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Serhii Lytvynenko

@serhiilytvynenko

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I build end-to-end AI products, real-time systems, and scalable web platforms.

Ukraine

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What I'm looking for

I'm open to fully remote international work where I can ship AI products end to end, lead complex integrations, and build scalable web, real-time, or Web3 systems.

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.

Experience

Work history, roles, and key accomplishments

Senior Full-Stack Engineer

Sogni.ai

Oct 2024 - Aug 2026 (1 year 10 months)

Sole owner of Sogni Create, a generative-AI web app for images, video, and music, grown to 200K+ active users. Implemented generative flows, built an in-browser video editor, and engineered a PWA with IndexedDB persistence and a Google Play release.