Hi, I’m Varun.
I make complex
work feel simple.

Software Development Engineer @ Amazon

VIEW MY RÉSUMÉ

PORTFOLIO / SEATTLE, WA

VARUNGANGAVARAPU.

SOFTWARE DEVELOPMENT ENGINEER

I build systems that turn complex ideas into useful tools, from optimization and data platforms to the interfaces people rely on.

EXPLORE MY WORKVIEW RÉSUMÉ ↗︎
SCROLL TO EXPLORE ↓
OPTIMIZATION DIGITAL TWINS VECTOR SEARCH PRODUCT ENGINEERING JAVA PYTHON TYPESCRIPT JAVASCRIPT GO C++ SQL HTML CSS REACT NEXT.JS NODE.JS SPRING BOOT FLASK EXPRESS TAILWIND CSS PANDAS NUMPY PYTORCH AGENT TOOLING & RULE SETS MCP RAG VECTOR DATABASES PINECONE EMBEDDINGS AWS LAMBDA API GATEWAY DYNAMODB OPENSEARCH DOCKER KUBERNETES GIT LINUX

02 / TIMELINE

A RUNNING RECORD / 2022—NOW

THE PATH
SO FAR.

The places I’ve learned, built, and put ideas to work.

CURRENT / FULL TIMEAmazonSoftware Development EngineerOptimization systems and developer tooling · Seattle, WA AmazonSoftware Development Engineering InternDigital twin platform for fulfillment operations · Bellevue, WA HackRUMaverick Track Winner · Lyrical Vector SimilarityMusic discovery through lyrical emotion
Amneal PharmaceuticalsSoftware Engineering InternSupply chain data, demand forecasting, and AWS cost reduction · Bridgewater, NJ
Rutgers UniversityB.S. in Computer ScienceNew Brunswick, NJ

THREE SELECTED CASE STUDIES FOLLOW

01 / CURRENT WORKSEATTLE, WA · 2026—NOW

EMPLOYER / AMAZON

amazon

Software Development Engineer

I work on the systems that turn complex space allocation decisions into plans teams can use.

MIXED INTEGER PROGRAMMINGAWS BATCHAGENT TOOLING
12% better clustering5× faster runtime
Dramatically lit classical sculpture against a deep blue background
01 / THE MODEL

Make placement better.

I replaced a geometric bisection heuristic with a mixed integer program using McCormick linearization to reward adjacent placements without adding relocation cost.

12%clustering gain
02 / THE SCALE

Solve in parallel.

I moved the optimizer from one process to an AWS Batch pipeline that fans out 23 solvers sized at runtime.

5×faster runtime
03 / THE CRAFT

Turn reviews into rules.

I mined more than 15,000 review comments into verification rules for an engineering agent, making recurring failure patterns easier to catch.

500+defects found in backtesting
02 / INTERNSHIPBELLEVUE, WA · SUMMER 2025

EMPLOYER / AMAZON

amazon

Software Development Engineering Intern

I built a digital twin platform that gave operations teams a shared view of their fulfillment centers.

REACTOPENSEARCHDYNAMODBAWS LAMBDA
64 centers connected5M+ rows each day
Ethereal portrait with luminous crystalline forms and motion blur
01 / THE PLATFORM

One view of operations.

I built a serverless digital twin platform for real-time operational visibility across Amazon fulfillment centers.

64centers connected
02 / THE INTERFACE

Make the data usable.

An authenticated Cloudscape React interface brought deep links, multiple views, and bidirectional URL state to embedded dashboards.

100+dashboards supported
03 / THE PIPELINE

Onboard without code changes.

Configuration-driven ingestion through S3, SQS, OSIS, OpenSearch, and DynamoDB handled 25 metrics and kept queries responsive.

5M+rows each day
03 / INDEPENDENT PROJECTHACKRU · 2024VIEW THE PROJECT

PROJECT / MUSIC DISCOVERY

LYRICAL VECTOR
SIMILARITY

Recommendation engine for music by mood

A different way to discover music: start with how a song feels, not just its genre or artist.

PYTHONPINECONEEMBEDDINGSJAVASCRIPT
Futuristic portrait with a glowing amber visor
01 / THE WIN

Won at HackRU.

Our team won the Maverick Track. I built the interactive frontend and helped take the full stack prototype from idea to a working demo.

1stMaverick Track
02 / THE IDEA

Search for a feeling.

My team built a recommendation experience that lets listeners find songs by emotional tone.

500hackathon entrants
03 / THE ENGINE

Turn music into vectors.

Spotify and Musixmatch data fed a transformer that produced 24-dimensional sentiment vectors, then Pinecone handled nearest-neighbor retrieval.

24Dsentiment space

03 / GET IN TOUCH

THE NEXT CONVERSATION

EXTEND YOUR
HAND

Tell me what you’re building and what needs to work better. I’m always up for a thoughtful conversation.

VARUNSGANG@GMAIL.COM↗︎