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Mainframe Developer - resume example

Not sure what to put on your resume for the Mainframe Developer role? We've analyzed the common theme among resumes for this specific position, alongside researching what employers typically expect from those applying.
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John Doe | Mainframe Specialist

(123) 456-7890 | ️ |

123 Main Street, Tech City, TX 75001

Professional Summary

Innovative and detail-oriented professional with over 8 years of experience in system development, specializing in optimizing mainframe operations. Proven track record in project management, system analysis, and strategic implementation of mainframe solutions. Adept at collaborating with cross-functional teams to deliver high-quality, scalable, and efficient system enhancements.

Technical Skills

  • Languages: COBOL, PL/I, Assembler
  • Databases: DB2, IMS DB
  • Version Control: Git, SVN
  • Operating Systems: z/OS, VSE
  • Others: Agile methodologies, SDLC, Mainframe testing

Professional Experience

Senior Systems Developer
ABC Corporation, Tech City, TX | May 2016 – Present

  • Lead a team of 5 in the modernization of legacy systems, resulting in a 20% increase in processing efficiency.
  • Designed and implemented a secure transaction processing system using CICS, which reduced downtime by 15%.
  • Collaborated with the QA team to streamline testing processes, improving code quality and reducing release cycles by 25%.

Mainframe Programmer
XYZ Tech Solutions, Tech City, TX | July 2012 – April 2016

  • Developed and maintained COBOL programs for client banking systems, supporting over 10 million transactions daily.
  • Automated manual batch processes using JCL, which cut processing time by 30%.
  • Participated in the migration of legacy applications to modern platforms, ensuring seamless integration and functionality.


Bachelor of Science in Computer Science
University of Tech City, Tech City, TX | Graduated May 2012


  • IBM Certified System Programmer – Mainframe z/OS
  • Certified Database Administrator – DB2

Professional Development

  • Attended annual SHARE Technology Conference, focusing on mainframe innovation.
  • Completed ‘Advanced COBOL Programming’ course, Tech City Community College, 2014.

Professional Affiliations

  • Member, Association of Mainframe Professionals
  • Member, Tech City Developers Guild


Available upon request.

How to Make Your Resume ATS-Friendly

ATS (Applicant Tracking System) is a software application that automates the recruitment process for employers. It streamlines sorting, scanning, and ranking job applications by filtering resumes based on predefined keywords, skills, job titles, and other criteria. This assists recruiters in efficiently identifying qualified candidates for open positions.

  • Use simple formatting: ATS systems best read resumes with clear and straightforward formatting. Avoid using headers or footers, tables, images, or graphics, as these can confuse the ATS.
  • Include relevant keywords: Tailor your resume with keywords from the job description. ATS systems scan for these keywords to determine if your skills and experiences match the job requirements.
  • Stick to standard headings: Use common heading titles like “Work Experience,” “Education,” and “Skills” to ensure the ATS can easily find and categorize your information.
  • Choose the correct file type: Submit your resume as a Word document (.doc or .docx) or a plain text file (.txt) for maximum compatibility. Avoid PDFs unless specified.
  • Keep consistent job titles: If your previous job titles are not industry-standard, consider altering them slightly (without misrepresenting your role) to match more familiar titles.
  • Avoid fancy fonts or creative layouts: Stick to traditional fonts like Arial, Calibri, or Times New Roman. Creative designs and fonts might look appealing but can be problematic for ATS parsing.
  • Use full forms and acronyms: If you include technical terms or certifications, use their spelled-out form and acronyms to ensure the ATS recognizes them.
  • Be precise with dates: Format dates clearly and consistently, ideally in a ‘Month YYYY’ format.
  • Proofread for spelling and grammar: Errors can confuse the ATS. Proofread your resume or use a tool to check for accuracy.
  • Test your resume: Before submitting, test it through an ATS resume checker to see how it reads your information.

By following these guidelines, your resume will be better equipped to pass through ATS filters, increasing your chances of landing an interview.

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