Mainframe Developer

SAN1129
Netherlands
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About Candidate

Introduction:

An experienced IT professional with 16 years in mainframe technologies, specializing in financial, insurance, and healthcare sectors. Strong expertise in COBOL, JCL, DB2, CICS, VSAM, and IBM utilities, with a proven track record of modernizing and maintaining legacy systems. Skilled in software architecture, requirement analysis, and optimizing total cost of ownership (TCO). Hands-on experience in application migration, production support, and performance tuning for high-volume enterprise systems. Well-versed in Agile and Waterfall methodologies, collaborating with business teams to deliver efficient solutions. Adept at managing compliance audits, ensuring security standards, and troubleshooting critical production issues. Experienced in leading development teams, conducting peer code reviews, and mentoring new team members. Expertise in DevOps and CI/CD pipelines using GitLab, Endevor, and ServiceNow for streamlined deployment. Skilled in automation tools for monitoring, debugging, and optimizing system performance. Committed to delivering high-quality, scalable, and efficient mainframe applications.

Responsibilities:

  • Designed and developed mainframe applications using COBOL, DB2, CICS, VSAM, and JCL.
  • Led modernization projects, migrating legacy systems while ensuring data integrity.
  • Conducted performance tuning, load balancing, and CPU optimization with mainframe capacity teams.
  • Implemented software solutions following Agile and Waterfall methodologies.
  • Developed and maintained batch processing systems, ensuring smooth financial operations.
  • Managed production incidents, performed root cause analysis, and implemented emergency fixes.
  • Automated deployments and monitored mainframe applications using GitLab, Endevor, and ServiceNow.
  • Engaged with business teams to gather requirements, analyze data, and implement solutions.
  • Conducted peer code reviews, merged repositories, and managed software version control.
  • Led functional, user acceptance, and performance testing to ensure application stability.

Skills

COBOL, JCL, DB2, CICS, VSAM, IBM MQ, IMS DB, Endevor, File-Aid, TSO, ISPF, SyncSort, ICETOOL, CA ESP, IBM Developer for z/OS, GitLab, ServiceNow, Moogsoft, CA Sysview, CA Insight, CICD Pipeline, Agile, Waterfall, Mainframe Performance Tuning, Production Support, Application Migration, Software Architecture, Automation, Security Compliance, Root Cause Analysis, Testing & Debugging, Incident Management.

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