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Principal Mainframe Performance Engineer

DTCC Candidate Experience Site
Coppell, TX Full Time
POSTED ON 11/14/2025 CLOSED ON 1/13/2026

What are the responsibilities and job description for the Principal Mainframe Performance Engineer position at DTCC Candidate Experience Site?

Are you ready to make an impact at DTCC? 

Do you want to work on innovative projects, collaborate with a dynamic and supportive team, and receive investment in your professional development? At DTCC, we are at the forefront of innovation in the financial markets. We're committed to helping our employees grow and succeed. We believe that you have the skills and drive to make a real impact. We foster a thriving internal community and are committed to creating a workplace that looks like the world that we serve.

Pay and Benefits:
  • Competitive compensation, including base pay and annual incentive
  • Comprehensive health and life insurance and well-being benefits, based on location
  • Pension / Retirement benefits 
  • Paid Time Off and Personal/Family Care, and other leaves of absence when needed to support your physical, financial, and emotional well-being.
  • DTCC offers a flexible/hybrid model of 3 days onsite and 2 days remote (onsite Tuesdays, Wednesdays and a third day unique to each team or employee). 
The Impact you will have in this role:

The Systems Engineering team is responsible for the entire technical effort to evolve and verify solutions that satisfy client’s needs. The primary focus is centered on reducing risk and improving the efficiency, performance, stability, security, and quality of all systems and platforms.

The Principal Platform Engineer is a member of the Mainframe Performance team. This is a technical position responsible for the overall performance of the Mainframe environment. Duties include the balancing of resources across the Z system complex, reporting and analysis of performance metrics, system tuning, and responding to issues. This position requires proven leadership skills to coordinate and lead initiatives regarding mainframe performance and effectively coordinate with various IT groups and Product Managers.

Your Primary Responsibilities:
  • Maintain and optimize IBM z/OS mainframe environments supporting core applications.
  • Proactively Identify and resolve performance bottlenecks in z/OS subsystems and applications utilizing the zOS ecosystem.
  • Provide L2 diagnostics and production support of a z/OS mainframe environment.
  • Analyze and tune CPU, Memory, I/O, Network, LPARs configurations, and Parallel Sysplex.
  • Configure and support performance testing environments; provide detailed analysis of results 
  • Ensure proper prioritization of critical path batch workloads.
  • Drive modernization and observability efforts on the mainframe, including new tools and products to enhance reporting, alerting, and advanced analytics.
  • Support subsystem SME’s including DB2, CICS, Network, and Storage.
  • Provide consulting services to IT staff on performance issues. 
  • Serve as a trusted coach and mentor within the team.
  • Communicate effectively across the organization.
  • Mitigate risk by following established procedures and controls. 

**NOTE: The Primary Responsibilities of this role are not limited to the details above. **

Qualifications:
  • Minimum 5 years of related experience.
  • Bachelor’s degree in computer science or equivalent experience.
Talents Needed for Success:
  • Expertise with WLM and z/OS internals knowledge
  • Experience with mainframe monitoring tools (e.g., MainView or equivalent).
  • Knowledge of key subsystems including DB2, MQ, CICS and WebSphere.
  • Capability to evaluate and recommend the adoption of new tools and techniques to enhance the mainframe observability profile.
  • Teamwork, leadership, coaching, mentoring skills.
  • Demonstrate strong ethical behavior.
  • Experience in observability metrics and analysis
Work Environment:
  • Hybrid work schedule.
  • On-call rotation for critical system support.

The salary range is indicative for roles at the same level within DTCC across all US locations. Actual salary is determined based on the role, location, individual experience, skills, and other considerations. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

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Salary.com Estimation for Principal Mainframe Performance Engineer in Coppell, TX
$110,829 to $137,566
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