Senior Mainframe Systems Engineer

Company: CGI
Location: Baltimore
Posted on: April 2, 2026

Job Description:

U.S. - CGI Federal roles - What we do matters By playing this video you consent to Google/YouTube processing your data and using cookies – Learn more . Position Description: CGI is in the top 5 largest global IT companies spread across 40 countries with endless opportunities to expand and grow. As a Federal CGI Partner, you have the opportunity to be a shareholder at CGI and join a family of 91,000 CGI Partners strong. CGI is seeking a Senior Mainframe Systems Engineer to architect, maintain, and optimize mission-critical z/OS environments supporting federal agency enterprise platforms. This senior role oversees mainframe software installation, SMP/E maintenance, middleware operations, and cross-platform integration while ensuring high availability, performance, and system resilience. This position is located in Baltimore, MD Your future duties and responsibilities: . Lead installation, configuration, and lifecycle management of z/OS and related IBM mainframe subsystems. . Architect and maintain WebSphere for z/OS, mainframe middleware, and associated system components. . Oversee SMP/E software installation, patching, product upgrades, and maintenance strategy. . Perform advanced z/OS performance tuning, capacity planning, and workload management (WLM). . Manage JES2/JES3 operations, RACF security configurations, system exits, and automation routines. . Troubleshoot complex mainframe incidents, diagnose root causes, and implement long-term corrective actions. . Support integration with distributed applications, API gateways, and modernization toolchains. . Produce detailed architectural documentation, system design packages, and operational standards. . Provide technical leadership to junior engineers and collaborate with cross-functional infrastructure teams. Required qualifications to be successful in this role: . Ability to obtain and maintain Public Trust clearance . Bachelor's degree 14 years of relevant IT experience . Advanced experience administering IBM z/OS at the system engineering level. . Expertise with WebSphere on z/OS, including installation, configuration, and tuning. . Strong SMP/E knowledge and mainframe software lifecycle management skills. . Deep experience with JCL, TSO/ISPF, RACF, JES2/JES3, and common IBM utilities. . Ability to perform advanced debugging, dump analysis, and system performance monitoring. Desired qualifications/non-essential skills required: . Experience with mainframe modernization or hybrid integration efforts. . Familiarity with REXX, CLIST, or automation frameworks for mainframe operations. . Experience supporting large federal mainframe environments. . Knowledge of mainframe-to-cloud or API-driven modernization strategies. 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 $71,700.00 - $176,300.00. 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 Skills: Analytical Thinking JCL Mainframe Technical Analysis Websphere Application Server What you can expect from us: 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 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.

Keywords: CGI, Silver Spring , Senior Mainframe Systems Engineer, IT / Software / Systems , Baltimore, Maryland