Oleh

Micro-SaaS financial decision simulator that helps owners of agencies and consultancies evaluate scenarios and their impact on profitability and cash flow. Developed a visual formula tree showing how business drivers, such as hiring and pricing, affect financial performance. Designed financial models that distinguish accounting profit from cash flow, forecast cash runway and highlight the cost of underutilized team capacity. Led the product from concept through development with Claude Code, Gemini and Codex.

Free relocation decision platform that helps Ukrainian families compare countries using verified, source-backed data. Took the product from idea to live launch as a solo founder, owning strategy, UX, research methodology and engineering. Built a structured research pipeline covering 25 countries, with each fact tied to a source, validity period and verification date. Designed scenario models that separate user inputs, assumptions, verified facts and uncertainty. Shipped the web app with React, TypeScript and Vite on Cloudflare, including a contact form backed by D1 and email notifications with automatic retries. Reached 3,400+ active users in a 30-day period through November 2026.