Tejpal Rebari

About Tejpal Rebari

I’m a Senior Software Engineer at Microsoft, with 7+ years of experience delivering large-scale, high-impact systems across email security, financial risk platforms, and core Java libraries.At Microsoft, I contributed to Microsoft Defender for Office (MDO), building authentication, spoof, and impersonation protection for Outlook emails — including the Pre-Complex Routing system that rescues ~60M emails daily from being quarantined. I also led customer-facing reporting pipelines and Spoof area.Previously, at Morgan Stanley, I developed risk and PnL systems for Interest Rate Derivatives, including an end-to-end Scala application handling 16M+ trade entities.At Oracle, I worked on the Java Platform Group, contributing to OpenJDK (Swing, AWT, JDK Mission Control) and earned OpenJDK Committer status.Tech Skills: C#, Java, Scala, Python, C++, System Design, Distributed Systems, Data Pipelines, Cloud (Azure), Microservice, AI.

Experience

1. Senior Software Engineer

   Microsoft

   Jul 2022 — Present · Bengaluru, IN

   Implemented Pre-Complex Routing in MDO, rescuing 60M+ emails daily from junk/quarantine.Served as SME for spoofing and authentication in MDO, ensuring protection at enterprise scale. Spearheaded the design and implementation of customer-facing reporting pipelines, conducted comprehensive security reviews across critical services (internal Legacy infrastructure), and drove multiple company-wide security initiatives that improved resilience and compliance.

Education

• National Institute of Technology Karnataka

  Bachelor of Technology (BTech), Computer Science and Engineering

  2014 — 2018