This guide details how to recruit every crew member in Citizen Sleeper 2. Remember, while recruitment is usually straightforward (accepting their offer), success in Contracts or events can influence outcomes. You can lose crew members through bad luck or miss opportunities entirely. Note: Comment if you find alternative recruitment methods!
Crew Member Recruitment Guide:
Serafin and Bliss: These two join automatically. Serafin is generally unavailable for Contracts. No achievements are tied to their recruitment.

Juni: Initially a temporary crew member on Hexport. Recruit her permanently by visiting Helion Gate after completing the Idle Minds clock at Solheim Records. Complete the subsequent Contract and agree to her return. Recruiting Juni unlocks the Data Archaeologist achievement.

Yu-Jin: Found on Far Spindle after completing the Getting Wracked clock at Gaia’s Gyre (order a Wrack four times, costing 16 Cryo). Complete his Contract to recruit him. Unlocks The Freelancer achievement.

Luis: During the Aphelion Beacon contract, choose to leave Yu-Jin behind to recruit Luis. Unlocks the Signalchaser achievement.

Kadet: Encountered on Far Spindle after completing the Spindle Core clock. This unlocks a new drive and Stripline Express. Complete the subsequent tasks, then visit the Scatteryards to recruit Kadet. Unlocks The Spindlejack achievement.

Femi & Nia: You can only choose one. You'll meet Nia on Hexport and Femi on both Hexport and Floatsam. Complete Femi's Contract on Floatsam to ensure Nia's safety, then choose between them. Recruiting Femi unlocks Big Brother; recruiting Nia unlocks Little Sister.

Flint: After your first visit to Olivera, a Contract leads to investigating Flint's disappearance. A subsequent Contract requires quick action to set a trap. Follow Xander to rescue Flint and recruit him. Unlocks the Fugitive achievement.

This completes the guide to recruiting every crew member in Citizen Sleeper 2.