Mainframe Engineer
Westlake, TX
Category: Development
Industry: Financial Services
Reference ID: JN -052026-106912
Date Posted: 06/10/2026
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.
-
Lead Engineer
Los Angeles, CA
Description: Hybrid Remote to start that will eventually go hybrid in Los Angeles, CA Our client is seeking a Lead Engineer with deep expertise in .NET, C#, SQL Server, and Azure. You will lead backend-focused initiatives to build scalable, cloud-nativ...
Date Posted: 06/16/2026 Recommended
-
Quant Developer
Jersey City, NJ
Description: On-site in Jersey City, NJ Our client seeks a senior software engineer to lead design and development of next-generation electronic trading systems and data infrastructure. The role requires hands-on leadership building scalable, resilient...
Date Posted: 06/24/2026 Recommended
-
Senior Software Engineer - Risk Team
Los Angeles, CA
Description: Hybrid in Los Angeles, CA Our client seeks a Senior Software Engineer for the Risk Team to design and deliver scalable, secure, and resilient backend services supporting fraud detection, risk scoring, and compliance automation. The role re...
Date Posted: 06/10/2026 Recommended
-
Site Reliability Engineer
Westlake, TX
Description: Hybrid (50-75% on site) We are seeking a Site Reliability Engineer to join a large‑scale enterprise infrastructure organization within the financial services industry. This team is responsible for ensuring the reliability, scalability, and...
Date Posted: 05/28/2026 Recommended
-
Software Quality Assurance Engineer
San Diego, CA
Description: On-site in San Diego, CA Our client seeks a Software Quality Assurance professional to develop and execute verification strategies for manufacturing equipment, automation, and systems. The role will collaborate with R&D, Manufacturing, and...
Date Posted: 06/16/2026 Recommended
-
Mid Systems Engineer, PAM (CyberArk)
Washington, DC
Description: On-site in Washington, DC Step into the role of a Senior-Level CyberArk Engineer supporting our client at the Department of Transportation. You will contribute to deploying and maintaining a Privileged Access Management solution across dev...
Date Posted: 06/16/2026 Recommended
-
Senior Java Engineer
Jersey City, NJ
Description: On-site in Jersey City, NJ Our client seeks a highly experienced software engineer to lead the design and development of next-generation trading systems. This hands-on technical leadership role focuses on building scalable, resilient, and ...
Date Posted: 06/24/2026 Recommended
-
Senior AI Engineer
Anywhere
Description: Remote Our client is assembling a next-generation AI engineering team to reimagine the claims lifecycle with AI and Generative AI. This early-stage, high-impact initiative emphasizes rapid experimentation, iteration, and delivery of real-w...
Date Posted: 06/17/2026 Recommended
-
Senior / Staff Software Engineer - UI Client Application
Anywhere
Description: Remote Our client seeks a Senior / Staff UI Software Engineer to lead design and development of an Angular and TypeScript client application for next-generation sequencing instruments. The role delivers touchscreen interfaces within an Ele...
Date Posted: 05/31/2026 Recommended
-
Senior Performance Engineer
Jersey City, NJ
Description: On-site in Jersey City, NJ Our client seeks a Senior Performance Engineer to define strategy, establish performance excellence, and create systems that make performance a default outcome for software delivery within digital asset platforms...
Date Posted: 06/09/2026 Recommended
-
Senior AWS Cloud Developer
Westlake, TX
Description: On-site in Westlake, TX Our client seeks a Senior AWS Cloud Developer to build scalable backend services for digital financial experiences. The team modernizes mainframe capabilities and delivers reusable Java applications that power custo...
Date Posted: 06/24/2026 Recommended
-
Software Developer
New York, NY
Description: On-site in New York, NY Our Fortune 500 media client seeks a Software Developer to help build the next-generation, cloud-based content distribution pipeline on AWS for global partner delivery. You will work end to end across product goals,...
Date Posted: 06/22/2026 Recommended
-
Systems Analyst
Westlake, TX
Description: On-site in Westlake, TX Our client seeks a systems analyst to understand application components, map customer journeys, define data flows, and clarify platform inputs and outputs. The role will facilitate requirements sessions with busines...
Date Posted: 05/31/2026 Recommended
-
Senior Software Engineer
Westlake, TX
Description: On-site in Westlake, TX Our client seeks a Senior Software Engineer to lead initiatives for Security Master and Pricing applications. The role will interface with end users and product owners, support distributed systems, and improve busin...
Date Posted: 06/24/2026 Recommended
-
Sr. Site Reliability Engineer III
Washington dc, DC
Description: Onsite in Washington, DC our client seeks a Sr. Site Reliability Engineer III to design, automate, and operate mission-critical systems for federal environments. The role focuses on Kubernetes or VMWare platforms, CI/CD enablement, observa...
