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 hybrid cloud or IBM Power on Cloud architectures Professional Attributes Strategic thinker with strong technical depth Calm and decisive during critical outages Excellent communication and documentation skills Strong ownership mindset with attention to detail Collaborative leader and trusted technical advisor Comfortable working in rotational on‑call models whenever required Why Ensono? Ensono is a place to make better happen – for our clients and for your career. You can do great things through innovation or collaboration, by learning or volunteering, or to promote diversity and inclusion. You can do great things for your own health or for a healthier planet. Whatever it means to you to do great things we want Ensono to be the place you can do it.  We are a client-facing business, but we do encourage clients to allow us to work remotely most of the time so if you are not requir