Brazilian engineer with almost 20 years in software and 9+ years with Ruby on Rails. Working remotely with US teams since 2021.
I like reliable systems: clear code, good tests, and production changes with a plan to go back.
Ledgerly: an open-source invoicing app in Rails 8 for freelancers and small agencies. Installments, payments, refunds, and every cent in an immutable double-entry ledger.
- Money in integer cents, splits that never lose a cent
- ADRs for every important decision, issues with a clear Definition of Done
- 100% branch coverage, CodeQL, AI code review (CodeRabbit)
- Continuous deploy with Kamal
- General Assembly: built an API from scratch in TypeScript on AWS, made reliable with queues, retries and dead-letter queues. Led many production migrations in 2026 (Heroku stack upgrades, Cloudflare WAF, S3 behind a CDN, CI), always with a rollback plan.
- InDebted (fintech): Go on a large event-driven platform. Led PhoneScrub, a compliance feature (TCPA) on 11M+ customer accounts.
Backend: Ruby, Ruby on Rails, TypeScript, Go · Sidekiq · REST APIs · event-driven systems Data: PostgreSQL, Redis, DynamoDB Cloud: AWS (Lambda, SQS, SNS, S3, Aurora, CloudWatch), Cloudflare, Heroku, Kamal Frontend: React, JavaScript, Hotwire (learning in Ledgerly) Testing: RSpec, Minitest, Jest, TDD AI: daily agentic workflows with Claude Code: spec first, then plan, then tests. I review and test everything the AI writes.
📫 LinkedIn · Open to Senior Rails / backend roles (remote).