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I am a Senior Full Stack Engineer with strong, production-level frontend expertise, specializing in React, TypeScript, semantic HTML, CSS, and high-fidelity UI development. Over the past years, I’ve worked extensively on real-world interfaces where precision, accessibility, and performance directly shaped user experience.\n\nBeyond React, I work confidently with vanilla JavaScript, scalable CSS, browser quirks, and clean UI architecture. I also collaborate closely with designers, translating design language into code, manipulating SVG assets, and ensuring smooth integrations with backend Node.js services. I thrive in delivery-focused roles that require ownership, clarity, and the ability to ship high-quality work fast.…I am a Senior Full Stack Engineer with strong, production-level frontend expertise, specializing in React, TypeScript, semantic HTML, CSS, and high-fidelity UI development. Over the past years, I’ve worked extensively on real-world interfaces where precision, accessibility, and performance directly shaped user experience.\n\nBeyond React, I work confidently with vanilla JavaScript, scalable CSS, browser quirks, and clean UI architecture. I also collaborate closely with designers, translating design language into code, manipulating SVG assets, and ensuring smooth integrations with backend Node.js services. I thrive in delivery-focused roles that require ownership, clarity, and the ability to ship high-quality work fast.

Paweł Ostrowski

Full Stack Developer, Web Developer, Front-End Developer, +2

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I am a Senior Full Stack Engineer with strong, production-level frontend expertise, specializing in React, TypeScript, semantic HTML, CSS, and high-fidelity UI development. Over the past years, I’ve worked extensively on real-world interfaces where precision, accessibility, and performance directly shaped user experience.\n\nBeyond React, I work confidently with vanilla JavaScript, scalable CSS, browser quirks, and clean UI architecture. I also collaborate closely with designers, translating design language into code, manipulating SVG assets, and ensuring smooth integrations with backend Node.js services. I thrive in delivery-focused roles that require ownership, clarity, and the ability to ship high-quality work fast.…I am a Senior Full Stack Engineer with strong, production-level frontend expertise, specializing in React, TypeScript, semantic HTML, CSS, and high-fidelity UI development. Over the past years, I’ve worked extensively on real-world interfaces where precision, accessibility, and performance directly shaped user experience.\n\nBeyond React, I work confidently with vanilla JavaScript, scalable CSS, browser quirks, and clean UI architecture. I also collaborate closely with designers, translating design language into code, manipulating SVG assets, and ensuring smooth integrations with backend Node.js services. I thrive in delivery-focused roles that require ownership, clarity, and the ability to ship high-quality work fast.

Available to hire

I am a Senior Full Stack Engineer with strong, production-level frontend expertise, specializing in React, TypeScript, semantic HTML, CSS, and high-fidelity UI development. Over the past years, I’ve worked extensively on real-world interfaces where precision, accessibility, and performance directly shaped user experience.\n\nBeyond React, I work confidently with vanilla JavaScript, scalable CSS, browser quirks, and clean UI architecture. I also collaborate closely with designers, translating design language into code, manipulating SVG assets, and ensuring smooth integrations with backend Node.js services. I thrive in delivery-focused roles that require ownership, clarity, and the ability to ship high-quality work fast.

Skills

Experience Level

Expert

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Expert

Work Experience

Full Stack Engineer at Gorgias Press

January 1, 2022 - Present

Built and maintained complex React and TypeScript interfaces, ensuring semantic structure, crisp interactions, and consistent UX across browsers. Delivered features in an existing codebase, following patterns, improving structure, and refactoring without disruption. Worked directly with designers, converting high-fidelity UI requirements into accessible, pixel-accurate components. Created and optimized SVG-based icons, visual elements, and dynamic components used in dashboards. Integrated third-party APIs and SDKs into the frontend while coordinating closely with backend teams. Contributed to frontend build tooling and deployment processes, ensuring stable delivery pipelines. Ensured WCAG-aligned accessibility from ARIA usage to keyboard interaction and contrast considerations.

Full Stack Engineer at Glovo

February 1, 2020 - December 1, 2021

Developed responsive interfaces using React, JavaScript, and CSS, optimized for speed and reliability across browsers. Worked in hybrid codebases mixing React modules with non-framework JavaScript for lightweight performance-critical UI. Improved UI rendering performance by refining component structure, memorization, and asset loading strategies. Collaborated with designers to align visual behavior and interaction patterns across operational tools. Integrated APIs and SDKs for internal partners, ensuring consistent error handling and stable data flows. Contributed to frontend tooling, environment setup, and deployment improvements across distributed teams. Analyzed and leveraged backend Node.js code to ensure seamless system-level behavior.

Software Engineer at Zalando

August 1, 2017 - December 1, 2019

Built frontend components using React, JavaScript, and scalable CSS across large user-facing interfaces. Developed semantic layouts with accessibility and performance in mind, aligning with design and product requirements. Worked on SVG assets, icon systems, and responsive components for internal and customer-facing tools. Maintained existing codebases, keeping UI modules consistent and easy to extend. Collaborated heavily with backend teams to integrate APIs efficiently into the UI. Supported testing and debugging workflows to ensure smooth behavior across browsers and devices.

Junior Software Developer at Transition Technologies PSC

July 1, 2015 - July 1, 2017

Created interactive UI components using JavaScript, TypeScript, and early React/Angular patterns. Developed semantic layouts and CSS structures for responsive internal applications. Manipulated SVG assets and contributed to clean UI implementation across small feature sets. Worked with backend engineers to validate and integrate Node.js endpoints and service behavior. Participated in maintaining build pipelines, testing, and version control standards.