Systems Administrator - III

We are seeking an experienced, analytical, and reliable Systems Administrator III specializing in IBM MQ messaging middleware infrastructure. In this role, you will be responsible for the end-to-end installation, configuration, maintenance, security management, and optimization of enterprise queue managers and message flows across distributed platforms.

This is a senior technical role requiring deep expertise in messaging middleware architecture, high availability (multi-instance queue managers), clustering, and advanced troubleshooting. You will partner closely with application development teams, network engineers, and security groups to ensure secure, highly reliable message delivery across the enterprise. If you excel at diagnosing complex connectivity issues, tuning performance, and maintaining mission-critical server infrastructure, we want to hear from you., Installation & High Availability Configuration Software Deployment: Install, configure, and upgrade IBM MQ software across diverse operating systems (Windows, Linux, UNIX, AIX). Architecture Setup: Design and set up queue managers, queues, channels, listeners, and robust clustering solutions. Failover & HA: Implement multi-instance queue managers and high availability architectures to ensure continuous business operations. Administration, Monitoring & Tuning System Health: Monitor queue depths, channel statuses, and overall system performance metrics; proactively manage message flows and resolve build-ups. Performance Optimization: Tune memory allocation, resource usage, and channel configurations; analyze logs and identify performance bottlenecks. Patch Management: Execute regular system audits, apply software patches, and manage message retention and dead-letter queue strategies.

Security Management & Compliance Access Control: Implement authentication, authorization controls, and Channel Authentication Records (CHLAUTH). Encryption Standards: Configure SSL/TLS certificates and secure communication protocols to ensure compliance with enterprise security policies. Troubleshooting & Support Incident Resolution: Diagnose complex connectivity issues, investigate message delivery failures, and analyze system error logs (AMQERR01.LOG, FDC files). Cross-Functional Collaboration: Partner with application teams to define integration requirements, resolve deployment issues, and establish messaging best practices.

Education: Bachelor’s degree in Computer Science, Information Technology, or a related technical field (or equivalent professional experience). Experience Baseline: Minimum of 5+ years of dedicated professional experience in systems administration, infrastructure support, and enterprise messaging middleware. Technical Mastery: oExpert-level administration experience with IBM MQ across Windows, Linux, and Unix/AIX environments. oProven hands-on experience configuring high availability, clustering, and multi-instance failover architectures. oStrong working knowledge of IBM MQ security configurations, including SSL/TLS certificates and CHLAUTH rules. oProficient troubleshooting skills, log analysis, and performance tuning capabilities. Core Competencies: Strong analytical and problem-solving abilities; excellent documentation and communication skills; capability to coordinate across cross-functional engineering teams.

For temporary assignments lasting 13 weeks or longer, AllSTEM Connections is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.

We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.

AllSTEM Connections participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program. _Participation_Poster_ES.pdf

We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.