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CGI Technologies and Solutions, Inc.

Senior Mainframe Capacity & Performance Engineer

Baltimore, MD, United States

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Job details

Posting language: English
Posted: Nov 3, 2026

Original job description

Senior Mainframe Capacity & Performance Engineer

Position Description

CGI Federal is seeking a Senior Mainframe Capacity & Performance Engineer to support the Social Security Administration (SSA), Division of Mainframe Systems Software (MSS), Mainframe Capacity & Performance Branch (MCPB). This role provides technical expertise in mainframe performance engineering, capacity planning, workload management, systems optimization, and performance analysis across SSA's enterprise IBM zSystems environment.

The successful candidate will support mission critical capacity and performance initiatives, evaluate application readiness for production deployment, perform systems performance analysis, develop capacity forecasts, and provide recommendations that improve system availability, throughput, and operational efficiency. The position will support modernization initiatives involving cloud technologies, Agile development methodologies, DevOps practices, and enterprise monitoring and analytics platforms.

This is a 5 day a week onsite position at the client site in Woodlawn, MD

Your future duties and responsibilities

. Monitor, analyze, and optimize performance across IBM zSystems mainframe environments.

. Conduct mainframe capacity planning, workload forecasting, resource utilization analysis, and long range capacity projections.

. Perform application load testing and assess production readiness based on CPU, memory, throughput, and workload metrics.

. Conduct capacity and performance assessments for SSA production and integration environments, including before and after testing comparisons.

. Analyze application and infrastructure performance to identify bottlenecks, performance risks, and resource constraints.

. Support performance engineering efforts for CICS, DB2, z/OS Connect, WebSphere Application Server (Traditional and Liberty), and IBM MQ environments.

. Develop performance reports, trend analyses, capacity forecasts, and executive recommendations.

. Conduct real time Sysplex, LPAR, and CEC performance monitoring, root cause analysis, and performance tuning activities.

. Perform MIPS forecasting and capacity projections utilizing IBM zPCR and z/OS AIOps toolsets.

. Develop and maintain automated SAS based reporting and analytics solutions for mainframe resource utilization, trending, forecasting, and performance analysis.

. Create and maintain technical documentation, standard operating procedures (SOPs), technical diagrams, and knowledge repositories.

. Support business resiliency, disaster recovery, data replication, and hybrid cloud initiatives.

. Participate in SSA modernization efforts, proof of concept testing, emerging technology evaluations, Agile development activities, and continuous improvement initiatives.

. Provide system configuration recommendations to improve performance, availability, scalability, and operational efficiency.

. Support after hours troubleshooting and performance problem determination activities as required.

Required qualifications to be successful in this role

. Bachelor's degree from an accredited college or university.

. Minimum seven (7) years of experience supporting IBM zSystems mainframe performance engineering, capacity planning, capacity forecasting, and systems performance analysis.

. Must be able to obtain and maintain a Public Trust clearance.

. Experience analyzing, monitoring, and tuning z/OS and zLinux environments.

. Experience conducting application load testing, workload analysis, performance benchmarking, and production readiness assessments.

. Experience performing MIPS modeling, trend analysis, capacity forecasting, resource utilization reporting, and long term capacity planning.

. Experience troubleshooting performance, throughput, response time, and workload management issues across enterprise mainframe environments.

. Experience supporting IBM technologies including CICS, DB2, WebSphere Application Server (Traditional and Liberty), IBM MQ, z/OS Connect, Sysplex, LPARs, Coupling Facilities (CF), multi CEC environments, and data replication technologies.

. Experience developing technical documentation, SOPs, analytical reports, performance studies, and executive recommendations.

. Experience with enterprise zSystems performance and capacity management tools, including RMF/SMF, zPCR, MICS, MXG, SAS, IntelliMagic Vision, BMC Strobe, Dynatrace, SPLUNK, Ironstream, and related z/OS AIOps solutions.

. Experience with JCL, IBM Utilities, SQL, Oracle/DB2 databases, and data analytics/reporting platforms.

