Senior Software Engineer — Mainframe (COBOL/CICS/DB2), Remote US

Ensono
Remote — United States Full-time Jul 17, 2026 COBOLmainframeCICSDB2remote
$106,000–$152,000/yearper year

About the role

Ensono, a managed-services provider that runs mainframe environments for large enterprises, is hiring a senior mainframe engineer to support, maintain, and enhance a suite of production COBOL applications. This is a fully remote US role for someone with 8+ years of hands-on mainframe experience who also enjoys mentoring less-senior developers.

Responsibilities

  • Design, develop, and maintain COBOL applications running in a production mainframe environment
  • Troubleshoot complex issues and resolve integration problems across connected systems
  • Perform performance tuning and optimization on existing applications
  • Write technical documentation and knowledge-base articles for the team
  • Manage incidents, service requests, and change requests across both waterfall and agile workflows
  • Mentor and support junior members of the mainframe team

Requirements

  • 8+ years of mainframe application development and support experience
  • Proficiency in COBOL, JCL, CICS, DB2, and VSAM
  • Bachelor's or Master's degree in Computer Science or a related field
  • Strong grasp of the full software development lifecycle
  • Excellent problem-solving and communication skills

What we offer

  • Unlimited paid time off
  • Three health plan options with coverage from day one
  • 401(k) with company matching
  • Dental, vision, and disability coverage
  • Family-forming benefits and paid parental leave
  • Education reimbursement and paid sabbatical leave
  • Flexible scheduling
$106,000–$152,000/year per year Apply now