Looking for a job

Thyago Rodrigues dos Santos

@thyagorodriguesdossa

Message

Backend Developer at Melhor Envio who cut freight endpoint latency by 92% across 4M+ weekly requests.

Brazil

Message

At Melhor Envio, I refactored the commission calculation and payment split engine into Hexagonal Architecture, preventing R$218K+ in undue payouts across 38K+ shipments.

I also optimized a freight integration endpoint serving 4M+ weekly requests, reducing response time from about 750ms to 60ms through query indexing and multi-table join decomposition.

At Melhor Envio, I architected serverless freight-table generation pipelines with AWS Lambda, SQS, and Redis. I also led zero-downtime rollouts and authored Architecture Decision Records for state machines and dual-write migrations.

Previously, I engineered a fleet-management platform backend at GAV and modernized legacy ERP systems at GIR - Gestão, Informação e Resultados Ltda. and NTL Nova Tecnologia Ltda., using PHP and Laravel.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

Melhor Envio

Mar 2022 - Present (4 years 7 months)

- Refactored the legacy commission calculation and payment split engine into Hexagonal Architecture (Ports & Adapters), correcting flawed invariants to prevent R$218K+ in undue payouts across 38K+ shipments.
- Optimized a critical high-traffic freight integration endpoint serving 4M+ weekly requests, cutting response time from ~750ms to ~60ms (92% latency reduction) via heavy multi-table join deco

Full Stack Developer

GAV

Aug 2021 - Mar 2022 (7 months)

- Engineered the core fleet-management platform backend with PHP/Laravel using Hexagonal Architecture, integrated with a React/Next.js frontend.
- Designed and implemented an asynchronous billing engine over AWS SQS integrated with the Iugu API, processing recurring invoices (rentals, fees) without blocking primary user requests.
- Integrated Algolia for high-performance catalog search and the Mer

Full Stack Developer

GIR - Gestão, Informação e Resultados Ltda.

Nov 2020 - Aug 2021 (9 months)

- Led the rewrite and modernization of a legacy .NET/VB real-estate ERP (SIGIM) into a scalable PHP/Laravel ecosystem, drastically improving maintainability.
- Engineered robust SQL Server data migrations, seeders, and stored procedures to ensure zero data loss and absolute integrity during the legacy transition.
- Containerized the development and staging environments using Docker and Laravel Sai

Full Stack Developer

NTL Nova Tecnologia Ltda.

Aug 2019 - Nov 2020 (1 year 3 months)

- Contributed to the modernization of legacy proprietary ERP systems, migrating core modules to Laravel to enhance system efficiency and structural architecture.
- Executed full-lifecycle development under Waterfall methodology, bridging the gap between requirements gathering, technical specifications, and final homologation.
- Developed new RESTful features for core products, ensuring strict alig