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I'm
Senior Software Engineer specializing in scalable backend architectures, high-performance APIs, and robust modern web applications with Node.js, NestJS, React, and TypeScript.
Hello, welcome! 👋
Senior Software Engineer specializing in scalable backend architectures, high-performance APIs, and robust modern web applications with Node.js, NestJS, React, and TypeScript.
Developing robust digital products, high-throughput systems, and mission-critical web solutions since 2008.
Specialist in Node.js, NestJS, scalable APIs, microservices, message brokers, and distributed data processing.
Systems Analysis & Development (UNICID) and Systems Development technician at the Federal Institute of São Paulo (IFSP).
My name is Julio Antonini, I'm a software engineer based in Brazil. I specialize in backend development and modern full-stack architectures, passionate about solving complex problems, performance optimization, soccer, and traveling.
In 2008, I had the opportunity to build my first website, a local business directory developed in PHP and jQuery. Back then, table-based layouts were standard, and responsive design as we know it was just beginning.
Since then, I have continuously honed my engineering capabilities. In 2009, I completed my technical degree at the Federal Institute of São Paulo, and in 2021, I graduated in Systems Analysis and Development from UNICID.
Throughout my journey, I've engineered systems across commercial energy monitoring (ingesting over 20M daily data points), automated invoice ingestion pipelines, real estate CRMs, AI exam platforms, auction platforms, and mobile apps.
Explore a selection of systems, web applications, and digital products I have architected and built throughout my career.
Commercial energy monitoring system capable of daily acquiring over 20 million measurement points from diverse telemetry sources (REST, GraphQL, SOAP, Modbus, BACnet). Delivers actionable insights, freezer temperature anomaly detection, and energy efficiency analytics for large enterprise clients like Walmart.
High-throughput utility account processing platform handling over 70,000 electric invoices monthly. Automatically captures bills via email, FTP, and utility portals, extracts normalized structured data across hundreds of layout templates, and exposes analytics APIs for commercial clients.
Interactive learning app for students preparing for the Brazilian National High School Exam. Features AI-powered step-by-step question resolutions, adaptive practice sessions, performance analytics per subject area, and competitive national rankings.
SaaS CRM for the real estate sector managing property launches, construction firms, lead pipelines, sales workflows, and team performance goals. Includes real-time lead dispatch and broker push notifications.
Scheduling and attendance verification system for Health Declarations. Provides time slot allocation for brokers, appointment tracking, and real-time validation via mobile apps and web administrative dashboards.
Real estate development portal offering property mapping, interactive geolocation search, advanced filtering, and SEO optimization with custom slug generation for each development.
Mobile application for international exchange students. Features secure document upload, payment receipt dispatch, direct agency messaging, visa progress tracking, and integration with the agency CRM.
Promotional campaign and loyalty management platform integrated with point-of-sale systems via webhooks, automatically generating verifiable draw numbers and instant prize validation.
Have a project in mind, an opportunity to discuss, or just want to say hello? Feel free to reach out via the form or direct channels below.
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