Date Posted: 06/10/2026 Recommended
-
Oracle SQL/PLSQL - Exadata
Westlake, TX
Description: Hybrid every other week onsite/5 days in either Westlake, TX or Jersey City, NJ or Smithfield, RI Our client seeks a Principal Software Engineer / Full Stack Engineer with deep Oracle SQL/PLSQL expertise and hands-on Exadata engineering ex...
Date Posted: 06/20/2026 Recommended
-
ETL Data Engineer
Tysons Corner, VA
Description: Hybrid 3 days onsite / 2 days remote in Mclean, VA Our client seeks an ETL Data Engineer to build and maintain large-scale data pipelines and to design agentic AI systems that support regulatory analytics. The role spans Spark-based ETL on...
Date Posted: 06/02/2026 Recommended
-
Senior Software Engineer in Test
Merrimac, NH
Description: On-site in Merrimack, NH Our client seeks a Senior Software Engineer in Test who will embed within an Agile squad to engineer quality into products. The role focuses on building fully automated tests each sprint, collaborating with cross-f...
Date Posted: 06/17/2026 Recommended
-
Tier II Helpdesk Specialist
Denver, CO
Description: On-site 5 days/week in Overland Park, KS Our client seeks a Tier II Helpdesk Specialist to provide onsite technical support for desktops, laptops, printers, peripherals, and core applications. The specialist will record, triage, and resolv...
Date Posted: 05/28/2026 Recommended
-
AWS Cloud Architect
Anywhere
Description: Remote Our client seeks a cloud architect to design, implement, and govern secure AWS environments across development, testing, and production. The role covers enterprise architecture, AI implementation support, infrastructure as code, Dev...
Date Posted: 05/31/2026 Recommended
-
Salesforce Architect / Senior Developer
Washington, DC
Description: Hybrid Primary place of performance is HYBRID. The role involves travel to the client site in Washington, DC. At a minimum, 1-2 days per week, onsite is required. On-site attendance may also be required during system rollout activities. in...
Date Posted: 05/31/2026 Recommended
-
Software Engineer – Specialist
Prairie du Sac, WI
Description: Hybrid Flex 3 days onsite in Prairie du Sac, WI Our client seeks a Software Engineer – Specialist to design, develop, and implement software solutions that support business processes and improve the guest experience. The role collaborates ...
Date Posted: 06/14/2026 Recommended
-
Software Test Engineer and ECU Coordinator
San Diego, CA
Description:On-site in San Diego, CA Our client is seeking a Software Test Engineer and ECU Coordinator to support an agile DoD software project at a Navy base in San Diego. The role will execute manual and automated testing across UI and backend compo...
Date Posted: 06/23/2026 Recommended
-
Financial Business Analyst
Tysons Corner, VA
Description: Hybrid 3 days onsite / 2 days remote in Tysons Corner, VA Our client seeks a Financial Business Analyst to analyze and validate automated surveillance systems across multiple asset classes and regulatory domains. The role will reverse-engi...
Date Posted: 05/29/2026 Recommended
-
Unreal Engine Developer
San Diego, CA
Description: Hybrid 3 days preferred, flex in San Diego, CA Our client seeks a seasoned Unreal Engine Developer to build developer tooling and panels that run inside Unreal Engine to support animation and live action workflows. The role emphasizes C++ ...
Date Posted: 06/10/2026 Recommended
-
Senior Software Engineer in Test
Durham, NC
Description: Hybrid 2 weeks per month in either Durham, NC or Location to be confirmed Our client seeks a Senior Software Engineer in Test to design, develop, and maintain automated test suites for digital healthcare products. The role focuses on UI an...
Date Posted: 06/22/2026 Recommended
-
Database Administrator, Production Services
Salt Lake City, UT
Description: On-site Every Other Week onsite / 5 days in Salt Lake City, UT Join our client as a Junior Oracle Database Administrator supporting mission-critical environments across development, test, and production. This is a hands-on production suppo...
Date Posted: 06/11/2026 Recommended
-
Senior AI/ML Engineer
Anywhere
Description: Remote Our client seeks a Senior AI/ML Engineer to design and deliver cloud-native machine learning solutions on AWS. The role includes LLM orchestration, RAG pipelines, vector database integration, and multi-agent systems. The engineer wi...
Date Posted: 05/26/2026 Recommended
-
Software Test Engineer
San Diego, CA
Description: Hybrid in San Diego, CA Our client seeks a Software Test Engineer to lead and execute advanced software testing for web applications and instrument systems with a focus on C# and TypeScript solutions. The role includes designing and implem...
Date Posted: 06/11/2026 Recommended
-
Lead Software Engineer BaaS Team
Anywhere
Description: Remote Our client seeks a Lead Software Engineer for the BaaS team to support partner onboarding and platform enhancements. The role focuses on building scalable, secure, and high-performance systems that enable embedded financial services...
Date Posted: 06/11/2026 Recommended
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