Hello! I'm Jóni Oliveira

Building and optimizing AI-powered recommendation systems that connect millions of conference attendees through intelligent networking suggestions. Architecting a recommendation engine that processes millions of user interactions to deliver personalized people-to-people connections, company matchmaking, and event recommendations across global conferences.

Working on large-scale distributed systems for operating system infrastructure, focusing on reliability and performance at global scale. Architecting and maintaining distributed systems handling high-volume metadata operations with NoSQL databases, implementing efficient content delivery solutions leveraging CDN infrastructure, and ensuring system reliability across geographically distributed services.

Developed Data Fetcher using Rust and ETL tools using Go. Created CLI tools for Kubernetes cluster health testing. Implemented CI/CD pipelines to deploy to Kubernetes clusters in private cloud infrastructure. Ensured high standards of software quality and followed Scrum methodology.

Developed Backend REST APIs using Java, Spring Boot, JPA and Hibernate. Created Android app using Kotlin that consumes REST API and communicates with mobility cards via Bluetooth. Developed Frontend app with Vue consuming REST APIs and created Java proxy for binary data transmission.

Developed microservices using Scala with Lagom framework to support device registration. Created integrations with Mender API for over-the-air device updates and AWS S3 for image storage. Developed device simulator for testing microservices integration and worked on AWS IoT Platform development and debugging.

Developed Android applications using Java, performed bug fixing and code reviews. Created facial recognition application client with image processing capabilities. Developed finance application for financial exchanges in emerging markets, featuring money transfers and bill payments. Worked in Scrum teams of 10 people.