Vitaliy S.

Are you looking for a technical leader who doesn’t just write code, but builds scalable business assets? With over 7 years of experience in architecting high-performance systems, I help companies transform complex ideas into robust, AI-driven platforms. My background spans from leading FinTech AI projects to automating content generation for 15 million pages. Why work with me? Strategic Architect & Team Lead: I don’t just implement features; I design microservice architectures that scale and lead teams to deliver them on time. AI & LLM Specialist: I build advanced RAG systems, AI agents, and automated document processing pipelines that save hundreds of human hours. FinTech Expertise: Deep experience in building secure, high-speed banking and trading applications where data integrity is non-negotiable. Clean Code & Reliability: I follow strict OOP principles, TDD, and CI/CD best practices to ensure your system is maintainable and bug-free. Core Tech Stack: Backend: Python (FastAPI, Django, Flask), Node.js, C++ AI/ML: LLMs, RAG, OpenAI, LangChain, Computer Vision, Vector DBs (PGVector, Redis) Infrastructure: Kubernetes (K8s), Docker, AWS, GCP, Terraform Data: PostgreSQL, MongoDB, Kafka, RabbitMQ Selected Achievements: Built an AI-powered banking platform that fully automated document processing and property seizure logic. Architected a massive web-automation system generating and managing 15,000,000+ indexed pages. Designed a FinTech trading application from scratch, handling real-time data streams and complex financial logic. If you need a Lead Developer who thinks like a CTO and executes like a Senior Engineer, let’s talk. Keywords: Python, FastAPI, Django, Flask, AI, Machine Learning, LLM, RAG, OpenAI, LangChain, Anthropic, NLP, Computer Vision, OpenCV, C++, SQL, PostgreSQL, MySQL, MongoDB, Redis, Kafka, RabbitMQ, Docker, Kubernetes (K8s), AWS, GCP, Microservices, System Architecture, Team Leadership, CI/CD, GitHub Actions, Terraform, Selenium, Playwright, n8n, Zapier, Make, Unit Testing, REST API, WebSockets.