AI is restructuring engineering teams. A future model involves a small group of senior engineers defining processes and reviewing code, while AI and junior engineers handle production. This raises a critical question: how will junior engineers develop into senior architects in this new paradigm?

The traditional, linear handoff from product (PRDs) to design to dev is too slow for AI's rapid iteration cycles. Leading companies merge these roles into smaller, senior teams where design and product deliver functional prototypes directly to engineering, collapsing the feedback loop and accelerating development.

To familiarize engineers with agentic coding workflows, Brex created a new interview process that requires AI tool usage. They then had every current engineer and manager complete the interview, forcing hands-on experience and revealing skill gaps in a practical setting.

A key to OpenAI's innovation is hiring young talent who grew up thinking natively about AI. These individuals "hold the model weights in their brains," enabling creative breakthroughs. The team behind the video model Sora, for instance, has a median age in the low twenties.

When building core AI technology, prioritize hiring 'AI-native' recent graduates over seasoned veterans. These individuals often possess a fearless execution mindset and a foundational understanding of new paradigms that is critical for building from the ground up, countering the traditional wisdom of hiring for experience.

Experience can bring baggage and premature dismissal of ideas. Cisco's CPO advocates for mixing experienced 'pattern recognizers' with inexperienced team members who approach technologies like AI with unconstrained, companion-like thinking, unlocking novel use cases.

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.

Contrary to the belief that AI architecture is only for senior staff, Atlassian finds that "AI native" junior employees are often more effective. They are unburdened by old workflows and naturally think in terms of AI-powered systems. Senior staff can struggle with the required behavioral change, making junior hires a key vector for innovation.

Instead of replacing junior hires, AI creates a new opportunity: empower high-agency junior talent with powerful AI tools. This strategy creates a force-multiplier effect, allowing a small, specialized team to achieve outsized results by giving them "nuclear power" to tackle complex problems.