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Java Mainframe Developer Jobs in Illinois (NOW HIRING)

Broadcom

R&D Software Engineer

Lisle, IL · On-site

Broadcom's Mainframe Software Division (MSD) is looking for a talented, motivated, and experienced ... Experience with IBM Z Java cryptographic service providers * Deep understanding of encryption ...

CNA

IT Rotational Associate

Chicago, IL · On-site

$47K - $78K/yr

Java (J2EE) VB / VB.NET Websphere XML VPN Oracle SQL Unix / AIX Business Intelligence Mainframe (COBOL) Service management UNIX Administration / Engineering, Windows Desktop / server Engineering ...

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How much do java mainframe developer jobs pay per hour?

As of Sep 6, 2026, the average hourly pay for java mainframe developer in Illinois is $51.72, according to ZipRecruiter salary data. Most workers in this role earn between $45.67 and $58.70 per hour, depending on experience, location, and employer.

What is a Java Mainframe Developer?

A Java Mainframe Developer is responsible for developing, maintaining, and optimizing applications that run on mainframe systems using Java and related technologies. They often work with legacy systems, integrating Java-based applications with COBOL, DB2, CICS, or other mainframe technologies. Their role includes enhancing system performance, troubleshooting issues, and ensuring seamless communication between modern and legacy systems. They may also work on migration projects, moving applications from mainframes to cloud or distributed environments.

What are some typical daily responsibilities for a Java Mainframe Developer?

A Java Mainframe Developer typically spends their day designing and coding Java applications that interface with mainframe systems, often working with legacy code in languages like COBOL. They are responsible for troubleshooting and debugging issues, performing system integrations, and ensuring data flows correctly between distributed systems and the mainframe. Collaboration with business analysts, QA testers, and infrastructure teams is common to gather requirements and ensure smooth deployments. Additionally, they may participate in code reviews, document technical solutions, and support ongoing modernization efforts. This diverse set of tasks creates a dynamic work environment with opportunities to learn and grow technically.

What are the key skills and qualifications needed to thrive in the Java Mainframe Developer position, and why are they important?

To thrive as a Java Mainframe Developer, you need a strong background in Java programming, mainframe technologies (such as COBOL, JCL, and CICS), and experience with database systems like DB2. Familiarity with version control tools, middleware, and frameworks used for modernization—plus certifications like Oracle Java Programmer or IBM Mainframe—are often essential. Strong problem-solving skills, effective communication, and the ability to collaborate with cross-functional teams set standout candidates apart. These skills ensure successful integration of modern applications with legacy systems, seamless project delivery, and efficient teamwork in complex enterprise environments.

What are the most commonly searched types of Java Mainframe Developer jobs in Illinois?

The most popular types of Java Mainframe Developer jobs in Illinois are:

What are popular job titles related to Java Mainframe Developer jobs in Illinois?

For Java Mainframe Developer jobs in Illinois, the most frequently searched job titles are:

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Java Mainframe Developer jobs near you
Infographic showing various Java Mainframe Developer job openings in Illinois as of August 2026, with employment types broken down into 68% Full Time, 22% Part Time, and 10% Contract. Highlights an 80% Physical, 5% Hybrid, and 15% Remote job distribution, with an average salary of $107,587 per year, or $51.7 per hour.

Senior Application Engineer

Neshent Technologies

Karnak, IL

Full-time

Posted yesterday

New

Job description

Job Summary

We are seeking an experienced Application Engineer with strong expertise in cloud integration, enterprise application development, and IBM mainframe technologies. The role will focus on designing scalable solutions, modernizing legacy platforms, implementing cloud and event-driven integrations, and providing Level 3 production support.

Roles and Responsibilities
  • Provide technical leadership to Agile teams and contribute to SAFe ceremonies, planning, estimation, and delivery activities.
  • Design and implement scalable cloud-based integration solutions using MuleSoft, Kafka, Azure Integration Services, and related technologies.
  • Develop and integrate applications using Java, Spring, REST APIs, OAuth 2.0, microservices, and event-driven architectures.
  • Support cloud migration, platform modernization, and integration initiatives across mainframe, cloud, distributed, and SaaS environments.
  • Design and implement highly available IBM z/OS mainframe application and platform solutions.
  • Develop, maintain, debug, and enhance COBOL, JCL, SORT, Assembler, REXX, and DB2 applications using Changeman.
  • Work with CICS, IMS, JES2/JES3, MQ, TSO/ISPF, SDSF, TCP/IP, and z/OS UNIX System Services (USS/OMVS).
  • Implement and maintain mainframe automation using IBM System Automation, IBM NetView, automation tables, policies, command lists, and event processing.
  • Support workload scheduling, batch processing, recovery/restart, monitoring, and self-healing automation.
  • Integrate mainframe platforms with cloud, monitoring, event management, ITSM, and API-based solutions.
  • Create and maintain technical documentation, architecture diagrams, operational procedures, automation definitions, dependencies, and recovery processes.
  • Provide Level 3 production support, troubleshooting application, batch, middleware, automation, performance, and availability issues.
  • Participate in on-call support for highly available production environments.
  • Identify opportunities to automate and optimize repetitive administration and application support processes.
  • Ensure solutions meet security, engineering, compliance, and information security standards.
  • Research, evaluate, deploy, and configure technologies supporting business and application needs.
Required Qualifications
  • 8–10 years of experience as an Application, Cloud, Integration, or Enterprise Engineer in complex environments.
  • Strong hands-on experience with Java, Spring, MuleSoft, REST APIs, OAuth 2.0, and message brokers.
  • Extensive experience with IBM z/OS and mainframe technologies, including JCL, REXX, TSO/ISPF, SDSF, CICS, DB2, IMS, JES2/JES3, MQ, TCP/IP, and USS/OMVS.
  • Experience with IBM System Automation for z/OS and IBM NetView, including automation policies, tables, message automation, event processing, resource dependencies, and command lists.
  • Experience with Azure, AWS, or Google Cloud Platform, preferably with managed integration services such as Azure Functions, Logic Apps, API Management, and Event Grid.
  • Experience integrating mainframe applications with cloud and distributed systems.
  • Experience supporting highly available production environments, including monitoring, recovery, restart, batch processing, workload scheduling, and automation.
  • Knowledge of Parallel Sysplex and workload scheduling tools such as IBM Workload Scheduler (IWS/TWS/ZWS).
  • Strong analytical, problem-solving, organizational, communication, and decision-making skills.
  • Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent experience.
Preferred Qualifications
  • Master's degree in Computer Science, Information Technology, or a related field.
  • Experience with cloud-native applications and LOS/LMS platforms.
  • Exposure to Databricks or data lake platforms.
  • Experience with relational databases, data modeling, and ETL technologies.
  • Experience in lending origination, servicing, or related financial services domains.
  • Experience with AI/ML technologies.

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