Олександр

Oleksandr Nuzhyn - Kyiv, Ukraine (Remote)
Python AI Engineer
[відкрити контакти](див. вище в блоці «контактна інформація») • @Fifty_Sanya • GitHub

SUMMARY
AI Engineer focused on LLM integrations, RAG pipelines, AI agents and AI automations.
With a solid Python backend foundation and experienced in building and deploying
cloud-native B2C SaaS applications.

TECHNICAL SKILLS
● ML / AI: LLMs (OpenAI, Gemini, OpenRouter), RAG Systems, ChromaDB, Voice
AI (Whisper STT, GCP TTS, wakeword models), Google ADK for AI agents.
● Backend & Cloud: Python (Django, DRF, Ninja), PostgreSQL, GCP (Cloud Run,
Cloud SQL, Cloud Tasks, Firebase), Docker, CI/CD basics.
● Integrations: Telegram Mini Apps (TMA), Payment Gateways (Paddle, WayForPay).

KEY AI PROJECTS
Document Search (RAG System)
● Engineered a full-cycle RAG pipeline using PyMuPDF for text extraction,
Gemini Embeddings, and ChromaDB for vector storage.
● Developed a chat interface generating context-aware responses with precise
page citations and source metadata.
Voice AI Assistant (Windows Utility)
● Developed a Windows utility featuring custom-trained wake-word detection
for continuous background monitoring.
● Orchestrated a real-time audio pipeline using local OpenAI Whisper (STT),
Gemini API (Reasoning), and GCP TTS for real-time audio feedback.

PROFESSIONAL EXPERIENCE
Backend / AI Engineer | Ervelus (B2C SaaS) | 2025 – 2026
● Built Telegram Mini App backend services from scratch using Python (Django, DRF)
and deployed it autonomously on GCP (Cloud Run, Cloud SQL, Cloud Tasks).
● Integrated LLM APIs (OpenAI, Gemini, OpenRouter) for content automation and
configured payment webhooks (Paddle, WayForPay).

EDUCATION & LANGUAGES
BSc Software Engineering: Igor Sikorsky Kyiv Polytechnic Institute (Expected 2027).
Languages: English: B1 (Reading & Speaking) | Ukrainian: Native.