Global Financial Services

gravity9 partnered with a global financial services organization to modernize its fragmented, legacy data landscape and support a shift toward a resilient, scalable cell-based architecture. The team designed and delivered a fully functioning event-driven Event Sink built on MongoDB Atlas, Kafka, and AWS EKS. Working within strict access constraints and a shared AWS environment, gravity9 engineered a lightweight but powerful platform comprising an event generator, Kafka Streams processor, and an Event API, all deployed through automated Terraform and Helm pipelines. Full observability was implemented using the OpenTelemetry stack, Prometheus, Loki, Tempo, and Grafana, enabling real-time visibility across ingestion, transformation, and persistence stages.

The Proof of Concept validated that MongoDB Atlas could reliably serve as the Event Sink for large-scale, event-driven workloads within the client’s emerging architecture. The system met all performance benchmarks, including sustained throughput of 1,500 events per second, stable autoscaling, reliable failure recovery, and real-time event processing. With more than 600,000 documents processed at consistent latency, the PoC demonstrated the architecture’s resilience and scalability. This success has unlocked the next phase an MVP focused on production deployment and extending the event-sink model to additional use cases across the client’s digital ecosystem.