Open to opportunities

Nikolai Demin

@nikolaidemin

Message

I build high-load full-stack products with Laravel, Vue, React, and cloud infrastructure.

Georgia

Message

What I'm looking for

I'm looking to build and improve high-load web or mobile products where I can own architecture, performance, APIs, and delivery. I work well in remote distributed Agile teams and value complex technical challenges, clean code, and scalable cloud infrastructure.

I've delivered high-load B2B and B2C products for HumanVenture, Igoroom, KazMunayGas, and more than 100 Upwork clients across crypto, travel, fintech, telecom, real estate, and marketplaces.

At HumanVenture, I built Nuxt-based product UI, integrated crypto payments, WalletConnect, and sportsbook APIs, reduced admin load times from roughly 60 seconds to 1 second, and automated localization across 22 languages from a week to about an hour. I also shipped an Ionic mobile app by reusing the existing Vue codebase rather than rewriting it.

I design scalable Laravel, Node.js, and Nest.js backends, modern Vue and React frontends, resilient APIs, and cloud-native deployments. I enjoy refactoring complex systems, migrating monoliths to microservices, improving performance, mentoring engineers, and using AI tools daily for reviews, debugging, and architectural decisions.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Developer

Current

HumanVenture

Nov 2023 - Present (2 years 9 months)

Developed web application UI from Figma using Nuxt.js and TypeScript, delivered reusable component library, integrated crypto payments and SportBook betting API, optimized performance, and developed mobile app with Ionic Framework.