Sandip Tathagata Ghosh

S

Director of Engineering at Redfern Networks | ex-Airtel

Redfern Networks
Kolkata, India · IST (UTC+5:30)
14+ years experience
IIT Guwahati
English, Hindi, Bengali
Hiring
Messaging unavailable

Overview

I've spent 22 years on mobile apps - first at Wipro, now at Redfern Networks. Shipped 14 launches on the Android team without a rollback. Cut cold-start time on low-end Android phones by 47%. Before that: Airtel and Zerodha. I read too many books about cities.

Good reasons to reach out
  • Candidates for the role I'm hiring for
  • Thoughtful intros to people in my field
  • Working sessions on Kotlin
  • Questions about mobile apps
Please don't message about
  • Recruiters for roles outside my stack
  • Generic networking requests
  • Offshore staffing offers

Replies between meetings, usually same day

Skills
GradleMVVMKotlinAndroid performance
HiringHiring for a role
closes in 3 months

Looking for a security engineer who has worked on Kotlin at scale

Role
Security engineer
Level
Senior
Type
Full-time
Work mode
Hybrid
Compensation
₹36-60 LPA
Team
Android, 11 people
Start
As soon as possible
Must have
Production experience with Gradle Production experience with Android performance Ownership of something end to end
Process
Decision within 10 days

Comp ₹25-87 LPA. One technical chat and a paid trial day. Message me with one thing you shipped that you're proud of.

Kolkata, Indiagradleandroid performancemvvm
Open

Experience

  1. Director of Engineering
    Oct 2025 - Present
    Redfern Networks · 1 yr · Full-time · Kolkata, India
    • Built the experimentation framework 33 product teams use to ship changes safely.
    • Reduced cloud spend on Android by 36% in two quarters.
  2. Principal Engineer
    May 2022 - Oct 2025
    Airtel · 3 yr 5 mo · Full-time · Kolkata, India
    • Sit on 5 boards.
  3. Android Engineer
    Nov 2019 - May 2022
    Zerodha · 2 yr 6 mo · Full-time · Kolkata, India
    • Reduced cloud spend on Android by 28% in two quarters.
  4. Staff Android Engineer
    May 2016 - Nov 2019
    Morgan Stanley · 3 yr 6 mo · Full-time · Kolkata, India
    • Brought on-call pages for Android down from 36 a week to 1.
    • Built the experimentation framework 19 product teams use to ship changes safely.
  5. Senior Android Engineer
    Oct 2012 - May 2016
    Wipro · 3 yr 7 mo · Full-time · Kolkata, India
    • Wrote the Kotlin service that now handles 3 million requests a day.
    • Brought on-call pages for Android down from 29 a week to 4.

References

No references yet.

Education

  1. IIT Guwahati
    B.Tech, Computer Engineering
    1999 - 2003

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