Provide L2/L3 support for Liaison integration platforms and managed services.Monitor integration workflows, EDI transactions, API interfaces, and data exchange processes.Troubleshoot transaction failures, mapping issues, communication errors, and connectivity problems.Support onboarding of new trading partners and integration endpoints.Manage incidents, service requests, changes, and problem tickets through ServiceNow.Perform root cause analysis for production issues and implement corrective and preventive actions.Support platform upgrades, patches, maintenance activities, and release deployments.Collaborate with business users, application teams, vendors, and external partners to resolve integration-related issues.Monitor system health and proactively identify performance bottlenecks and operational risks.Maintain integration documentation, support runbooks, operational procedures, and knowledge articles.Ensure compliance with security, audit, and governance requirements.Participate in on-call support and major incident management activities as required.