Adi Perswal — Software Engineer at Amazon

Amazon — Software Engineer (Jun 2025 - Present)

• Cut $28M in Amazon Multi-Channel Fulfillment (MCF) cost, a 3% reduction, by curbing understocking with an ARIMA-based regional forecasting system that operated on limited demand features.
• Saved $14M, a 1.5% cost reduction across MCF, by building a k-means clustering placement system that cut average shipping distance and boxes per shipment.
• Recovered $1M/month ($12M/year) after a legacy placement system blocked custom networks; traced the fault across services, aligned operations and business teams, and refactored the affected systems.
• Freed 112 engineer-hours per week (14 each, 8 engineers) by building an agentic harness that runs concurrent Gurobi optimization over Athena and Redshift data and auto-generates analysis notebooks.
• Eliminated 16 hours per week of on-call work, a full one-engineer rotation, by building always-on agents that automate on-call report writing, ticket triage, and weekly generative-AI reporting.
• Launched Claude Opus 4.8, 4.7, and 4.6 (1M-token context) to all 85,000 users of Pippin, Amazon's internal document-writing replacement for Word and Quip, retiring the deprecated 4.5 models.
• Scaled service throughput 14x, from 250 to 3,500 TPS with zero degradation, by load testing and reconfiguring Kinesis, DynamoDB, Lambda, and SQS across multiple EDI publishing services.
• Built a statistical discrete-event simulation system that gave 50+ teams forward ROI prediction where none existed, tying upstream changes such as wQL to in-region shipments and ship cost per unit.
• Drove AI-tool adoption from 77% to 100% across two departments by building knowledge bases with hybrid search, prompt directories, harness-engineering practices, and per-work-type tool shortlists.
• Trained 30+ engineers in prompt engineering, context engineering, harness engineering, and model training through hands-on sessions and office hours.

McDonald's — Software Engineer Intern (Jun 2024 - Aug 2024)

• Reduced misinformation in 5 million mobile order emails daily by 95% by creating an end-to-end testing and detection system, resulting in $182,000 yearly savings.
• Saved $32,500 per year by developing an in-house tool to visualize unlimited emails without an inbox.

CME Group — Technology Intern (May 2023 - Aug 2023)

• Analyzed over 240 company-wide datasets to identify cost savings in external-party software usage and areas for security improvement, leading to realized savings of $38,000 over the summer and a projected $510,000 over the next 6 months.
• Built a proof-of-concept Google Cloud enterprise data and document sharing platform with organization-wide and lifetime management policies, DLP, VPC, and admin operations, with expected savings of $2.1 million per year.
• Built 6 JavaScript and C++ automation scripts enabling all future stakeholders to analyze datasets automatically for key risk indicators and display results on an R-based dashboard.

Illinois Business Consulting — Senior Manager (Dec 2022 - May 2023)

• Led a team in building an asset replacement model managing 1,000+ assets across 3 countries to increase utilization and decrease expenses in the range of $75M for a Fortune 50 company.
• Implemented recurrent neural networks in Python to process time-series data of 700,000 data points and project operating expenses 10 years into the future for a binary decision tree.
• Created economic models within the corn processing industry and a DCF model for a leading midwestern agricultural company to identify future revenue streams growing at 15% with revenue opportunities of $2.5M+ per year.

Illinois Business Consulting — Project Manager (Aug 2022 - Dec 2022)

• Delivered presentation on analogous industries for industrial conglomerates through primary and secondary research based on academic papers, market analysis, and expert interviews.
• Developed workstreams and project roadmaps for 8 consultants, scoping projects to reach and exceed client goals, leading to returning engagements for IBC.
• Built asset useful-life prediction model and transitioned statistical model from Python to Excel for a more intuitive interface.
• Wrote 18-page training and troubleshooting guidebook.
• Conducted regression analysis and began implementation of time-series and polynomial regression models.
• Led workshops in Excel, PowerPoint, and client relations.

Illinois Business Consulting — Experienced Consultant (Sep 2021 - Aug 2022)

• Led development of one month's worth of workstreams and team meetings.
• Conducted primary and secondary research based on government reports, personal interviews, and academic papers to understand markets and pain points.
• Built and presented over 15 slide decks with professional formatting and clear delivery.
• Led product management and demonstration of following through with creating ideas from start to finish.
• Led financial analysis and demonstration of information for multiple public companies.
• Contributed to building over 10 slide decks and developed workstreams for consultants.

