Rajat Puri

I've built backend systems at FortyTwoLabs and HSBC Technologies India, from configurable caching frameworks to role-based entitlement platforms for mission-critical clients.

At FortyTwoLabs, I own the design and implementation of a provider-agnostic cache abstraction framework that switches between Redis and Hazelcast through configuration. I also built a configurable lockout policy engine for authentication systems handling 10K–50K daily login attempts.

At HSBC, I contributed to dynamic permissions and account syncing, and helped reduce company onboarding from three days to five minutes using MongoDB aggregation pipelines. I also migrated a critical permission-syncing workflow from COBOL to Java.

I work across Java, Spring Boot, REST APIs, MongoDB, testing, deployments, and production observability. Earlier, I developed a DRDO-endorsed facial-recognition proof of concept that was later published in IEEE.