Customer Success

Karumi (YC F25); New York (NY); On-site; USD 80,000 - 100,000; Full time

Job summary

Karumi (YC F25) in New York seeks a Customer Success Manager to own the post-sale journey, ensuring clients quickly realize value from the AI product demos. Responsibilities include onboarding new customers, driving adoption, and managing renewals.

The ideal candidate has over 2 years of experience in customer success at a B2B SaaS company, combines technical skills with strong communication, and thrives in a fast-paced environment. Experience in early-stage companies and familiarity with sales tooling is a plus.

Qualifications

• 2+ years in customer success, onboarding, or implementation at a B2B SaaS company.
• Technical enough to configure a product and troubleshoot integrations.
• Ability to stay calm in challenging situations.

Responsibilities

• Onboard new customers to ensure quick value realization.
• Drive adoption and monitor demo performance.
• Manage renewals and identify growth opportunities.
• Provide customer feedback to product and engineering teams.

Skills

Customer Success

B2B SaaS Implementation

Technical Troubleshooting

Clear Communication

Job description

About Karumi

Karumi is a Y Combinator–backed (F25) company building the first agentic product-demo platform. Our AI agent joins live video calls, runs personalized product demos, reasons through prospect questions, clicks around the product in real time, qualifies leads, and routes them into the CRM — 24/7, in any language. We’re a small, fast-moving team replacing a slow, manual part of the sales motion with autonomous agents.

We hire ahead of need and screen carefully. Expect a sharp bar, a fast process, and real ownership from day one.

What You’ll Do

Own the post‑sale journey: get customers live on Karumi quickly, prove value fast, and turn early adopters into renewals and references. You’re the person making sure the AI demo agent actually performs in each customer’s world.

Responsibilities

• Onboard new customers — connect their product, train the agent, get demos running.
• Drive adoption, monitor demo performance, and step in before issues become churn.
• Own renewals and expansion; spot accounts ready to grow.
• Be the voice of the customer back to product and engineering.

You're a Fit If You

• Have 2+ years in CS, onboarding, or implementation at a B2B SaaS company.
• Are technical enough to configure a product and troubleshoot integrations.
• Communicate clearly and stay calm when something breaks.
• Like building the CS function, not just running a script someone gave you.

Nice to Have

Early‑stage experience, familiarity with sales/GTM tooling, multilingual.