Penelope Lafeuille @FitDataScience

Helping data science graduates land $100K+ tech jobs and get promoted, while building a strong body and mind. Science-backed health & Performance & Psychology penelopefitdatascientist.substack.com/?utm_campaign=… San Diego Joined May 2025

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Penelope Lafeuille @FitDataScience

3 weeks ago

The biggest trap I fell into in my first year as a data scientist: → Working hard but on the wrong things → Forgetting to reflect → Ending Fridays with nothing to show but busy work What fixed it? Monday → Friday Debrief ✅ Monday: set 3 priorities ✅ Friday: log what I did…

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Penelope Lafeuille @FitDataScience

3 weeks ago

In data science, one trait matters at every level for career growth: reliability Whether you’re junior, senior, or staff - If people can count on you to deliver consistently, everything else (scope, influence, ownership) grows from there.

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Penelope Lafeuille @FitDataScience

3 weeks ago

Taking care of my mental & physical health isn’t selfish or weak. On the contrary, it makes me better at my job as a data scientist. What’s selfish is showing up to work burnt out, low-energy, and unstable—then expecting your team to carry you. The most unselfish thing you…

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Penelope Lafeuille @FitDataScience

3 weeks ago

In both sports and work, the toughest battles are often mental, not technical. The teenage girl who used to throw her racket would be so proud of me right now. Back then, I thought winning was everything. A mistake felt like failure. A loss felt like the end of the world. Now I…

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Penelope Lafeuille @FitDataScience

3 weeks ago

Quick reminder: No matter how good your model is, if no one uses it… it’s useless. So focus on adoption and communication not just accuracy.

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Penelope Lafeuille @FitDataScience

3 weeks ago

Early in my data science career, I would get frustrated about slow growth or repetitive work. Then I remember how hard it was just to land that first role. Having the chance to learn, earn, and grow in this field really is something to be grateful for.

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Penelope Lafeuille @FitDataScience

3 weeks ago

If you want to 100x the impact of your data science presentations overnight, all you have to do is: • stop talking about what you did first, and • start talking about what your audience can do with it. Delete “I built this model” and replace it with “you can make this…

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Penelope Lafeuille @FitDataScience

3 weeks ago

Last year, I was denied a promotion as a data scientist. Here’s what I learned: • It’s not about asking for a raise. • It’s about making yourself undeniable by creating value again and again. The raise is a byproduct. The impact comes first.