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oracle

Senior Associate, Mainframe Infrastructure Testing Engineer

DTCC
Texas, USA
Full-time
Senior · 6+ years experience
Onsite
Discovered 3 weeks ago
ansiblegitjenkinspython

Full Job Posting

Qualifications:

  • Minimum of 6 years of related mainframe systems engineering, mainframe infrastructure testing, systems programming, production support, performance engineering, or platform architecture experience; 9 or more years preferred for candidates expected to operate as the primary onshore SME.
  • Hands-on or systems-level depth in IBM z/OS and several related technologies such as JCL, CICS, Db2, IBM MQ, RACF, TCP/IP, storage, or enterprise scheduling.
  • Demonstrated experience assessing complex infrastructure changes, identifying dependencies and failure modes, and translating technical risk into a practical test strategy.
  • Experience with capacity, stress, performance, extended-run, upgrade, migration, disaster-recovery, or production-readiness testing.
  • Experience working across engineering, operations, application, cybersecurity, architecture, and change-management teams.
  • Bachelor’s degree is preferred, or equivalent relevant experience.
  • Financial services or other highly regulated, high-availability transaction-processing experience strongly preferred.

Technical Skills:

  • Platform and architecture: IBM z/OS architecture and operating-system concepts; LPARs; Sysplex and Parallel Sysplex; workload distribution; IPL and system-startup concepts; environment health and dependency analysis.
  • Transaction, database, and messaging: Working knowledge of CICS, Db2 for z/OS, and IBM MQ for z/OS, including service dependencies and validation considerations.
  • Batch and scheduling: Strong JCL knowledge; JES2/JES3 concepts; batch workload analysis; job and dataset dependencies; restart and recovery; CA-7, ESP, Control-M, or comparable workload automation platforms.
  • Security and access: RACF concepts, privileged and non-privileged IDs, access controls across production, DR, and test environments.
  • Network and file transfer: FTP/SFTP, NDM/managed file transfer concepts and cross-platform connectivity.
  • Storage and resiliency: DASD and storage concepts, backup and recovery, replication, failover, disaster recovery, business continuity, and resiliency validation.
  • Testing and diagnostics: Risk-based test strategy, performance and capacity testing, extended-run testing, upgrade testing, defect analysis, expected return-code verification, logs and system messages, and evidence-based sign-off.
  • Automation: Ability to use scripting or automation to improve repeatability. Experience with REXX, Python, Shell, Ansible, Jenkins, Git, or comparable tools is beneficial.
  • Talents Needed for Success:
  • Mainframe capacity stress testing and performance analysis.
  • Extended-run or endurance testing of business-critical workloads.
  • ESP migration or comparable scheduler migration and validation.
  • RIT Lab, DR, or lower-environment readiness and refresh validation.
  • z/OS and middleware upgrade testing.
  • Development of reusable mainframe test cases, validation scripts, dashboards, or evidence-collection automation
  • Systems thinking and the ability to connect mainframe services, application workloads, dependencies, failure modes, and business impact.
  • Strong troubleshooting and analytical skills, with disciplined attention to return codes, logs, schedules, system messages, and test evidence.
  • Ability to work independently as a trusted mainframe testing SME while collaborating effectively across technology organizations.
  • Clear written and verbal communication, including concise presentation of testing status, risks, defects, and recommendations to technical and leadership audiences.
  • Commitment to knowledge transfer, documentation, engineering quality, resiliency, accountability, and continuous improvement.
  • 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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