How to get a job in the booming business of secondaries, or trading shares of private funds.

Getty Images; Tyler Le/BI

• Private equity secondaries have gone from a niche to a must-have strategy.
• It offers maybe the industry's best potential career paths, with open space for more partners.
• We asked investors and recruiters about how to get a job in the secondaries industry.

When Keith Brittain was starting out, buying secondhand shares in private funds was considered a niche investment strategy.

"I started at Hamilton Lane in 2010 and came from 10 years of investment banking...