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Cobol / Mainframe Developer

  • Job type Posted on: Jul 20, 2026
  • Experience level Ampcus
  • Employment type Milwaukee, Wisconsin
  • Employment type Onsite
  • Salary Full-time

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Job Title :

Cobol / Mainframe Developer

Job Type :

Full-time

Job Location :

Milwaukee Wisconsin United States

Remote :

No

Jobcon Logo Job Description :

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, WebSphere, Open Liberty, Quarkus, Spring Boot/Batch. Kafka, RabbitMQ, MQ Series. DB2, SQL, MS Access, Yugabyte. FTP/SFTP, NDM. Ampcus is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veterans or individuals with disabilities.

Jobcon Logo Position Details

Posted:

Jul 20, 2026

Reference Number:

14660_C0F5D4A4345B0E6F163F34287C878D4B

Employment:

Full-time

Salary:

Not Available

City:

Milwaukee

Job Origin:

APPCAST_CPC

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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, WebSphere, Open Liberty, Quarkus, Spring Boot/Batch. Kafka, RabbitMQ, MQ Series. DB2, SQL, MS Access, Yugabyte. FTP/SFTP, NDM. Ampcus is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veterans or individuals with disabilities.

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