. Working knowledge of C++, Java, JavaScript, HTML, SQL, and object oriented programming concepts in support of performance analysis, reporting, and automation activities.

. Experience supporting disaster recovery, business resiliency, data replication, and hybrid cloud initiatives utilizing AWS and/or Microsoft Azure.

. Proficiency with Microsoft Office Suite, including Teams, Outlook, Word, Excel, PowerPoint, SharePoint, Visio, and Access.

. Strong written and verbal communication skills with the ability t

Desired qualifications/non essential skills required:

. Experience supporting the Social Security Administration (SSA) or other Federal agencies.

. Experience supporting large scale mainframe modernization initiatives.

. Experience with cloud integration and hybrid cloud architectures.

. SharePoint Administration experience.

. Experience creating technical architecture, workflow, systems, and operational process diagrams using Visio.

CGI is required by law in some jurisdictions to include a reasonable estimate of the compensation range for this role. The determination of this range includes various factors not limited to skill set, level, experience, relevant training, and licensure and certifications. To support the ability to reward for merit based performance, CGI typically does not hire individuals at or near the top of the range for their role. Compensation decisions are dependent on the facts and circumstances of each case. A reasonable estimate of the current range for this role in the U.S. is $91,800.00 $180,700.00.

CGI Federal's benefits are offered to eligible professionals on their first day of employment to include:

. Competitive compensation

. Comprehensive insurance options

. Matching contributions through the 401(k) plan and the share purchase plan

. Paid time off for vacation, holidays, and sick time

. Paid parental leave

. Learning opportunities and tuition assistance

. Wellness and Well being programs

#CGIFederalJob

#LI RJ1

Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

Come join our team - one of the largest IT and business consulting services firms in the world.

Qualified applicants will receive consideration for employment without regard to their race, ethnicity, ancestry, color, sex, religion, creed, age, national origin, citizenship status, disability, pregnancy, medical condition, military and veteran status, marital status, sexual orientation or perceived sexual orientation, gender, gender identity, and gender expression, familial status or responsibilities, reproductive health decisions, political affiliation, genetic information, height, weight, or any other legally protected status or characteristics to the extent required by applicable federal, state, and/or local laws where we do business.

CGI provides reasonable accommodations to qualified individuals with disabilities. If you need an accommodation to apply for a job in the U.S., please email the CGI U.S. Employment Compliance mailbox at US_Employment_Compliance@cgi.com . You will need to reference the Position ID of the position in which you are interested. Your message will be routed to the appropriate recruiter who will assist you. Please note, this email address is only to be used for those individuals who need an accommodation to apply for a job. Emails for any other reason or those that do not include a Position ID will not be returned.

We make it easy to translate military experience and skills! Click here (https://cgi-veterans.jobs/) to be directed to our site that is dedicated to veterans and transitioning service members.

All CGI offers of employment in the U.S. are contingent upon the ability to successfully complete a background investigation. Background investigation components can vary dependent upon specific assignment and/or level of US government security clearance held. Dependent upon role and/or federal government security clearance requirements, and in accordance with applicable laws, some background investigations may include a credit check. CGI will consider for employment qualified applicants with arrests and conviction records in accordance with all local regulations and ordinances.

CGI will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI’s legal duty to furnish information.

CGI is an Equal Opportunity Employer, to include disability and protected veteran status; we are committed to compliance with U.S. laws and regulations.

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More about this job

Skills

CGI
Cloud technologies
Agile development
Forecasting
Detect bottlenecks
CICS
IBM DB2
IBM WebSphere
Oracle Application Server
Root cause analysis
SAS
Reporting
Documentation
Implement ICT recovery system
Process improvement
Troubleshooting
Dynatrace
Splunk
JCL
SQL
Oracle
Data analysis
C++
Oracle Java
JavaScript
HTML
Object-oriented programming
AWS
Microsoft Azure
Microsoft Office
Microsoft Teams
Microsoft Outlook
Microsoft Word
Microsoft Excel
Microsoft PowerPoint
Microsoft SharePoint
Microsoft Visio
Microsoft Access
Communication skills
Workflow

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