Frontend Mastery
Building fast, accessible interfaces with clean architecture and maintainable component systems.
Available for Contract & Freelance ProjectsAvailable for Contracting
Frontend Developer
Rene Krajnc
I help teams ship polished products with React, Next.js, and TypeScript.
6+
Years Experience
Senior
Frontend Level
B2B SaaS
Product Focus
Tech Stack
Next.js
TypeScript
Git
Docker
Jira
REST API
CI/CD
Headless CMS
React
SCSS/CSS
JavaScript
SEO
Responsive Design
Node.js
GitHub
SQL
Material-UI
About Me
Frontend Developer specializing in modern web interfaces
I build production-ready web applications using React, Next.js, and TypeScript. With experience across the full development lifecycle, I deliver clean, maintainable code and pixel-perfect implementations. My background transitioning from military service has instilled strong discipline, problem-solving skills, and the ability to thrive in fast-paced environments.
Mobile Ready
Responsive, device-aware layouts that feel natural on phones, tablets, and desktop screens.
Design Driven
Translating product ideas into clear visual systems with attention to hierarchy, spacing, and motion.
Work Experience
Delivering production-ready frontend solutions with React, Next.js and TypeScript for 6+ years.
Senior Frontend Engineer
Present
- Build the frontend (React, Next.js, TypeScript) for modern web products
- Build scalable web apps with React, Next.js, TypeScript and React Query
- Mentor junior developers, conduct code reviews and drive frontend best practices
- Contribute to architectural decisions for production-grade, high-traffic web apps
ReactNext.jsTypeScriptReact Query
Software Engineer
- Built React applications for Slovenian Railways, Arriva, Nomago and Marprom
- Developed ticket purchasing platforms and public transport passenger apps
- Created interfaces for ticket vending machines deployed at train stations across Slovenia
- Integrated backend APIs ensuring reliable data flow across complex transport systems
ReactTypeScriptREST APIs
Frontend Developer
- Developed web portals and admin interfaces for a smart parcel delivery SaaS platform
- Built user, company and delivery-box management UIs serving an international client base
- Integrated APIs and developed reusable UI components within a DotNetNuke CMS
- Collaborated in an international agile team delivering cross-border logistics solutions
ReactJavaScriptREST APIsDotNetNuke