Java
Python
AWS
SQL
C++
Spring Boot
Full stack developer · open to opportunities

Kashish Mangal

I build scalable backend systems.

I work across the whole stack: Java and C++ where performance matters, Python and SQL for data, and AWS to run it all. Every project below is an interactive demo you can try right in your browser.

See my work ↓ Get in touch
Scroll
👋 About

Behind the code

Hey, I'm Kashish, a full stack developer who loves building systems that work at scale. I work across the entire stack: API design and database tuning, cloud infrastructure, and clean, friendly user interfaces.

My backend roots are in Java and C++, where I'm most at home when performance matters. I reach for Python for data work and automation, and on the cloud side I spend most of my time on AWS, wiring services together and keeping distributed systems reliable.

SQL is more than a tool for me. Good schema design, well-placed indexes and a properly tuned query are puzzles I enjoy solving.

I care about code other developers can read and trust: clear structure, sensible abstractions and documentation that actually helps.

0
Core languages & tools
0
Interactive project demos
0
SQL anti-patterns QueryMind catches
AWS
Primary cloud platform
🛠️ Skills

What I work with

The languages and tools I use to build production systems.

⚙️

Backend & Systems

JavaSpring BootC++REST APIsMicroservicesgRPC
☁️

Cloud & Infrastructure

AWSEC2 / LambdaS3 / GlueCloudWatchRDSDynamoDB
🐍

Data & Scripting

PythonSQLPostgreSQLETL PipelinesData Modelingpandas
🎨

Frontend & Practices

JavaScriptHTML / CSSResponsive UIGitDockerCI/CD
🚀 Projects

Things I've built

The previews below are the real demos running live. Click one to try it yourself, no install needed.

/projects/cloudpulse
🌩️
Live preview Open the demo →
// PROJECT 01

CloudPulse

AWS infrastructure monitoring dashboard
Interactive demoSimulated data

A dashboard for keeping an eye on AWS services. The Spring Boot backend polls CloudWatch, works out a health status for each service, and pushes threshold alerts to the browser over WebSocket. The demo runs on simulated metrics, so you can hit Trigger Incident and watch the alerts fire.

JavaSpring BootAWS SDKCloudWatchWebSocketJavaScript
Try the demo →
/projects/querymind
🧠
Live preview Open the demo →
// PROJECT 02

QueryMind

SQL query analyzer & optimizer
Interactive demoReal analysis

Paste any SQL query and get a score out of 100. QueryMind flags 10 performance anti-patterns, like leading wildcards, cartesian joins and DELETEs without a WHERE, explains each one, and rewrites the ones it can fix safely. Written in Python with a command-line tool; the demo runs the same rules in your browser.

PythonSQLJavaScriptCLIRegex
Try the demo →
/projects/dataforge
⚡
Live preview Open the demo →
// PROJECT 03

DataForge

ETL pipeline: S3 to Redshift
Interactive demoSimulated data

A Python ETL framework that streams JSON, CSV and Parquet files from S3 in batches, validates every row, and loads clean data into Redshift through a staging table. Bad rows go to a dead-letter queue, and failed loads retry with exponential backoff. The demo animates a simulated run so you can watch the data move.

Pythonboto3AWS S3RedshiftSQL
Try the demo →
/projects/breworder
☕
Live preview Open the demo →
// PROJECT 04

BrewOrder

Café menu & table ordering app
Interactive demoMobile-first

A digital menu that guests open from a QR code on their table. They browse and search the menu, add items with playful animations, check out, and follow their order live from "Received" to "Enjoy!". Designed for phones first and tested from small phones up to desktops.

JavaScriptHTMLCSSResponsive designAnimation
Try the demo →
💬 Contact

Let's build something great

Open to new roles, freelance projects and good conversations about tech. I usually reply within a day.

📞 Phone +91 77172 17725 Give me a call →

Prefer your mail app? Send an email