The Interim Management Trap: Why Your Best ICs Fail as Temporary Leaders

Leadership expert Rands explains the systemic failures that happen when high-performing individual contributors (ICs) are moved into interim management roles. His core argument is that leadership is not a temporary task to add to an existing technical role, but a complete career reset. The common failure is not a lack of technical skill, but a misunderstanding of the job itself. New managers often try to balance two roles while failing to establish a new social contract with their team. This analysis is useful for leaders who view interim management as a low-risk experiment; it shows that the hidden costs, such as team confusion, diluted focus, and the potential loss of top talent, are higher than the convenience of a quick internal promotion.

The Hidden Cost of the Dual-Role Fallacy

When an IC becomes an interim manager, the most common failure is the attempt to keep doing their previous technical work. The system breaks because the new manager tries to do two jobs poorly rather than one job well. This is not just a time-management issue; it is a failure to set clear expectations.

As Rands notes, the biggest failures start with a refusal to delegate. The new manager assumes they can still code while managing, which leaves the team without a leader and the codebase without a dedicated engineer.

"Most people don't [delegate], they're like cool, well I'm gonna do this and still be an engineer. That's what they think because I think that's the right thing it's like no, and maybe there's extenuating circumstances you can only do this 50% time because we still need to be doing these all everything. Super bad, that's a really bad idea."

-- Rands

The result is a vacuum of information. Because the new manager still acts like a peer, the team loses the clarity needed for performance reviews and strategic direction. When this transition is not managed well, the team fills the silence with rumors, creating a culture of distrust that lasts even after a permanent manager is hired.

The Three-Year Competency Gap

Rands suggests a three-year rule for leadership roles: it takes three years to become truly competent at each level, whether moving from IC to manager, manager to director, or director to VP. The danger of an interim role is that it encourages the belief that leadership can be tested in a single quarter.

This creates a blind spot. The interim manager, lacking experience in people management, often resorts to hot air by mimicking the decisive, top-down style of a fictional leader like Chili Palmer from Get Shorty. They believe that because they are in charge, they must dictate outcomes.

"I think a lot of humans see that in new managers and they just kind of go they kind of go like, huh? Kind of warm in here. I wonder why he's still talking a lot. Get warm. It's not hot air."

-- Rands

This persona is a dangerous shortcut. When new managers use charisma to mask a lack of experience, they lose the ability to build genuine trust. The team recognizes the performance for what it is: an attempt to exert authority without substance.

Mapping the Lateral Ecosystem

A common mistake in the transition to management is ignoring lateral relationships. New managers often focus only on their team while ignoring the cross-functional dependencies that drive output.

Rands highlights that a manager's early warning system is built through consistent, weekly investment in peers like designers, infrastructure leads, and program managers. When these relationships are ignored, the manager becomes isolated. They lack the context to understand broader organizational pressures, leading to decisions that seem logical in a vacuum but fail when integrated into the company.

Key Action Items

• Define the Transition: If you are appointing an interim manager, provide a clear reason and timeline to the team. Without this, you invite gossip. This is a cost you must pay upfront.
• Audit Your Time: If you are the new interim manager, stop trying to do your old job. You cannot do two jobs poorly. If the old role is critical, hire a backfill or reduce the team's scope.
• Prioritize One-on-Ones: Treat weekly one-on-ones with your team as non-negotiable. They will feel awkward at first because the power dynamic has shifted, but this is the only way to build the trust required to lead.
• Map Your Lateral Dependencies: Identify the peers whose teams your success depends on. Schedule recurring 1:1s with them. If your calendar has no one on this list, you are operating in a silo.
• Adopt a Three-Year Mindset: Accept that you will be bad at this for a long time. Humility is a competitive advantage; admitting you do not know the answer is often more effective than faking it with executive charisma.
• Evaluate the Why: Reflect on whether you actually want the management path. If you do, seek a fresh start on a different team. Managing your former peers is a high-difficulty move that often results in permanent confusion regarding your role.