Customer Success Manager (m / f / d) B2B Software fully remote

Your mission

• Own the onboarding journey for new B2B partners, ensuring smooth integration, training, and activation of Tunz’s eSIM and connectivity services.
• Serve as the primary customer contact throughout the lifecycle — managing renewals, performance reviews, and proactive success planning.
• Drive adoption and engagement by understanding each partner’s goals and aligning Tunz capabilities to deliver measurable value.
• Monitor account health using usage, revenue, and engagement metrics; take action to prevent churn and drive growth.
• Collaborate cross‑functionally with product, sales, and technical teams to resolve issues and enhance customer experience.
• Gather partner feedback and share insights with internal teams to inform product improvements and feature prioritization.
• Represent the voice of the customer within Tunz, advocating for needs that improve satisfaction, loyalty, and long‑term success.

Your profile

• Proven experience in Customer Success, Account Management, or Partner Management, ideally in B2B SaaS, mobile tech, or connectivity sectors.
• Strong understanding of customer lifecycle management and onboarding processes for enterprise or platform partners.
• Exceptional communication and relationship‑building skills across technical and commercial stakeholders.
• Analytical mindset with the ability to interpret data, track performance, and recommend improvements.
• Comfortable managing multiple global accounts in a fast‑moving, cross‑functional environment.
• Proactive, solution‑oriented, and customer‑first approach to problem solving.
• Bachelor’s degree required.
• Fluent in English; additional regional languages are an advantage.

Why Tunz?

• Flexible work arrangement according to your individual needs
• Competitive salary
• Working on international level, internal & external
• Be part of a fast growing tech business

Tunz, part of DT One, is redefining the way businesses deliver mobile connectivity. Our B2B eSIM and digital connectivity platform empowers partners - from super apps and digital wallets to travel tech and telecom innovators - to offer seamless, app‑driven mobile data solutions in over 150 countries.

We help our partners drive growth and engagement through embedded connectivity, enabling users to stay connected anywhere, without contracts or physical SIMs. Our kickback rewards, peer‑to‑peer data marketplace, and reseller solutions create new revenue streams and customer touchpoints that keep partners ahead in a competitive digital landscape.

Join us in shaping the future of global mobile connectivity — helping businesses unlock instant, borderless data access for their customers, anytime, anywhere.

About us

Since 2017, we’ve been at the forefront of cutting‑edge solutions and services that leverage the power of eSIM and blockchain, forming partnerships with leading telecommunication companies and experts worldwide. To continue our vision, DENT Wireless will focus on growth by enabling businesses to offer mobile data to their customers. DENT Wireless will drive a future where mobile data is provided to customers where they need it - in travel apps, shopping apps, or secure mobile data connectivity offered with a bank account.

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