Senior Mainframe Systems Engineer – COBOL, Assembler 370, JCL, DB2

skillventory - A Leading Talent Research Firm

Senior Mainframe Systems Engineer addressing business incidents and supporting Fidelity’s Recordkeeping applications within mainframe environments. Requires proficiency in core mainframe technologies including COBOL and JCL.

Posted 6/12/2026full-timeDurham • New Hampshire, North Carolina • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

Azure

About the role

Key responsibilities & impact

Responsible for addressing business incidents and aligning them with the Fidelity Recordkeeping system
Support both production and non-production environments
Researching and resolving application abends
Managing infrastructure-related changes for Fidelity Recordkeeping applications
Collaborate closely with business partners
Ensure a high level of reliability and responsiveness for daily operations

Requirements

What you’ll need

5+ years of experience in mainframe development, enhancement, and support
Proven production support experience within financial systems (required)
Strong experience developing and maintaining applications in an MVS mainframe environment
Demonstrated analytical and problem-solving skills
Hands-on experience with COBOL, Assembler 370, JCL, EASYTRIEVE, DB2, VSAM, MVS, Endeavor, ISPF, TSO, CICS, Control-M, and standard IBM utilities
Experience in coding, testing, and implementing COBOL and Assembler 370 solutions
Ability to quickly learn and understand complex processes through independent research
Capable of working both independently and collaboratively within a team environment
Strong written and verbal communication skills
Ability to manage priorities and work efficiently to meet business deadlines
Experience triaging and resolving production incidents
Familiarity with COBOL/DB2 code reviews
Experience with debugging tools (Intertest preferred)
Working knowledge of Mainframe MQ and Azure Data Factory (ADF) pipelines is a plus
Bachelor’s degree in a related field or equivalent practical experience required

Benefits

Comp & perks

Health insurance
Retirement plans
Paid time off
Flexible work arrangements
Professional development

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

mainframe developmentproduction supportMVS mainframe environmentCOBOLAssembler 370JCLEASYTRIEVEDB2VSAMCICS

Soft Skills

analytical skillsproblem-solving skillswritten communicationverbal communicationindependent researchteam collaborationpriority managementefficiency