack: Python, pyTelegramBotAPI, SQLAlchemy, PostgreSQL
Other: Neural-Network-Labyrinth — maze game where a neural network learns to navigate procedurally generated levels (TensorFlow, Keras); Miner-2D — multiplayer 2D sandbox with procedural worlds and client-server sync over sockets (Pygame)
GitHub: github.com/Zebaro24
Денис
Денис
AI-Native Fullstack Engineer
Австрія
повна зайнятість
Характер роботи: віддалена робота
Остання активність 1 тиждень тому