Customer Success Manager, Enterprise

About Portside Portside is a leading provider of cloud-based software solutions for the global aviation industry. Our platform powers critical operations across business aviation, regional airlines, and aircraft leasing & finance, helping over 1,000 aviation organizations streamline operations, improve decision-making, and operate more efficiently. Backed by leading technology investors Vista Equity Partners and Insight Partners, Portside is entering an exciting phase of growth. We are expanding our platform, investing in AI driven innovation, and building a global team focused on shaping the future of aviation technology. Job Summary Portside is seeking an experienced Enterprise Customer Success Manager to own a portfolio of large, enterprise, aviation accounts. You will guide each customer through a defined engagement model, from a structured onboarding hand-off through ongoing success and operational reviews, to renewal and expansion, delivering measurable value and building durable executive relationships along the way. This role partners closely with Sales, the onboarding team, Renewal Specialists, Product, and Marketing to execute a consistent, high-touch engagement motion a…