Maksym Kashliatskyi

Fullstack JavaScript Engineer

kashlyatsky@gmail.com LinkedIn GitHub

Professional Summary

Fullstack JavaScript Engineer with 4+ years of experience building robust SaaS platforms and enterprise applications. Expert in React, Node.js, and Cloud Infrastructure. Proven track record of architecting scalable systems from zero to deployment, focusing on performance, maintainability, and clean documentation.

Experience

Zup OÜ

Nov 2022 – Present

Full Stack Developer

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    SaaS Platfrom (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.