
AI's unglamorous wins for developer productivity with Tara Hernandez from MongoDB
From Engineering Unblocked by Swarmia
February 11, 2026 · 48 min · Season 3 · Episode 30
About this episode
Tara Hernandez discusses her insights from 18 months of AI experimentation at MongoDB, focusing on developer productivity and the impact of AI.
In this episode, Tara Hernandez shares what 18 months of rigorous AI experimentation taught her at MongoDB — including why the initial results showed negative ROI, and where her team eventually found the real productivity wins. Tara explains how AI saved developers an hour a week on coding but had zero impact on product velocity, why the unglamorous outer loop improvements (Slack bots, log analysis, ticket generation) deliver bigger impact than code generation, and how developer productivity ultimately comes down to information flow between humans. She also gets into why developer experience matters more now than during the hiring frenzy, and why curiosity is what defines good developers. (0:00) Introduction (1:04) How Tara became MongoDB’s first VP of Developer Productivity (6:42) Teaching Pixar how to do software development in 2002 (11:06) Tara's three pillars of developer productivity: tools, communication, and process (18:52) How the internet changed infrastructure from “not real engineering” to essential (22:00) MongoDB’s 18-month AI journey: from skepticism to scientific measurement (25:11) The surprising truth: AI saved coding time but had zero impact on velocity (27:03)…
People in this episode
Guest: Tara Hernandez
Topics covered
- AI in development
- developer productivity
- information flow
- outer loop improvements
- developer experience
Keywords
- AI
- developer productivity
- MongoDB
- coding time
- information flow
- outer loop
- developer experience
Mentioned in this episode
Organizations: MongoDB, Pixar
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