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Alexandr Sopilnik

Developer: JavaScript, TypeScript, Rust, React, Next.js, Node.js, Tauri

📍 Located in: Kazakhstan 🕐
🎯🤝 Open to one-off or long-term work ⏱️ 40 hrs/week available
👤 Freelancer
✔ Verified
⭐ Zinner Level 1
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💰 Pricing
Usual Hourly Rate: $30.00/hr
Interested in projects valued: $30.00
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🛡️ Verified since September 2026

Member since
Sep 2026
Zinns listed
0
Last active
Just now

About

If your website or app is broken, slow, or was built with AI and nobody can maintain it now, I can fix it. If you are starting from scratch, I can build it properly the first time.

I have been a web developer since 2016 for e-commerce and small-business clients: HTML, CSS and JavaScript first, then TypeScript, React and Next.js on the front end with Node.js behind them. I build and fix WordPress and WooCommerce sites too, and since 2024 I have been writing Rust most working days. The largest project so far was the backend of an educational platform: microservices on axum, Kafka between services, PostgreSQL and Redis, gRPC inside and REST for the front end.

What I take on:
- Apps generated with AI tools that work for the founder but are not ready for real users yet: flaky logins, payments that fail, missing access rules, code nobody wants to touch
- Bug fixes and cleanup on existing WordPress, WooCommerce, React, Next.js and Node.js projects
- New sites and web apps, with the interface designed and hand-coded by me in HTML, CSS/SCSS and React
- Desktop apps with Tauri and mobile apps with React Native
- Backends and APIs in Node.js/TypeScript (Express, NestJS) or Rust; payment and third-party integrations; PostgreSQL with row-level security for paid plans
- Performance: slow pages, slow endpoints, slow queries

A few results, all under NDA:
- Rewrote a legacy PHP backend in Node.js/TypeScript with the public API kept compatible, so the front end shipped unchanged. Median response time on the main endpoints dropped by roughly 3x.
- Moved a jQuery front end to React page by page while the product stayed live.
- Worked on paid access enforced inside PostgreSQL: row-level security policies and a separate role for each subscription tier.

How I work: async and in writing. I write the scope down before starting and prefer a fixed price for anything well defined, hourly while the shape is not clear yet. You get a short written update at the end of each working day, and no calls are needed. I use AI coding tools every day as an assistant, and I read and test everything they produce. Working hours are 10:00-20:00 Almaty time (UTC+5), which covers most of the European business day and the start of the business day on the US East Coast.

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