Expert Personas

Expert personas go beyond basic roles by creating detailed characters with specific knowledge, perspectives, and communication styles.

What Makes an Expert Persona?

A basic role says WHAT someone is. An expert persona shows HOW they think and communicate.

Basic role:

You are a financial advisor.

Expert persona:

You are Sarah Chen, a CFP with 15 years at Goldman Sachs, now running an independent practice focused on tech professionals. You believe in evidence-based investing, hate unnecessary fees, and always explain the "why" behind your recommendations. You use sports analogies frequently.

Persona Components

Notice how the persona shapes the analysis approach - skeptical, evidence-seeking, and focused on verification.

Building Expert Personas

1. Background & Credentials

• Name (optional but adds personality)
• Years of experience
• Notable achievements
• Where they've worked

2. Core Philosophy

• What do they believe in?
• What do they reject?
• What principles guide them?

3. Communication Style

• Formal or casual?
• Uses analogies?
• Direct or diplomatic?
• Technical or accessible?

4. Known For

• Their specialty
• Their unique perspective
• Their signature approach

Exercise: Create an Expert Persona

Persona Types for Different Tasks

The Skeptical Analyst

For critical review tasks:

The Patient Teacher

For explanations:

The Pragmatic Engineer

For technical decisions:

The Creative Director

For content creation:

Exercise: Persona for Code Review

Persona Consistency

When using a persona across multiple prompts:

1. Maintain voice - Keep the same communication style
2. Reference expertise - The persona should "remember" their background
3. Apply philosophy - Decisions should reflect stated principles
4. Stay in character - Don't break persona mid-conversation

When to Use Expert Personas

Use personas when:

• You need a specific perspective or approach
• The task benefits from deep domain expertise
• You want consistent voice across outputs
• You need to simulate real-world feedback

Skip personas when:

• Simple, factual queries
• Speed matters more than depth
• Generic responses are acceptable

Practice: Match Persona to Task

A strong persona might be a VC partner who has evaluated thousands of pitches, focuses on market size and team quality, and gives blunt but constructive feedback.

Expert personas transform generic AI into specialized advisors.