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

chatarmin.com GmbH; Wien; On-site; Vertraulich; Full time

Benefits offered by this job

Uncapped bonus

Growth opportunities

Competitive base salary + commissions

Job summary

Chatarmin GmbH in Vienna is seeking a Customer Success Manager / Key Account to own 80-120 ecommerce client portfolios from day one. You’ll manage onboarding, support, upsell, and the full lifecycle, acting as a strategic partner to maximize client outcomes.

Ideal candidates thrive under pressure, work autonomously, read JSON and API docs, and communicate fluently in German and English. Relocation to Vienna is expected for onsite work, with uncapped commissions and rapid growth opportunities.

Qualifications

• Fluent German and English required (written and spoken).
• Ability to read and understand JSON and API documentation.
• Excellent communication and organizational skills.
• Self-managed, proactive, and able to work under pressure.

Responsibilities

• Manage 80–120 client portfolios autonomously.
• Own onboarding, support, upsell, and full lifecycle.
• Directly resolve client issues without escalation.
• Act as strategic partner to maximise client value for Chatarmin.
• Contribute to product feedback loops and operations.
• Coordinate upsells and cross-sells with product/solutions engineering.

Skills

Fluent German

Fluent English

Strong communication

Organizational skills

Customer onboarding

Tools

JSON & API docs

Job description

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?

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)