Cassio L. Freires Souza

Ancar Ivanhoe Shopping Centers · Rio de Janeiro, Brazil

• Corporate NPS platform (in-house, multitenant): architected and led the end-to-end development of the proprietary platform that replaced a costly market tool, generating significant savings for the organization.
• Designed it under Clean Architecture, DDD and SDD with NestJS, TypeScript, PostgreSQL and Redis, supporting multiple shopping centers and concurrent access.
• Implemented concurrency, atomicity, idempotency, retry policies and Redis caching to guarantee consistency and performance.
• Provisioned scalable infrastructure on Google Cloud Platform (Cloud Tasks, Load Balancers) with Terraform (IaC).
• AFA tax ecosystem: designed the architecture that automates tax-obligation filing (REINF, EFD, ECF), removing manual entries at the Federal Revenue portal — SOAP API with the JD Edwards ERP, a NestJS REST API and a React admin panel, with pub/sub messaging.
• Set up CI/CD pipelines (GitHub Actions + Docker) and lead code reviews, technical mentoring and best-practice adoption.

Ancar Ivanhoe Shopping Centers · Rio de Janeiro, Brazil

• Maintained and evolved integrations between ERPs (Oracle Cloud, JD Edwards) and CRM (Salesforce) supporting the financial operations of multiple properties.
• Automated operational flows and billing routines, reducing manual work and improving business teams' response time.
• Optimized complex SQL queries and stored procedures, increasing billing-processing performance.
• Handled high-priority incidents with strict SLA compliance.
• Promoted to Software Developer for results in automation and in-house engineering.