Senior Software Engineer – Mainframe

Unum

Senior Software Engineer developing mainframe solutions in an Agile team for Fortune 500 company. Mentoring junior engineers and collaborating on technology integration for enhanced customer experience.

Posted 7/10/2026full-timeAtlanta • South Carolina, Tennessee • 🇺🇸 United StatesSenior💰 $98,340 - $201,900 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates strong expertise in COBOL, JCL, DB2, IMS, and VSAM for mainframe application development and maintenance, with a focus on Agile methodologies and effective communication. Capable of analyzing complex systems and collaborating with cross-functional teams to deliver high-quality software solutions.

Highest-signal resume keywords

COBOL ProgrammingJCL DevelopmentDB2 Database ManagementAgile MethodologiesBMC/Topaz Workbench

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

COBOLJCLDB2IMSVSAMBatch ProcessingOnline ProcessingAPI DevelopmentService-Based IntegrationsSoftware Testing

Soft Skills

Excellent CommunicationMentorshipCollaborationProblem SolvingLeadership

Tools & Technologies

BMC/Topaz WorkbenchXpediterAgile ToolsTechnical Documentation

Certifications & Qualifications

Bachelor's in Computer Science

Industry Keywords

Mainframe ApplicationsSoftware DevelopmentTechnical DocumentationProduction ReleasesDefect Resolution

About the role

Key responsibilities & impact

Leads the conceptualization, design, development, implementation, and maintenance of new and existing features for Mainframe applications.
Develop and maintain COBOL programs, JCL, DB2, IMS, and VSAM structures across batch and online environments
Collaborates with Principal SE and architects on coding standards, processes, tooling and frameworks
Analyze business and technical requirements to determine appropriate design approaches and implementation strategies
Collaborate with Grow teams, architects, and business partners to design and deliver solutions that meet functional and performance expectations
Designs, prioritizes, codes, configures, unit tests, maintains, and documents software deliverables using agreed upon standards and tools.
Participate in controlled production releases, including warranty support consisting of issue analysis and defect resolution
Contribute to technical documentation and knowledge sharing to support long-term system maintainability
Provides ongoing and appropriate mentorship for Software Engineers and Associate Software Engineers
Adapt to varying levels of modernization work depending on the nature of the request, including APIs or service-based integrations
Collaborates with team members to confirm understanding of business requirements, develop solutions with adequate testing, and transition software production environments

Requirements

What you’ll need

Bachelors of Computer Science is preferred, or equivalent relevant business experience
6+ years experience in software development
Strong proficiency in COBOL, JCL, DB2, IMS, and VSAM
Experience supporting both batch and online mainframe applications
Hands-on experience using BMC/Topaz Workbench for development and debugging
Experience using Xpediter for testing and troubleshooting mainframe applications
Skilled in Agile development/methodologies
Ability to analyze complex systems, data flows, and dependencies across multiple applications
Demonstrates excellent oral and written communication skills; experience leading groups of people through discussions, technical or otherwise

Benefits

Comp & perks

healthcare benefits (health, vision, dental)
insurance benefits (short & long-term disability)
performance-based incentive plans
paid time off
401(k) retirement plan with an employer match up to 5% and an additional 4.5% contribution