Giovanni Junior

Available to hire

I am a Senior Software Engineer with 8 years of experience across e-commerce, healthcare, fintech and AI domains.

About

I am a Senior Software Engineer with 8 years of experience across e-commerce, healthcare, fintech and AI domains.

I specialize in React, React Native and Node.js, with strong Python and Java skills and extensive cloud experience, building scalable microservices, real-time systems, and data-driven applications.

  • 1 year's experience
  • Joined October 2025

Industry experience

  • Software & Internet
  • Financial Services
  • Healthcare
  • Retail
  • Transportation & Logistics
  • Professional Services

Work experience· 4 roles

Senior Software Engineer · FanaticsJan 2024 – Oct 2025 · 1 yr 10 mos

Engineered the Real-Time Commerce Engine in Java powering post-championship and player-trade merchandise drops. Designed event-driven microservices (Node.js, Python, Kafka) to sync player data from league API, reducing update latency by 80%. Built inventory synchronization linking manufacturing with e-commerce pipelines, improving fulfillment accuracy by 25%. Developed and integrated Loyalty APIs connecting Fanatics.com, Topps, and Fanatics Sportsbook, increasing cross-platform engagement by 30%. Partnered with league tech teams to launch live event APIs, enabled on-site mobile ordering. Integrated Snowflake Data Lake for global fan profiles, leveraging SageMaker ML models to personalize team-based recommendations, raising user retention by 15%.

Senior Software Engineer · ParklandNov 2023 – Nov 2023 · 1 mo

Architected a React/Node.js platform supporting mobility needs (refueling, EV charging, and retail). Enabled real-time EV charge point access and management across regions. Implemented a mobile app feature for fleet management to track fuel consumption (React Native), saving logistics costs by 18%. Built API-driven authentication and payment system for B2B clients, reducing transaction friction by 40%. Designed Python-based microservices for AI inference and healthcare automation, improving data processing efficiency by 45% while maintaining HIPAA compliance. Contributed to AWS cloud migration, enhancing reliability and scalability. Scoped requirements using Agile/Scrum, reducing ad hoc requests by 16%.

Full Stack Engineer · PrizeCartDec 2020 – Dec 2020 · 1 mo

Developed Next.js front-end pages for merchant widgets and prize portals, boosting conversion rates by 22%. Implemented serverless Node.js APIs to manage prize generation, redemption logic, and click-based billing using AWS Lambda and MongoDB. Integrated Shopify APIs for installation, merchant authentication, and order data sync. Collaborated with design teams to enhance 'Reveal Prize' flow, improving retention by 35%. Deployed production builds with CI/CD on AWS and implemented observability via CloudWatch and Sentry.

Software Engineer · DatametricaMar 2019 – Mar 2019 · 1 mo

Education

Bachelor of Computer Science (BCS) · University of São Paulo2013 – 2017

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