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Cobol Mainframe Developer

Ampcus, Inc

MILWAUKEE, WIJobSeen 2w agoSeen in employer's feed 1 day ago

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At a glance

Compensation
No compensation found
Location
MILWAUKEE, WI
Work Authorization
Not specified

Olive lists jobs from US employers, including remote roles you can work from the United States.

Job overview

Ampcus Inc. is seeking a Cobol/Mainframe Developer to work within Card Management Systems and handle backend business logic. The role requires mainframe experience, strong COBOL and JCL experience, and hands-on coding. The developer will work across legacy mainframe and modern server or container environments, with experience in payment or debit transactions preferred. The posting also describes work involving high-volume data processing and modernization.

Skills & qualifications

RequiredNice to have

Skills

Mainframe DevelopmentCOBOL ProgrammingJCLHands-on CodingLinuxUNIXZ/OSObject-Oriented DevelopmentMainframe TSOServer and Container DevelopmentHigh-Volume Data ProcessingMicroservicesFile TransmissionBatch ProcessingEvent-Driven ArchitectureEvent ProcessingTechnical Design WritingDocumentationUnit TestingWritten CommunicationVerbal CommunicationFinancial ServicesLegacy System ModernizationMicroservice ArchitecturesKubernetesOpenShiftDockerCloud ComputingAzureAWSDomain-Driven DesignAIXPowerShellBashUNIX ScriptingJavaJ2EEEJBJavaBeansJavaScript

Qualifications

8 Years Software Development ExperienceBachelor's in Computer Science, Information Technology or Equivalent Experience

Full job description

JOB REQUIREMENTS: Ampcus Inc. is a certified global provider of a broad range of Technology and Business consulting services. We are in search of a highly motivated candidate to join our talented Team. Job Title: Cobol / Mainframe Developer Location: Milwaukee, WI Job Description: This is for a Cobol / Mainframe Developer who would work within Card Management Systems. Must need to have an experience with Mainframe. Need a strong experience with Cobol Programming and JCL. Will be responsible for handling backend business logics. Experience with Payment Transactions or Debit Transactions area would be nice to have. Must need to have hands-on coding experience. Previous Client experience is a great to have. Qualifications Bachelor's degree in Computer Science, Information Technology or equivalent experience. 8 years of software development engineering experience. Working knowledge in Linux, UNIX & z/OS operating systems. Proficient with Mainframe Development as well as modern Object-Oriented development. Need to be able to develop in both a legacy Mainframe TSO environment and also a modern server/container environment using common IDE's and development tools. Knowledge and experience in transformation/modernization of processing high volumes of data via Mainframe processing to scalable On-prem Distributed or Cloud processing via microservices and containers. Knowledge of the following: File Transmission (FTP/NDM) & batch processing in very high-volume settings is required. Knowledge of event driven architecture and common event processing models and platforms is desired. Experience in technical design writing and documentation. Work independently and collaborate in team design sessions. Strong unit testing skills. Flexibility to be on on-call support, as required. Excellent written and verbal communication skills. Experience in Financial Services industry. Experience in decomposing and rewriting legacy processes and systems into more modern infrastructures a plus. Familiarity in microservice architectures and containers (Kubernetes/K8s, OpenShift, Docker) a plus. Familiarity in processing in a cloud (Azure, AWS) environment a plus. Familiarity in Domain Driven Design a plus. Technical Experience Linux, UNIX (AIX), z/OS. Powershell, Bash/UNIX Scripting. JAVA, J2EE, EJB, JavaBeans, JavaScript, servlets, JDBC, struts, JSR-352, Hibernate. React, Angular, Vue, TypeScript, HTML, CSS, JavaScript, Vitest, Jest. COBOL, CICS, MVS, JCL, VSAM, TSO/ISPF, FileAid, CA-EasyTrieve, Schedule tool (CA-7), Control-M, Abend-AID. Eclipse, IntelliJ, Visual Studio Code, IBM Developer for z/OS. JSON, AVRO, XML, XPath. SOAP & Restful API's. WLP,... For full info follow application link. Ampcus is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identify, national origin, age, protected veterans or individuals with disabilities. ***** APPLICATION INSTRUCTIONS: Apply Online: ipc.us/t/0B4FE43CEF9A4B1E This position is listed by a private employment agency. The agency is the legal employer. No fee will be charged of the job applicant.

How this job compares

Set against the 40,832 open Software Engineer jobs on Olive Jobs, counted November 5, 2026.

Pay
  • This postingNot listed
  • Wisconsin median$115–210K/yr301 salary ranges
  • Wisconsin median$48–65/hr24 hourly ranges
Openings
Olive Jobs lists 465 open Software Engineer jobs in Wisconsin and 40,832 across the US. 7% of them nationwide are listed as remote or flexible.
Hiring the most in Wisconsin
Experience
This posting asks for at least 8 years of experience — more than three in four Software Engineer postings that state a minimum ask for (median 5 years, across 33,318 postings).
Education
14,022 of the 40,832 open Software Engineer jobs (34%) ask for a bachelor's degree or higher.

Counted across the open, public US postings on Olive Jobs on November 5, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.

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