Founders - Illinois Entrepreneurs — Director (May 2022 - Dec 2022)

• Developed semester-long university-wide event to lead startups from idea to MVP creation.
• Created 12 subject-based curriculums and slide decks with 8 mentors to incorporate activities.
• Incorporated network amongst 50 industry professionals to assist students in work-based literacy.

Founders - Illinois Entrepreneurs — Exploration Team Member (Sep 2021 - May 2022)

National Organization for Business and Engineering: UIUC Chapter — Vice President of External Affairs (Nov 2020 - Dec 2021)

• Built a network of 100+ corporate contacts for sponsorships and funding.
• Redesigned website for increased online traffic and engagement of 125%.
• Led the organizing and planning of philanthropic events to engage the local community through charity livestream while collaborating with Gies College of Business.

National Organization for Business and Engineering: UIUC Chapter — Business and Technology Consultant (Sep 2020 - Nov 2020)

• Researched energy industry within hydro, P2G, and wind to find the best entry.
• Created multiple pitch decks and financial models for support of decisions.
• Led development of qualitative and quantitative analysis with an immersive presentation.

Self Employed — Website Developer Partner (Feb 2019 - Aug 2020)

• Developed skills within sales and time management to ensure quality and efficiency of the final product.
• Networked on multiple online discussion boards reaching over 4,000 people along with visiting local businesses, offering a total of 65 small businesses a revitalized website and sales procedure.
• Project: Laser Trees — Increased interactions from 200 monthly impressions to over 1,000. Utilized 389 keywords to improve website ranking from 4,405,535 to 3,299,389.
• Project: ByeByeBugs Wenatchee — Designed and developed interactive website along with back-end analytics interface. Assisted owners with creating a 10-step business plan and networking for new clients. Created 2-month social media marketing plan and executed ad sets bringing over 5 major sales within the first month.

Coding by Hand

A course that teaches Python and deep learning from scratch — from print("hello") to a transformer built by hand in pure Python — for someone who has never written a line of code, with a parallel Rust track that goes all the way down to computer architecture. Every lesson pairs one running analogy, a beat of history, code you type and run yourself, and a textbook-style diagram. Built on the belief that learning to code is about thinking logically and understanding the real limits of computers, not memorizing syntax.

Prose

A minimalist iOS writing app with a live Hemingway-style editor: your readability grade updates as you type, and one toggle highlights long sentences, passive voice, adverbs, inflated vocabulary, and filler words right where you wrote them. Fast like Apple Notes, clean like Notion, and deliberately free of AI, cloud, and accounts — your half-formed ideas stay on device and get better over time, like wine.

Prose-Agent

The Prose engine from my iOS writing app, turned into a deterministic API that a coding agent loops on. An agent sends a markdown draft and gets back exactly what to fix and where: the long sentence, the inflated word with its plain replacement, the spot in the source. It applies the edits and sends the draft again, until the verdict comes back clean. There is no model behind it, so the same draft always returns the same notes, and an agent can lean on it without the answer drifting. It connects over MCP, so any agent picks up the tool from one URL, and the whole thing runs on a single Cloudflare Worker.

PhD for Dummies

Famous AI/ML/RL papers explained in layers, each with diagrams and a live simulation you can reach in and break. I built it because I wanted to keep up with the field but had never learned to read a paper — I'd hit a wall of symbols on page one and close it. Every paper climbs from a version a five-year-old could follow up to the one a peer researcher would argue with, and the demo runs the paper's real rules, so you learn the mechanism by poking it rather than watching a cartoon of it. Under the hood a chain of Claude skills does the work — thinking, writing the layers, building and reviewing the simulations, writing tests, generating diagrams, converting them to WebP and pushing them to blob storage — so a paper goes from PDF to something I actually understand before I write a line of implementation.

AutoDocs

Open-source documentation engine that parses any repo's AST with tree-sitter and SCIP, builds a dependency graph, and walks it to generate accurate, dependency-aware docs. Ships with a built-in MCP server so coding agents can deep-search your code via HTTP.

Motus

Finds the cheapest set of flights that land a whole group in one place within the same arrival window. Each traveler lists the airports they can fly from, and Motus picks one flight per person so everyone arrives within an hour or two of each other while the group pays as little as possible. Every price is all-in, folding each person's checked and carry-on bag fees into the fare so a cheap basic fare competes fairly with a bags-included one. It runs on live RouteStack fares and ships its own Code-Mode MCP server, so an AI agent can run group searches by writing small snippets of code against a sandboxed SDK.

Personal Portfolio

Interactive portfolio website designed to mimic the macOS desktop experience, featuring draggable windows, functional dock, and realistic desktop environment.

