APIs & Integration
REST and event-driven APIs other systems can build on — versioned contracts, webhooks, third-party integrations, and a developer experience that does not need a support ticket.
Most of the platforms I've built are really integration problems: a background-verification SaaS wiring in PAN, Aadhaar, CIBIL and eCourt sources; a multi-vendor API platform for financial institutions with three services behind a shared schema; marketplaces stitched to payment and logistics providers.
The API is a product with its own users. That means a versioned contract that doesn't break them, documentation that answers the obvious questions, webhooks and idempotency for the async parts, and a gateway doing auth and rate limiting so the services behind it stay simple.
REST & event-driven API design
Versioned contracts & documentation
Webhooks & async messaging
Third-party integrations (payments, identity, logistics)
API gateways
Developer experience
Tools & technologies
Related work

API Service Platform
A multi-vendor identity, KYC and financial-verification platform for Indian financial institutions — three APIs behind a shared schema, architected, built, tested and deployed end to end as a single full-stack developer.
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