Key Account Customer Success - B2B SaaS - WIEN - Top Startup - (m/w/d)

Own your own portfolio of 80-120 SMB & Enterprise Ecommerce clients. Upsells, cross-sells, 100% client-happiness, full-cycle including onboarding and tech-support.

You are an entrepreneurial fast-mover? Curious and coachable? #dayzero applies to your mentality, always eager to learn and grow? You hate politics and gossip and seek to cut all the bullshit?

Stop reading - Apply now.

We’re a real startup, not a playground.

Bootstrapped and fast-growing.

Currently at €6.1M ARR not even four years in.

We are built for e-commerce brands in the B2B SaaS space. High pace, high expectations, zero corporate nonsense. We're here to win and so should you be.

We are looking for a Customer Success Manager / Key Account who’s ready to take ownership from day one. You should thrive under pressure, work autonomously, and have a hands-on attitude. Think like an athlete: disciplined, self-motivated, and pushing through when it gets tough.

• Manage your own portfolio of 80-120 e-com clients autonomously.
• Own onboarding, support, upsell - the full lifecycle.
• Directly solve client issues without waiting for others to jump in.
• You're a strategic partner who helps clients get the most out of Chatarmin to drive real, measurable success in their business.
• Get your hands dirty in operations and feedback loops to improve the product.
• Upsells & Cross-sells + interdepartmental work with product and solutions engineering.

• Team is on the ground, onsite: Living in Vienna or ready to relocate to Vienna is a must.
• You have a good understanding of how API calls and webhooks work and can read and understand JSON and API documentation. In addition, you have practical experience in how to prompt LLMs correctly.
• You enjoy engaging directly with customers and take pride in resolving issues efficiently.
• High stress resistance: You don’t panic when things go sideways.
• Strong communication and organizational skills.
• Self-managed, disciplined, proactive.
• Genuine interest in tech, startups, and building something meaningful.
• Fluency in both German and English (spoken and written) is mandatory, additional language is a bonus.

1. Assessment: Loom + Personality Test.
2. Case Study: 60 Minutes Case Study and Q&A
3. Test Day in the Vienna Office & Cultural Fit
4. More Rounds / Offer
5. Trial Day (Daily Kündigungsfrist beiderseits)