Services
$140 / month
Start free, decide later
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1
Free 7-day trial
No charge until day 7. Cancel anytime. -
2
Ongoing calls + chat
1 × 60-min call per month, unlimited Q&A. Replies in 2 days. -
3
No lock-in
Month to month, no contract.
About
Hi, I’m Stella. I’m a Senior Data Scientist with 9 years of experience in product analytics and experimentation across marketplaces, SaaS, and mobile apps.
Most recently I led experimentation and metrics for an ads product at a healthcare marketplace. Before that I ran the experiments behind a job marketplace product launch that added $17M in annual revenue, and worked on A/B testing, geo experiments, and churn modeling for a consumer mobile app. I studied Applied Statistics at Cornell.
Here's what I can help you with:
- Experimentation: test design, power analysis, CUPED, what to do when results look weird, and how to make the launch call
- Metrics design: picking the right north star and guardrail metrics, and breaking down a metric to find what's really driving it
- Product case studies: the "how would you measure success" and "metric dropped 10%, why?" questions that come up in every DS interview
- DS interview prep: mock interviews with honest feedback, not just encouragement
- Using AI in your analytics work: I build Claude workflows to speed up analysis, and I'm happy to share what works
I've been on both sides of the interview table, and I know how much a good structure matters. I'll push you with follow-up questions the way a real interviewer would.
What happens when you start
You tell Stella your goals. They see exactly what you want to work on before session one.
You meet within days. Stella reviews your application and books your first session, usually within a day or two.
You leave with a plan. Concrete next steps and a weekly rhythm from your very first week.
