Available · 2026

Senior Principal Data Scientist

Mychelle
Hale.

I build machine learning for regulated industries, where the model has to be able to explain itself. Causal inference and causal search are where I spend my time.

BEYA 2025 AI Governance Bayesian ML Ex-NASA JPL
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A note

I got into Data Science because a softball coach told me not to swing on a 2-0 count. He was right. Markov Chains agreed.

Markov Chains, Capstone Thesis, CLU 2016–2017

01 — About

Hi, I'm Mychelle.

I kinda stumbled into Data Science during undergrad when I was hunting for a Statistics-related project for my Capstone Thesis. I ended up using Markov Chains to test something a softball coach told me my whole life: don't swing on a 2-0 count. I was running Sabermetrics on MLB data, the analysis backed him up, and I've been in the field ever since.

I care most about problems where the data has stakes and the work helps people. Credit decisions, churn, animal welfare. I also just love a good dataset, which is how I ended up with personal projects on baseball contracts, ADHD genetics, and shelter outcomes. I think a lot about explainability and governance for the same reason. Ethics in ML isn't separate from the work for me. Without diversity in who's building these models, unconscious bias gets baked in by default.

I've been in aerospace for 6 years, currently working on Smart Manufacturing and Condition-Based Maintenance. Before that I did commercial analytics at Urban Science and was a contractor at JPL doing atmospheric chemistry research.

I just recently came back to baseball after years away from it. Two of the projects below are baseball.

Quick Facts

The short version.

  • BasedLos Angeles
  • RoleSr. Principal DS
  • EducationMS Applied Stats
  • LanguagesEN · JP · ES
  • StackPython · R · GCP
  • RecognitionBEYA 2025
  • CommunitiesNSBE · SoCal DS
02 — Projects

Side projects, mostly recent.

/01
Who actually defaults?
CatBoost SHAP AI Governance
Which customer behaviors most strongly predict credit card default, and how do you make that decision explainable enough to satisfy EU AI Act Article 6? Built on the UCI Credit Card Default dataset.
Findings, in progress
/02
Should you call this customer?
Causal Lift A/B Testing Power Analysis
Most marketing analytics measures who converted, not who converted because of the call. Using the UCI Bank Marketing dataset to estimate causal lift from outbound calls, so you can identify which customers the call actually moves and stop wasting effort on the rest.
Findings, in progress
/03
How much do ADHD, depression, autism, and bipolar share?
GWAS LDSC Psychiatric Genetics
How much genetic architecture is shared across ADHD, MDD, ASD, and bipolar disorder, and how have those estimates shifted with the 2023 iPSYCH / PGC ADHD GWAS? Personal interest project.
Findings, in progress
/04
Which animals get out of the LA shelter system?
Classification Data Viz Public Data
LA's shelter system is hugely overcrowded. Which intake characteristics most predict whether an animal gets adopted, transferred, or euthanized, and how long they wait for an outcome? Public data, public-facing visualizations.
Findings, in progress
/05
Which rookies are systematically underpaid?
Causal Inference Natural Experiment Sports Analytics
MLB's pre-arbitration service time rules create a natural experiment. Which pre-arb performance signals causally predict post-arb value, and which signals do front offices act on that turn out not to matter?
Findings, in progress
/06
What declines before the headline numbers?
Causal Search PC Algorithm Sports Analytics
Which biomechanical and performance metrics decline first, before the headline output stats start moving, and the market prices it in? Using causal structure learning on Statcast data to find leading indicators aging curves miss.
Findings, in progress
03 — Speaking

Talks, panels, and one award.

2025
BEYA Modern Day Technology Leader, Award
Honor
Black Engineer of the Year Awards STEM Conference BEYA
2025
Data Day at the Beach, Industry Panel
CSULB
2025
CSULB Women in Engineering, AI & Manufacturing Panel
CSULB WiE
2025
CSULB Women in Engineering, Steering Your Career Coaching Circle
CSULB WiE
2023
Data Day at the Beach, Industry Panel
CSULB
04 — Writing

Writing, eventually.

Coming Soon

I've been meaning to write more, mostly about explainability, governance, and the gap between what models do and what people think they do. Pieces in progress.

Find me on LinkedIn in the meantime.

05 — How I Work

A few things I actually believe.

Explainability is the job.

If a model affects somebody's credit, their job, their access to something, they should be able to get a real answer about why. I won't ship a model I can't explain.

Translation matters more than the model.

Most projects don't fall apart on the math. They fall apart because the people who own the decision and the people who built the model never quite agreed on what the model was supposed to do.

Range, on purpose.

Earth science, automotive, aerospace, with fintech, entertainment, and hospitality on my radar next. Different problems, but messy data and stubborn stakeholders show up everywhere. Range has been good to me.

06 — Get in Touch

Let's talk.

I'm open to senior data science and ML roles, especially ones involving causal inference, causal search, or AI governance. Fintech, entertainment, hospitality, and open globally. I always have time for women in STEM, fellow mentors, and mentees.