Senior Software Engineer DQR Tech | Allocated at BTG Pactual – IT Credit
Designed and implemented a high-performance credit-operations retrieval pipeline using .NET, C#, AWS DynamoDB, Lambda, Aurora, and CloudWatch. Optimized DynamoDB indexing and partitioning, replacing costly scans with indexed queries and moving filtering from FilterExpression to KeyExpression, reducing RCU costs and processing time by 40–60x across large credit portfolios.
Refactored a legacy message-forwarding flow and created an independent batch-processing service that decoupled workloads from a core message orchestrator processing more than 80 million messages per day. Implemented asynchronous batch delivery with SNS, Lambda, DynamoDB Streams, and parallelism to reduce RateExceeded errors and improve resilience.
Built an asynchronous wallet-closing scheduling feature using EventBridge, Lambda, and DynamoDB. Distributed closing operations across configurable windows, prevented queue and DAX-cluster overloads, and added automated retries for validation failures.