Rohan Rahul Mistry

Overview

I work on search and ranking at NatWest in Edinburgh. Wrote the Elasticsearch service that now handles 29 million requests a day. Grew the search team from 5 to 12 engineers. Most at home with Lucene and A/B testing. I mentor first-time managers when I can.

Experience

1. Staff Software Engineer

   Jul 2025 - Present
   NatWest · 1 yr 3 mo · Full-time · Edinburgh, UK
   • Cut p99 latency on the search services from 342ms to 177ms.
   • Built the experimentation framework 36 product teams use to ship changes safely.
   • Reduced cloud spend on search by 30% in two quarters.
2. Engineering Manager

   Mar 2023 - Jul 2025
   Barclays · 2 yr 4 mo · Full-time · Edinburgh, UK
   • Brought on-call pages for search down from 13 a week to 1.
3. Senior Software Engineer

   Sep 2019 - Jan 2023
   Stripe · 3 yr 4 mo · Full-time · Edinburgh, UK
   • Shipped a rewrite that took build times from 14 minutes to under 3.
   • Reduced cloud spend on search by 28% in two quarters.
4. Software Engineer

   Jan 2016 - Sep 2019
   BAE Systems · 3 yr 8 mo · Full-time · Edinburgh, UK
   • Moved 90% of search traffic off a legacy monolith without a customer-facing incident.

No references yet.

Education

1. University of Leeds

   BSc, Mathematics
   2012 - 2015