$240 / month
Start free, decide later
I've received 5+ job offers in every job search I've run, including in 2026. Two of my mentees have been promoted since we started working together. I help data scientists get to the next level — junior to mid, mid to senior, senior to staff — and I'll show you exactly what the jump requires.
I'm a Senior Staff Data Scientist at Intuit, previously Data Science Tech Lead at Square, with earlier roles at Medium and FiveStars. I've worked across payments, identity verification, sales analytics, ecommerce, product analytics, and data infrastructure, with deep experience in metrics, experimentation, and product decision-making.
Most people stall at a level boundary for the same reasons: the work is solid but the scope is too small, the analysis is correct but doesn't change any decisions, or the impact is real but nobody senior can see it. That's what we work on.
Together we can:
Build a promo case your manager can actually take to committee — scope, artifacts, and evidence
Sharpen your experimentation and causal inference work so it holds up to senior scrutiny
Design metrics that drive product decisions instead of populating dashboards
Get you influence with stakeholders and PMs, not just correct answers
Run realistic senior and staff-level interview loops when you're ready to look outside
I work best with data scientists and analysts who are already in the field and want a specific level change in the next 6–12 months. If you're targeting your next promo or a senior-level move, tell me where you think you're stuck and I'll tell you honestly whether I think I can help.
5 out of 5 stars
Session
Get in touch with Kasia, a data science leader based out of San Francisco, to learn more about her work …
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Kasia Rachuta shares a practitioner's honest guide to integrating AI into data science workflows at Data Debug SF March 2026 …
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You tell Kasia your goals. They see exactly what you want to work on before session one.
You meet within days. Kasia 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.
Kasia Rachuta
Senior Staff Data Scientist at Intuit
Enter your email and we'll let you know when Kasia has open spots. You'll also get a link to manage your wishlist – no account needed.
Book a free intro call with Kasia
Connect with Kasia in a quick call (usually 15-20 minutes)
One-off sessions with Kasia
One-off sessions are a great option if you're looking for specific advice on a certain topic.
One specific question, answered by a Senior Staff Data Scientist. Use it for something you can explain in a sentence or two: which metric to …
A focused working session on one topic in product data science: experiment design, metrics, causal inference, stakeholder influence, career moves, or interview strategy. I've worked …
Enough time to work through a real problem in depth: a project plan, an analysis you're stuck on, an experiment that came out messy, or …
Interview preparation is about showing up with clarity, confidence, and a strong sense of how to present your experience. This MentorCruise session is designed to …
Most strong data scientists lose senior and staff interviews in the behavioral rounds, not the technical ones. Their stories sound one level too junior. In …
Got an offer, or deciding which role to pursue? We'll look at whether the role's scope matches its title (a "senior" role at one company …
A full hour for a bigger topic or two related ones: experimentation strategy, metric design, causal inference methods, a career plan for your next level, …
A realistic product analytics or product sense case mock interview at the senior or staff level, the kind used at top tech companies. We'll spend …
Preparing for promotion to senior or staff? We'll review your self-review, promotion packet, or brag doc against what your next level actually requires: scope, ambiguity, …
Whatever doesn't fit the mold: Get a full hour with a mentor to discuss your needs. Be it help with coding something, deciding on a …
Bring a real A/B test you're planning or one with results you're unsure about. We'll review the hypothesis, primary and guardrail metrics, randomization unit, power …
An extended working session for complex problems: redesigning a measurement strategy, planning a hard experiment end to end, mapping a 6–12 month path to your …
What's included in the trial?
Every trial is a little different–here's what Kasia says about their trial:
We'll meet for a quick call (usually under 30 minutes) where we:
- Break the ice and introduce ourselves
- Discuss your goals and how I can support you
- Coordinate logistics like time zones, meeting frequency, and communication methods