CustomerSuccessManager

Harmonic Security lets teams adopt AI tools safely by protecting sensitive data in real time with minimal effort. It gives enterprises full control and stops leaks so that their teams can innovate confidently. We are led by cybersecurity experts and backed by top investors including N47, Ten Eleven Ventures, and In-Q-Tel. We have achieved early traction and product-market fit with a world-class team, and we are now focused on building a category-defining company. This is your opportunity to join us early and shape not just a product, but a category. HOW WE WORK: AI-FIRST BY DESIGN Harmonic exists to help enterprises adopt AI safely and at scale. We hold ourselves to the same standard. Everyone at Harmonic actively uses AI tools to do their best work, from research and writing to building processes and automating workflows. We expect every new hire to bring curiosity about AI and a willingness to use it to work smarter, faster, and more creatively. For some roles, that means tinkering and staying open to new tools. For others, it means building entirely new systems with AI at the core. We'll be clear about what we expect for each role, and we'll give you the tools and support to get there. ABOUT THE TEAM You will report to the Director of Customer Success and work closely with Sales, Product, and Engineering team leaders. Our Customer Success team delivers a world-class experience for every customer. We don't believe in one-size-fits-all. Instead, we take a deep partnership approach to help customers realize their vision and achieve meaningful business outcomes through Harmonic. ABOUT THE ROLE As a Customer Success Manager at Harmonic, you'll own the full customer lifecycle from onboarding through renewal for a portfolio of enterprise accounts. You'll be a trusted advisor to both executive and technical stakeholders, building the kind of deep partnerships that drive adoption, retention, and long-term value. This role calls for someone who is genuinely comfortable ope