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Data Sistah®
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Tiffany Teasley smiling in a pink and white tracksuit against a wall of pink flowers.

Teacher, turned data scientist, turned forward deployed engineer.

I spent 20 years teaching math. Now I build AI systems for a living.

I am the mentor I did not have. Breaking into data and AI without a CS degree or connections, moving from data science into AI engineering, or already in and finding it harder than anyone told you — you are who I do this for.

Apply for mentorshipSee how I help

  • LinkedIn Top Voice

    2024 and 2025

  • LinkedIn Learning

    Instructor

  • National Board Certified Teacher

    20 years in the classroom

  • Forward deployed engineer

    Building AI systems with customers today

The story

  1. Where I started

    High school math teacher

    Two decades breaking hard things down for people who were sure they were bad at math. That skill turned out to be the whole job.

  2. The hard middle

    Data scientist

    Bootcamps did not get me hired. Building real projects with real data and showing the work in public did.

  3. Where I am now

    Forward deployed engineer

    I sit with customers, work out what they actually need, and build the AI system in front of them.

Most career coaches stopped coding years ago. I did not.

Tiffany Teasley laughing, in a black T-shirt reading “If it costs you your peace, it’s too expensive.”

Why I left

If it costs you your peace, it’s too expensive.

I wore that shirt for a reason. I gave twenty years to a classroom — National Board Certified, and good at it — and by the end it was costing me more than it paid.

So I left, in my forties, with no CS degree, no connections in tech and nobody ahead of me on the path who could tell me whether any of it was going to work. I paid for courses that did not get me hired. I took far longer than I needed to, because I did every part of it alone.

I learned the hard way so you do not have to.

I failed my first data science interview and still earned the offer.

That moment shaped how I coach and teach. It is not about being perfect. It is about being clear, consistent, and able to show real value with your work.

I did the whole thing without a mentor. That is the part I would change. Not the courses and not the projects — one person who had already done it and would tell me the truth about where I actually stood.

It does not stop at the offer either. The job is where it gets harder: the first review, the project you are in over your head on, the raise you do not ask for. That is when people need a mentor most and usually have nobody.

So that is what I am now, for more than a thousand people so far. Not a course, not a coach you see once. The mentor I did not have, for as long as you need one.

Recognition

Not someone who read about this transition. The person who made it — and then got asked to teach it.

Tiffany Teasley at LinkedIn's offices, resting a hand on the LinkedIn Learning sign.
  • LinkedIn Top Voice, 2024 and 2025
  • LinkedIn Learning instructor
  • National Board Certified Teacher, 20 years in the classroom
  • Featured by Udemy for the story of landing her first data science job
  • Named one of the “Amazing People” at LexisNexis in under two years as a data scientist
  • Course facilitator on Maven for “Building LLM Applications from Scratch Into Production”
  • New York Times Square billboard
  • Published in KDnuggets, “How I Got My First Job as a Data Scientist”

You are in the right place if

Any one is enough. Most people see themselves in three or four.

  • You have finished the courses and still cannot answer “what have you built”

  • You are applying into portals where nobody inside is passing your name along

  • You have the skills but your resume reads like a beginner

  • You got the job and year one is harder than anyone said it would be

  • You are a data scientist moving into AI engineering, not looking for another SQL tutorial

  • You are done guessing and want the order to do things in

The part you cannot buy

My network becomes your network.

Most career coaches can teach you to apply. I can introduce you.

Employee referrals are how these jobs actually get filled. When you are ready, I introduce you to people I know — hiring managers, engineers, recruiters — and help you go after one.

I am not promising you a referral and I am not promising you a job. I will not introduce someone who is not ready either. Every introduction spends my name, which is exactly why it means something when it comes.

Mentorship

The only mentor you will need.

Career changers. Complete beginners. Analysts becoming data scientists. Data scientists becoming AI engineers. People already in the job and stuck. I mentor all of them — and unlike almost everyone else, I do not disappear the day you sign the offer.

  • A call with me every week

    Booked in advance, on the calendar. It does not depend on either of us having a good week.

  • Priority DM and email

    Between calls, you go to the top of my inbox instead of the bottom of it.

  • Before the offer

    • A plan for where you are going, not a list of courses
    • A resume that reads like a hire
    • Projects worth your name, and how to talk about them
    • Interview prep, including the questions you dread
    • Salary negotiation, before you say a number

  • After it

    • The first ninety days, where people quietly decide they do not belong
    • The project you are in over your head on
    • Your first performance review
    • The raise and the promotion you would not have asked for
    • The next move, whenever it comes

  • The introductions

    • Employee referrals — my network becomes yours
    • Introductions to hiring managers, engineers and recruiters who take my word for it
    • The private community
    • Group sessions and live teardowns when I run them
Apply for mentorship

I read every application myself and I do not accept everyone. Billed monthly if you are accepted, cancel any time. Questions? Email me.

1,000+

professionals helped

20

years in the classroom

2

years running as a LinkedIn Top Voice

People who were where you are

After getting many rejection from recruiter, I spoke to Tiffany and she took her time to review my LinkedIn profile and gave me advice on what needs to be changed. She went further by recommending tutorial videos. It wasn't long after I got my first role. I will recommend her to any job seeker.

Abayomi Bello

United Kingdom

Tiffany was amazing, genuine and personable. She shared several resources with me that have certainly boosted my confidence as a data scientist. What impacted me the most was the level of transparency of her data science journey, which showed me that I can accomplish my goals, as well! My time with her was well-spent!

Steve Chesney

North Carolina

As 40+ career changer, I want to be sure I am efficient with my time to transition. 30 minutes with Tiffany is time well spent. She was able to review all the aspects of a career change and provided actionable next steps. The next steps are key and really invaluable to anyone looking to make a change. It's one thing to desire, it's another to know how to get there. I now have my roadmap to success.

Gregory Morris

South Carolina

Testimonial 1 of 3

Tell me where you are stuck.

No free consultation and no discovery call. Answer a few questions, I read them myself, and if we are a fit I send you everything you need to start. Billed monthly, cancel any time.

Apply for mentorship

Rather ask me something first? Email me at datasistah@gmail.com.