Mainframe Developer
Westlake, TX
Category: Development
Industry: Financial Services
Standard Hours: Open
Reference ID: JN -092026-108539
Date Posted: 09/09/2026
Shortcut: http://careers.eliassen.com/KcSywP
Description:
Hybrid Every Other Week onsite / 5 days in Westlake, TX
Our client seeks a Mainframe Developer to design, build, and support applications on a Z/OS platform. The team leverages financial domain expertise across demographic and financial feed processing, recordkeeping, and transaction processing. You will translate business requirements into software solutions using COBOL, DB2, CICS, JCL, and VSAM, while contributing to standards, policies, and development strategies.
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: $50.00 to $54.00/hr. w2
Responsibilities:
- Perform as a full stack engineer, including requirements gathering, development, and testing.
- Participate in architecture design teams and help define and implement application level architecture.
- Develop applications on sophisticated projects, components, and subsystems.
- Recommend development testing tools and methodologies and review and validate test plans.
- Be responsible for QA readiness.
- Plan and conduct system testing.
- Develop comprehensive documentation for multiple applications or subsystems.
- Establish project plans for complex projects across multiple platforms.
- Plan and coordinate project schedules and assignments.
- Act as a primary liaison for business units to resolve project and technology issues.
- Provide technology solutions to daily issues and deliver technical evaluation estimates on initiatives.
- Advise senior management on technical strategy and mentor junior team members.
- Perform independent and complex technical and functional analysis for multiple projects.
- Identify opportunities to innovate and automate existing processes.
Experience Requirements:
- Five years of mainframe application development, test automation, and support using COBOL, CICS, DB2, JCL, VSAM, MQ-Series, Java, Web Services, and SQL.
- Experience developing and deploying Batch and CICS applications.
- Experience with File-Aid for file format and comparison, version management with Endevor, debugging and unit testing using Intertest and Abend-AID, and scheduling with Control-M.
- Experience analyzing and designing data flows for mainframe applications.
- Experience with performance tuning in TSO and MVS environments using Endevor, Git, ClearCase, Control-M, Abend-AID, Intertest, File-Aid, Easytrieve, and tools such as Strobe, iStrobe, Platinum Detector, and TMON to reduce I/Os, CPU time, MSUs, and MIPs.
- Experience with open source technologies such as Python.
Education Requirements:
Bachelor’s degree in Computer Science, Engineering, Information Technology, Information Systems, Mathematics, Physics, or a related field, and five years of experience in the role or in mainframe brokerage and stock plan services systems application development.
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.
-
Mainframe Developer
Pittsburgh, PA
Description: Hybrid 4 days onsite in Pittsburgh, PA Our client seeks an experienced Mainframe Developer to support the Automated Cash Management platform through maintenance, modernization, and enhancement. The role spans production support and hands-o...
Date Posted: 09/01/2026 Recommended
-
Mainframe Security Expert
Pittsburgh, PA
Description: Hybrid 4 days onsite in Pittsburgh, PA Our client seeks a Mainframe Security expert to execute day-to-day project tasks, perform detailed analytics, guide asset modeling, and produce project documentation. The role will serve as a subject ...
Date Posted: 09/09/2026 Recommended
-
Software Engineer
San Diego, CA
Description: On-site in San Diego, CA Our client seeks a Software Engineer to support a project at a Navy base in San Diego. The role includes analysis, design, development, and testing of applications. The engineer will develop across Linux and Androi...
Date Posted: 09/05/2026 Recommended
-
Cloud Application Software Security Engineer
St. Louis, MO
Description: Hybrid 4 days on-site, 1 day work from home in St. Louis, MO Our client seeks a Cloud Application Software Security Engineer to remediate vulnerabilities and mature SDLC pipelines. The role will focus on addressing findings from Mythos, CV...
Date Posted: 09/08/2026 Recommended
-
ServiceNow IRM/GRC Developer
Rockville, MD
Description: Hybrid 3 days onsite / 2 days remote in either Rockville, MD or Tysons Corner, VA Our client seeks a ServiceNow technical leader to develop, administer, and ensure quality across the enterprise ServiceNow platform. The role translates comp...
