Mainframe Developer

Writing a great mainframe developer resume is important because it is one of the first things a potential employer will see when they are considering you for a position. It is your opportunity to make a good first impression and sell yourself as the best candidate for the job.

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If you're looking for inspiration when it comes to drafting your own mainframe developer resume, look no further than the samples below. These resumes will help you highlight your experience and qualifications in the most effective way possible, giving you the best chance of landing the mainframe developer job you're after.

Resume samples

Royce Gardella | (724) 275-7756 | Glendale, AZ


I am a Mainframe Developer with over 3 years of experience in developing and maintaining COBOL/CICS applications on an IBM z/OS mainframe. I have strong problem solving skills and can quickly adapt to new technologies. I am a team player who is always willing to help others, but can also work independently when needed. In my previous role, I was responsible for development, testing, implementation, and support ofMainframe application programs using COBOL II & CICS Transaction Server (TS).


Senior Mainframe Developer at CACI, AZJun 2022 - Present

  • Developed and implemented a new mainframe-based system that increased productivity by 30%.
  • Reduced costs by $1 million per year through innovative application of technology.
  • Led a team of 12 developers in the successful implementation of a complex project on time and under budget.
  • Wrote 50% of the code for a mission critical software application with zero defects.
  • Implemented an agile development methodology which shortened development cycle times by 40%.

Mainframe Developer II at Lockheed Martin, AZAug 2019 - Apr 2022

  • Led the development of a new mainframe application which increased productivity by 15%.
  • Developed an innovative solution that reduced processing time for monthly reports by 30%.
  • Authored numerous technical manuals and training materials, resulting in a 20% reduction in support calls.
  • Successfully completed major projects on time and under budget.
  • Actively mentored junior staff, leading to a 25% increase in team morale.


Bachelor of Science in Computer Science at Arizona State UniversitySep 2015 - May 2019

I've learned how to code in various programming languages, how to use different software development tools and how to design and implement algorithms.


  • IBM Z/OS
  • IBM DB2 Database
  • CICS Transaction Server
  • IMS Transaction Manager
  • COBOL Programming Language
  • JCL Job Control Language

Analisse Disse | (894) 848-7344 | Hartford, CT


I have over 4 years experience as a Mainframe Developer. I am experienced in COBOL, JCL, DB2, CICS and VSAM. I have strong analytical and problem solving skills. I am a quick learner and adapt well to new environments.


Senior Mainframe Developer at CSC, CTApr 2022 - Present

  • Streamlined the process for creating and updating customer profiles, reducing the time needed by 50%.
  • Developed new software that increased sales productivity by 15%.
  • Led a team of 5 developers in designing and implementing a new CRM system.
  • Cut production costs by 10% through process improvements.
  • Increased performance of mainframe systems by 30%.
  • Wrote code that was used in over 100 million transactions per day.

Mainframe Developer II at Infosys, CTSep 2018 - Mar 2022

  • Led the development of 3 new features for the mainframe system, which were completed on time and within budget.
  • Wrote 50% of the code for a complex data migration project from an old to a new database platform, which was successfully completed with no data loss.
  • Developed 2 automated testing tools that reduced testing time by 30%.
  • Refactored 100k lines of legacy code, improving performance by 20%.
  • Created detailed documentation for all Mainframe Developer II processes and procedures.


Bachelor of Science in Computer Science at Yale UniversitySep 2013 - May 2018

I've learned the basics of programming, algorithms, and data structures.


  • IBM z/OS
  • IBM DB2 Database for z/OS
  • CICS Transaction Server
  • IMS Transaction Manager
  • JCL - Job Control Language
  • COBOL programming language
  • VSAM