Expert Systems Engineer, AIX

At Ensono, our Purpose is to be a relentless ally, disrupting the status quo and unleashing our clients to Do Great Things ! We enable our clients to achieve key business outcomes that reshape how our world runs. As an expert technology adviser and managed service provider with cross-platform certifications, Ensono empowers our clients to keep up with continuous change and embrace innovation.

We can Do Great Things because we have great Associates. The Ensono Core Values unify our diverse talents and are woven into how we do business. These five traits are the key to achieving our purpose:

Honesty, Reliability, Curiosity, Collaboration, and Passion.

About the role and what you'll be doing:

The AIX Expert System Engineer is a senior technical authority responsible for the architecture, engineering, optimization, and strategic evolution of IBM AIX and Power Systems environments. This role serves as the highest level of technical expertise, owning complex platform decisions, large‑scale migrations, performance engineering, automation, and resiliency design for business‑critical workloads.

We want all new Associates to succeed in their roles at Ensono. That's why we've outlined the job requirements below. To be considered for this role, it's important that you meet all Required Qualifications. If you do not meet all of the Preferred Qualifications, we still encourage you to apply.

Key Responsibilities

Platform Architecture Engineering

Act as technical owner and subject matter expert (SME) for IBM AIX and Power Systems platforms

Design, architect, and standardize enterprise‑scale AIX and pSeries environments

Define and maintain architecture standards, build patterns, and best practices

Provide expert guidance for capacity planning, scalability, and platform modernization

Review and approve complex designs related to compute, storage, virtualization, and networking

IBM Power Virtualization Expertise

Deep expertise in PowerVM, VIOS, and advanced AIX virtualization

Architect and manage: HMC environments (v9 v10)

Power8, Power9, and Power10 systems

DLPAR, LPM, NPIV

Virtual networking, virtual storage, SR‑IOV, vNIC adapters

Lead VIOS architecture, build, upgrade, and high availability design

Perform pSeries hardware commissioning, refresh, and consolidation projects

Lifecycle Management Migrations

Lead AIX OS lifecycle management, including upgrades, patching, and kernel tuning

Architect and execute: AIX OS migrations (6.1 → 7.1 → 7.2→ 7.3)

Hardware refresh and data center migrations

Storage and SAN migrations

Own and optimize NIM (Network Installation Manager) design and usage

Design zero‑downtime or minimal‑impact migration strategies

Performance, Reliability Resilience

Perform advanced performance analysis, workload optimization, and tuning

Design high availability, fault tolerance, and resiliency models

Define and govern Disaster Recovery (DR) and Business Continuity (BC) strategies

Analyze platform risks and implement proactive mitigations

Define monitoring standards and performance KPIs

Incident, RCA Problem Management

Act as final escalation authority for critical and recurring AIX incidents

Lead Major Incident Management (MIM) and complex RCA investigations

Perform trend analysis, identify systemic issues, and drive long‑term fixes

Coordinate with IBM and hardware/storage vendors for deep technical resolutions

Automation Continuous Improvement

Drive automation‑first strategy for AIX operations

Develop and review Shell / Perl / Python automation frameworks

Integrate automation with Ansible or enterprise orchestration tools

Reduce manual effort, improve consistency, and enhance platform reliability

Governance, Documentation Compliance

Ensure adherence to ITIL, security, audit, and compliance requirements

Define technical governance and change standards for the AIX platform

Author and maintain architecture documents, SOPs, runbooks, and KB articles

Support audits and ensure platform compliance with enterprise policies

Leadership, Consulting Mentoring

Provide expert consultation to stakeholders, architects, and senior leadership

Mentor and technically guide L3 engineers and system architects

Support complex client engagements, audits, and transformation programs

Communicate complex technical concepts to non‑technical audiences

Required Skills Experience

12–15+ years of hands‑on experience in IBM AIX and Power Systems

Expert‑level knowledge of: AIX OS administration and kernel internals

PowerVM, VIOS, and HMC

pSeries architecture

Strong expertise in SAN storage, HA, DR, and enterprise networking

Proven experience leading large‑scale migrations and transformations

Advanced shell scripting / automation skills

Excellent troubleshooting and analytical capabilities

Preferred Qualifications

IBM Certifications in: AIX System Administration

Power Systems / pSeries Hardware

Performance Tuning

Network Administration

Experience in mission‑critical, regulated, or global enterprise environments

Exposure to h…