Date Posted: 08/21/2026 Recommended
-
Senior Cybersecurity Engineer
Anywhere
Description: Remote in either Remote or Washington, DC Our client is seeking a hands-on Senior Cybersecurity Engineer to help strengthen and scale cybersecurity practices across a growing software organization supporting mission-critical environments. ...
Date Posted: 08/19/2026 Recommended
-
Communication Specialist II
Charlotte, NC
Description: Hybrid 3 On in Charlotte, NC Our client seeks a Communication Specialist II to support leadership engagement planning, communications development, and operational execution for senior leadership meetings and enterprise-wide events. The rol...
Date Posted: 08/30/2026 Recommended
-
Senior Security Engineer
Los Angeles, CA
Description: Hybrid Fully Remote until West LA office opens - then 3x a week onsite in Los Angeles, CA Our client is seeking an experienced Senior Security Engineer with a focus on security architecture assessments across on-premises and Azure environm...
Date Posted: 08/20/2026 Recommended
-
Full Stack Engineer
Englewood, CO
Description: Hybrid 4 onsite / 1 work from home in Englewood, CO Our client seeks a Full Stack Engineer to design, build, and enhance scalable video delivery platforms and applications for streaming and media experiences. The role spans backend service...
Date Posted: 09/13/2026 Recommended
-
Principal Full Stack Engineer
Salem, NH
Description: On-site Every Other Week onsite / 5 days in either Physical Location or Salem, NH Our client seeks a Principal Full Stack Engineer to design and deliver modern web applications and the CI/CD automation that ships them. The role emphasizes ...
Date Posted: 09/15/2026 Recommended
-
Sr Test Development Engineer
Anywhere
Description: Remote Our client seeks a Sr Test Development Engineer to lead and build end-to-end automated tests for integrated software and firmware within CGM systems. The role will design, develop, execute, and maintain automated test solutions, inc...
Date Posted: 09/03/2026 Recommended
-
Computer Systems Analyst
Woodlawn, MD
Description: Hybrid 1 day per month (1st Monday of each mo) in Woodlawn, MD Transform technology into opportunity as a Systems Analyst for our client. A career in enterprise IT means connecting and enhancing the systems that matter most. You will help ...
Date Posted: 08/30/2026 Recommended
-
Senior Software Engineer
St. Louis, MO
Description: Hybrid 4 days in office in St. Louis, MO Our client seeks a hands-on Senior Software Engineer to modernize and maintain a mission-critical enterprise application in AWS GovCloud. The role focuses on practical engineering, reliability, and ...
Date Posted: 09/17/2026 Recommended
-
Full Stack Engineer
Pittsburgh, PA
Description: Hybrid 4 days onsite in Pittsburgh, PA Our client seeks a Full Stack Engineer to modernize and support a portfolio of Java-based applications. The role requires end-to-end ownership across requirements, development, testing, deployment, an...
Date Posted: 08/24/2026 Recommended
-
Sr Integration Developer
4100 Coca Cola Plaza
Description: On-site 4/1 in Charlotte, NC Our client is seeking a Senior Integration Developer to design and deliver enterprise data integrations, ETL pipelines, and API-based solutions supporting Sales, Service, and Distribution. The role emphasizes S...
Date Posted: 09/09/2026 Recommended
-
Operation Research Software Developer
Atlanta, GA
Description: Hybrid 2x in Atlanta, GA Our client is seeking a full-stack software developer to design, develop, and deploy decision-support systems that improve transportation planning, network performance, operational efficiency, and service reliabili...
Date Posted: 09/15/2026 Recommended
-
Quality Assurance Analyst
Boston, MA
Description: Hybrid 4 days onsite in either Boston, MA or Woodbridge, NJ Our client seeks a Quality Assurance Analyst to develop and execute test plans, improve coverage with AI-assisted techniques, and support a fast-paced QA organization across multi...
