Senior Systems Software Engineer

Northwestern Mutual

Milwaukee, WI CorporatePosted Jul 15, 2026 · 1h ago$119k – $178k

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Full-time$119k – $178kSeniorOn-site

About this role

Northwestern Mutual is seeking a Senior Systems Software Engineer with deep experience in IBM z/OS mainframe environments. This role focuses on platform engineering and operations, requiring hands-on administration, system-level solution design, and automation. You will mentor peers, drive continuous improvement, and ensure the reliability and security of mission-critical mainframe workloads.

What we are looking for

Mentor and enable peers on the mainframe platform
Apply engineering methodologies to z/OS system-level solutions
Support mission-critical mainframe workloads with automation
Identify and resolve complex system-level problems
Drive continuous improvement in reliability, availability, and performance
Develop and maintain disaster recovery strategies

Skills mentioned

AWSLinuxCI/CD

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Senior Systems Software Engineer at Northwestern Mutual | Quick Apply