Sanjay Thillaivasan

About Sanjay Thillaivasan

I design and scale systems that endure at enterprise scale—balancing performance, resilience, and cost efficiency while powering critical business outcomes.Over the past decade, across Microsoft, Walmart Labs, and Unilever, I’ve led the architecture of distributed data systems, cloud-native platforms, and low-latency services that operate at petabyte scale. My work spans from 200TB/day signals pipelines with 99.99% uptime at Microsoft to Walmart’s Sponsored Ads & Search platforms that delivered $10M+ in revenue uplift. Architectural ImpactSearch & Relevance: Designed sponsored ads and stacked recall that improved relevance by 5%.Data & Scale: Architected Signal and Spark-based ETL pipelines, scaling from 2TB/day to 200TB/day, while achieving 70% cost savings through compression and storage optimizations.Cloud & Security: Defined secure, multi-cloud data workflows (Azure, AWS, GCP), ensuring compliance and reliability for enterprise adoption.Leadership: Directed multi-phase modernization programs and shaped engineering culture, earning Microsoft’s E+D India Leadership Award.I believe in systemic thinking—optimizing not just code, but also the operating model, reliability posture, and developer velocity. My focus is on enabling organizations to scale sustainably—technically, culturally, and strategically.If you’re driving high-scale systems, cloud modernization, or engineering excellence at scale, let’s connect. t••••••••@gmail.com

Experience

1. Senior Software Engineer Lead

   Microsoft

   Oct 2021 — Present · Bangalore Urban, IN

   Architected Signals pipelines processing 200TB/day with 99.99% availability. • Designed a secure Approval Service for data movement across multi-region Azure environments, achieving 99% reliability.• Served as Security DRI for the SIP Data Movement Platform, acting as organizational POC for 230+ security items; guided cross-functional teams, drove issue resolution, and ensured compliance with security standards.• E+D India FY24 Leadership Award – Recognized for customer obsession at Microsoft.

Education

• Udacity

  Java Programming Nanodegree, Information Technology

  2020 — 2021

• A.L.G Matric Hr.Sec School

  10th, Computer Science

  2006 — 2009

• Lisieux.Matric.Hr.Sec.School

  12th, Computer Science

  2009 — 2011

• PSG College of Technology

  Bachelor of Technology (BTech), Information Technology

  2011 — 2015

Skills

• C++
• Java
• C
• Mysql
• Html
• Microsoft Office
• Ccna
• Data Structures
• Photoshop
• Web Development
• Angularjs
• Visual Basic
• Dbms
• Illustrator
• Php
• Javascript
• Asp.net
• Networking
• Ipv6
• Linux
• Programming
• Sql
• Information Technology
• Object-Oriented Programming (Oop)
• Web Applications
• Representational State Transfer (Rest)