Nick
Korolev

Average Review

0.00

Reputation

20

Finished gigs

0

Finished jobs

0

Website

Country

Not specified

Skills

Web, Mobile & Software Dev

Engineering & Architecture

Back End Developer

Web Programming

Desktop Applications

Web Application

Specialization

Senior Product Engineer — React / Next.js / Payments / AI Integrations

Hourly rate

$50/hr

About me

What I can help with: React / Next.js — bugs, slow pages, broken builds, deploy issues Node.js — APIs, webhooks, integrations with third-party services Payments, auth, widgets embedded on other sites Telegram bots LLM / AI integrations Stack: TypeScript, React, Next.js, Vue, Nuxt, Node.js, Nest.js, PostgreSQL, MongoDB, Docker. Send the repo and describe what's wrong. I'll tell you if I can take it. github.com/nick-korolev

https://www.linkedin.com/in/nickkorolev/

https://github.com/nick-korolev

Work experience

Apifonica

December 2024 – Current time

Job title

Full Stack Developer

Work experience & achievements

• Built 3 new services from scratch, including deployment pipelines and system integration • Developed Agentic UI for LLM/AI agent interactions with real-time WebSocket communication • Designed an edge function orchestration service; improved system architecture and developer experience Stack: TypeScript, React, Node.js, WebSockets, Docker, CI/CD

Stenn International

August 2023 – December 2024

Job title

Software Engineer

Work experience & achievements

• Architected an email rendering microservice (React-style), cutting development time from 1 day to 2 hours • Reduced bundle size by 85% and build time from 9 minutes to 1 minute; raised page score from 60 to 90 • Eliminated 120K+ lines of dead code and reached 91% test coverage • Conducted 20+ technical interviews Stack: TypeScript, React, Node.js, Webpack, Vite

FundraiseUp

February 2022 – August 2023

Job title

Software Engineer

Work experience & achievements

• Reduced embed code bundle size by 100% and optimized rendering of embedded payment elements • Developed custom Webpack and Babel plugins for build optimization • Implemented RTL localization Stack: TypeScript, JavaScript, Webpack, Babel, Node.js

IdPowers

February 2020 – February 2022

Job title

Frontend/Backend Lead

Work experience & achievements

• Led development of 10+ products: ERP systems, banking UI, a blockchain/NFT platform and a chess backend • Built full stack solutions: Vue.js and React on the frontend, Nest.js and Node.js on the backend • Delivered Electron desktop apps and Telegram bots Stack: TypeScript, Vue.js, React, Nest.js, Node.js, MongoDB, PostgreSQL, Electron.js

Geekpines

February 2018 – February 2020

Job title

Full Stack Developer

Work experience & achievements

• Built a cryptocurrency exchange and a mining pool • Developed a cross-platform mobile app with NativeScript Stack: JavaScript, Node.js, Vue.js, NativeScript, MongoDB

Industrial Electronics Manufacturer

February 2016 – February 2018

Job title

Radio Engineer

Work experience & achievements

• Programmed microcontrollers in C and Python • Designed PCBs for inertial navigation sensors (gyroscopes, accelerometers) Stack: C, Python, embedded systems, PCB design

Education

Izhevsk State Technical University

Graduation year: 2018

Level of study

Bachelor

Major / Field of study

Radio Engineering

0

(0)

I will debug and fix your React, Vue, Next.js or Node.js app

Web, Mobile & Software Dev

$250