Senior Software Engineer with 7+ years building scalable backend systems and 10+ years in the IT industry. Specialized in Ruby on Rails, distributed systems, and API performance.
Currently at Nubank, working on event-driven financial services. Based in Brazil · UTC-3
- Optimized Rails API endpoints from 800ms–1s down to <150ms through query tuning and async processing
- Led the RSpec test suite implementation from scratch in a legacy Rails codebase
- Solved a memory crisis in a reporting pipeline processing 1M+ rows, redesigning it with batching and streaming
- Upgraded a production Ruby on Rails application from 4.2 to 5.x, modernizing its foundation
Languages — Ruby, Java, SQL, Clojure Web — Ruby on Rails, Sinatra Data — PostgreSQL, Redis, DynamoDB, MongoDB, Datomic Infrastructure — AWS, Docker, Sidekiq, Kafka, RabbitMQ Practices — TDD, REST APIs, event-driven architecture
Updates coming to this profile and to my blog soon.
- LinkedIn — linkedin.com/in/araujopr
- Email — araujo.pauloricardo@gmail.com