Senior Software Engineer – Mainframe

Senior-level mainframe   engineer   responsible for delivering secure, resilient, and maintainable enterprise application solutions across delivery, modernization, and production support.   This role   partners   across   business, technology, QA, architecture, and operations   to deliver quality outcomes aligned to   enterprise SDLC, risk, regulatory, and technology standards.

1.   Mainframe   Software Engineering & Delivery   Own delivery of   secure, resilient , performance-aware   mainframe solutions across   the full lifecycle from   analysis   and   design   through   implementation,   validation,   and production support.   Translate business and technical requirements into quality application changes that support reliable batch, online, interface, and data-processing capabilities.   Troubleshoot application, transaction, batch, interface, data flow, restart/recovery, and downstream impact issues.   Prepare technical specifications, implementation and backout plans, support documentation, and delivery estimates with clear ownership of risks, dependencies, quality, and production stability.   2 . SDLC,   Quality   &   Release Readiness   Execute SDLC activities across requirements analysis, estimation, design, coding, testing, documentation, change control, and release readiness.   Apply GitLab and DevOps practices for source control, branching, merge requests, peer review, traceability, CI/CD, deployment planning, and implementation validation.   Prepare and execute unit, integration, regression, batch validation, data reconciliation, UAT support, production verification, and defect resolution activities.   Improve reliability and delivery quality through peer review, code quality, test coverage, automation, release evidence, and post-production validation.   3 . Modernization ,   Integration   & Stability   Support modernization initiatives including API enablement, data integration, technical debt reduction, platform resiliency, and modern IBM z development practices.   Contribute to integration designs across mainframe, distributed platforms, cloud-connected applications, MQ, APIs, and data movement patterns.   Support production applications, batch schedules, online transactions, interfaces, operational workflows, incident resolution, root cause analysis, and problem management.   Improve application stability, performance,   restartability , supportability, operational efficiency, and recovery readiness.   4 . Collaboration & Technical   Leadership   Partner with business, product, architecture, QA, operations, and engineering teams to deliver reliable solutions.   Guide less experienced engineers on application functionality, coding, debugging, testing, release procedures, and SDLC adherence.   Maintain strong knowledge of supported applications, business processes, dependencies, operational impacts, and technical risks.   Scope of Responsibility   Works independently on complex technical assignments with guidance from the Technology Team Lead, Engineering Lead, or Architect.   Coordinates small to medium technical work efforts and provides technical guidance to less experienced engineers as needed.   Escalates technical risks, delivery issues, design gaps, control concerns, and operational impacts appropriately.

Required   Associate’s degree and a minimum of 5 years of systems analysis and/or application development experience;   or   In lieu of a degree, a combined minimum of 7 years of higher education and/or work experience, including a minimum of 5 years of systems analysis and/or application development experience.

IBM z/OS mainframe application development experience with COBOL, CICS, JCL, DB2 for z/OS, VSAM, TSO/ISPF, SDSF,   Easytrieve +, and related tools   supporting batch, online, interface, and data-processing workloads .   Strong technical depth in batch and online