Antonio – Typescript, Node.js, React

It is a software studio building custom products and internal tooling for funded startups and growing companies, and maintains the open-source JMS content management system. I work across the full stack, from backend architecture to client-facing features.

• Built end-to-end product features across real-time backend and frontend systems.
• Shipped B2B SaaS MVPs, a healthcare platform (GlycanAge), a BNPL payments system (PayWithFour), and AI document-extraction tools.
• Built a TensorFlow bidding optimizer inside the Beeswax real-time bidding pipeline that saved over $100,000 in three months from a single deployment.

It is an AI driven SaaS for behavioral analytics and conversion optimization. I built the product and the engineering team around it from the ground up, architecting the backend and leading development of its core recommendation engine.

• Built a MongoDB and Firestore to SQL converter that moved hot data onto cheaper analytical stores, and designed schemas across MongoDB and PostgreSQL.
• Built HotLeads, a real-time engine on Node.js and TypeScript microservices across Firebase Functions, BigQuery, and S3 that read user behavior live and recommended the next best action.
• Led development of a secure, HIPAA-compliant analytics toolkit for healthcare companies.
• Steered the team to drive innovation, streamline processes, and realize the company vision.

It is a full-service custom software development company in Osijek working with clients across pharma, finance, industrial, and logistics sectors. As a summer intern, I worked on a live client project under senior developer guidance.

• Built and tested features for a .NET based business application as part of a senior-led development team.
• Learned professional software development workflows, including version control, code review, and sprint planning, in an agency setting.
• Contributed to internal documentation to help keep the codebase consistent and maintainable.

A Croatian ecommerce agency specializing in Magento development for international clients. During this one-month internship, I got hands-on exposure to PHP based ecommerce development on a live production codebase.

• Fixed bugs and implemented small features in Magento based ecommerce stores under senior developer supervision.
• Learned Magento's module and theme architecture through direct work on client projects.
• Gained early exposure to ecommerce specific concerns like catalog management and checkout flow.