Looking for a job

Artur Sorokolit

@artursorokolit

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I build secure, high-performance full-stack web applications with React, Node.js, Django, and PostgreSQL.

Ukraine

Message

What I'm looking for

I'm looking to build secure, high-performance full-stack products where I can own architecture, improve reliability and performance, collaborate closely with product and design, and continue mentoring teammates.

At Graintrack, I engineer commodity operations software, including a React 19/RxJS data grid handling 4,000+ dynamic data points at sub-16ms render times. I also build Python/Django calculation engines and optimize PostgreSQL queries, reducing query overhead by 35% and REST API latency by 30% under peak loads.

I've delivered consumer-facing React, Next.js, Node.js, and Express applications for early-stage startups, including Telegram Web Apps and self-hosted infrastructure secured with Cloudflare Zero Trust. I bring a security-conscious approach shaped by secure SDLC and OWASP Top 10 practices, alongside hands-on ownership of architecture, code reviews, testing, mentoring, and product collaboration.

Experience

Work history, roles, and key accomplishments

Current

Full-Stack Software Engineer

Current

Graintrack

Aug 2025 - Present (1 year)

Engineered high-performance React 19 data grids and optimized Python/Django backends, reducing query overhead by 35% and API latency by 30%. Led security audits aligned with OWASP Top 10 and mentored team members.

React RxJS React Query Python Django PostgreSQL REST APIs OWASP Top 10 Playwright Vitest TypeScript Docker CI CD

Full-Stack Developer

Independent

Jun 2023 - Jul 2025 (2 years 1 month)

Built high-performance web applications for startups using React and Next.js, optimizing for 60 FPS animations and mobile WebView environments. Deployed self-hosted infrastructure with Cloudflare Zero Trust and automated deployments.

React Next.js SQLite Cloudflare Docker Git CI CD

Frontend Developer

Realis

Jan 2025 - Jun 2025 (5 months)

Developed interactive game features for a Telegram Web App, reducing initial page load time by 30% on low-end mobile devices. Delivered multiple React features per sprint and ensured smooth animations across devices.

React TypeScript JavaScript CSS Performance Optimization Mobile Development