Mainframe Jobs

Lead the design, tuning, and support of z/OS networking and middleware (CICS, DB2, MQ, Connect:Direct) for M&T Bank, ensuring secure, high-performance, mission-critical services.

Ensono is hiring a Senior Mainframe Systems Programmer (DB2) to deliver expert z/OS DB2 systems programming, subsystem installs, and client support in a remote, no-on-call role.

Lead complex mainframe system engineering for z/VM with z/OS specialization to support Visa's global payments infrastructure and ensure reliable, secure operations.

Lead COBOL development and modernization efforts on a remote long-term contract supporting IRS systems, delivering high-quality code, documentation, and testing.

Visa is hiring a Staff Systems Engineer (z/OS & Network) to deliver and support complex mainframe network solutions for its global payments infrastructure from a hybrid location in Highlands Ranch, CO.

Highmark Inc. is seeking a Senior Reporting Analyst to produce, validate, and troubleshoot mainframe and PC-based reports that drive data-informed decisions across the organization.

Experienced technical support analyst needed to manage and execute NYC OMB budget processing job flows, perform testing and troubleshooting on mainframe-based financial systems, and coordinate with users and technical teams.

Lead and develop a client-facing technology support team at FIS to drive operational excellence, resolve escalations, and deliver measurable service improvements.

Serve as a senior application support analyst bridging OMB business requirements and technical execution for critical budget system job flows and batch processing on a mainframe platform.

Global Payments is hiring a Senior Mainframe Software Engineer in Columbus, GA to develop and support high‑availability payment systems using COBOL, IMS and DB2.

Experienced Mainframe Developer needed to design, develop and support COBOL/CICS enterprise applications for a global IT services client based in California City.

Lead debit modernization and maintain legacy debit authorization systems as a Product Owner, driving Agile planning, backlog prioritization, and cross-functional alignment for a high-volume payments platform.

Arthur Grand Technologies is hiring a Systems Analyst II (Mainframe - COBOL) to maintain and improve production mainframe processes supporting ancillary benefits products in a remote contract role.

Experienced mainframe developer needed to design, code, test, and maintain COBOL-based Medicare DME systems as part of a cross-functional Agile team.

Peraton seeks an experienced mainframe Software Developer to deliver and maintain high-volume Medicare DME claims processing solutions in a remote Agile environment (preference near Windsor, MD).

Provide high-impact administrative support to nuclear ship management and test operations teams at Electric Boat, handling correspondence, scheduling, travel, and departmental records.

Lead development of high-volume mainframe healthcare claims systems (DME/Medicare) using COBOL/CICS on z/OS for a mission-driven team based in Windsor Mill, MD.

Support the In-House Marketing Manager by supervising staff, running daily reporting and maintaining marketing penetration across Phoenix-area resort operations.

Systems-focused analyst needed to translate business requirements into technical solutions, support testing and UAT, and improve application performance in a remote US role with exposure to digital assets.

Experienced conversion analyst needed to lead testing and validation of retirement plan conversions within FIS Retirement Omni, ensuring accurate data migration and client acceptance.

Visa is hiring a Staff Systems Engineer with deep z/VM expertise and strong z/OS skills to support and enhance its critical mainframe infrastructure.

Experienced SME Software Developer needed to lead design and modernization of enterprise HRD applications across Natural/ADABAS, mainframe, and web platforms for a growing federal contractor.

Join FISA as a Mainframe Programmer Analyst to develop, support and troubleshoot mission-critical mainframe components of the City's Financial Management System (FMS).

Arthur Grand Technologies is looking for a Systems Analyst II with proven mainframe COBOL and SQL expertise to support production jobs, resolve defects, and enhance mainframe processing for ancillary benefit products.

Experienced Mainframe Systems Engineer (z/TPF, C/C++) to design, develop, and support Visa’s VIP Authorization middleware in a high-scale hybrid environment.

Peraton is hiring a Mainframe Software Developer with strong COBOL/CICS skills to support a DoD Defense Business System in an Agile environment.

Senior Business Systems Analyst sought by the Oregon Health Authority to lead SaaS-based modernization and migration of mission-critical financial and eligibility systems in a fully remote, permanent role.

Experienced SYNON/COOL 2E developer needed to enhance and support RxCLAIM adjudication logic and integrations for a global technology consultancy working with healthcare PBM clients.

Experienced SYNON/COOL 2E developer sought to enhance RxCLAIM claim adjudication logic for a global technology consultancy.

Peraton is hiring a Mid-Level Software Test Engineer in Lanham, MD to execute functional and automated testing across mainframe and client/server environments supporting mission-critical government programs.

Early-career mainframe developer needed to contribute to COBOL/CICS application development and support in a hybrid Plano, TX role at DXC Technology.

DXC Technology is hiring a Senior Insurance Software Java Specialist to deliver and modernize insurance application solutions using Java, COBOL/JCL, SQL and DB2 at a regional DXC office.

DXC Technology seeks a Junior Insurance Software Analyst in Plano, TX to assist with insurance system migration and modernization projects, focusing on requirements, data conversion, and testing for policy administration systems like wmA.

DXC Technology seeks a Mainframe Application Developer in Plano, TX to work hybrid (2 days onsite) on COBOL/CICS mainframe development, debugging, and documentation as part of a collaborative engineering team.

ATPCO seeks a Software Engineer to deliver 24x7 Tier 2 production support and maintain enterprise mainframe and distributed applications that power global travel.

Global Payments is hiring a hands-on Director of Applications System Development in Columbus, GA to lead cloud and legacy application teams, drive delivery, and act as the senior escalation point for complex issues.