Date Posted: 08/27/2026 Recommended
-
Principal Software Engineer
Los Angeles, CA
Description: On-site in Los Angeles, CA Our client seeks a Principal Software Engineer to lead backend services and APIs for a payment processing platform supporting prominent technology partners. The role will drive technical leadership across release...
Date Posted: 09/07/2026 Recommended
-
Enterprise Architect
Washington, DC
Description: On-site in Washington, DC Our client seeks an Enterprise Architect to establish standards, maintain the enterprise architecture repository, and support architecture governance. The role will create data and network diagrams, capture data a...
Date Posted: 09/16/2026 Recommended
-
Principal BI Analyst
Durham, NC
Description: Hybrid in Durham, NC Our client seeks a Principal BI Analyst to design and deliver an executive value stream dashboard that provides actionable visibility into revenue drivers. The consultant will partner with data, analytics, and business...
Date Posted: 09/14/2026 Recommended
-
Business Analyst
Anywhere
Description: Remote Our client seeks a Business Analyst to support a NexGen / Guidewire program. The role focuses on two parallel tracks. First, it supports Release 1 SIT/UAT by creating and executing test cases, triaging defects, and tracing issues to...
Date Posted: 09/08/2026 Recommended
-
Senior Business Analyst
Covington, KY
Description: On-site 5 days/week in Covington, KY Our client seeks a Senior Business Analyst to support health care digital product development within Agile scrum teams. The role blends health care benefits knowledge, product development, and analysis ...
Date Posted: 09/05/2026 Recommended
-
ServiceNow Developer - Discovery and Integrations
Anywhere
Description: Remote Our client seeks an experienced ServiceNow Developer focused on Discovery and Integrations to support the Department of Transportation. The role will design and support the Service Management System, lead integrations, and deliver n...
Date Posted: 08/31/2026 Recommended
-
Tech Lead/Solutions Architect
Anywhere
Description: Remote Our client seeks a hands-on Tech Lead with strong Architecture capabilities to bridge Finance, Accounting, IT, and Development. The role combines technical leadership, hands-on development, finance systems expertise, and stakeholder...
Date Posted: 09/09/2026 Recommended
-
Lead Data Engineer
Charlotte, NC
Description: Hybrid 3 on in Charlotte, NC Our client seeks a Lead Data Engineer to own architecture and delivery of scalable data platforms on AWS. The role will lead design of data lakes and warehouses, govern IAM and security, and implement resilient...
Date Posted: 09/09/2026 Recommended
-
Lead Agilist
Cincinnati, OH
Description: On-site in Cincinnati, OH Our client seeks a Lead Agilist to coach and facilitate Agile Squads within Commercial IT. The role shall foster adoption of Agile and Scrum values, enable high-performing teams, and drive delivery of business val...
Date Posted: 09/17/2026 Recommended
-
Senior AWS Cloud Architect/Engineer
Reston
Description: On-site in Reston, VA As a Senior AWS Cloud Architect/Engineer, you will be a key player in architecting, designing, and implementing cloud solutions that empower our clients to leverage the full potential of cloud technologies. You will b...
Date Posted: 08/25/2026 Recommended
-
ETL DataStage Consultant
Culver City, CA
Description: Hybrid 4 days onsite in Culver City, CA Our client seeks an ETL DataStage Consultant to deliver development, administration, production support, and maintenance across data integration platforms. The consultant will implement and optimize ...
Date Posted: 08/27/2026 Recommended
-
QA Database Tester
Anywhere
Description: Remote Our client seeks a QA Database Tester to support delivery of high-quality software solutions. The role requires strong database testing experience, proficiency with complex SQL, and experience with test automation. The tester will c...
Date Posted: 09/01/2026 Recommended
-
Tech Lead
New York, NY
Description: Hybrid 3-4 days onsite in New York, NY Our client is seeking a Tech Lead to provide hands-on technical leadership for an Ad Sales Modernization engagement. The role drives architecture decisions, ensures delivery quality, and aligns cross-...
Date Posted: 08/31/2026 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