Q&A—How Wealthsimple Builds API Financial Solutions with Confluent

Wealthsimple uses Confluent’s managed Apache Kafka service to centralize transaction data from its microservices into a real-time general ledger, supporting investment, trading, cryptocurrency, and banking products. Its Book of Record team ingests transaction events from multiple services through Kafka topics, enabling downstream systems to reconcile balances and synchronize customer-facing and back-end processes. The company selected Confluent over self-managed Kafka to avoid cluster-management overhead and allow engineering teams to focus on financial product development, while Schema Registry provides evolving API contracts and standardized data quality. Replacing polling with event streaming increased one key service’s capacity from 2,000 to more than 18,000 order fills per minute, and Confluent has also provided scalable topics, replayable data, and managed support. Wealthsimple plans to migrate further Amazon SQS workloads, develop real-time fraud analytics, and expand organization-wide use of streaming data for the general ledger, while emphasizing training and data-governance practices for effective schema management.

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