Maksym Kashliatskyi

Fullstack JavaScript Engineer

kashlyatsky@gmail.com LinkedIn GitHub

Professional Summary

Full Stack Engineer with 4+ years of experience in building scalable SaaS platforms, E-commerce, and Desktop applications. Proficient in React/Next.js and Node.js (NestJS) ecosystem. Strong focus on end-to-end delivery and cloud infrastructure

Experience

Zup OÜ

Nov 2022 – Mar 2026

Full Stack Developer

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    SaaS Platform (PharmaCo): Architected and scaled a pharma-focused SaaS using Next.js, CockroachDB, and Prisma. Implemented complex Auth0 integration and Vercel edge deployments.
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    Desktop Engineering: Refactored a legacy Electron.js project, introducing Playwright & Jest resulting in 40% fewer regression bugs.
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    Real-time Collaboration: Developed a custom Messenger + Task Tracking system with Socket.io and NestJS, enabling instant team updates and low-latency communication.
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    E-commerce Engine: Built shipment and invoice automation flows using Express & MongoDB, streamlining product management for large-scale operations.

KeyUA

Nov 2021 – Nov 2022

JavaScript Developer

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    Serverless Architecture: Developed a high-performance productivity app using Vue.js and AWS Serverless (Lambda, DynamoDB, S3).
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    Frontend Modernization: Spearheaded UI/UX updates for the main corporate portal, implementing responsive design patterns and modern CSS animations.