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Yahor YanushkevichYY

Yahor Yanushkevich

Frontend | React, Next.js, TypeScript, JavaScript

€180/day
Warsaw, PL
3-7 years

Average response time: 1 hour

About Yahor

I’m a Frontend Developer with experience delivering responsive, scalable, and accessible web applications. I specialize in React, Next.js, TypeScript, and Tailwind CSS, building projects that prioritize performance, SEO, and clean architecture.
My work spans e-commerce platforms, enterprise dashboards, and educational tools. At FCB Health Spark, I developed video playback features that improved viewership by 20% and interactive learning modules that boosted retention by 30%.

My core skills include:
- React, Next.js, TypeScript, JavaScript (ES6+)
- Tailwind CSS, Material UI, Styled Components
- REST APIs, Zustand, Redux, GraphQL
- Automated testing (Jest, Cypress), Git, CI/CD pipelines
- Design integration with Figma and Adobe XD

I work closely with cross-functional teams in Agile environments, and I’ve mentored junior developers, led sprint planning, and optimized SPAs to reduce load times by up to 30%. My goal is always to deliver high-quality code that meets user needs and business objectives.
I’m currently open to freelance or contract roles involving modern frontend stacks. If you're building a product that values performance, accessibility, and clean UI, feel free to reach out — I'd be glad to discuss how I can help.
  • English

    Fluent

Can work on-site
Warsaw (up to 50km)

Experience

  • FCB Health Spark
    Senior Frontend Developer
    EDUCATION AND E-LEARNING
    September 2022 - March 2026 (3 years and 6 months)
    Warsaw, Poland
    • Completed custom video playback features, increasing user engagement by 20%.
    • Engineered interactive e-learning modules that enhanced knowledge retention by 30%.
    • Refactored API calls, improving data retrieval speed by 20%.
    • Mentored junior developers on React best practices, reducing onboarding time by 25%.
    React.js Typescript
  • Deskpro
    Frontend Developer
    CONSULTING AND AUDITS
    August 2020 - September 2022 (2 years and 1 month)
    London, UK
    • Worked on API driven admin panel and agent panel.
    • Built and maintained a UI library with over 80 reusable React components.
    • Integrated internationalization (i18n), enabling platform expansion to 5+ global markets.
    • Implemented automated testing (Jest, Cypress), improving test coverage and reducing bugs by 25%.
    React.js Typescript redux HTML/CSS JavaScript
  • NantucketRentals
    Frontend Developer
    REAL ESTATE
    July 2019 - August 2020 (1 year and 1 month)
    Nantucket, MA, USA
    • Designed and implemented a responsive property listing application using Next.js and Material UI, enhancing mobile usability by 18%.
    • Integrated RESTful APIs to support 500+ data entries for listings with fast and reliable access.
    • Collaborated with designers and backend engineers to standardize UI components and reduce page load time by 15%.
    Next.js HTML/CSS JavaScript

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Education

  • Bachelor's Degree
    University of Lodz
    2019
    - Capstone: Designed a full-stack student portal with PHP and MySQL. - Core Courses: Data Structures, Web Development, Software Engineering.

Skill set

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