Technical Customer Success Manager (m/f/d)

We're looking for someone who’s excited to build from scratch, not just to manage.
As our first Post-Sales hire, you’ll take end-to-end ownership of the full customer journey — from technical onboarding to long-term success. You’ll work closely with our customers (mainly municipal utilities), help shape how they use our solution in the field, and lay the foundation for our Customer Success function as we scale. If you enjoy working with data — cleaning, transforming, and turning it into something useful — this role is for you. Your impact will be direct, visible, and meaningful.

Key Responsibilities 🎯

• Lead technical onboarding – Support customers in setting up their data, using simple scripts and tools (e.g. Python, Excel). You'll handle formats like CSV or geodata, but don’t worry — this isn’t a software engineering role.
• Be the face of atmio – Build strong, trust-based relationships across all levels — from field technicians to senior executives — by communicating with empathy, clarity, and credibility.
• Wrangle and refine customer data – Reshape, complete, and clean up raw datasets to make them ready for analysis and integration — even when they come in less-than-perfect condition.
• Own the full customer journey – Take end-to-end responsibility for all post-sales activities: onboarding, adoption, retention, account health monitoring — and spotting opportunities for upselling along the way. You’ll coordinate these efforts like a project manager — ensuring timelines are met, stakeholders are aligned, and nothing falls through the cracks.

This role is right for you if... ✨

• You combine project management skills, technical curiosity, and a human touch — keeping both customer needs and data quality in focus.
• You are a strong communicator, organized, and excel at managing multiple projects while maintaining attention to detail
• You roll-up your sleeves and you are comfortable in high-pace environments with quickly changing tasks and requirements
• You are eager to step into a role with significant autonomy and accountability, where you can directly influence company growth
• You are motivated by the opportunity to make a positive impact on the planet 🌍

Requirements

Skills & experience you will need 💪

• Prior experience in a customer-facing, project-based role — ideally with a technical or data component (e.g. consulting)
• Basic knowledge of Python and confidence working with data in Excel (e.g. cleaning, transforming, reformatting datasets)
• Excellent communication and interpersonal skills — you build trust across all levels, from field technicians to senior stakeholders
• Strong organizational abilities and the capacity to manage multiple customer projects in parallel
• Fluency in German and English is essential

• Screening Call: An initial discussion to assess the fit between the vacancy and your qualifications and career interests.
• Department Call: A deep-dive with the specific team you're applying to join.
• Practical Case Study: An opportunity for you to showcase your skills in a real-world scenario.
• Cultural Fit Call: A conversation to determine how well our values and your aspirations align.
• Reference Check: We reach out to your provided references to learn more about you.