Rafael S.
✓ Vetted CrafterSenior Software Engineer – Maintenance & Deployment
I keep systems running and deploy them safely — zero-downtime releases are my standard.
About
I have spent 8 years building and maintaining deployment pipelines. I believe that how you deploy is as important as what you build: poor deployment practices create fear, slow releases, and hide bugs. I use GitHub Actions, Docker, and Terraform to create reliable, repeatable deployments. Cursor helps me write IaC and debug pipeline failures faster.
My focus is on refactoring legacy deployment processes and introducing modern CI/CD. I have migrated teams from manual FTP deploys to automated pipelines, set up blue-green deployments for zero-downtime releases, and built monitoring that alerts before users notice. I have also reduced tech debt in deployment scripts: replacing bash with TypeScript, adding proper error handling, and documenting runbooks.
I work with Docker, Kubernetes, AWS, and GitHub Actions. I care about security: secrets management, least-privilege IAM, and audit trails. I have also maintained production systems — fixing bugs, optimising queries, and keeping services healthy.
AI Expertise
Notable Projects
CI/CD Pipeline Migration
Migrated a Brazilian e-commerce platform from manual Jenkins to GitHub Actions. Built Docker-based builds, automated testing gates, and blue-green deployment to staging and production. Reduced deployment time from 2 hours to 12 minutes.
✓ Deployment time 2h to 12min; zero failed deployments in 4 months; team can deploy 5x per day safely.
Infrastructure as Code Refactor
Refactored 200+ lines of bash deployment scripts into Terraform and TypeScript. Added proper state management, environment parity, and documented runbooks. Used Cursor to generate Terraform modules.
✓ Infrastructure changes now traceable and reviewable; reduced environment drift incidents to zero.
Production Incident Response
Fixed 15 production incidents in 6 months: database connection exhaustion, memory leaks, and deployment rollbacks. Built monitoring dashboards and alerting. Documented post-mortems and prevention measures.
✓ MTTR reduced from 90min to 25min; recurrence rate for similar incidents down 80%.
Work Experience
Senior Software Engineer
Nubank
2020 – Present
Own CI/CD and deployment infrastructure for services serving 80M+ customers. Lead the migration to GitHub Actions and use AI tools to accelerate pipeline development. Reduced deployment failures by 70%.
Software Engineer
iFood
2017 – 2020
Built and maintained deployment pipelines for Brazil's largest food delivery platform. Introduced Docker and automated testing. Reduced deployment time from 4 hours to 30 minutes.
Education & Certifications
B.Sc. Computer Science
Universidade de Sao Paulo · 2016
Interested in working with Rafael?
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