<p><strong>Job Description – AIX L3 System Administrator</strong></p> <p> </p> <p><strong>About Us</strong></p> <p>Ensono is a hybrid IT services provider that sees a world in transformation. We understand the world of business has become more complex, layered, and interdependent because we’re enabling the IT infrastructure for that transformation. Our clients are some of the most innovative and forward-thinking companies in the world and we help keep their businesses thriving. With nearly 50 years of experience, we optimize and modernize IT infrastructure by amplifying the power of mainframes and mid-range servers with the agility of cloud. Check us out at <a id="menur7jls" class="fui-Link ___1q1shib f2hkw1w f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1s184ao f1mk8lai fnbmjn9 f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh fhgqx19 f1olyrje f1p93eir f1nev41a f1h8hb77 f1lqvz6u f10aw75t fsle3fq f17ae5zn" href="https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ensono.com%2F&data=05%7C02%7CJennifer.Joseph%40Ensono.com%7Ce601069ca71a4b1335e808dc1c0f8fe5%7Cd483ed84f7bf4078a58ffb250feccf8f%7C0%7C0%7C638416100371036807%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=np2ZJ3pL08ChK%2FWgUB%2FCs1FmCakVjSY5HN%2BqSstWs%2B4%3D&reserved=0" target="_blank">www.ensono.com.</a></p> <p><strong>Job Summary</strong></p> <p>The AIX L3 System Administrator is responsible for expert‑level administration, engineering, and support of IBM AIX and pSeries environments. This role acts as the highest technical escalation point, owning complex troubleshooting, performance tuning, migrations, virtualization, and lifecycle management while ensuring system stability, security, and availability in mission‑critical environments.</p> <p><strong>Key Responsibilities</strong></p> <p><strong>AIX & pSeries Administration</strong></p> <ul> <li> <p>Install, configure, administer, and maintain <strong>IBM AIX servers</strong> in enterprise environments</p> </li> <li> <p>Perform <strong>AIX OS administration, kernel management, and LVM management</strong></p> </li> <li> <p>Manage <strong>user administration</strong>, security policies, password, and identity management</p> </li> <li> <p>Administer system services such as <strong>NIS, NFS, Samba, and printer services</strong></p> </li> </ul> <p><strong>Virtualization & Power Platform</strong></p> <ul> <li> <p>Strong expertise in <strong>PowerVM / VIOS</strong>, HMC, and AIX virtualization</p> </li> <li> <p>Build and administer <strong>VIOS servers</strong></p> </li> <li> <p>Manage <strong>HMC administration and upgrades</strong> (Version 9 & 10)</p> </li> <li> <p>Deep knowledge of <strong>Power8, Power9, and Power10/11 pSeries architectures</strong></p> </li> <li> <p>Expert understanding of:</p> <ul> <li> <p><strong>DLPAR</strong></p> </li> <li> <p><strong>LPM (Live Partition Mobility)</strong></p> </li> <li> <p><strong>Virtual networking</strong></p> </li> <li> <p><strong>Virtual storage</strong></p> </li> <li> <p><strong>SR‑IOV, vNIC adapters</strong></p> </li> </ul> </li> <li> <p>Hands‑on experience with <strong>NPIV</strong> and SAN‑attached storage</p> </li> </ul> <p><strong>Build, Migration & Lifecycle Management</strong></p> <ul> <li> <p>Perform <strong>AIX server build and configuration</strong> using best practices</p> </li> <li> <p>Manage <strong>NIM (Network Installation Manager)</strong> for OS deployment and maintenance</p> </li> <li> <p>Execute <strong>OS patching, upgrades, and VIOS upgrades</strong></p> <ul> <li> <p>Lead and execute <strong>AIX</strong> <strong>OS migrations</strong>: 6.1, 7.1, 7.2, 7.3.</p> </li> </ul> </li> <li> <p>Perform <strong>hardware refresh, storage migration, and platform migrations</strong></p> </li> <li> <p>Experience in <strong>pSeries hardware commissioning and implementation</strong></p> </li> </ul> <p><strong>Performance, HA & DR</strong></p> <ul> <li> <p>Analyze <strong>resource utilization and system performance</strong></p> </li> <li> <p>Perform <strong>performance tuning and capacity planning</strong></p> </li> <li> <p>Strong experience in <strong>storage management</strong>, <strong>SAN environments</strong>, and <strong>HA concepts</strong></p> </li> <li> <p>Design and support <strong>Fault Tolerant systems</strong>, <strong>Business Continuity</strong>, and <strong>Disaster Recovery planning</strong></p> </li> </ul> <p><strong>Incident, RCA & Operations</strong></p> <ul> <li> <p>Act as <strong>final escalation point</strong> for complex AIX and hardware‑rel