Projects

A shorter checkout that takes customers from cart to order without a separate payment page.

~1s faster checkout, and ~3s faster grocery payments

Problem

Every extra page in checkout adds latency and a chance for the customer to drop off.

What I did

I owned four of the designs and led delivery of a checkout flow that removes an entire page, for both Retail and Grocery.

• System design
• Technical leadership
• Payments

Prefetch optimizations across the full stack for the multi-factor authentication step of payments.

MFA page load from ~6s to ~100ms, and total transaction time from ~16s to ~10s

Problem

The MFA page took ~6s to load, and customers waited on it in the middle of paying.

What I did

I drove prefetch optimizations across the backend, page rendering and front end, so the page has what it needs before the customer reaches it.

• Java
• JavaScript
• JSP
• Performance

A Slack assistant that answers engineers' questions from team documentation.

1000+ queries a month

Problem

Answers to recurring questions were buried across docs, and the same questions kept coming up in chat.

What I did

A retrieval-augmented generation (RAG) bot built with Amazon Kendra, AWS Lambda and Strands Agents. Alongside it, I ran a GenAI learning series for the team.

• GenAI
• RAG
• Amazon Kendra
• AWS Lambda
• Strands Agents

A Model Context Protocol server that lets AI agents work with Amazon Shopping.

Won the hackathon

Problem

AI assistants need a structured, safe way to call shopping capabilities, rather than scraping pages.

What I did

An MCP server that exposes Amazon Shopping actions as tools that LLM agents can call.

• MCP
• LLM agents
• GenAI

A config-driven library that decides which payment methods to recommend at checkout.

Key payment metrics (PCR and PSR) up ~5000 bps; V2 adopted across Retail and other clients; 3–4x throughput

Problem

Checkout needs to suggest the right payment method for each customer, across many different flows.

What I did

A config-driven recommendations library, plus Last-Used (V1 and V2) and Most-Used pipelines. I also tuned the service's garbage collection after a 50% throughput regression.

• Java
• Distributed systems
• JVM tuning

My undergraduate thesis: a mobile health app, plus load tests of the cloud backend behind it.

Problem

Health apps need a backend that holds up as more people use them. The thesis asked how a cloud architecture for an mHealth app behaves under realistic load.

What I did

A React Native app showing daily, weekly and monthly health views, and a Python load-testing harness that seeds the database and simulates many concurrent users against the AWS-hosted API.

• React Native
• JavaScript
• Python
• AWS

App →Load testing →

Detecting signs of muscle fatigue from a wearable motion sensor.

Problem

Weak muscles cause subtle but detectable changes in everyday movements. Could a cheap wearable sensor pick them up?

What I did

Firmware for an ESP32 reading an MPU9250 IMU over I2C, and Python tools to collect, augment and analyse the data. It recognises activities like walking and sitting, and characterises sit-to-stand transitions.

• C++
• ESP32
• Python
• Embedded

Code →

A Discord bot and web app that convert Spotify links to YouTube Music and back.

Problem

Friends share music from different streaming services, and a link only works for people on the same one.

What I did

A Discord bot that converts links asynchronously as they're posted, using the Spotify, YouTube Music and Discord APIs. I later made a web version with React and Flask.

• Python
• Discord API
• Spotify API
• React
• Flask

Discord bot →Web app →

Encrypting and decrypting files with RSA through the OpenSSL C API.

Problem

A Computer Networks course project: secure file transfer using public-key cryptography.

What I did

Command-line encrypt and decrypt programs in C, using OpenSSL-generated key pairs. I wrote up how it works on the blog.

• C
• OpenSSL
• Make

Code →Write-up →

My personal site, rebuilt from Jekyll to Astro in 2026.

Problem

The old Jekyll theme was dated, and its build setup hard to maintain.

What I did

A static Astro site with typed content collections, automatic dark mode, an RSS feed and a sitemap. A GitHub Actions workflow deploys it to GitHub Pages.

• Astro
• TypeScript
• CSS
• GitHub Actions

Code →