Mainframe Engineer
Westlake, TX
Category: Development
Industry: Financial Services
Reference ID: JN -052026-106912
Date Posted: 05/11/2026
Shortcut: http://careers.eliassen.com/up3DbM
Description:
Onsite in Westlake, TX
Our client seeks a Mainframe Engineer to develop and maintain high-volume, business-critical money movement platforms within brokerage record-keeping technology. You will collaborate with product, architecture, operations, and vendor partners to deliver stable, secure, and high-quality software across batch and online environments. The role requires strong COBOL, CICS, DB2, VSAM, and JCL expertise, with a focus on analysis, testing, release management, and production support. Exposure to cloud integration, RESTful services, and stored procedures is beneficial.
Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $55.00 to $60.00/hr. w2
#LI-JS1
Responsibilities:
- Engage with business and systems partners to deliver high-quality, innovative software solutions.
- Develop, maintain, and enhance mainframe applications across batch and online environments.
- Perform detailed analysis for maintenance and enhancement projects.
- Design, deploy, and support software releases into production environments.
- Collaborate with operations teams and vendors to ensure system stability and performance.
- Employ data security practices to safeguard customer information.
- Execute thorough unit, functional, and regression testing.
- Identify root causes of problems and implement technical solutions.
- Handle high-severity and critical production issues.
- Create and maintain clear, accurate technical documentation.
Experience Requirements:
- 7 to 10 years of software development experience in business-critical, enterprise applications.
- Excellent mainframe development skills in COBOL, CICS, DB2, VSAM, JCL, IBM utilities, FileAID, Endevor, SQL, debuggers, schedulers, and IOMs.
- Proven ability to perform hands-on, detailed analysis for batch and online systems.
- Experience designing, deploying, and supporting production software releases.
- Demonstrated capability to troubleshoot and resolve high-severity production issues.
- Strong documentation and testing discipline, including unit, functional, and regression testing.
- Experience writing COBOL or native stored procedures (preferred).
- Experience with distributed technologies such as Java and RESTful APIs (preferred).
- Awareness or exposure to cloud platforms such as AWS or Azure, including hybrid mainframe–cloud integration scenarios (preferred).
Education Requirements:
- BS/BA or advanced degree, or equivalent experience preferred.
- Training or certification exposure related to AWS or Azure (preferred).
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contact fraud@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above