Lead Technical Engineer building cloud architecture, backend services, and the mobile apps behind healthcare platforms. I work across backend, frontend, mobile, and DevOps — and gravitate to the messy parts: migrations, integrations, and keeping production reliable.https://rajeshpandey.dev/enhttps://rajeshpandey.dev/blog/zero-downtime-billing-migrations/https://rajeshpandey.dev/blog/zero-downtime-billing-migrations/Patterns for moving active subscriptions between billing systems with zero downtime — backfills, order linking, idempotency, and the cutover itself.Thu, 09 Jul 2026 00:00:00 GMTpaymentsmigrationsbackendhealthcarerajesh-pandey@outlook.inhttps://rajeshpandey.dev/blog/building-and-selling-a-telehealth-startup/https://rajeshpandey.dev/blog/building-and-selling-a-telehealth-startup/Medsi went from zero to 250,000+ downloads and an acquisition. The engineering lessons had very little to do with code.Sun, 05 Jul 2026 00:00:00 GMThealthcarestartupsengineering-leadershiprajesh-pandey@outlook.in