Support & Maintenance Engineer; L2​/L3

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization

We are currently seeking a Support & Maintenance Engineer (L2/L3) to join our team in Frisco, Texas (US-TX), United States (US).

We are seeking an experienced Application Support & Maintenance Engineer (L2/L3) with strong expertise in Enterprise Service Bus (ESB), Open Shift Container Platform, API Management, and Integration Services. The candidate will be responsible for providing production support, maintenance, monitoring, troubleshooting, and continuous improvement of integration platforms, APIs, middleware services, and containerized applications.

This role requires hands-on experience supporting enterprise integration ecosystems, ensuring high availability, performance, security, and reliability of business-critical interfaces and services. The candidate will work closely with application, infrastructure, cloud, database, security, and business teams to support a 24x7 production environment.

Location : US/ Remote

• Application Support & Incident Management
• Provide L2/L3 production support for ESB, API integration, and Open Shift-hosted applications.
• Monitor integration services, APIs, message queues, and middleware components.
• Analyze and resolve incidents, service requests, and production issues within SLA commitments.
• Perform root cause analysis (RCA) and implement preventive measures for recurring issues.
• Coordinate with development, infrastructure, cloud, database, and business teams during major incidents.
• Support critical business interfaces and ensure uninterrupted application availability.
• ESB & Integration Support
• Support enterprise integration platforms and middleware services.
• Monitor and troubleshoot message flows, service orchestration, routing, transformations, and connectivity issues.
• Diagnose integration failures across applications, databases, third-party systems, SaaS platforms, and APIs.
• Support interface reprocessing, message retries, and failure recovery procedures.
• Ensure successful execution of scheduled integration workflows and batch processes.
• Work with vendors and application teams to resolve integration-related issues.
• API Support & Management
• Monitor API performance, availability, response times, and error rates.
• Troubleshoot REST and SOAP API integrations.
• Support API Gateway configurations, security policies, throttling, and access controls.
• Analyze API logs and transaction traces for issue diagnosis.
• Manage API lifecycle activities including deployments, versioning, and decommissioning.
• Support API authentication mechanisms including OAuth, JWT, SAML, and API Keys.
• Open Shift Platform Support
• Support containerized applications deployed on Red Hat Open Shift.
• Monitor Open Shift clusters, pods, name spaces, routes, and application health.
• Troubleshoot container failures, deployment issues, and platform-related incidents.
• Support application deployments, rollbacks, scaling activities, and platform upgrades.
• Collaborate with platform engineering teams for capacity planning and performance optimization.
• Ensure compliance with security and operational standards.
• Change & Release Management
• Participate in release planning, deployment validation, and production readiness reviews.
• Support CI/CD deployment activities in production and non-production environments.
• Implement approved changes following organizational change management processes.
• Conduct post-deployment validation and rollback support when…