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Rene KrajncRK

Rene Krajnc

Senior React / Next.js Developer

€300/day
Maribor, SI
3-7 years

Average response time: 1 hour

About Rene

Senior React / Next.js developer with 6+ years of experience building production web applications using TypeScript.

I work with startups and companies that need reliable, scalable frontend applications.

Specializations:
  • React and Next.js development
  • scalable frontend architecture
  • REST API integrations
  • performance optimization

Tech stack:
React, Next.js, TypeScript, TanStack Query, Redux Toolkit.

Fluent in English and German.

Available for remote freelance projects.
Open to part-time collaborations (10–20 hours per week).

Website: GitHub:
  • English

    Native or bilingual

  • Slovenian

    Native or bilingual

  • German

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Equaleyes
    Senior Frontend Engineer
    August 2023 - Today (3 years)
    Maribor, Slovenia
    • Lead frontend development for blockchain-based products for the British company nChain / Teranode
    • Develop modern web applications using React, Next.js, TypeScript and React Query
    • Collaborate closely with backend teams and product stakeholders
    • Mentor junior developers and participate in code reviews
    • Contribute to architectural decisions and frontend best practices
    Next.js React.js Typescript Docker API REST
  • Margento
    Software Engineer
    January 2022 - August 2023 (1 year and 7 months)
    Maribor, Slovenia
    • Developed web applications for major Slovenian transportation providers including Slovenian Railways, Arriva, Nomago and Marprom
    • Built React applications for ticket purchasing systems and public transport platforms
    • Developed interfaces for ticket vending machines used at train stations across Slovenia
    • Worked closely with backend teams to integrate APIs and ensure reliable data flow
    JavaScript React.js VueJS ASP.NET MVC API REST
  • Direct4.me
    Frontend Developer
    September 2019 - December 2021 (2 years and 3 months)
    Maribor, Slovenia
    • Developed web portals and administration interfaces for smart parcel delivery systems
    • Built frontend interfaces for managing users, companies and parcel delivery boxes
    • Integrated APIs and developed UI components using modern JavaScript frameworks
    • Worked in an international agile team environment
    React.js DotNetNuke (DNN) JavaScript HTML5 CSS3

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Education

  • Engineer (Software
    Higher Education College Academia
    2022
    Engineer (Software
  • Driving Lincence, Category B
    Driving Lincence, Category B

Skill set

Categories