Andrii K.

Frontend Developer

Talented JavaScript, React.js and TypeScript developer with 3+ years of experience.

Andrii is a seasoned software engineer with over six years of experience, working mainly as a frontend developer.

Throughout his experience, he gained substantial expertise in JS and React.js and was responsible for delivering user-friendly experiences in collaboration with backend developers.

Andrii is well-skilled in graphic design applications such as Adobe Illustrator, Adobe Photoshop, and Figma.

Main expertise

  • JavaScript
    JavaScript 8 years
  • React.js
    React.js 8 years
  • TypeScript
    TypeScript 7 years

Other skills

  • Adobe Photoshop
    Adobe Photoshop 6 years
  • Adobe Illustrator
    Adobe Illustrator 6 years
  • Figma
    Figma 4 years
Andrii

Andrii K.

Italy

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Selected experience

Employment

  • Software Engineer

    DREM Energy AB - 3 years 2 months

    DREM Energy AB is a Swedish company delivering software tools for renewable energy monitoring and management.

    • Delivered two Redwood.js applications, including MVP development and successful production launches.

    • Reduced first load time from over 10 seconds to ~1 second, significantly improving performance.

    • Created a shared utility/constants package for both frontend and backend.

    • Built backend services to bypass Redwood.js serverless limitations, enhancing scalability.

    • Composed dynamic GraphQL queries to support evolving schema and data needs.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • React.js React.js
    • TypeScript TypeScript
    • GraphQL GraphQL
    • Chakra UI Chakra UI
    • RedwoodJS
    • Vite Vite

  • Front-end Developer

    Protetiko AB - 4 years 2 months

    Protetiko AB develops web-based dental and medical management tools in Sweden.

    • Developed core business logic for multiple React applications.

    • Built reusable packages for UI components, data fetching, i18n, and utilities.

    • Led development on a large-scale Next.js application.

    • Wrote and maintained unit tests to ensure code reliability.

    • Acted as lead developer in the final year of engagement.

    Technologies:

    • Technologies:
    • React.js React.js
    • TypeScript TypeScript
    • Redux.js Redux.js
    • Next.js Next.js
    • Unit Testing

  • Frontend developer

    Mjolnir LCC - 1 year 7 months

    • React applications
    • Express.js REST API
    • UI Kit development
    • SCSS/Stylus/PostCSS
    • SVG graphics/D3

  • Front-end developer

    Mjolnir LCC - 1 year 7 months

    Mjolnir LLC specializes in building data-driven, interactive web platforms with visual analytics.

    • Developed React applications and REST APIs using Express.js.

    • Built and maintained internal UI kits and styled components using SCSS.

    • Implemented interactive charts using SVG/D3.js.

    • Worked on both frontend and visualization layers in tandem.

    Technologies:

    • Technologies:
    • React.js React.js
    • CSS CSS
    • Express.js Express.js
    • SCSS SCSS
    • UIKit UIKit
    • D3.js D3.js

  • Frontend developer

    Prospect-line WEB-SEM Studio - 1 year

    • Bootstrap based landing pages
    • WordPress engagements
    • JavaScript applications

  • Front-end developer

    Prospect-line WEB-SEM Studio - 1 year

    A boutique web and marketing agency providing web development and SEM services for small businesses.

    • Developed mobile-first landing pages using Bootstrap.

    • Created and customized WordPress websites for client campaigns.

    • Built interactive JS elements to improve conversion metrics.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • Bootstrap Bootstrap
    • WordPress WordPress

  • Frontend developer

    Software Finance BP Ukraine LLC - 1 year

    • Semantic coding
    • Responsive design
    • JavaScript web-applications development
    • Dedicated server configuration and maintenance

  • Front-end developer

    Software Finance BP Ukraine LLC - 1 year

    A Ukrainian company focused on developing banking software for online platforms.

    • Developed responsive web apps using modern JavaScript.

    • Built semantic layouts and applied accessibility best practices.

    • Supported server configuration and deployments on dedicated infrastructure.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • SCSS SCSS

Education

  • BSc.Electronics

    NTUU “KPI” · 2006 - 2010

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