Description We are looking for a skilled IBM i Infrastructure Systems Administrator to join our team in Dayton, New Jersey. In this role, you will be responsible for maintaining and optimizing Linux and IBM i environments, ensuring system reliability, security, and seamless integration with business applications. The ideal candidate will bring deep expertise in legacy systems and modern technologies, along with a proactive approach to troubleshooting and system enhancements. Responsibilities: - Manage and support Linux and IBM i system environments, ensuring their reliability and performance. - Diagnose and resolve issues in legacy systems, including performing repairs and tuning for optimal performance. - Coordinate hardware installations, upgrades, and migrations to maintain system efficiency. - Develop and implement security protocols to safeguard systems and ensure compliance with data protection standards. - Configure and optimize network connectivity, protocols, and performance for IBM i and AS/400 platforms. - Design and deploy custom integrations between legacy systems and modern applications or infrastructure. - Provide technical expertise for system integration, security enhancements, and legacy application support. - Document processes, security measures, and workflows to ensure operational consistency. - Monitor system performance and recommend improvements to enhance efficiency and security. - Collaborate with cross-functional teams to align technology solutions with business needs. Requirements - Proven experience in configuring and maintaining Linux and IBM i systems, including hardware. - Strong understanding of server architecture, legacy environments, and networking fundamentals. - Expertise in implementing security measures such as user access controls, encryption, and audit compliance. - Proficiency in networking technologies for IBM i systems, including protocols like TCP/IP and firewall configurations. - Experience with custom integrations, such as connecting AS/400 systems to APIs, databases, or cloud platforms. - Ability to troubleshoot complex issues related to hardware, networking, and security. - Excellent analytical and problem-solving skills with strong attention to detail. - Familiarity with system monitoring tools, scripting, and integration frameworks is preferred. Technology Doesn't Change the World, People Do.® Robert Half is the world's first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles. Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information. © 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking "Apply Now," you're agreeing to Robert Half's Terms of Use (https://www.roberthalf.com/us/en/terms) .