Senior Mainframe Developer

Ensono

Senior Mainframe Developer responsible for designing, developing, and maintaining Mainframe applications at Ensono. Collaborating with clients to achieve key business outcomes and embracing continuous change.

Posted 6/19/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $102,000 - $148,000 per yearWebsite

Tech Stack

Tools & technologies

ServiceNow

About the role

Key responsibilities & impact

At Ensono, our Purpose is to be a relentless ally, disrupting the status quo and unleashing our clients to Do Great Things!
We enable our clients to achieve key business outcomes that reshape how our world runs. As an expert technology adviser and managed service provider with cross-platform certifications, Ensono empowers our clients to keep up with continuous change and embrace innovation.
We want all new Associates to succeed in their roles at Ensono. That's why we've outlined the job requirements below. To be considered for this role, it's important that you meet all Required Qualifications. If you do not meet all of the Preferred Qualifications, we still encourage you to apply.

Requirements

What you’ll need

Design, develop, and maintain Mainframe applications using COBOL, CICS, IMS DB/DC, DB2, MQ and VSAM.
Experience in Netron Frame technology.
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.

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

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

COBOLCICSIMS DB/DCDB2MQVSAMNetron Frameperformance tuningtechnical troubleshootingdatabase queries

Soft Skills

communicationproblem-solvingadaptabilitycollaborationtime management

Certifications

cross-platform certifications