To efficiently screen sales reps, hold a group interview where candidates perform a pre-sent script. Then, provide live feedback and ask them to try again. This quickly assesses their preparation, ego, and coachability.

After probing a candidate's past, 'flip the table' and present them with a current, real-world problem your company faces. This reveals their curiosity, analytical skills, and ability to engage with a new challenge on the spot, shifting from their prepared stories to raw problem-solving.

To hire for traits over background, Mark Kosaglo suggests testing for coachability directly. Run a skill-based roleplay (e.g., discovery), provide specific feedback, and then run the exact same roleplay again. The key is to see if the candidate can actually implement the coaching, not just if they are open to receiving it.

A common hiring mistake is prioritizing a conversational 'vibe check' over assessing actual skills. A much better approach is to give candidates a project that simulates the job's core responsibilities, providing a direct and clean signal of their capabilities.

Instead of asking hypothetical questions, present senior candidates with a real, complex problem your business is currently facing. The worst case is free consulting; the best case is finding someone who can implement the solution they devise.

For leadership roles, the interview itself is a critical test. If the candidate isn't teaching you something new about their function, it's a red flag. A true leader should bring expertise that elevates your understanding. If you have to teach them, they will consume your time rather than create leverage.

When hiring a sales leader, founders often fall for the most enthusiastic candidate. Ben Horowitz advises picking the one who rigorously qualifies the opportunity—questioning the product and customers. This demonstrates the critical discovery skills they'll apply when selling.

For high-level leadership roles, skip hypothetical case studies. Instead, present candidates with your company's actual, current problems. The worst-case scenario is free, high-quality consulting. The best case is finding someone who can not only devise a solution but also implement it, making the interview process far more valuable.

Ineffective interviews try to catch candidates failing. A better approach models a collaborative rally: see how they handle challenging questions and if they can return the ball effectively. The goal is to simulate real-world problem-solving, not just grill them under pressure.