s
sapp532

Sergei Sidorov

@sapp532

Fullstack Architect

Switzerland
Russian
About me
Senior full-stack developer with 10+ years of experience building SaaS products, high-load web apps, and complex frontend systems. Core stack: React, Next.js, Node.js, PostgreSQL, MongoDB, AI (LLM integrations). I help clients build scalable products from MVP to production, design system architecture, and integrate AI features. I focus not just on code, but on business value and long-term solutions. Let’s build something that actually works and grows.... Read more

Skills

s
sapp532
Sergei Sidorov
Offline • 

See my services

Full Stack Web Applications
I will build your saas mvp with react nextjs nodejs and ai
From$80 / projectMore details
Full Stack Web Applications
I will build a custom CRM, admin dashboard and web app
From$180 / projectMore details

Portfolio

Work experience

Sberbank

Head of Development — Web Platform

Sberbank • Full-time

Dec 2015 - Jan 2025 • 9 yrs 1 mo

- Led frontend development for large-scale web platforms in fintech - Built and launched high-traffic products used by millions of users - Designed modular frontend architecture (micro frontends) - Managed development teams (2–6 engineers) - Delivered multiple complex landing pages and internal tools under tight deadlines