Case Study · Platform Engineering

Multi-Tenant Fintech Transaction API Engine

Architected a high-concurrency transaction engine with PostgreSQL row-level security and automated audit logging.

The Engineering Challenge

A B2B payment processor needed an ultra-fast RESTful API capability to support multi-tenant partner integrations while meeting strict security standards.

Our Architectural Solution

Engineered an API gateway with JWT authorization, PostgreSQL row-level security policies, OpenAPI documentation, and automated database migration pipelines.

Measurable Production Results

Processes over 2.5 million monthly API transactions with sub-50ms query responses.

Passed independent security penetration audits with zero high-severity findings.

Supported 14 new enterprise client integrations without codebase refactoring.

Technologies & Frameworks

Node.jsTypeScriptPostgreSQLDockerREST APIJWT

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