Content-driven websites
CMS architecture and content modeling
Hey, I'm Tonči Marinac
Fullstack developer with 2 years of experience and a Master's degree (MSc) in Informatics, based in Rijeka, Croatia.
I specialize in building e-commerce and content-driven applications with React ecosystem.
I'm currently open to new freelance projects. If you have an idea you'd like to discuss, feel free to reach out!
Freelance Services
I help businesses grow with conversion-focused websites, SEO-driven content, and reliable long-term support.
Web shops (e-commerce)
Product catalog and collection structure
SEO and AI SEO blogs
Technical SEO audits and on-page implementation
Need a website that actually brings business results?See all services, process details, and client testimonials.
Explore ServicesTech Stack
The tech stack I use for my personal and client work:
Fullstack
- React
- Next.js
- Astro.js
- TanStack Query
- TypeScript
- shadcn/ui
- Tailwind
Backend & Services
- Clerk
- Better-auth
- Postgres
- Convex
- Prisma
- Sanity CMS
- AI SDK
Selected Projects
These are the projects I’m most proud of, ranging from personal side projects to professional work:
Fiskalio
PersonalFiskalio is a personal finance management application that helps users track and organize their bills across multiple properties. The app features secure credential storage, monthly bill tracking with due dates, and a clean responsive UI with dark/light theme support.
Next.jsConvexClerkShadcnTailwind+1
Apartments Raić
FreelanceComplete redesign and redevelopment of a family apartment rental website in Mali Lošinj. Built with Next.js, multilingual support, responsive design, smooth animations, secure contact forms, and modern performance-focused architecture.
Next.jsTailwindShadcnMotionnext-intl
Pastplied
PersonalPastplied is a job application tracking system built with Next.js, TypeScript, Clerk and Convex that helps job seekers manage applications efficiently. Features AI-powered job data extraction using Google's Generative AI to automatically parse data, eliminating manual data entry.
Next.jsConvexTailwindGeminiClerk+2
Eventwave
FreelanceProfessional frontend developer for Eventwave, a live event management and ticketing platform. Built a complex, responsive Next.js frontend with Tailwind and customized shadcn components, including interactive maps, timelines, multi-step forms, light/dark mode, and multilanguage support.
Next.jsTailwindShadcnLaravel
Experience & Education
Professional and academic journey.
Nov 2025 - Mar 2026
Web Developer
Nivago d.o.o.
Ul. Braće Cetina 4, 51000, Rijeka (Croatia)
- Developed and maintained websites using HTML, CSS (Bootstrap), and JavaScript, delivering responsive layouts for desktop and mobile devices
- Built and customized e-commerce and content-driven websites using PHP or Classic ASP, depending on project requirements
- Implemented and maintained custom CMS solutions, adapting frontend templates to client-specific needs
Aug 2025 - Nov 2025
Support Engineer
Spark Adriatic
Spinčićeva ul. 41, 51000, Rijeka (Croatia)
- Managed and resolved technical issues across multiple specialized pipelines for a major U.S. BBQ restaurant chain, ensuring high system uptime
- Performed advanced troubleshooting for payment terminals (PAX) to ensure seamless transaction processing
- Resolved internal POS application bugs, network connectivity issues, and hardware failures (tablets, cash drawers)
- Executed real-time updates and database management for digital menus across all locations
- Acted as a technical point of contact to improve service flow and guest satisfaction through rapid incident resolution
Jul 2024 - Aug 2024
Frontend Developer Intern
Kupuj Online d.o.o.
Fiorello la Guardia 13, 51000, Rijeka (Croatia)
- Translated Figma designs into responsive frontend pages for the Visit Rijeka Shop and Hacienda nightclub admin web shop, ensuring visual consistency
- Gained hands-on experience with SSSR (Signals, State, Selectors, Reducers) architecture in Angular, improving code organization and state management practices
Oct 2022 - Sep 2023
Frontend Developer
Juice d.o.o.
Prolaz Marije Krucifkse Kozulić 1, 51000, Rijeka (Croatia)
- Maintained and enhanced existing web applications by adding new features and improving UI/UX across Vue.js, embedded JavaScript, and Angular codebases
- Collaborated with designers to implement a complete redesign of the Visitorapp web application
- Attended daily morning Scrum meetings as part of an Agile development workflow
Latest Blogs
My recent thoughts and writings:
A practical explanation of SSR, CSR, SSG, and ISR in Next.js. Learn how each rendering method works, when to use it, and see real code examples to help you choose the right strategy for performance, SEO, and scalability.
A practical breakdown of how I achieved 100 scores across all Lighthouse metrics on my portfolio. From fixing accessibility issues like non-descriptive links with Tailwind’s `sr-only` class to SSR/SSG performance optimizations and clean runtime practices.
Find me on
You can find me on the following platforms:
Get in touch
You can reach me anytime at toncimarinac@gmail.com