Duration: 9-12 months (Implementation must be completed by November/December 2025, with potential support work afterward) Job Overview: We are seeking a Senior Mainframe COBOL Developer to join a high-impact Client Data Modernization (CDM) initiative. This role will focus on decoupling, re-architecting, and re-platforming legacy systems while integrating client information data into new platforms. The ideal candidate will have strong technical expertise in COBOL, CICS, DB2, JCL, and VSAM, along with experience in batch and online processing. Key Responsibilities:

• Develop, maintain, and optimize mainframe applications using COBOL, JCL, DB2, and CICS.
• Migrate client data from legacy mainframe Client Information Files to modernized platforms.
• Work on batch processing and CICS online transaction components to ensure seamless data flow.
• Collaborate with cross-functional teams to integrate mainframe and Java-based systems for data transfer and reformatting.
• Support data integration efforts, moving data from mid-tier environments to mainframe VSAM files and databases.
• Troubleshoot, debug, and resolve issues to maintain optimal system performance.
• Perform code reviews, ensure compliance with best practices, and develop technical documentation.
• Participate in production support, handling system troubleshooting, debugging, and performance tuning.
• Stay updated with emerging mainframe technologies and best practices.

Beacon Hill is an Equal Opportunity Employer that values the strength diversity brings to the workplace. Individuals with Disabilities and Protected Veterans are encouraged to apply. If you would like to complete our voluntary self-identification form, please click here or copy and paste the following link into an open window in your browser: https://jobs.beaconhillstaffing.com/eeoc/ Completion of this form is voluntary and will not affect your opportunity for employment, or the terms or conditions of your employment. This form will be used for reporting purposes only and will be kept separate from all other records. Company Profile: Beacon Hill Technologies, a premier National Information Technology Staffing Group, provides world class technology talent across all industries utilizing a complete suite of staffing services. Beacon Hill Technologies' dedicated team of recruiting and staffing experts consistently delivers quality IT professionals to solve our customers' technical and business needs. Beacon Hill Technologies covers a broad spectrum of IT positions, including Project Management and Business Analysis, Programming/Development, Database, Infrastructure, Quality Assurance, Production/Support and ERP roles. Learn more about Beacon Hill and our specialty divisions, Beacon Hill Associates, Beacon Hill Financial, Beacon Hill HR, Beacon Hill Legal, Beacon Hill Life Sciences and Beacon Hill Technologies by visiting www.bhsg.com . Benefits Information: Beacon Hill offers a robust benefit package including, but not limited to, medical, dental, vision, and federal and state leave programs as required by applicable agency regulations to those that meet eligibility. Upon successfully being hired, details will be provided related to our benefit offerings. We look forward to working with you. Beacon Hill. Employing the Future™