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# Software Engineer - Mainframe

- **Company:** Ensono
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Salary:** $106,000.0 - $152,000.0
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Customer Information Control System (CICS), COBOL (Programming Language), IBM DB2, Database Queries, Job Control Language (JCL), Issue Tracking Systems, Mainframes, Software Tools, Software Engineering, Virtual Storage Access Methods, Mainframe Programming, Information Technology, Software Version Control, Servicenow
- **Published:** July 8, 2026
- **Apply:** https://www.builtincolorado.com/auth/login?destination=/job/senior-software-engineer-mainframe/10089743

## About the Role

The summary above was generated by AI

This role requires a highly skilled and experienced Senior Mainframe Developer with 8+ Years of specialized technical experience to support, maintain, and enhance a suite of mainframe applications. The ideal candidate will have deep expertise in various skills in mainframe technologies, middleware, databases, and DevOps practices, with a strong understanding of enterprise application support and acts as a technical lead, responsible for maintaining, enhancing, and supporting critical mainframe applications while guiding junior team members

Roles & Responsibilities

· Design, develop, and maintain Mainframe applications using COBOL, CICS, JCL, DB2, and VSAM.

· 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.

Qualifications:

· 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, and VSAM. 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.

## Description

Lead maintenance, enhancement, and support of enterprise mainframe applications. Design, develop, troubleshoot, and optimize COBOL/CICS/JCL/DB2/VSAM systems, manage incidents/changes via ticketing tools, produce technical documentation, and mentor junior engineers.


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