Senior Integration Engineer

Concept Solutions, LLC (CS) is seeking an experienced Senior Integration Engineer to support a mission-critical application modernization program for a Department of War (DoW) customer.

This initiative will modernize and streamline access across a portfolio of production applications by establishing a unified platform with single sign-on, a common user experience, and a repeatable approach to integrating applications.

As a Senior Integration Engineer, you will play a key role in maintaining and enhancing the integration services that connect these applications. You will work with API gateways, legacy interfaces, and modern integration patterns to ensure reliable communication between systems while supporting the continued operation of existing mission-critical applications.

• Maintain privileged access to integration services and API gateways connecting the application portfolio.
• Troubleshoot and resolve integration incidents, defects, and connectivity issues to ensure system reliability and continuity.
• Maintain integration contracts, correlation identifiers, and acknowledgment mechanisms across connected systems.
• Establish and maintain OpenAPI contracts at the platform gateway to standardize existing integrations.
• Support the platform team's data feeds and integration requirements.
• Work with legacy interfaces and existing application integrations to support modernization without disrupting ongoing operations.