Sergii Lukianenko's Work | ContraWork by Sergii Lukianenko
Sergii Lukianenko

Sergii Lukianenko

Backend & Automation Engineer | Python, APIs & Data Systems

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Cover image for I built a Python-based marketplace
I built a Python-based marketplace monitoring system that automatically collects listings, extracts technical specifications, and scores product compatibility against predefined requirements. The system prevents duplicate processing, tracks seller and listing history, stores structured results, and sends ranked Telegram notifications with matched specifications and source links.
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Cover image for I built a Telegram-based sales
I built a Telegram-based sales automation system for managing clients, campaigns, leads, and manager workflows. The Python backend includes role-based access, PostgreSQL storage, Excel imports, CRM integration, sales attribution, analytics, duplicate protection, and auditable lead status transitions. I also implemented Docker deployment, automated tests, safety controls, and structured operational monitoring.
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Cover image for I designed and built a
I designed and built a real-time market data and execution research system in Rust. It integrates REST and WebSocket APIs, processes live order-book data, records the complete execution lifecycle, and reconciles fills, fees, and latency. The system includes structured logging, data-integrity monitoring, reproducible reports, and strict safety controls for demo and research environments. It does not claim strategy profitability or enable unattended live trading.
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Cover image for I designed and built Insider
I designed and built Insider Edge, a data-driven research platform that collects and processes SEC filings and insider-activity data. I developed the Python backend, PostgreSQL data pipelines, automated analysis and publishing workflows, Telegram integrations, and Docker-based VPS deployment. The system includes data-quality checks, monitoring, historical validation, and transparent research reporting.
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