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Tejas Shinkar

Systems Engineer moving into Cloud, DevOps & AI — one hands-on AWS project at a time. Documenting what I build, break, and learn. Open to freelance work along the way.

Work

Systems Engineer → Cloud/DevOps/AI (open to freelance)

AWS Database Mini Projects - RDS, Aurora, DynamoDB & ElastiCache

AWS Database Mini Projects - RDS, Aurora, DynamoDB & ElastiCache

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4 min read

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When You Know Something's Wrong But Can't Say Why Yet - Jesse Pinkman Energy

When You Know Something's Wrong But Can't Say Why Yet - Jesse Pinkman Energy

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5 min read
The Iron Throne Problem: Why Everyone Wants Admin Access and Nobody Should Have It

The Iron Throne Problem: Why Everyone Wants Admin Access and Nobody Should Have It

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3 min read
Server Data Archival to Amazon S3

Server Data Archival to Amazon S3

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5 min read
The Easy Part of Coding Got Automated. The Judgment Part Didn't.

The Easy Part of Coding Got Automated. The Judgment Part Didn't.

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1 min read
AWS Route 53 Hands-On Labs

AWS Route 53 Hands-On Labs

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5 min read
AWS CloudWatch, CloudTrail & EventBridge: Something Broke at 2am and I Wasn't Even Watching. Here's the AWS Stack That Was

AWS CloudWatch, CloudTrail & EventBridge: Something Broke at 2am and I Wasn't Even Watching. Here's the AWS Stack That Was

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11 min read
AWS SNS + SQS Hands-On Lab

AWS SNS + SQS Hands-On Lab

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3 min read
AWS Lambda Hands-On Lab

AWS Lambda Hands-On Lab

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4 min read
So… If AI Can Write Code, What Are Software Engineers Getting Paid For? 👀

So… If AI Can Write Code, What Are Software Engineers Getting Paid For? 👀

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2 min read
I Thought Knowing AWS Was The Goal. I Was Wrong.

I Thought Knowing AWS Was The Goal. I Was Wrong.

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2 min read
I Thought Caching Was Just About Speed. Then I Found the Security Trap. 💀

I Thought Caching Was Just About Speed. Then I Found the Security Trap. 💀

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3 min read
I broke my own AWS infrastructure… without touching the infrastructure.

I broke my own AWS infrastructure… without touching the infrastructure.

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1 min read
AWS CloudFront: Your Website Was Slow for Users on the Other Side of the World. CloudFront Is Why That's Fixable

AWS CloudFront: Your Website Was Slow for Users on the Other Side of the World. CloudFront Is Why That's Fixable

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14 min read
AWS EFS Hands-On Lab

AWS EFS Hands-On Lab

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5 min read
Your Torrent Isn't Downloading From "The Internet"

Your Torrent Isn't Downloading From "The Internet"

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1 min read
AWS VPC Hands-On Lab

AWS VPC Hands-On Lab

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11 min read
AWS S3 Hands-On Lab

AWS S3 Hands-On Lab

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11 min read
AWS EC2 Hands-On Lab

AWS EC2 Hands-On Lab

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7 min read
AWS Highly Available Web Application: ALB, Auto Scaling & Self-Healing

AWS Highly Available Web Application: ALB, Auto Scaling & Self-Healing

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6 min read
Network Protocols — ARP, FTP, SMTP, HTTP, HTTPS, DNS and DHCP

Network Protocols — ARP, FTP, SMTP, HTTP, HTTPS, DNS and DHCP

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5 min read
Routers — How ARP and Routing Work Together

Routers — How ARP and Routing Work Together

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5 min read
Switches Explained — How Devices Communicate Within a Network

Switches Explained — How Devices Communicate Within a Network

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5 min read
How Hosts Actually Communicate on a Network- ARP and Default Gateway

How Hosts Actually Communicate on a Network- ARP and Default Gateway

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6 min read
OSI Model Explained — Understanding How Network Communication Works

OSI Model Explained — Understanding How Network Communication Works

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8 min read
Network Devices Explained — The Foundation Every Cloud & DevOps Engineer Needs

Network Devices Explained — The Foundation Every Cloud & DevOps Engineer Needs

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6 min read
AWS IAM Hands-On Lab

AWS IAM Hands-On Lab

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5 min read
AWS CloudFormation: I Stopped Clicking Buttons in the AWS Console.

AWS CloudFormation: I Stopped Clicking Buttons in the AWS Console.

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16 min read
AWS Route 53 Breakdown: DNS Isn't Boring, It's Just Misunderstood

AWS Route 53 Breakdown: DNS Isn't Boring, It's Just Misunderstood

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19 min read
AWS SQS & SNS: Your Services Don't Need to Talk Directly. Here's Why That's a Good Thing.

AWS SQS & SNS: Your Services Don't Need to Talk Directly. Here's Why That's a Good Thing.

