Mainframe COBOL/DB2 Developer

Seven Seven Global Services, Inc.; Pasig; On-site; PHP 600,000 - 1,000,000; Full time

Job summary

Seven Seven Global Services, Inc. is seeking an experienced Mainframe COBOL/DB2 Developer to design, code, test, and optimize enterprise mainframe applications using COBOL and IBM DB2 on IBM z/OS. The role covers batch and online processing, troubleshooting, and production support.

You will work with Business Analysts and QA teams to translate requirements into reliable technical solutions, participate in system modernization, and ensure high performance and stability of critical systems.

Qualifications

• Bachelor's degree in CS/IT/CE or related field.
• 3–5 years in mainframe COBOL/DB2 development.
• Experience with batch processing and production support.

Responsibilities

• Design, code, test, and maintain COBOL/DB2 applications.
• Develop and optimize COBOL programs and DB2 SQL.
• Create and troubleshoot JCL scripts for batch jobs.
• Perform root-cause analysis and fix recurring issues.
• Collaborate with analysts and QA to translate requirements.

Skills

Mainframe COBOL

IBM DB2

JCL

TSO/ISPF

Batch processing

Troubleshooting

SDLC

Education

Bachelor's degree in CS/IT/CE

Tools

CICS

VSAM

File-AID/Endevor/Changeman

Job description

Job Summary

We are seeking an experienced Mainframe COBOL/DB2 Developer to support the development, enhancement, maintenance, and optimization of enterprise-level mainframe applications. The successful candidate will be responsible for designing, coding, testing, and troubleshooting applications using COBOL and IBM DB2 within an IBM mainframe environment.

The role requires strong technical expertise in mainframe technologies, batch and online transaction processing, database management, and application support to ensure the reliability, performance, and stability of business-critical systems.

Duties and Responsibilities

• Design, develop, enhance, and maintain mainframe applications using COBOL and IBM DB2.

• Develop, modify, and optimize COBOL programs to support business and system requirements.

• Create, maintain, and troubleshoot Job Control Language (JCL) scripts for batch processing and job execution.

• Develop and maintain DB2 SQL queries, stored procedures, and database-related application components.

• Perform code analysis, debugging, unit testing, and system testing to ensure application quality and reliability.

• Support batch and online transaction processing within the IBM mainframe environment.

• Investigate and resolve application defects, production incidents, and system performance issues.

• Perform root cause analysis and implement permanent fixes for recurring application issues.

• Collaborate with Business Analysts, Systems Analysts, Quality Assurance teams, and other technical stakeholders to translate business requirements into technical solutions.

• Participate in application enhancements, system integrations, and modernization initiatives involving legacy mainframe systems.

• Conduct code reviews and ensure compliance with established development standards, security policies, and best practices.

• Prepare and maintain technical documentation, program specifications, and implementation procedures.

• Support application deployment, production releases, and post-implementation activities.

Minimum Qualification Requirements

Education

• Bachelor's degree in Computer Science, Information Technology, Computer Engineering, or a related field.

Work Experience

• At least 3-5 years of hands-on experience in mainframe application development using COBOL and DB2.

• Proven experience developing, maintaining, and supporting applications within an IBM mainframe environment.

• Experience working with batch processing, application enhancements, and production support.

• Experience in banking, financial services, insurance, or other enterprise environments is an advantage.

Required Technical Skills

• Strong hands-on experience in Mainframe COBOL programming, development, debugging, and maintenance.

• Proficiency in IBM DB2, including SQL queries, database operations, and performance optimization.

• Experience with Job Control Language (JCL) for batch job creation, execution, and troubleshooting.

• Working knowledge of IBM z/OS mainframe operating environments.

• Experience using TSO/ISPF for mainframe development and system navigation.

• Strong understanding of batch processing, file handling, and mainframe application workflows.

• Experience in application troubleshooting, defect resolution, and root cause analysis.

• Knowledge of Software Development Life Cycle (SDLC) methodologies and change management processes.

Preferred Technical Skills

• Experience with CICS (Customer Information Control System) for online transaction processing.

• Knowledge of VSAM (Virtual Storage Access Method) for mainframe file management.

• Familiarity with mainframe development and debugging tools such as File-AID, SPUFI, Endevor, Changeman, or equivalent tools.

• Experience in DB2 query optimization and performance tuning.

• Exposure to mainframe modernization, system migration, or legacy application integration.

• Familiarity with Agile and Waterfall development methodologies.

• Experience supporting core banking systems or other mission-critical financial applications.

Soft Skills and Competencies

• Strong analytical, problem-solving, and troubleshooting abilities.

• Excellent attention to detail and commitment to delivering high-quality code.

• Effective communication and collaboration skills.

• Ability to work independently and coordinate with cross-functional technical teams.

• Strong time management skills and ability to handle multiple priorities.

• Willingness to learn new technologies and adapt to evolving business requirements.