Sub-Second Transaction Monitoring Pipeline Processing 10M Events Daily for a Payment Processor
A payment processor needed real-time monitoring of 10M daily transactions for fraud patterns and regulatory reporting. We built a streaming pipeline with Kafka, Event Hubs, and Databricks — delivering sub-second alerts.
About the Client
The Challenge
A payment processor needed real-time monitoring of 10M daily transactions for fraud patterns and regulatory reporting. We built a streaming pipeline with Kafka, Event Hubs, and Databricks — delivering sub-second alerts. The organization faced mounting pressure from leadership to modernize. Existing systems and processes had reached their limits — manual workarounds consumed staff time, data quality was unreliable, and decision-makers lacked the visibility they needed.
The banking industry added specific complexity: regulatory requirements (SOX, PCI-DSS, GLBA, Basel III) demanded auditable processes and governance. Any technology change needed to maintain compliance continuity while delivering measurable improvement.
Previous attempts had stalled — either the technology was too complex for the internal team to maintain, the vendor didn't understand banking industry requirements, or the project scope expanded until timelines became unrealistic. This time, the sponsor demanded a phased approach with measurable results within one quarter.
Our Approach
We designed a phased approach optimized for speed-to-value and compliance continuity:
Assessment & Architecture (Weeks 1-2)
Cataloged data sources, mapped dependencies, and designed target data platform architecture with governance requirements.
Ingestion & Pipeline (Weeks 2-5)
Built automated data pipelines with error handling, retry logic, and lineage tracking for all source systems.
Transformation & Quality (Weeks 3-7)
Implemented medallion layers with data quality checks. Domain-specific business logic in Silver and Gold layers.
Analytics & Consumption (Weeks 5-9)
Connected to analytics tools with governed datasets. Built domain-specific dashboards and self-service models.
Governance & Training (Weeks 7-10)
Deployed governance framework with data classification, lineage, and access policies. Trained internal team.
Solution Architecture
Platform: Lakehouse architecture with medallion layers and governance framework
Ingestion: Automated pipelines with lineage tracking and quality validation
Consumption: Power BI semantic models with row-level security and certified datasets
Results
Technologies Used
Key Takeaways
If your organization is facing a similar challenge, here's what we learned:
Phased delivery de-risks large projects. By scoping the initial deployment for 8-12 week delivery, we proved value before the executive sponsor's next quarterly review. This maintained budget authority and organizational support for subsequent phases.
Banking domain expertise accelerates every phase. Understanding banking terminology, regulations, and workflows eliminated weeks of discovery that generalist consultants require. Our data engineering team brought industry context from day one.
Change management is half the project. Technology implementations fail when users don't adopt. We embedded change management into every phase — from requirements workshops to training to post-go-live support. Adoption reached 80%+ within the first month.
Ongoing governance prevents regression. We established monthly review cadences, defined ownership for data quality and process adherence, and built dashboards that make issues visible before they become problems. The platform continues to deliver value because governance is sustained.
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We deliver data engineering solutions for banking organizations — typically within 8-12 weeks with measurable outcomes.