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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.…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

Web Developer, Full Stack Developer, Back-End Developer, +2

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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.…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.

Skills

Experience Level

Expert

Expert

Expert

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.