Senior System Engineer

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.

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.

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

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

DLPAR

LPM (Live Partition Mobility)

Virtual networking

Virtual storage

SR‑IOV, vNIC adapters

Hands‑on experience with NPIV and SAN‑attached storage

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.

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

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

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

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

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

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.