Marty Cagan on Empowered Engineers in the AI Era: Push Back, Then Prototype

Key points

1. 1

   Engineers are the best source of innovation

   Cagan says engineers are the best single source of innovation, ahead of customers, executives and product managers. He says this has been known for decades. Engineers work with the enabling technology every day, so they are first to see what just became possible. He points to the AI companies whose new products people love: engineers invented them. He admits a bias, since he worked as an engineer for the first 10 years of his career.

   “the best single source of innovation is not our customers, it's not our executives, it's not our product managers. It's the engineers.”

2. 2

   Sprint planning is too late

   In a feature factory, the roadmap is set and engineers execute it. In a product company, Cagan says, the job is to work out what to build as well as to build it. An engineer at a consultancy builds what the client asks for. An empowered engineer cares as much about what gets built as about how it gets built.

   “If the first time the engineers are seeing the idea is at sprint planning, you have failed.”

3. 3

   Engineers should push back

   Cagan gives two reasons for an engineer to say no to a feature. The feature may be a bad idea, such as copying a competitor without knowing whether anyone uses it. Or the product manager has not explained why it is a good one. An engineer who builds only because they were told to is a mercenary, he says. Pushback is how a product team corrects itself, and a tech lead has to be comfortable doing it.

   “we do not want the engineers to build it because they were told to. That's a mercenary. We want them to build it”

4. 4

   Prototype the idea and show it

   Engineers in companies without real product managers can still act, Cagan says. Talk to the head of sales, then build a prototype of a better solution in Claude Code, Lovable or whatever tool you use. The prototype exists to illustrate the idea, and nobody ships it. Executives ignore slide decks and talk, he says, and respond to a prototype. Showing it to a customer is better still.

   “then the secret weapon that anybody can do today, not just engineers, is when you get an idea of a better solution, just prototype it.”