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 in IBM AIX and pSeries administration
Deep understanding of IBM AIX OS and Power Systems architecture
Strong experience with PowerVM, VIOS, HMC
Excellent troubleshooting skills for OS and hardware issues
Strong scripting skills (Shell, Perl)
Experience in enterprise production environments

Preferred Qualifications

IBM Certifications in:
- AIX System Administration
- pSeries Hardware
- Performance Tuning
- Network Administration
Experience in large, mission‑critical environments
Exposure to hybrid or cloud‑integrated IBM Power workloads

Professional Attributes

Strong analytical and problem‑solving skills
Ability to diagnose and resolve issues quickly under pressure
Excellent communication and documentation skills
Proactive, detail‑oriented, and ownership‑driven mindset
Team‑oriented approach with mentoring and knowledge‑sharing attitude

Shift timing- 1:30 PM to 10:30 PM

We are an equal opportunity employer. All qualified applicants will be considered for employment without regard to caste, colour, creed, religion, gender, gender identity, sexual orientation, age, disability, HIV status, or any other status protected by law. Candidates with disabilities who require accommodations during the recruitment process are encouraged to contact our Talent Acquisition team to place a request.