Senior Mainframe Capacity Planner - Remote

OpenKrill; United States; Hybrid; USD 90,000 - 152,000; Full time

Benefits offered by this job

Unlimited Paid Time Off

Health plan options

401k with company match

Education Reimbursement

Job summary

Ensono is seeking a Senior Capacity Planner to lead mainframe capacity planning for a dedicated client environment. You will analyze performance, forecasts, and capacity plans to support business and technology needs, while driving automation and KPI tracking.

You will guide architecture reviews, workload migrations, and complex projects, mentoring junior staff and delivering client-focused solutions. A strong mainframe background is required.

Qualifications

• Bachelor's degree and 10+ years of related experience; or a Master's degree with 6+ years of related experience.
• Hands-on experience with MXG and/or other mainframe capacity planning and performance management tools.
• Experience with IBM Z Capacity on Demand (CoD) and IBM ZCP3000 capacity planning methodologies.
• Strong understanding of z/OS internals and related subsystems.

Responsibilities

• Serve as the primary mainframe capacity planning lead and trusted advisor for a dedicated client environment.
• Analyze mainframe performance, workloads, and resource utilization to optimize capacity, efficiency, and system availability.
• Develop and maintain forecasting models, trending analyses, and capacity plans to support future business and technology needs.
• Design, implement, and enhance automation solutions that streamline capacity planning processes and improve operational efficiency.
• Establish, monitor, and refine KPIs aligned with client commitments and goals.
• Perform impact analyses and capacity assessments across IBM Z, z/OS, and supporting subsystems.
• Provide advanced technical expertise for architecture reviews and workload migrations.
• Lead complex capacity planning projects independently and mentor junior team members.
• Support capacity-related incident investigations and continuous improvement initiatives.

Skills

Mainframe capacity planning

Scripting (JCL/REXX)

Forecasting & modeling

Performance management

Communication (verbal/written)

Independence in work

Automation design

Workload management concepts

Education

Bachelor's degree in related field

Master's degree +6+ years experience

Tools

MXG

Z/OS tooling (CoD, SCRT)

IBM Z capacity planning tools

JCL

REXX

Job description

Ensono is seeking a Senior Capacity Planner to lead mainframe capacity planning for a dedicated client environment. You will analyze performance, forecasts, and capacity plans to support business and technology needs, while driving automation and KPI tracking.

You will guide architecture reviews, workload migrations, and complex projects, mentoring junior staff and delivering client-focused solutions. A strong mainframe background is required.