This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Legacy Support Engineer based in United States. This role is focused on maintaining the stability, performance, and reliability of critical legacy mainframe database environments supporting public sector operations.You will provide hands-on production support across IDMS and Db2 z/OS environments, diagnosing complex issues and driving effective resolutions.The position combines database administration, system troubleshooting, performance tuning, batch operations, and production workflow management.You will work closely with distributed technical teams to implement enhancements, patches, maintenance activities, and modernization initiatives.The role requires strong ownership, analytical thinking, and the ability to operate independently while supporting high-visibility enterprise systems.You will also contribute to incident management, root-cause analysis, technical documentation, and long-term remediation planning.This is a fully remote opportunity for an experienced mainframe professional who can help ensure reliable operations while supporting the evol... Click Apply to read the full job description.