Kalpana Babu

S

Senior Backend Engineer at Razorpay · Payments infrastructure · PostgreSQL, idempotency

Razorpay
Hyderabad, India · IST (UTC+5:30)
9+ years experience
IIM Ahmedabad
English, Hindi, Telugu
Collaborating
Messaging unavailable

Overview

I work on payments infrastructure at Razorpay in Hyderabad. Took payment success rates from 91.7% to 96.6%. Before that: Ola and KPMG. Bird-watcher and amateur naturalist.

Good reasons to reach out
  • Collaborators for my side project
  • Working sessions on Java
  • Thoughtful intros to people in my field
  • Questions about payments infrastructure
Please don't message about
  • Unpaid work or spec projects
  • Recruiters for roles outside my stack

Usually replies within a day

Skills
SnowflakegRPCidempotencyGoJavaPostgreSQLKafka
CollaboratingLooking to collaborate
closes in 3 months

Building a free course on idempotency for students - need co-instructors

Project
A free course on idempotency for students - need co-instructors
Skills needed
Backend, Go
Time commitment
A few hours a week
Outcome
Small product with real users

Will credit everyone who contributes. Some groundwork already done.

Hyderabad, Indiajavapostgresqlkafka
Open

Experience

  1. Senior Backend Engineer
    Apr 2025 - Present
    Razorpay · 1 yr 6 mo · Full-time · Hyderabad, India
    • Reduced cloud spend on payments platform by 24% in two quarters.
    • Shipped 6 launches on the payments platform team without a rollback.
    • Grew the payments platform team from 6 to 20 engineers.
  2. Backend Engineer
    Aug 2021 - Apr 2025
    Ola · 3 yr 8 mo · Contract · Hyderabad, India
    • Cut p99 latency on the payments platform services from 319ms to 117ms.
  3. Backend Engineer
    Apr 2018 - Aug 2021
    KPMG · 3 yr 4 mo · Full-time · Hyderabad, India
    • Shipped a rewrite that took build times from 43 minutes to under 3.
    • Reduced cloud spend on payments platform by 40% in two quarters.

Projects

Write-up: payments infrastructure in practice
2023

A long-form guide to payments infrastructure for people starting out.

References

No references yet.

Education

  1. IIM Ahmedabad
    MBA, Business Administration
    2017 - 2019
  2. St. Xavier's College, Mumbai
    B.A., Computer Engineering
    2013 - 2017

Details

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What they are targeting for their next role.
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