A startup advisor is a strategic guide to founders, providing expertise, introductions, and operational advice as a company grows. Advisors fill skill gaps: product strategy, fundraising, sales, hiring, board-level thinking. Unlike employees (who take salaries and equity), advisors are compensated primarily via equity (0.1%-1%) plus occasional cash (if the startup can afford it). Advisors commit to regular engagement: monthly or quarterly calls, introductions to investors/customers, and strategic input. It's a portfolio role: experienced operators maintain 5-15 advisory positions, each of which might yield equity upside in 7-10 years. Advisory roles are financial and intellectual leverage. A 0.5% equity stake in a $10M Series A company is worth ~$50k upfront and could be worth $5M+ if the company exits at $1B. A portfolio of 10-15 advisory positions with different outcomes can generate substantial wealth. Beyond money, advising is intellectually rewarding: you influence multiple companies, shape founders, and see trends across the market. For operators with startup experience, advising is a high-ROI role; you scale impact without day-to-day operational burden.