KARAN NARULA

Built backend infrastructure and microservices (Ruby, Kafka, Temporal, MongoDB, Protobuf) as well as frontend dashboard experiences (Typescript, React, GraphQL).

New product development

• Led a team of 3 engineers to deliver a suite of beta products, dubbed Preventions, achieving $2M+ ARR in under a year. Currently leading 5 engineers across the US and Singapore to GA Preventions at Stripe Sessions 2025 (annual company conference).
• Designed and drove the implementation of a dispute evidence management service that enabled an experimental automatic evidence submission product, recovering $1.5M+ in dispute volume in its first year.
• Designed an end-to-end testing framework for a new dispute platform gRPC service. Led two junior engineers in the implementation of the testing framework, allowing for live validation between the active and in-progress platforms.

Global expansion

• Developed, documented, and transitioned ownership of the Elavon (Mexico) dispute integration, the first successful integration handoff in our team’s history. Produced a template for all future integration handoffs across the org.
• Helped global payment method teams design, test, and launch Stripe’s BBVA, PagoNxt, and PINless debit dispute integrations.

Financial rigor

• Enabled Stripe to establish financial SOX controls and maintain compliance with those controls by raising internal accounting clearing rates to 99.99% for all financial activity across the four major dispute integrations (Visa, Mastercard, Amex, Discover). Resolved $210M in stuck funds accrued over 3+ years.

• Built ML infrastructure within Meta's content review pipeline to identify incorrectly monetized videos on Facebook ~5x more accurately than random sampling and creating a more brand-safe environment for advertisers

• Migrated Stripe's digital wallets refund pipeline from a batching to event-driven system utilizing Kafka producers and consumer, resulting in a 98% reduction in refund issuing and eliminating user complaints related to refund latency