Sr. Mainframe Developer

MainframeMaster; Dearborn (MI); On-site; USD 110,000 - 160,000; Full time

Job summary

MainframeMaster in Dearborn, MI is seeking a Senior Mainframe Developer to lead the modernization of critical financial and automotive applications. You will design, develop, and support enterprise mainframe solutions on IBM z/OS, collaborating with cross-functional teams and cloud initiatives.

You will mentor junior engineers, conduct code reviews, and drive engineering excellence while ensuring performance and security standards.

Qualifications

• Experience with IBM z/OS technologies, batch processing, production support, and Agile delivery.
• Design, develop, test, and maintain enterprise mainframe applications using COBOL, JCL, DB2, VSAM, CICS, and IMS.
• Experience with modernization and integration with Java/Spring Boot and cloud technologies.

Responsibilities

• Design, develop, test, and maintain mainframe apps using COBOL, JCL, DB2, VSAM, CICS, IMS.
• Analyze requirements and translate them into scalable solutions.
• Lead unit, integration, and system tests.
• Provide incident resolution within SLAs and root cause analysis.
• Tune DB2 queries and batch jobs for performance.
• Mentor junior developers and enforce coding standards.
• Collaborate with product owners, architects, QA, and governance.

Skills

COBOL

JCL

DB2

VSAM

CICS

IMS

Agile

Java

Spring Boot

Cloud

API

Distributed systems

Tools

Java

Spring Boot

Cloud

API

Distributed systems

Job description

Position: Senior Mainframe Developer

Location: Dearborn, MI (Hybrid) or Remote

Position Summary

Seeking an experienced Senior Mainframe Developer to support and modernize mission-critical financial and automotive applications that power global business operations. The successful candidate will provide technical leadership in the design, development, maintenance, and modernization of enterprise mainframe solutions while collaborating with cross-functional teams, business stakeholders, architects, and cloud transformation initiatives. This role requires deep expertise in IBM z/OS technologies, batch processing, production support, application modernization, and Agile software delivery practices.

Key Responsibilities

Application Development & Enhancement

• Design, develop, test, and maintain enterprise mainframe applications using COBOL, JCL, DB2, VSAM, CICS, and IMS.
• Analyze business requirements and translate them into scalable technical solutions.
• Develop and execute unit, integration, and system test plans.
• Perform impact analysis and provide implementation estimates for enhancement requests.

Production Support & Operations

• Support mission-critical production systems and resolve incidents within established SLAs.
• Analyze batch processing failures, data discrepancies, and performance issues.
• Perform root cause analysis and implement permanent corrective actions.
• Collaborate with infrastructure and operations teams during production deployments.

Database & Performance Optimization

• Optimize DB2 queries, batch jobs, and application performance.
• Conduct database analysis and tuning activities.
• Monitor application health and proactively address performance bottlenecks.

Mainframe Modernization

• Participate in modernization initiatives involving integration with Java, Spring Boot, Cloud, API, and distributed technologies.
• Assist in migration and coexistence strategies between legacy mainframe and modern platforms.
• Support data migration and system integration efforts.

Technical Leadership

• Provide mentoring and technical guidance to junior and mid-level developers.
• Conduct code reviews and ensure adherence to development standards and best practices.
• Drive continuous improvement initiatives and engineering excellence.

Collaboration & Governance

• Work closely with Product Owners, Architects, QA teams, and Business stakeholders.
• Participate in Agile ceremonies including sprint planning, reviews, and retrospectives.
• Maintain technical documentation, runbooks, and support procedures.
• Ensure compliance with Ford security, audit, and change management standards.