Mateo Rumac | Resume

Professional Summary

Full-stack developer with hands-on experience delivering production web applications using React, Astro, Vite, PHP, MySQL and REST APIs. Strongest in frontend development, with practical experience across booking workflows, Stripe payments, analytics dashboards, role-based tools, multilingual interfaces and production deployment. Comfortable owning work from UI implementation and API integration through release and maintenance.

Professional Experience

Full-stack Web Developer

D&A Smart Solutions - Zagreb, Croatia

Nov 2024 - Present

Develop and deploy responsive production websites and web applications using React, Astro, Vite, JavaScript and PHP.
Build custom PHP endpoints and integrate REST APIs for availability, pricing, reservation and property-management workflows.
Implement Stripe payment flows with 3D Secure and manual capture, including validation and production troubleshooting.
Create role-based admin and property-owner dashboards, plus Chart.js visualizations for revenue, occupancy and OTA-channel KPIs.
Deliver multilingual, mobile-first interfaces with technical SEO, accessibility considerations and GDPR-aware cookie consent.
Manage releases through Bitbucket, SSH, Composer and cPanel; use Postman for API testing, debugging and verification.

Selected Independent Projects

DevTools

Privacy-first browser toolkit

JavaScript, Canvas, File and Blob APIs

Created nine practical tools for image conversion, favicon and Open Graph generation, contrast checking, launch auditing and related workflows. Processing stays locally in the browser with no file uploads.

Open DevTools

Nightfall

Browser arcade flight game

Three.js, JavaScript, WebGL

Built independently without a game engine, featuring endlessly streamed procedural terrain, terrain-aware collision, PBR/bloom rendering, audio transitions, keyboard and touch controls, and reduced-motion support.

Play Nightfall

Technical Skills

Frontend

JavaScript
React
Astro
Vite
Next.js
HTML5
CSS3
Chart.js
Three.js
Responsive UI
Accessibility
i18n

Backend

PHP
MySQL
REST API Development
Third-party API Integrations
Authentication & Authorization
Stripe Payments
Webhook Processing
Server-side Validation
Data aggregation

Tools & Delivery

Git
Bitbucket
Postman
Composer
SSH
cPanel
API debugging
Technical SEO
Production deployment
Email / SMTP

Education & Languages

B.Sc. in Informatics

Juraj Dobrila University of Pula, Faculty of Informatics

2019 - 2024

Thesis: Artificial Intelligence and Frontend Web Development (2024).

Languages: Croatian (native), English (C1), German (B1)