HyppoHealth

A platform reshaping how Americans navigate healthcare with free tools and expert-backed resources for understanding and optimizing healthcare costs. Features include insurance comparison tools, cost calculators, and comprehensive educational resources.

CloudFormation To Terraform

Popular open-source tool that converts AWS CloudFormation templates to Terraform configurations with both web and CLI interfaces. Features include multi-file support, state file generation, security analysis, and documentation generation.

Quick Transcriber

Real-time speech-to-text application that locally transcribes your voice and types it at cursor position, with no internet required. Features always-on-top monitoring window and global keyboard shortcuts.

Pricing Optimizer

Calculates the price that maximizes profit per SKU using competitor data, customer willingness-to-pay curves, and elasticity math.

High-Value Customer Finder

Identifies the audience segment that values your product at 30-50% higher prices, with their pain points, hangouts, and the exact words they use.

Creator ROI Screener

Vets influencers by real engagement rates, past conversion results, fees, and whether they'll be profitable at your margins.

3PL Cost Comparison

Ranks third-party logistics providers by actual landed cost based on your products, volumes, and customer geography.

Manufacturer Matcher

Matches suppliers to your volume, quality requirements, and payment terms with verified reviews and real lead times.

Inventory Reorder Calculator

Generates exact reorder quantities and a month-by-month PO schedule based on sales velocity, seasonality, and supplier lead times.

Support Root Cause Analyzer

Finds the 3-5 root causes generating most of your support tickets and gives specific fixes that eliminate them at the source.

Automation Blueprint Builder

Turns a manual process description into a Zapier/Make-ready playbook with triggers, actions, filters, and field mappings.

Email Verifier API

Serverless email verification service built on AWS Lambda that validates emails through syntax checks, disposable email detection, MX record verification, and SMTP checking via AWS SES, with response caching in DynamoDB.

Leads List Cleaner

Web application that leverages the Email Verifier API to process marketing lead lists, detect invalid or disposable email addresses, and improve overall campaign deliverability and effectiveness.

Social Media Poster

Automation tool for scheduling and posting content across multiple social media platforms with analytics tracking.

WordFillWithFriends

Multiplayer Wordle-style word guessing game with competitive tier progression (Bronze to Diamond), global leaderboards, friend challenges, and customizable profiles with real-time updates.

Figma Clone

Fully-functional Figma clone with real-time collaboration features including multi-cursors, cursor chat, reactions, and comments. Supports shape creation, image upload, freeform drawing, element customization, and full history with undo/redo functionality.

Google Drive Clone

File storage and sharing platform built to store blog posts from content-generator for freelance clients. Features file upload, organization, and sharing functionality similar to Google Drive.

Notepad Clone

Desktop text editor application built as a first foray into desktop software development. Features standard text editing capabilities, file operations, and a customizable interface inspired by Microsoft Notepad.

Crossy Road Clone

Recreation of the popular Crossy Road game with similar mechanics, obstacles, and character movement.

Productivity Manager

Integration tool that extracts tasks from Notion databases and automatically block schedules them into Google Calendar, creating a streamlined workflow for time management and deadline tracking.

Options Contract Pricing

Advanced financial analytics platform for options traders with four specialized modules. Features include Black-Scholes modeling, Monte Carlo simulations, SABR volatility modeling, sentiment analysis from institutional trading data and Reddit, and mispriced contract identification through a public API.

Skool Sentiment Analysis

Chrome extension that analyzes text on Skool.com, identifying frequently used phrases and assessing overall sentiment (from Super Negative to Super Positive) to help users gauge the mood of discussions. Processes text directly in the browser for privacy.

Skool Active Members

Chrome extension that creates a leaderboard of the most active participants in Skool communities, helping admins and members identify key contributors. Core functionality uses proprietary algorithms to track engagement metrics.

Skool Inactive Members

Chrome extension that automatically scans Skool communities to identify members inactive for over 30 days. Features automated page navigation, data extraction of member profiles, and CSV export functionality for easy re-engagement outreach.

Diabetes Heart Parkinsons Predictor

Web application with multiple machine learning models to predict Diabetes, Heart Disease, and Parkinson's from patient data. Includes pre-trained models stored in the application for immediate predictions via an interactive Streamlit interface.

Content Generator

AI SEO Blog Generator that creates optimized content using OpenAI's GPT model and sources relevant images via Pexels API. Features AIDA and PAS copywriting frameworks, keyword optimization, and customizable blog structures.