AndrianAndrian Lloyd MaagmaAndrian Lloyd Maagma

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Case Studies

Breakdowns of the problems I explored, the systems I built, and the engineering decisions behind them.

2026

Building a metering and billing engine for LLM usage
A small backend that meters LLM usage, enforces quotas, and syncs subscriptions with Stripe, built around getting retries and billing right.
2026
• 3 min read
Replacing a real estate booking form with an AI voice agent
I automated a real estate property viewing pipeline by integrating an AI voice agent with the scheduling, calendar, and reminder workflow behind it.
2026
• 6 min read
Rebuilding face search so it doesn't need a selfie
I redesigned an event photo search workflow by replacing one-time selfie searches with face clustering, making it possible to find photos without repeatedly uploading a selfie
2026
• 7 min read
Replacing students' #ForSale posts with a marketplace that knows what you want
Students already buy and sell through scattered Facebook posts, so Iskommerce turns those into a structured marketplace with personalized suggestions.
2026
• 8 min read
Turning Messenger food orders into a real delivery system
Miagao's food delivery runs through scattered Messenger conversations, so MiaGo turns informal orders into a structured system for customers, vendors, and riders.
2026
• 5 min read
Catching code plagiarism without vector embeddings
Code can look different while doing the same thing, so Astra compares program structure instead of text to detect similarities using traditional algorithms instead of machine learning.
2026
• 5 min read
Integrating AI into critical systems without making it critical
Project HERMES uses AI to turn natural disaster reports into structured incident data while keeping human validation and reliable workflows in control.
2026
• 7 min read
Making driver safety monitoring accessible with just a phone camera
Most driver monitoring systems require expensive hardware, so Manobela uses phones to detect drowsiness and distraction in real time.
2026
• 6 min read

2025

Building a file compressor from scratch to test my data structures
Huffman coding needs trees, heaps, and hash maps to work, making it a good test for implementing core data structures from scratch.
2025
• 4 min read
Building a game from scratch to finally understand OOP
I built a survival game from scratch in Java, using real game systems as a way to understand OOP principles beyond textbook examples.
2025
• 5 min read
Formatting text on sites that don't let you
I got tired of opening sketchy Unicode text generators every time I wanted bold text on LinkedIn or Facebook, so I built a browser extension that brings it directly into the page.
2025
• 5 min read
Building the TUI file renamer I wanted and discovering 5K people wanted it too
I got tired of leaving the terminal just to rename files, so I built the tool I actually wanted to use. It turns out I wasn't the only one.
2025
• 5 min read
Turning a sentence into a task without an LLM
Most task apps make you fill out separate fields for dates and priorities. Backlogs lets you type naturally and extracts them automatically with a rule-based parser.
2025
• 5 min read
Making an election result verifiable without a trusted middleman
We built eHalalan to explore whether blockchain could make election results publicly verifiable without relying on a single authority to tally the votes.
2025
• 3 min read
Generalizing a crowdsourced dictionary I built for one language
Aklish worked for Aklanon. Kulasisi is what happens when I stop treating that as a one-off and build it for every Philippine language that needs it.
2025
• 5 min read

2024

Building a dictionary for a language with none
I built Aklish after realizing that looking up Aklanon words often meant asking my parents because there wasn't a reliable online dictionary.
2024
• 5 min read
Finding root words in a language no NLP library supports
I built AklStemmer after discovering that dictionary-based spell checkers are difficult for inflected words.
2024
• 5 min read

2023

Recovering root words from Tagalog's heavy affixing
I built TglStemmer after discovering that dictionary lookups weren't enough for TagLID
2023
• 5 min read
Telling Tagalog and English Apart Inside the Same Sentence
I built TagLID after existing language detectors failed on Taglish during a research project.
2023
• 5 min read

© 2026 Andrian Lloyd Maagma / source code