Markian Tsybran
I build production systems end to end — 10+ years across the stack, including fintech at Citi and UBS. Lately I ship LLM agents in production: RAG, retrieval, vision, and agentic workflows wired into real products.
Where I've shipped
Leading fintech & mobile-monetization platforms. Architected Node.js + React systems and Python (FastAPI) microservices, and put LLM agents, RAG, and computer-vision pipelines into production. Own hiring, mentoring, and technical direction.
Built a platform to spin up mobile apps in two clicks — React, Vue, and Node integrations.
Enterprise bank-client dashboards (fintech) for global banking customers.
Dozens of web & mobile products for startups — blockchain, fintech, SaaS, and AI.
GenAI, in production
AI Compliance Validator
Scans sites & apps for required legal elements, validates presence and visibility, and generates HTML/PDF reports with screenshots.
Document Intelligence
Parses, splits, classifies, and extracts structured data from PDFs and email using LLMs + embeddings.
CV Background Removal
YOLO segmentation + SAM for precise object masks, with post-processing — a production computer-vision pipeline.
LLM Agent Automation
Multi-agent orchestration for business workflows: command execution and tool calling.
Why teams keep me close
Fintech depth
Years on banking & monetization platforms, incl. enterprise bank clients like Citi and UBS. I sweat reliability, compliance, and money-movement edge cases.
GenAI in production
Not demos — RAG, retrieval, vision, and agentic workflows shipped into real products people use.
AI-accelerated delivery
I build with Claude Code daily — compounding output without cutting corners on architecture or quality.
Team leadership
Team Lead for years: hiring, mentoring, system design, and owning the hard technical calls.