✦ Luna Orbit — Software Engineering

Mainframe Software Development Engineer

at VMware

📍 USA-IL Lisle Warrenville Road Unknown 💰 $91K – $146K USD / year Posted March 13, 2026
Salary $91K – $146K USD / year
Type Not Specified
Experience mid
Exp. Years 5+ years
Education Bachelor's degree in engineering/computer science or Master's degree in engineering/computer science
Category Software Engineering

This role involves developing and maintaining mainframe software applications primarily using assembler and Metal C on the z/OS platform. The engineer will work on security, debugging, and automation tasks within an Agile team.

  • Developing high-quality software design and architecture
  • Producing, testing and debugging software solutions
  • Providing peer leadership in an Agile team environment
  • Technical interaction with product management and customers
  • Coordination with management and internal teams

Focuses on mainframe development using assembler and Metal C, with tools like Endevor and XDC, on the z/OS operating system, emphasizing security protocols and legacy system integration.

The ideal candidate is a mid-level mainframe software engineer with 5+ years of experience in assembler and Metal C programming, strong knowledge of z/OS, and familiarity with mainframe security protocols. They should be capable of working independently on complex mainframe projects within an Agile environment.

Proficiency in IBM Assembler languageProficiency in Metal C programming languagesProven Mainframe knowledge and skillsFamiliarity with z/OS Operating systemExperience with Endevor source controlExperience with XDC debugging tool
Security protocolsSecurity ESMsAssembler languageMainframe developmentAssembler and Metal C
EndevorXDCz/OSAssemblerMetal C
AssemblerIBM AssemblerMetal Cz/OSEndevorXDCSecurity protocolsSecurity ESMs
AssemblerIBM AssemblerMetal Cz/OSEndevorXDCAssembler languageMetal C programmingMainframeSecurity protocolsSecurity ESMs
problem-solvingindependent workcollaborationorganizationjudgment
Industry IT & Software
Job Function Mainframe software development and maintenance
Role Subtype Systems Programmer
Tech Domains Active Directory, IBM z/OS, Assembler, Mainframe
MainframeAssemblerIBM AssemblerMetal Cz/OSEndevorXDCMainframe knowledgeSecurity protocolsAssembler languageMainframe developmentDebugging toolsSoftware designSoftware testingAgile developmentAgile

Lack of mainframe or assembler experience, No experience with z/OS or Endevor, Bachelor's degree not in relevant field, No familiarity with debugging tools like XDC

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