Built v2 APIs for Connect KYC data acquisition with Ruby and MongoDB, supporting 2^65 configurations and replacing legacy APIs with 1000+ QPS and XXM total users
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Developed event-driven system to maintain consistency across MongoDB databases (3.6 & 4.4) while minimizing API latency impact
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Architected v1/v2 interop system, ensuring backward compatibility for v1 systems, error detection, and recovery