Tiera Guinn is just 22 years old and she’s already working with NASA.

As a Rocket Structural Design and Analysis Engineer for the Space Launch System that aerospace company Boeing is building for NASA, Guinn designs and analyzes parts of a rocket that she said will be one of the biggest and most powerful in history.

Guinn, whose career trajectory seems like a sequel to the much-acclaimed “Hidden Figures” movie, has been aspiring to become an aerospace engineer since she was a child.

Her mom, who noticed her daughter’s skills from a young age, made sure to Guinn stayed sharp by putting her intelligence to use…at the supermarket.

“When [my mom and I] would go to the grocery store, she would get me to clip coupons [and] put it in my coupon organizer,” Guinn told WBRC News. “By the time we got to the register, I’d have to calculate the exact total, including tax. And I did that since I was six years old.”

“One day I saw a plane fly by and I just had this realization, ‘huh, I can design planes. I’m going to be an aerospace engineer,”’ Guinn said.

She chose all of her middle school classes accordingly and commuted an hour to go to the high school that would best prepare her for the future.

Now, Guinn will soon be graduating from MIT with a 5.0 GPA and is clearly on a path to success. She said she’d advise young girls looking to follow in her footsteps to expect obstacles throughout their journey.

“You have to look forward to your dream and you can’t let anybody get in the way of it,” she said. “No matter how tough it may be, no matter how many tears you might cry, you have to keep pushing. And you have to understand that nothing comes easy. Keeping your eyes on the prize, you can succeed.”

This article originally appeared on the Huffington Post.