Senior Software Engineer – Mainframe

Ensono

Senior Software Engineer developing and maintaining mainframe applications at Ensono. Leading technical aspects while supporting and mentoring junior developers in an agile environment.

Posted 7/7/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $106,000 - $152,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Mainframe application development and support, with proficiency in COBOL, CICS, JCL, DB2, and VSAM. Capable of performing technical troubleshooting, optimization, and developing comprehensive documentation to support business needs.

Highest-signal resume keywords

Mainframe Application DevelopmentCOBOLCICSDB2Agile Methodology

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

COBOLCICSJCLDB2VSAMPerformance TuningTechnical TroubleshootingSoftware Development Life CycleVersion Control SystemsAgile Methodology

Soft Skills

Problem-SolvingAnalytical SkillsCommunication SkillsInterpersonal Skills

Tools & Technologies

ServiceNowService Manager

Industry Keywords

Enterprise-Level Ticketing SystemsOperational WorkflowsChange RequestsIncidentsService Requests

Tech Stack

Tools & technologies

SDLCServiceNow

About the role

Key responsibilities & impact

Design, develop, and maintain Mainframe applications using COBOL, CICS, JCL, DB2, and VSAM.
Experience in enterprise-level ticketing systems (ServiceNow, Service Manager, etc.) and their operational workflows.
Worked on waterfall and agile methodology projects; capable of handling - Incidents, Service Requests and Change Requests simultaneously.
Provide technical troubleshooting and resolution for complex application and integration.
Conduct performance tuning and optimization of Mainframe applications and database queries.
Develop technical documentation (Knowledge Base articles, SOPs) for business and support teams
Understand both functional and technical requirements and provide implementation/change options aligned with business needs.

Requirements

What you’ll need

Education: Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field.
Experience: Extensive experience in mainframe application development, support and maintenance
Technical Skills: Proficiency in mainframe technologies such as COBOL, JCL, CICS, DB2, and VSAM. Strong understanding of software development life cycle (SDLC) methodologies. Experience with version control systems and software development tools.
Soft Skills: Excellent problem-solving and analytical skills. Strong communication and interpersonal skills.

Benefits

Comp & perks

Unlimited Paid Days Off
Three health plan options
401k with company match
Eligibility for dental, vision, short and long-term disability, life and AD&D coverage, and flexible spending accounts
Family Forming Benefit including fertility coverage and adoption/surrogacy reimbursement
Paid childbearing and paternal leave
Education Reimbursement, Student Loan Assistance or 529 College Funding
Sabbatical leave
Wellness program
Flexible work schedule