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eTeam · 1 month ago

Senior Mainframe L3 Support Engineer

Richardson, TX

Full-time

Onsite

Senior Level, Lead/Staff

10+ years exp

eTeam is seeking a Senior Mainframe L3 Support Engineer to provide Tier 3 support for mainframe OSS applications. The role involves leading a team to manage code enhancements, bug fixes, and ensuring system stability and availability for telecom network planning and administration systems.

Information Technology

Growth Opportunities

H1B Sponsor Likely

Responsibilities

Provide Tier 3 Support for all mainframe OSS applications, including:

Provide code fixes across PL/I, Assembler, COBOL, SAS, REXX, CLIST, and JCL modules

Prepare enhancements and minor functional changes

Identify and remediate vulnerabilities in mainframe modules or JCL flows

Perform analysis of production issues impacting dispatch, inventory, or planning systems

Thoroughly test all software changes using approved test suites

Successfully build and deploy all software changes through Endevor across multiple regions

Debug and resolve abends using Abend-Aid, Fault Analyzer, or system dumps

Support DB2 and IMS precompile, bind, and ACBGEN flows as required for code changes

Assist the Tier 2 Support team as needed including:

Analyzing and responding to end-user or Tier 1/Tier 2 developer questions and tickets

Administering user access to specific batch flows or applications (as necessary)

Providing routine system and job stream maintenance

Maintaining system interfaces between different subsystems

Ensuring that nightly and weekly cycles complete successfully

Remediating system overload issues, long-running jobs, or SQL degradation

Qualification

IBM z/OSPL/ICOBOLDB2EndevorJCLREXXIMSSASSoft skills

Required

Education Qualification required: BE

Minimum 10-15 years of hands-on experience supporting applications on IBM z/OS and leading a team of developers

Minimum 5–7 years of experience in PL/I or COBOL development

Strong experience with JCL, PROCs, REXX, CLIST, ISPF, and SDSF

Solid understanding of DB2 static SQL, precompile, bind, package/plan management

Experience with IMS (DB + DC), including PSB/DBD/ACB generation flows

Prior experience with Endevor or similar mainframe source/version management tools

Ability to analyze load modules, compare source-to-load behavior, and reverse-engineer logic when source is unavailable

Preferred

Experience with telecom OSS / Telecom systems

Experience with SAS on z/OS (report generation, batch execution)

Experience with dump reading tools (Abend-Aid, Fault Analyzer)

Experience in a high-availability, 24/7 operational environment

Experience integrating applications across IMS, DB2, and distributed platforms

Familiarity with NDM/Connect:Direct, MQ, SFTP on mainframe

Experience with ZLinux or z/OS UNIX System Services

Company

eTeam

Glassdoor4.0

eTeam is a staffing agency that also provides payrolling services.

Founded in 1999

Somerset, New Jersey, USA

501-1000 employees

http://www.eteaminc.com

H1B Sponsorship

eTeam has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

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2025 (36)

2024 (205)

2023 (11)

2022 (7)

2021 (24)

2020 (25)