Sr Mainframe Developer

Job Title: Sr Mainframe Developer

Location: Hybrid at Reading, PA

Position Type: Contract

Work model Expectation: Candidate should be willing to work onsite in Reading, PA, preferably 3 days/week, 2 weeks/month

Must Be Us Citizen Or Green Card Holder

HYBRID (must be on site 3 days a week)

Experience Required: 8-10

Job Summary:

We are seeking an experienced Mainframe Developer with strong expertise in COBOL-based application development, maintenance, and support. The ideal candidate will possess deep technical knowledge of IBM mainframe technologies and tools, with a proven ability to troubleshoot complex production issues, optimize system performance, and collaborate effectively with cross-functional teams.

Experience:

• 10 Relevant experience in Mainframe Development and Support

Key Responsibilities:

• Design, develop, enhance, and maintain mainframe applications using COBOL II, JCL, CICS, and related technologies.
• Develop and support online and batch processing applications in a mainframe environment.
• Work with VSAM files for data storage, retrieval, and maintenance activities.
• Create and maintain screen maps using SDF II (COBOL Maps).
• Perform debugging and issue resolution using CEDF (CICS Debug Utility) and IBM Debugging Utility.
• Utilize File Manager/FileAid tools for data analysis, testing, and troubleshooting.
• Analyze application performance and implement system-level tuning and optimization.
• Support system security, stability, and compliance requirements.
• Investigate and resolve production incidents and technical issues in a timely manner.
• Collaborate with business stakeholders, analysts, and development teams to deliver high-quality solutions.
• Prepare technical documentation and participate in code reviews and knowledge-sharing activities.

Required Skills & Qualifications:

• Strong proficiency in COBOL II, JCL, CICS, and other mainframe programming technologies.
• Hands-on experience with VSAM files.
• Experience using SDF II (COBOL Maps).
• Experience with CEDF (CICS Debug Utility).
• Experience with File Manager or FileAid tools.
• Experience with IBM Debugging Utility.
• Knowledge of system-level debugging, performance tuning, and system security.
• Experience with Easytrieve.
• Strong analytical and problem-solving skills.
• Ability to troubleshoot and resolve complex technical issues.
• Excellent verbal and written communication skills.
• Ability to work effectively in a collaborative team environment.

Preferred Qualifications:

• Experience supporting large-scale enterprise mainframe applications
• Familiarity with production support and incident management processes
• Knowledge of software development lifecycle (SDLC) and best practices