Artem Ptashnyk

Led frontend architecture with React (hooks, context, custom hooks, memoization, lazy loading) and optimized rendering performance using React Profiler and code-splitting, reducing page load times by ~35%. Built reusable UI component libraries and design system standards. Developed FastAPI REST APIs with validation, JWT/OAuth authentication, and transactional DB integration. Designed and optimized PostgreSQL schemas and complex queries for high-throughput AI workflows. Debugged and refactored legacy services to reduce production incidents by 30%. Built RAG pipelines with LangChain/LangGraph and vector databases (FAISS/Pinecone), designing deterministic agent workflows with state machines, retry handling, and robust orchestration. Deployed and monitored enterprise AI agents with scalability and reliability in mind.

Built LLM-powered intelligent agents for customer support and internal operations, reducing manual workload by ~60% and improving response times. Designed agent pipelines for intent detection, decision logic, tool execution, and response generation to increase automation reliability and consistency. Implemented RAG-enabled agent systems with dynamic retrieval from enterprise knowledge bases to improve answer accuracy and reduce hallucinations. Created orchestration frameworks for agent state management, retries, fallbacks, and execution paths to improve resilience. Deployed and monitored agentic services on AWS using Docker and Kubernetes. Collaborated with product, data, and platform teams to embed agent-based AI into enterprise SaaS workflows.

Developed scalable backend services using Django and Flask for data-intensive and ML-driven features. Optimized database schemas and query performance, improving response times and reducing database load by ~30%. Implemented CI/CD pipelines and automated testing to improve release reliability and reduce defects. Delivered features end-to-end in an Agile remote environment. Built secure, auditable LLM-powered agent systems for automating and validating internal financial documentation workflows. Developed enterprise SPA frontends and also worked on event-driven pipelines using Kafka for scalability and decoupling. Refactored legacy frontend modules toward a React-based architecture and modernized legacy backend services to reduce tech debt and improve response times by ~30%, with heavy PostgreSQL query optimization.