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

Title: Key Account Customer Success - B2B SaaS - WIEN - Top Startup - (m/w/d) Location: Vienna, Austria 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. **Our motto: Move fast, break things. Chatarmin to the moon.** 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. ## Aufgaben * 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. ## Qualifikation * 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. ## Benefits * Young, highly motivated team with zero ego. * Speed over politics: If you have an idea, run with it. * Direct impact on the company and the product. * Real growth opportunities - we promote from within. This is a place to build your career. * Earn what you’re worth: We offer good base pay + uncapped commissions. Your output defines your income. * Uncapped Bonus: 0.5%-1.5% on your book of business when <2% GRR MoM. **Interview Process** 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)