I am an end-to-end product engineer building backend systems, desktop applications, integrations, and operator-facing software from architecture through production delivery. I specialize in systems that must operate reliably under real-world constraints including device coordination, offline-safe behavior, sync and recovery flows, and touch-first runtime environments. I enjoy solving distributed systems challenges and collaborating with cross-functional teams to ship robust, user-focused software. My work spans RESTful APIs, real-time messaging, and multi-channel notifications, with a track record of delivering features from idea to production.

Antonio Kadić

I am an end-to-end product engineer building backend systems, desktop applications, integrations, and operator-facing software from architecture through production delivery. I specialize in systems that must operate reliably under real-world constraints including device coordination, offline-safe behavior, sync and recovery flows, and touch-first runtime environments. I enjoy solving distributed systems challenges and collaborating with cross-functional teams to ship robust, user-focused software. My work spans RESTful APIs, real-time messaging, and multi-channel notifications, with a track record of delivering features from idea to production.

Available to hire

I am an end-to-end product engineer building backend systems, desktop applications, integrations, and operator-facing software from architecture through production delivery. I specialize in systems that must operate reliably under real-world constraints including device coordination, offline-safe behavior, sync and recovery flows, and touch-first runtime environments.

I enjoy solving distributed systems challenges and collaborating with cross-functional teams to ship robust, user-focused software. My work spans RESTful APIs, real-time messaging, and multi-channel notifications, with a track record of delivering features from idea to production.

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Experience Level

Expert
Expert
Expert
Expert
Expert

Language

Croatian
Fluent
English
Fluent

Work Experience

Software Engineer at Stratus IT d.o.o.
September 1, 2021 - June 30, 2025
Built production features and internal tools for a yacht charter booking and back-office management platform, including mobile-first booking and trip workflows. Delivered REST services, external integrations, real-time chat, and multi-channel notifications across Firebase Cloud Messaging, Firestore, MQTT, and email while working with clients, support, and product stakeholders.
Product Engineer at Stratus IT d.o.o.
July 1, 2025 - Present
End-to-end product engineering building backend systems, desktop applications, integrations, and operator-facing software from architecture through production delivery, specializing in systems that must operate reliably under real-world constraints including device coordination, offline-safe behavior, sync and recovery flows, and touch-first runtime environments. Implemented offline sync, secured device bootstrap, and real-time coordination across a LAN-connected register cluster using REST, MQTT, and PostgreSQL.

Education

Computer Technician at Ruđer Bošković Technical School
September 1, 2009 - May 1, 2013

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Computers & Electronics, Professional Services, Media & Entertainment, Other