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How I Build AI Projects From Scratch

24 min readSep 22, 2026

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Photo by Jakub Żerdzicki on Unsplash

If you’re trying to get a job in AI, you’ve already heard that you’re supposed to build projects. The hard part is that there’s a huge gap between following a tutorial where somebody else has already made every decision, and building a legit project from scratch.

So in this guide I’m going to walk you through the actual process I use to build AI systems, from figuring out what’s worth building in the first place, all the way through testing, deployment, and leveraging it for job opportunities once it’s live.

This is the same basic process I’ve used building production AI and ML systems at companies like Amazon, but I’m going to break down every step assuming you’ve never built an AI product before.

The workflow at a glance

  1. Know why you’re building. Learning, demonstrating skills, or getting real users.
  2. Pick a problem you understand. Then work backwards to the technology.
  3. Scope it before you build. Who it’s for, constraints, data, success metrics, and whether AI even makes sense.
  4. Work with AI the right way. Spec-driven development, so you make the decisions, not Claude.
  5. Set up the foundations. Data storage, API keys, environments.

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Marina Wyss
Marina Wyss

Written by Marina Wyss

🧠 AI explainers + tech careers without the hype. 🌱 Productivity and personal growth. 📍www.marinawyss.com

Data Science Collective
Data Science Collective

Published in Data Science Collective

Advice, insights, and ideas from the Medium data science community