Principal Software Engineer – IBM z/OS Connectivity

Overview

Build and maintain a Java-based connectivity agent that extends Redwood RunMyJobs onto IBM z/OS. The role covers systems-level integration across mainframe, Unix, and Java environments, including protocols, cryptography, security, and platform bridges.

What you'll do

• Design and develop software for IBM z/OS connectivity and integration.
• Build integrations with JES2/JES3, TSO, SMF, USS, and C/JNI.
• Implement security, authorization, cryptography, and credential-management capabilities.
• Troubleshoot system-level issues across mainframe, Unix, and Java environments.
• Improve solution reliability, performance, security, and scalability.
• Participate in architecture, design, code reviews, testing, and release planning.
• Document protocols, security models, and platform prerequisites.

What you'll need

• 10+ years of professional software engineering experience.
• Strong Java 8+ skills.
• Hands-on IBM z/OS integration experience with JES2/JES3, TSO, RACF/ACF2/Top Secret, SMF, and USS.
• Strong working proficiency in C.
• Experience with low-level network protocols, socket programming, binary framing, encoding conversion, and TLS/keyring security.
• Experience with cryptographic primitives, concurrency, multithreading, and resilient daemon processes.
• Experience with Git, CI/CD, Docker, and Kubernetes.

Nice to have

• IBM Semeru or z/OS Java experience.
• Workload automation product experience.
• Sysplex, z/OSMF REST API, JCL library tooling, z/OS Assembler, or migration and modernization experience.

Details

• Remote in the United States.