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Mykyta Vyshniak

@mykytavyshniak

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Full-Stack Engineer at Vacuumlabs who built Solidity exchange logic and safety checks for PumaTradeApp.

Slovakia

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At Vacuumlabs, I owned core Solidity financial logic for PumaTradeApp, a perpetual futures exchange on Robinhood Chain. I defined seven safety invariants and verified them with fuzz and mutation testing.

For OPNFT.fun, I designed and built achievement badges from database to UI, and replaced several on-chain RPC reads with backend-served data. I also shipped collection sorting, an activity feed, and a floor-price history chart.

At Chr. Av. Services Ltd, I built Python backend solutions and implemented Redis caching that improved API response times by 18% and reduced server load by 20%. I also participated in containerizing backend services with Docker.

Experience

Work history, roles, and key accomplishments

Full-Stack Engineer

Vacuumlabs

Jan 2025 - Oct 2026 (1 year 9 months)

Worked on multiple client engagements as part of an outsourced consultancy, including a perpetual futures exchange, an NFT marketplace, a stablecoin port, a Solana game, a token distribution system, and an open-source AI-agent framework. Owned core financial logic in Solidity, built frontend features in React and TypeScript, and implemented backend services and monitoring.

Solidity React TypeScript NodeJS PostgreSQL Docker SQL CI CD REST APIs Web3 Solana Bitcoin OP_NET Prisma Zod OpenAPI

Python Backend Developer

Chr. Av. Services Ltd

May 2023 - Sep 2024 (1 year 4 months)

Developed scalable backend solutions using Python and design patterns. Implemented Redis-based caching that improved API response times by 18% and reduced server load by 20%, and containerized key services with Docker.

Python Redis Docker REST APIs Caching Rate limiting Design Patterns