Looking for a job

Gielez Goulart

@gielezgoulart

Message

I build reliable, scalable backend systems for security and financial services.

Brazil

Message

What I'm looking for

I'm open to remote opportunities where I can build reliable, scalable backend systems, solve distributed-systems challenges, and collaborate with international teams.

I've built scalable backend services for Clutch and Serasa Experian, supporting core product features, secure client integrations, and high-traffic applications serving millions of users across Brazil.

At Clutch, I designed Node.js and TypeScript services, implemented Auth0 and OAuth2 authentication flows, integrated third-party APIs, and established Datadog observability for critical production services.

At Serasa Experian, I operated queue-based systems with retries, idempotency, rate limiting, and circuit breakers, shipped a Go service for user-data access, and supported production systems through on-call rotations.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Clutch

Jan 2022 - Feb 2026 (4 years 1 month)

Designed and implemented scalable backend services using Node.js/TypeScript and AWS, supporting core product features in a fast-paced startup environment. Built secure authentication and authorization flows with Auth0 and OAuth2, and set up end-to-end observability with Datadog.

NodeJS TypeScript AWS OAuth Auth0 Datadog PostgreSQL DynamoDB Observability Incident Response

Senior Software Engineer

Serasa Experian

Jan 2019 - Dec 2022 (3 years 11 months)

Developed and maintained backend services and APIs in Python for high-traffic web applications serving millions of users across Brazil. Built queue-based services with retry logic, idempotency, rate limiting, and circuit breakers, and shipped a Go service to production.

Python Go AWS PostgreSQL DynamoDB Datadog Queue Based Processing Retry Logic Idempotency Rate limiting Circuit Breakers Incident Response

Software Developer

Lincros

Jan 2018 - Dec 2019 (1 year 11 months)

Built and maintained web applications and backend services in Java, supporting business-critical workflows. Implemented API integrations and data processing pipelines, contributing to system performance improvements.

Java API Integration Data Processing Web Applications