Own end-to-end enterprise customer integrations, including architecture, configuration, testing, troubleshooting, and optimization of REST API, webhook, SSO, and SFTP integrations. Lead customer-facing technical discussions, resolve escalations, mentor teammates, improve documentation and reusable integration patterns, and collaborate with Customer Success, Product, Engineering, and Support. The role requires strong analytical, communication, consulting, and root-cause troubleshooting skills in a hybrid startup environment.