m
mcarrow8338

Serhii

@mcarrow8338

Lead Fullstack Engineer, Master in Efficient and Secure SaaS Architectures

Ukraine
English, Ukrainian, German
About me
Senior Full-Stack Developer building scalable SaaS, MVPs, and high-load production apps. I bridge React, Next.js frontend architecture with Node.js/Python backends to deliver seamless end-to-end solutions. Expertise in dashboards and analytics processing thousands of daily events. Proven impact: built platforms supporting up to 50K users and 300K+ monthly API requests with 99.9% uptime. Focused on engineering excellence that drives measurable business growth. Please feel free to propose a project that you want to build.... Read more

Skills

m
mcarrow8338
Serhii
Offline • 
Average response time: 1 hour

See my services

Custom Websites
I will develop scalable saas dashboards and admin panels using react and nextjs
From$200 / projectMore details
Custom Websites
I will build a custom fullstack CRM system for your business
From$450 / projectMore details

Portfolio

Work experience

Upwork

Senior Fullstack Developer

Upwork • Freelance

Aug 2020 - Present • 5 yrs 11 mos

Web Development: Engineered 20+ responsive, high-traffic websites using React and Next.js, focusing on pixel-perfect UI. Performance Engineering: Implemented advanced SEO strategies and code refactoring, resulting in significantly improved Core Web Vitals. Ecosystem Integration: Developed custom interfaces for various RESTful and GraphQL APIs, ensuring efficient data synchronization.