> Markdown version of [/jobs/ext/581827-senior-mainframe-developer](https://www.wearedevelopers.com/jobs/ext/581827-senior-mainframe-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Mainframe Developer - **Company:** Ensono - **Location:** Downers Grove, IL, United States (Remote available) - **Experience:** Expert - **Salary:** $102,000.0 - $148,000.0 - **Contract:** Permanent contract - **Skills:** Agile Methodology, Customer Information Control System (CICS), COBOL (Programming Language), IBM DB2, Database Queries, Job Control Language (JCL), IBM Information Management System, Issue Tracking Systems, Mainframes, Performance Tuning, Software Tools, Software Engineering, Virtual Storage Access Methods, Mainframe Programming, Information Technology, Software Version Control, Servicenow - **Published:** June 21, 2026 - **Apply:** https://www.juju.com/job/00000000ga1ovj ## About the Role + Design, develop, and maintain Mainframe applications using COBOL, CICS, IMS DB/DC, DB2, MQ and VSAM. + Experience in Netron Frame technology. + Experience in enterprise-level ticketing systems (ServiceNow, Service Manager, etc.) and their operational workflows. + Worked on waterfall and agile methodology projects; capable of handling - Incidents, Service Requests and Change Requests simultaneously. + Provide technical troubleshooting and resolution for complex application and integration. + Conduct performance tuning and optimization of Mainframe applications and database queries. + Develop technical documentation (Knowledge Base articles, SOPs) for business and support teams + Understand both functional and technical requirements and provide implementation/change options aligned with business needs. + undefined + Education: Bachelor's or Master's degree in Computer Science, Information Technology, or a related field. + Experience: Extensive experience in mainframe application development, support and maintenance + Technical Skills: Proficiency in mainframe technologies such as COBOL, JCL, CICS, DB2, IMS DC/DB, MQ and VSAM, Netron Frame Technology. Strong understanding of software development life cycle (SDLC) methodologies. Experience with version control systems and software development tools. + Soft Skills: Excellent problem-solving and analytical skills. Strong communication and interpersonal skills. Ability to work independently and as part of a team. ## Related Videos - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Cloud as the new mainframe: why the cloud hype does not reflect the dev reality](https://www.wearedevelopers.com/videos/797-cloud-as-the-new-mainframe-why-the-cloud-hype-does-not-reflect-the-dev-reality) - [Applying Agile Principles to Incident Management ](https://www.wearedevelopers.com/videos/101-applying-agile-principles-to-incident-management) - [Data Fabric in Action - How to enhance a Stock Trading App with ML and Data Virtualization](https://www.wearedevelopers.com/videos/253-data-fabric-in-action-how-to-enhance-a-stock-trading-app-with-ml-and-data-virtualization) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Migrating from COBOL with AI: A Moonshot Demo](https://www.wearedevelopers.com/videos/1531-migrating-from-cobol-with-ai-a-moonshot-demo) ## Related Articles - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)