Senior System Engineer
Ensono INC · 🌍 Pune, India
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About the role
Job Description – AIX L3 System Administrator About Us 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 www.ensono.com. Job Summary 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. Key Responsibilities AIX & pSeries Administration • Install, configure, administer, and maintain IBM AIX servers in enterprise environments • Perform AIX OS administration, kernel management, and LVM management • Manage user administration , security policies, password, and identity management • Administer system services such as NIS, NFS, Samba, and printer services Virtualization & Power Platform • Strong expertise in PowerVM / VIOS , HMC, and AIX virtualization • Build and administer VIOS servers • Manage HMC administration and upgrades (Version 9 & 10) • Deep knowledge of Power8, Power9, and Power10/11 pSeries architectures • Expert understanding of: • DLPAR • LPM (Live Partition Mobility) • Virtual networking • Virtual storage • SR‑IOV, vNIC adapters • Hands‑on experience with NPIV and SAN‑attached storage Build, Migration & Lifecycle Management • Perform AIX server build and configuration using best practices • Manage NIM (Network Installation Manager) for OS deployment and maintenance • Execute OS patching, upgrades, and VIOS upgrades • Lead and execute AIX OS migrations : 6.1, 7.1, 7.2, 7.3. • Perform hardware refresh, storage migration, and platform migrations • Experience in pSeries hardware commissioning and implementation Performance, HA & DR • Analyze resource utilization and system performance • Perform performance tuning and capacity planning • Strong experience in storage management , SAN environments , and HA concepts • Design and support Fault Tolerant systems , Business Continuity , and Disaster Recovery planning Incident, RCA & Operations • Act as final escalation point for complex AIX and hardware‑related issues • Strong in hardware and OS‑level troubleshooting • Lead Major Incident troubleshooting and RCA • Perform trend analysis , identify recurring issues, and drive corrective actions • Coordinate with hardware vendors for issue resolution • Plan, schedule, and execute changes; coordinate with cross‑functional stakeholders • Prepare weekly and monthly operational status reports • Adhere to ITIL processes , quality, and security standards Automation & Documentation • Develop Shell / Perl scripts to automate day‑to‑day administration tasks • Maintain and update technical documentation, SOPs, and knowledge base • Support continuous knowledge acquisition and documentation updates Leadership & Collaboration • Provide technical SME support across projects and operations • Work closely with application, database, storage, network, and cloud teams • Communicate effectively with interdisciplinary technical and non‑technical teams • Work in rotational shifts and on‑call support models Required Skills & Experience • 8–12+ years of hands‑on experience i