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Senior Frontend React & Web Engineer | React, NextJS, TS, DevOps
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Senior Frontend React & Web Engineer | React, NextJS, TS, DevOps

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senior-13j/README.md

Arkadii Kotliarov

Senior Frontend React & Web Engineer

React, Next.js, TypeScript, real-time interfaces, AI-assisted products, and production-minded delivery.

LinkedIn GitHub Location

Focus

I build polished React and Next.js applications with strong TypeScript boundaries, reusable UI systems, real-time data flows, and practical backend understanding. My strongest area is frontend engineering, but I am comfortable working across Node.js services, API contracts, CI/CD, Docker, databases, and production QA.

Current direction:

  • Product-grade React and Next.js interfaces with clean state, forms, data fetching, charts, and accessibility.
  • Real-time dashboards and workflows using WebSockets, Socket.IO, event streams, and optimistic UI.
  • AI-assisted user experiences, from workflow automation to decision-support interfaces.
  • Full-stack portfolio systems with Node.js, MongoDB, SQL, Firebase, Redis, Kafka, Docker, tests, docs, and CI.
  • Frontend leadership: sprint task splitting, code review, UI architecture, and mentoring frontend developers.

Featured Work

Project What it shows Stack
Crypto Earner Installable crypto futures workstation with Binance candles, local strategy scoring, paper execution, Phantom wallet visibility, SSO/security flows, billing test flows, PWA, Electron installers, Cypress, CI, and Vercel deployment readiness. React 19, Vite, TypeScript, Electron, PWA, lightweight-charts, Cypress, Vitest, Vercel
LifeTracker Consumer-facing habit and progress tracker with realtime check-ins, challenges, achievements, dashboards, service boundaries, event contracts, Docker runtime, CI, docs, and AWS Lambda integration. React 19, Vite, Node.js, Express, MongoDB, Redis, Kafka, Socket.IO, Docker, AWS Lambda
Professional frontend work Production React/Next.js interfaces, AI-integrated dashboards, WebSocket-driven screens, healthcare product workflows, frontend team leadership, sprint planning, and code review. React, Next.js, TypeScript, Tailwind CSS, shadcn/ui, React Query, Azure DevOps

Tech Stack

Frontend

React Next.js TypeScript JavaScript Tailwind CSS React Query Redux Vite

Backend, Data, And Realtime

Node.js Express MongoDB Redis Kafka Socket.IO Firebase

Delivery

Docker GitHub Actions Azure DevOps Vercel Vitest Cypress

How I Work

  • I prefer readable UI architecture, typed contracts, small reusable primitives, and explicit data-flow decisions.
  • I care about product feel: responsive layouts, fast scanning, clear states, accessible controls, and useful empty/error states.
  • I verify work through linting, type checks, unit tests, browser QA, production builds, docs, and deployment notes.
  • I can lead frontend execution: split sprint work, review code, keep UI consistency, and unblock backend/API integration issues.

GitHub Profile Snapshot

Area Signal
Main public portfolio cryptoearner and lifetracker
Strongest language signal TypeScript
Current GitHub positioning Senior frontend engineer with practical full-stack, realtime, QA, and delivery experience
Best proof points Rich README files, CI setup, Docker/runtime notes, tests, browser QA, deployment docs, and polished product screenshots

Contact

The best place to reach me professionally is LinkedIn:

LinkedIn

Pinned Loading

  1. cryptoearner cryptoearner Public

    Electron desktop utility for watching and automating short-timeframe crypto futures workflows. The app reads public Binance Futures candles, renders a candlestick chart, ranks multi-strategy order …

    TypeScript 1

  2. lifetracker lifetracker Public

    Consumer real-time habit tracker built with React 19, Node.js microservices, MongoDB, Redis, Kafka, Socket.IO, Docker, CI, and AWS Lambda.

    TypeScript 1