# Varun Bhadauria

> Staff Software Engineer (PyTorch , AI Infra , WhatsApp Infra , PS5 @ Sony , Samsung Semiconductors)

Location: Lafayette, California, United States
Profile: https://flows.cv/varunbhadauria

I am currently part of Meta’s AI Infra team, focusing on scaling training and inference for recommendation system (RecSys) workloads using LLMs and long user sequences. My work spans optimizing state-of-the-art training and inference stacks built on PyTorch 2, exploring modern GPU architectures, and developing custom kernels in Triton to push the boundaries of performance and efficiency.
Previously, I designed and implemented large-scale schedulers for LLM and RecSys training jobs, orchestrating workloads across 100,000+ GPU clusters.
Earlier in my career, I worked on messaging infrastructure for WhatsApp, where I scaled tier-1 services to support over a billion monthly active users.
My foundational experience includes developing file systems, block I/O kernel drivers, and SSD caching software for enterprise systems. I later transitioned to consumer gaming, contributing to the PlayStation 5 compression engine and building modern game authoring systems leveraging advanced I/O compression and deduplication technologies.

## Work Experience
### Staff Software Engineer @ Meta
Jan 2021 – Present | Menlo Park, CA
Current : AI Infra / PyTorch Team for modernizing recommendation systems at Meta using LLMs , Improving reliability and efficiency of distributed training and inference for RecSys Models using PyTorch2 , GPU / Triton.

Previous : 
- AI Training Infra : Resource management and job scheduler for GenAI , RecSys jobs across 100K GPUs.
- WhatsApp Infra : Scaling services for 2.7B+ MAU at WhatsApp Messaging Infra.

### Senior Staff Software Engineer @ PlayStation
Jan 2016 – Jan 2021 | San Francisco Bay Area
PS5 Platform Architecture and  I/O Stack , Application delta patching,  Machine Learning for I/O compression and deduplication. Patents : 11449325, 11307841

### Staff Software Engineer @ Samsung Semiconductor USA
Jan 2013 – Jan 2016 | San Francisco Bay Area
•	Lead development of  Linux Kernel Block Layer caching software (called Samsung AutoCache for Enterprise Linux)
•	Lead development of Linux Kernel log structured block device for improving write endurance of client SSD/eMMC.
•	Lead development of Flash Aware compression based DRAM caching solution for Android Kernel.

### Senior Software Engineer @ Symantec
Jan 2007 – Jan 2013 | Mountainview CA
Lead for Veritas Cluster Filesystem (VxFS) Development & Escalations. Developed OpenStack Cinder driver for VxFS.

### Co-Founder @ KodeAssets
Jan 2005 – Jan 2006 | New Delhi Area, India
Startup for measuring and rating "code quality" of a software.

### Research Programmer @ The Australian Software Company Pty Ltd, Sydney ,AU
Jan 2005 – Jan 2005 | Sydney, Australia
DestroyX and ViewX for Linux.

### Programmer @ SISSA Trieste Italy
Jan 2005 – Jan 2005 | Trieste Area, Italy
Developed image processing system in MATLAB for cognitive science research.


## Education
### Bachelor of Technology (B.Tech.) in Computer Science and Engineering
Indian Institute of Technology, Delhi

### Executive Product Management
University of California, Berkeley, Haas School of Business


## Contact & Social
- LinkedIn: https://linkedin.com/in/varunbhadauria

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Source: https://flows.cv/varunbhadauria
JSON Resume: https://flows.cv/varunbhadauria/resume.json
Last updated: 2026-04-12