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Cobol Mainframe Developer

Ampcus Inc.

Job Location:

Milwaukee, WI - USA

Monthly Salary: Not provided by the employer

Posted: 29 September 2026 (Yesterday)

Application Deadline: 27 December 2026

Vacancies: 1 Vacancy

Job Summary

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 experiencewith Mainframe.
Need a strong experience with Cobol Programming and JCL.
Will be responsible for handling backend business logics.
Experiencewith 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

Bachelors 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 IDEs 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 APIs.
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.

Required Experience:

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