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Kirill Petunin

@kirillpetunin

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Senior frontend engineer focused on performant React and TypeScript solutions for large-scale systems.

Russian Federation

Message

What I'm looking for

I seek remote roles focusing on React/TypeScript performance and scalable architectures, in collaborative Agile teams offering mentorship and impact.

I am a Senior Frontend Engineer with 7+ years building scalable web applications for international companies, specializing in React, TypeScript, Node.js and Nest.js. I design performant frontends and microservices, and I created the open-source SnowUI library used in production.

I have led cross-functional teams, improved system scalability by 200%, and reduced application load time from 10 to 2 seconds through lazy loading, data virtualization and render optimizations. I contributed to payment systems processing over 1M daily transactions and implemented extensive testing coverage.

I work in Agile/Scrum environments, collaborate closely with product and backend teams, and am open to remote roles worldwide that value security, performance, and maintainable architecture.

Experience

Work history, roles, and key accomplishments

Current

Senior Frontend Engineer

Current

T1 Innotech

Nov 2024 - Present (1 year 3 months)

Architected and developed a cryptocurrency project with React, Remix and Node.js focusing on security and performance; extracted monolith into microservices (BFF and frontend), improving scalability by 200% and reducing deployment time.

React Remix TypeScript Node Microservices BFF Performance Optimization Agile Jira

Senior Frontend Developer

Grid Dynamics

Jun 2021 - Aug 2024 (3 years 2 months)

Led a cross-functional team of 5 to build a comprehensive UI library and update dependencies for a Fortune 500 client; optimized application load time from 10s to 2s and improved payment method processing handling 1M+ daily transactions.

React TypeScript Performance Optimization Lazy Loading Virtualization Payments Team Leadership CI CD

Frontend Developer

Globus-IT

Sep 2020 - Jun 2021 (9 months)

Developed an internal admin panel for a major Russian bank serving 500+ daily users and contributed to a mobile investment app with 10K+ active users; implemented unit, e2e and integration tests achieving 85%+ coverage.

React TypeScript Jest React Testing Library Playwright E2E CI CD Banking Applications

Frontend Developer

Chitai Gorod

Feb 2020 - Sep 2020 (7 months)

Implemented a new payment method and other frontend features using JavaScript and HTML; assisted in requirements gathering and contributed to successful delivery of product enhancements.