Ellian O
Software Developer Engineer II at Amazon
São Paulo, Brazil
Summary
👤
Senior🎓
Top SchoolEllian O is a results-driven Software Development Engineer II with 8 years of experience building event-driven, cloud-native systems that operate at scale across Latin America. At Amazon he designs CQRS and event-sourced architectures processing 100M+ events/month and led an observability strategy that uncovered an anomaly preventing a R$5M loss. Previously at CI&T he architected microservices and serverless solutions handling millions of daily requests, introduced saga patterns and reduced operational risk through knowledge-sharing and onboarding initiatives. He combines a strong theoretical foundation from USP with hands-on expertise in DynamoDB, Neptune graph modeling, TypeScript, and scalable frontends, having improved GraphQL latencies by 80% in past roles. Known for pragmatic, frugal engineering—such as an account-orchestration tool that saved R$1M—and a passion for mentoring, he makes complex compliance and customer-facing systems both reliable and operable. Based in São Paulo, he blends robotics-rooted problem-solving with production-grade software craftsmanship.
8 years of coding experience
7 years of employment as a software developer
Bacharelado, Sistemas de Informação, Bacharelado, Sistemas de Informação at USP - Universidade de São PauloTécnico, Mecatrônica, Robótica e Engenharia de Controle e Automação, Técnico, Mecatrônica, Robótica e Engenharia de Controle e Automação at IFRJ - Instituto Federal do Rio de Janeiro
English, Portuguese, Spanish, Japanese, English
Stackoverflow
26reputation
1kreached
4answers
0questions
Github Skills (55)
storage8
expressjs7
javascript7
aws-s37
aws7
dynamodb7
react7
npm-publish6
microservices6
backend6
nodejs6
aws-amplify6
ria6
omnistack6
github6
Programming languages (6)
Github contributions (5)
EllianCarlos/calendar-desafio
Feb 2020 - Sep 2021
Contributions:14 PRs, 23 pushes, 3 branches in 1 year 7 months
EllianCarlos/.dotfiles
Feb 2021 - Oct 2022
Contributions:8 commits, 8 pushes, 1 branch in 1 year 9 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.