Hello, I'mMarcin Piniarski

Senior Frontend Engineer with 9+ years of experience designing frontend architectures for enterprise platforms and complex data-heavy applications.

Led frontend development across multiple products, introducing design systems, engineering standards, and performance improvements.

M.Sc
Computer Science
React
Next.js
Remote
Warsaw
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9+ years of experience working with companies worldwide

Led frontend development and introduced design systems across global teams in finance, e-commerce, and enterprise software.

Balyasny (BAM) logoSiemens logoOLX Group logoPearson IOKI logoDiva-E logoDynamic Solutions logoGroundFog logoNo Spoon logoAppchance logo

Quick Overview

Key qualifications and expertise

Education

MSc in Computer Science - Distributed Systems

Full-Stack Development

9+ years, frontend-focused with backend expertise

Core Technologies

TypeScript
TypeScript
React
React
Vue
Vue
Next.js
Next.js
GraphQL
GraphQL
Node.js
Node.js
Kotlin
Kotlin
Playwright
Playwright

Main Expertise

Frontend Development
Design Systems
Component Architecture
Performance Optimization
Testing

Want to know more about my background, skills, and what I can bring to your team? Check out my detailed profile.

Learn More About Me

Services I Provide

Leveraging 9+ years of experience to help organizations build exceptional frontend experiences

Web Projects Delivery

End-to-end web project delivery from initial design to production deployment, ensuring quality and performance at every stage.

Software Engineering Management

Leading engineering teams with focus on delivery, code quality, and best practices. Establishing workflows and development processes that scale.

Leading a Frontend Team

Building and mentoring high-performing frontend teams. Fostering technical excellence and collaborative culture across distributed teams.

Architectural Advisory

Providing strategic guidance on frontend architecture, design systems, and technical decisions for scalable enterprise applications.

Featured Projects

Personal projects showcasing frontend development skills and modern web technologies.

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Real-time multiplayer word association game built with PartyKit, React, and TypeScript, demonstrating hexagonal architecture with shared game logic across client and server.

ReactNext.jsTypeScriptPartyKitWebSocketsTailwind CSS

Contact Information

Location

Warsaw, Poland (Remote available)

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