5.0
(49 reviews)
10+ years of experience with AI
United States of America
Speaks English, Spanish and Portuguese
Active today Usually responds in a few hours

Services

$270 / month

Best suited if you need help changing career, building a portfolio and working on projects.

2 calls per month

Unlimited Q&A via chat

Expect responses in 2 days

Hands-on support

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About

Hello! I’m an Electrical Engineer with over 10 years of experience in data analytics and AI. I hold both a Master’s and a Ph.D. in Engineering, which have shaped my deep technical foundation.

Currently, I work at Microsoft, specializing in Generative AI, Large Language Models (LLMs), and copilots within the M365 ecosystem, following a tenure at Microsoft Research. My work blends research and engineering, from evaluating AI models to building impactful, real-world solutions, work that has led to multiple patents and publications.

Over the past 6 years, I’ve mentored 300+ students through MentorCruise, Udacity, and Data Science Dojo, helping them go from fundamentals in Data Science and Machine Learning to confidently applying those skills in projects, research, and industry roles. I’ve also consulted for companies like Shell, Fastshop, Symrise, and Petrobras on advanced AI and ML initiatives, giving me a strong perspective on what works in practice.

If you’re looking to strengthen your skills in DS, ML, or Generative AI, whether you’re a student, career-switcher, or working professional, I can help you create a personalized learning plan, master technical concepts, and build portfolio projects that stand out. Let’s connect on LinkedIn or send me a message here so we can start mapping your next step.

Looking forward!

What mentees say

5 out of 5 stars

Sara is a great mentor overall. I basically came in with no knowledge on LLMs, AI agents, RAG etc. With her I got my first retrieval mechanism work, created a Q/A dataset and started using observability platforms. Very happy how it went.

Maximilian

Maximilian

Standard Plan • 12 months

Working with Max was fantastic. He brought such a valuable product perspective to the technical work, it made diving into LLMs, RAG, and agents so much more dynamic because we could connect the implementation details to real use cases and product thinking. Really enjoyed seeing you build all you did. Wishing you all the best as you continue building with AI!

Sara Malvar

Sara's response

Maximilian wrote 1 more review for the same mentorship

5 out of 5 stars

Sara is a great mentor. If you want to understand the whole LLM and AI engineering space you're in good hands. She really knows her way around the whole prompt engineering, RAG, evaluations and agents pipeline. It's a great feeling that I (as a PM) can explain all the parts of a RAG system to engineers and how to evaluate them.

Maximilian

Maximilian

5 out of 5 stars

Sara is an excellent mentor with deep knowledge in her field. Even though we only worked together for two months, she quickly understood where I was and pointed me in the right direction. She's insightful, responsive, and genuinely invested in helping her mentees grow. Highly recommend!

Angel

Angel

Standard Plan • 2 months

Thank you so much, Angel. Working with you was a pleasure. Your proactiveness and the excellent ideas you brought to our sessions made all the difference. Even in the short time we worked together, it was clear you were fully engaged and ready to take things to the next level. Hope the other side of the world is treating you kindly during your travels!

Sara Malvar

Sara's response

5 out of 5 stars

Sara is an outstanding data science mentor. She helped me through my upskilling, job search, and acceptance negotiation. Now happy in my new job in large part thanks to her.

Luka

Luka

Standard Plan • 6 months

Luka wrote 2 more reviews for the same mentorship

5 out of 5 stars

Sara has been outstanding from the start! Excellent mentor, always ready to help however necessary. She was an important part of how I was able to land my latest job in data science!

Luka

Luka

5 out of 5 stars

Sara has been an amazing mentor. Always encouraging and always helpful for planning out the best way to prepare for interviews or plan my journey going forward.

Luka

Luka

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