Top AI labs struggle to find people skilled in both ML research and systems engineering. Progress is often bottlenecked by one or the other, requiring individuals who can seamlessly switch between optimizing algorithms and building the underlying infrastructure, a hybrid skillset rarely taught in academia.

Simply hiring superstar "Galacticos" is an ineffective team-building strategy. A successful AI team requires a deliberate mix of three archetypes: visionaries who set direction, rigorous executors who ship product, and social "glue" who maintain team cohesion and morale.

To move beyond general knowledge, AI firms are creating a new role: the "AI Trainer." These are not contractors but full-time employees, typically PhDs with deep domain expertise and a computer science interest, tasked with systematically improving model competence in specific fields like physics or mathematics.

Companies once hired siloed 'digital experts,' a role that became obsolete as digital skills became universal. To avoid repeating this with AI, integrate technologists into current teams and upskill existing members rather than creating an isolated AI function that will fail to scale.

Recursion's CEO Najat Khan argues that the key to success in tech-bio is not just hiring scientists and engineers, but cultivating a 'bilingual' culture. This requires scientists who understand AI's limitations and AI experts who appreciate the humility needed for science. This integrated talent and culture is a core competitive advantage that is difficult for larger, more siloed organizations to replicate.

Building a single, all-purpose AI is like hiring one person for every company role. To maximize accuracy and creativity, build multiple custom GPTs, each trained for a specific function like copywriting or operations, and have them collaborate.

The traditional tech team structure of separate product, engineering, and design roles is becoming obsolete. AI startups favor small teams of 'polymaths'—T-shaped builders who can contribute across disciplines. This shift values broad, hands-on capability over deep specialization for most early-stage roles.

Companies mistakenly try to hire one person for both applying AI in products and building the underlying AI infrastructure. These are two distinct roles requiring different skill sets. A VP of Engineering leverages existing AI for efficiency, while a Head of AI builds the core platforms for the company.

For cutting-edge AI problems, innate curiosity and learning speed ("velocity") are more important than existing domain knowledge. Echoing Karpathy, a candidate with a track record of diving deep into complex topics, regardless of field, will outperform a skilled but less-driven specialist.