Serhii Lytvynenko

At Sogni.ai, I built Sogni Create from scratch into a generative-AI web app serving 200K+ active users, covering images, video, music, payments, a public SDK, and a Google Play release. I own product delivery end to end: React and TypeScript front ends, Node.js services, AI agent workflows, in-browser media processing, Web3 payment flows, and production integrations. I also created Sogni’s public TypeScript SDK, which reached roughly 34K npm downloads in a year. At Firstup, I led the integrations layer for an employee-communications platform serving 17M+ employees, building and maintaining enterprise integrations for systems including UKG, Microsoft 365, Confluence, Google Drive, Box, SAP Concur, ServiceNow, Zendesk, and ADP. I eliminated recurring targeting outages by reducing cache refreshes for 100K+-employee customers from hours to under three minutes. Previously, I carried LaborX’s three-sided US jobs marketplace through acquisition as its sole engineer. Across 15+ years, I’ve also built real-time systems, blockchain naming infrastructure, DNS and TLS tooling, and cloud-native web applications.