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14 min read
Lambda: The "Serverless" Service That Still Has a Cold Start Problem

Lambda: The "Serverless" Service That Still Has a Cold Start Problem

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16 min read
I Kept Confusing These Three AWS Databases. Here's the Cheat Sheet I Wish I Had

I Kept Confusing These Three AWS Databases. Here's the Cheat Sheet I Wish I Had

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15 min read
AWS RDS & ElastiCache: Managed Databases for People Who'd Rather Not Get Paged at 3am

AWS RDS & ElastiCache: Managed Databases for People Who'd Rather Not Get Paged at 3am

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23 min read
AWS VPC Extended: Route Tables, Flow Logs, and the Transit Gateway I Didn't Know I Needed

AWS VPC Extended: Route Tables, Flow Logs, and the Transit Gateway I Didn't Know I Needed

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16 min read
AWS VPC From Scratch: Building Your Own Private Network Inside AWS

AWS VPC From Scratch: Building Your Own Private Network Inside AWS

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21 min read
AWS S3 Part 2: Versioning Saved Me From Myself

AWS S3 Part 2: Versioning Saved Me From Myself

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15 min read
AWS S3: One Misconfigured Bucket Policy Away From a Very Bad Day

AWS S3: One Misconfigured Bucket Policy Away From a Very Bad Day

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19 min read
AWS ELB & Auto Scaling: I Killed a Server on Purpose to See If My Infrastructure Would Heal Itself

AWS ELB & Auto Scaling: I Killed a Server on Purpose to See If My Infrastructure Would Heal Itself

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16 min read
AWS EFS: The AWS Service That Lets 100 Servers Share One Folder

AWS EFS: The AWS Service That Lets 100 Servers Share One Folder

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13 min read
AWS EC2: I Thought It Was "Just a Server." I Was Wrong.

AWS EC2: I Thought It Was "Just a Server." I Was Wrong.

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24 min read
APIs with `requests`, HTTP Methods & Status Codes, API Authentication, Boto3 (AWS SDK) Intro

APIs with `requests`, HTTP Methods & Status Codes, API Authentication, Boto3 (AWS SDK) Intro

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9 min read
Exception Handling (`else`/`finally`, `raise`, Debugging Tools) + Regular Expressions (`re` module)

Exception Handling (`else`/`finally`, `raise`, Debugging Tools) + Regular Expressions (`re` module)

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15 min read
Modules (Deep Dive), File Handling, Exception Handling

Modules (Deep Dive), File Handling, Exception Handling

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13 min read
Functions, Scope (Local/Global), Arguments, return, Lambda, filter()/map()/reduce(), Modules

Functions, Scope (Local/Global), Arguments, return, Lambda, filter()/map()/reduce(), Modules

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12 min read
while Loop, break & continue, Lists (Creation, Mutability, Methods, List Comprehension)

while Loop, break & continue, Lists (Creation, Mutability, Methods, List Comprehension)

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11 min read
AWS IAM: The One AWS Service That Can Lock You Out or Save You: Roles, Policies & Groups Explained

AWS IAM: The One AWS Service That Can Lock You Out or Save You: Roles, Policies & Groups Explained

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14 min read
String Methods, Conditional Statements (if/elif/else), Loops (for, range())

String Methods, Conditional Statements (if/elif/else), Loops (for, range())

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8 min read
AWS Isn't in "The Cloud"- It's in 33 Specific Buildings. Here's Why That Matters.

AWS Isn't in "The Cloud"- It's in 33 Specific Buildings. Here's Why That Matters.

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12 min read
chmod, find, locate, grep & sed

chmod, find, locate, grep & sed

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12 min read
Python Strings: Indexing, Slicing, and Essential String Methods

Python Strings: Indexing, Slicing, and Essential String Methods

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3 min read
Variables, Operators, and Strings

Variables, Operators, and Strings

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2 min read
Day 1 of AWS: I Locked Myself Out of My Own Account (And Why That's a Good Sign)

Day 1 of AWS: I Locked Myself Out of My Own Account (And Why That's a Good Sign)

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13 min read
File System Deep Dive, File Operations & Permissions

File System Deep Dive, File Operations & Permissions

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11 min read
Data Types, Typecasting, eval(), Boolean Logic, Input/Output, String Formatting

Data Types, Typecasting, eval(), Boolean Logic, Input/Output, String Formatting

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4 min read
OS Architecture, Kernel, Shell & File System

OS Architecture, Kernel, Shell & File System

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5 min read
Python Basics — `print()`, Variables, Identifiers, Data Types

Python Basics — `print()`, Variables, Identifiers, Data Types

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5 min read
From System Engineer to Cloud & DevOps Engineer: Understanding the Big Picture

From System Engineer to Cloud & DevOps Engineer: Understanding the Big Picture

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5 min read
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