
Andrii
LangChain LangGraph AI Developer Python Backend
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Backend Developer
Self Employed • Fulltime
Aug 2021 - Nov 2025 • 4 yrs 3 mos
Backend Architecture: Architected, developed, and maintained robust backend systems over a 6-year period using Java. Focused on high scalability, clean code architecture, and database optimization for complex enterprise logic. AI & Automation: Transitioned into AI-driven automation, developing autonomous logic-based agents using Python, LangChain, and LangGraph. Built automated task-routing workflows and integrated custom LLMs via OpenRouter API. Headless Scripting: Engineered high-frequency automation scripts for complex network interactions, API data parsing, and multi-threaded task execution.