(Senior) Customer Success Manager (m/w/d) - Parental Leave Cover (Fixed Term)

Customer Success is central to how charles drives measurable value for Europe’s most innovative brands. As a Senior Customer Success Manager, you will own a portfolio of key accounts and guide customers toward maximizing the outcomes they achieve with our Conversational AI and CRM. You’ll develop account strategies, elevate performance across the customer journey, and help clients turn messaging into a reliable channel for attracting, converting, and retaining customers.

You’ll build trust with senior stakeholders, shape value plans tailored to their goals, and ensure smooth adoption of our product across use cases. Your work will directly contribute to retention, expansion, and long-term partnerships — and you’ll play a key role in strengthening how Customer Success operates across the company.

Join us in Berlin and help accelerate the impact of Conversational AI for leading consumer brands.

• →Drive the onboarding process of new customers by understanding their business objectives and identifying value potential
• →Define use-case strategies and success plans that drive measurable impact for each client
• →Analyze product usage data and translate insights into actionable best practices in conversational marketing and commerce
• →Collaborate closely with Sales, Product, and Marketing to promote customer-centricity and ensure customers receive a unified, high-quality experience
• →Gather structured product feedback and provide clear insights that help improve usability, adoption, and feature development
• →Create compelling customer success stories and share learnings that raise the quality of execution across the team
• →Identify expansion opportunities and manage renewals, ensuring long-term account health and commercial success
• →Track market and industry trends to inform recommendations and strengthen client strategies
• →Continue building your expertise in Conversational AI and help shape internal best practices as you grow

• Bachelor’s degree in Business, Technology, or a related field
• 2+ years in customer-facing roles (Customer Success, Account Management, Consulting, etc.)
• Experience in B2B SaaS or strong domain knowledge in e-commerce/D2C
• High levels of empathy and emotional intelligence to build trust-based relationships with senior stakeholders
• Self-motivated and proactive attitude, with a strong sense of ownership and accountability
• Effectively prioritize tasks and coordinate a portfolio of multiple clients and internal stakeholders
• Clear and confident communicator in German and English
• Tech-savviness (Knowledge of AI/CRM/marketing technology software is a plus)
• Intrinsic motivation, attention to detail, and drive to deliver exceptional results
• Trusted and collaborative team player with a warm, positive, and caring personality

It's better to have a conversation

charles is a conversational AI and CRM that attracts, converts, services, and retains customers via AI agents and marketing automations. charles helps businesses to maximize customer engagement and revenue through conversational channels such as WhatsApp. Brands can reach customers in an interactive way, collect data to expand customer understanding and guide them to targeted offers that convert. charles’ AI Agents deliver hyperpersonalized experiences at scale while ensuring enterprise-grade security and GDPR compliance.

Founded by Kapten & Son co-founder, Artjem Weissbeck, and ex-McKinsey ecommerce lead, Andreas Tussing. charles is backed by Salesforce Ventures, Accel and HV Capital and has raised over EUR 30 million to build the global leader in conversational marketing SaaS for global consumer brands.

Different perspectives bring innovation and richer work environments. We’re committed to building an inclusive company where you always feel like you belong, whatever your age, gender identity, ethnicity, religion, sexual orientation, disability, status or neurodiversity. These values sit at the heart of our hiring process, so we can create a welcoming workplace where everyone feels valued and heard.