Abigail Haddad
I build data tools, blog on Substack, and co-lead Data Community DC and Civic Tech HH DC.
What I've built
USAJobs Historic Tracker
Interactive dashboard comparing federal job listings across 2024 and 2025. Bubble charts show year-over-year changes by department, agency, and occupation — which turns out to require surprisingly fiddly math when bubbles overlap. Includes downloadable raw data for deeper analysis.
USAJobs Historical Data Pipeline
Automated pipeline collecting 3M+ federal job postings, deduplicated across two APIs that don't agree with each other. Playwright scrapes the job questionnaires that the API doesn't provide, and GitHub Actions keeps it running daily without me touching it.
Generic Comment Analyzer
Started as a one-off analysis of 35K Schedule F comments, then I realized the pattern was reusable. LLMs discover stances first, then classify at scale — which means the framework adapts to new topics without rewriting classification rules.
Federal Personnel Records
Cleaned up 27 years of OPM FedScope workforce data so it's actually usable — 150M+ rows that originally required joining a dozen separate lookup tables by hand. Pre-joined and standardized so you can start analyzing instead of data-wrangling.
For My Kids
Four is Magic
Pick any number, count the letters in its name, repeat. You always end up at four. Interactive visualization of why this works, with flow graphs and transition tables.
Proof by Elimination
A grid of hidden numbers, a secret math rule, and five lives. Figure out which numbers are safe to step on before you run out of chances. Eight levels of increasingly tricky rules.
Weirdmageddon
A branching-narrative game set during Gravity Falls: Weirdmageddon. Four paths, dozens of endings (most of them bad), and Bill Cipher speaks in ALL CAPS. Styled like Journal 3.
Talks
GitHub: How To Tell Your Professional Story
posit::conf(2024)
How to use GitHub to showcase your work and build your professional brand in data science.
Finding Your Next Federal Data Job
Data Community DC
Navigating the federal hiring process and finding data science opportunities in government.
What Job Is This, Anyway?
RGOV Conference - Lander Analytics
Using LLMs to classify USAJobs Data Scientist listings and understand the federal data workforce.
Get in Touch
I'm available for consulting on data science and engineering, AI/ML evaluation frameworks, and text data pipelines.