David Shible
Mainframe Programmer/Developer
4368 Clairesbrook Lane, Acworth,GA
Summary
Mainframe programming professional prepared for impactful contributions. Contributed to development of robust enterprise systems while fostering team collaboration and adaptability. Reliable and flexible, with proficiency in COBOL, JCL, and system troubleshooting, complemented by proactive and results-driven approach.
Overview
27
27
years of professional experience
Work History
Senior Mainframe Programmer
General Motors, GM
03.2013 - 06.2023
- Developed and maintained in-house applications designed for company needs using mainframe tools and languages.
- Analyzed system performance issues to implement enhancements, improving application reliability and speed.
- Collaborated with cross-functional teams to gather requirements and define technical specifications for projects.
- Implemented process improvements that increased operational efficiency within the mainframe environment, driving productivity gains.
- Supported end-users by troubleshooting technical issues and providing prompt resolution of reported problems.
- Managed resources efficiently while working on multiple concurrent projects, adhering to strict deadlines without compromising quality.
- Established strong working relationships with key stakeholders to gather system requirements, ensuring alignment of programming solutions with business objectives.
- Wrote and maintained technical documentation for software applications.
- Collaborated with other developers to refine software design and implementation.
- Provided computer programming subject matter expertise to project team members.
- Assisted in application integration projects, seamlessly merging legacy systems with modern platforms.
- Worked with analysts to prepare test plans and assess test data.
- Utilized both agile and waterfall methodologies to develop software of varying complexity and business needs.
- Executed system migrations and upgrades, ensuring minimal downtime and seamless transitions for users and stakeholders.
- Conducted regular training sessions for junior programmers, fostering a collaborative learning environment within the team.
Senior Mainframe Developer
Office Depot Inc
04.1998 - 05.2012
- Ensured system reliability by developing and maintaining mainframe applications.
- Collaborated with teams to gather requirements and create technical specifications.
- Implemented testing procedures to ensure data integrity and quality assurance.
- Identified software modifications to enhance performance and prevent future issues.
- Automated repetitive tasks through effective batch processing solutions, increasing efficiency.
- Conducted performance analysis, identifying bottlenecks and recommending scalability enhancements.
Junior Mainframe Developer
Alamo Rent A Car Corporate Headquarters
03.1996 - 03.1998
- Developed and maintained mainframe applications using COBOL, JCL, and CICS to support business operations.
- Conducted thorough testing of mainframe applications to ensure accuracy, reliability, and compliance with industry regulations.
- Analyzed system logs to troubleshoot performance issues, implementing corrective actions that improved overall functionality.
Education
Diploma - Mainframe Programming
Chubb Institute of Technology
Parsippany, NJ02-1996
Bachelor of Arts - Psychology
Rutgers University
New Brunswick, New Jersey, NJ05-1987
Skills
- File handling software for VSAM and other files including File-aid and File Manager
- COBOL, JCL, CICS and mainframe database programming including SQL for DB2
- IBM utilities proficiency including sort tools
- SDLC methodologies
- Mainframe scheduling tools including CA-7 and Endevor
- Microsoft office
- Agile, Scrum and Waterfall development methodologies
- GitHub collaboration
- Systems Analysis
- Requirements gathering
- Functional and Technical documentation
- Technical and team leadership and teaching
Timeline
Senior Mainframe Programmer
General Motors, GM
03.2013 - 06.2023
Senior Mainframe Developer
Office Depot Inc
04.1998 - 05.2012
Junior Mainframe Developer
Alamo Rent A Car Corporate Headquarters
03.1996 - 03.1998
Diploma - Mainframe Programming
Chubb Institute of Technology
Bachelor of Arts - Psychology
Rutgers University