Sachin Kumar Sharma

Associate Director — Enterprise Cloud & AI Advisory | 18+ Yrs: WiMAX → Data Centers → SDN → Azure → Agentic AI. Building Digital Cathedrals.

[Sachin Kumar Sharma @virtualSachIN]

Here are 5 hard-won infrastructure lessons from 18 years in the trenches 🧵👇👇

[Sachin Kumar Sharma @virtualSachIN]

Credit card sales → call center nights → rooftop antennas → Tier-3 DCs → SDDC → agentic AI.

Every step was earned. None of it was planned.

Infra engineers: your networking fundamentals ARE the foundation of cognitive AI.

https://t.co/j7HddcxZ73

[Sachin Kumar Sharma @virtualSachIN]

In 2006, I was selling credit cards door-to-door in Agra.

In 2026, I'm designing agentic AI platforms on Cloudflare's edge network.

No IIT. No engineering degree. No mentor. No plan.

Just one decision in 2007 that changed everything. 🧵

[Sachin Kumar Sharma @virtualSachIN]

I spent years thinking my non-IIT background was a liability.

The call center nights. The credit card job. The drift years in Agra.

Turns out building a career the hard way — learning every layer under real pressure — is what makes you good at AI infrastructure. No shortcuts.

[Sachin Kumar Sharma @virtualSachIN]

*Architecture and decisions: mine. Debugging sessions at odd hours: mine. AI assistance: polish. — Sachin*

[Sachin Kumar Sharma @virtualSachIN]

Here are 5 hard-won infrastructure lessons from 18 years in the trenches 🧵👇👇

[Sachin Kumar Sharma @virtualSachIN]

Whether it was MP-BGP dual-stack IPv6 routing in 2012 or multi-agent vector RAG pipelines in 2026—simplicity is what survives a 3 AM incident review.

[Sachin Kumar Sharma @virtualSachIN]

@AmazonHelp Already did twice, no action, you are also fooling your customer. You do not want to help anyone just sending copy paste replies, looks like @AmazonHelp customer service is dead. Looks like I am wasting time engaging with you. #amazonfraud

[Sachin Kumar Sharma @virtualSachIN]

Beyond frustrated with @amazon Missing an item from an order & their customer service is a nightmare (Order #407-7568780-8088309). Anyone else experienced similar issues? #MissingItem #FeelingIgnored #AmazonHelpNeeded

[Sachin Kumar Sharma @virtualSachIN]

@AmazonHelp Radio silence from @amazonIN Reported missing item from order #407-xxxxxxx-8088309 days ago & sent multiple messages. No response, no resolution. Is this how you treat loyal customers? #MissingItem #DisappointedCustomer #AmazonHelp

[Sachin Kumar Sharma @virtualSachIN]

Ordered 2 items from Amazon (Order #407-XXXXXXX-8088309) but only received 1. Reported it immediately, spent hours on calls, yet got NO HELP! Is this the new Amazon experience? #MissingItem #TimeWasted #HelpNeeded @amazonIN

[Sachin Kumar Sharma @virtualSachIN]

Disappointed with @AmazonHelp Missing an item from order #407-XXXXX-8088309. Reported it within 30 min of delivery & called multiple times but investigation closed without contacting me. Frustrated & losing trust. #MissingItem #PoorCustomerService

[Sachin Kumar Sharma @virtualSachIN]

Can’t leave that group chat? It’s not because of your Android friend—it’s because Apple needs to fix it. Help @Apple #GetTheMessage
https://t.co/ebXk3yOIOh

[Sachin Kumar Sharma @virtualSachIN]

When you get blurry photos or videos, it’s not because of your Android friend—it’s because Apple needs to fix it. Help @Apple #GetTheMessage
https://t.co/ebXk3yOIOh

[Nicolas MICHEL @vPackets]

#NSXT 3.2 is out !
Plenty of new features here! On the networking side: EVPN Route-Server Mode, 5 Tuple ECMP available on ESXi (instead of 2),Proxy ARP in A/A Topologies.
API schema has been simplified for the edge nodes: RN https://t.co/Ucrtu77SaH
Ping me if you have questions!

[Sachin Kumar Sharma @virtualSachIN]

@VishunDayal @HDFCERGOGIC @FinMinIndia @PMOIndia @HomeLoansByHDFC By reading this story, I am not sure if I can believe @HDFCERGOGIC I too have a home insurance, thinking to take a second cover.

[Sachin Kumar Sharma @virtualSachIN]

@CarebyHDFC_HL There is no updates till today, no one contacted to listen me issue. Anyway I am done with your banking. Will look for alternatives. Just wanted to say it loud your customer services are getting pathetic day by day..

[Sachin Kumar Sharma @virtualSachIN]

@HomeLoansByHDFC Hi Team, can you please look into a home loan application I have with @HDFCBank_Cares for BT transfer. Let me know if you can help on this.

[Sachin Kumar Sharma @virtualSachIN]

@CarebyHDFC_HL Will wait for the update.