Content-driven websites
CMS architecture and content modeling
Hey, I'm Tonči Marinac
Frontend 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:
Frontend
- 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
VK Lošinj
FreelanceNew website for VK Lošinj built with Next.js and Sanity CMS. Includes news posts, match schedule with results, galleries, multilingual support (HR/EN), and a secure contact form using Resend + React Email with Cloudflare Turnstile.
Next.jsTailwindSanity CMSnext-intlFramer Motion
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
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:
As Next.js projects grow, folder structure becomes critical for maintainability and developer experience. This article explains why organizing code by file type doesn’t scale, and how a feature-based structure leads to cleaner, more predictable Next.js applications.
A practical guide to setting up Sanity CMS with Next.js, covering local development, schema definition, data fetching, secure revalidation with webhooks, and production deployment. Learn how to keep CMS content in sync with a statically generated or server-rendered Next.js app.
Find me on
You can find me on the following platforms:
Get in touch
You can reach me anytime at toncimarinac@gmail.com