Senior Software Engineer – Mainframe

M&T Bank; United States; On-site; USD 97,100 - 161,800; Full time

Job summary

M&T Bank is seeking a senior-level mainframe engineer to deliver secure, resilient enterprise solutions across modernization, delivery, and production support. You will partner with business, technology, QA, architecture, and operations to ensure outcomes align with enterprise SDLC, risk, regulatory, and technology standards while enhancing reliability and performance.

Responsibilities cover end-to-end life cycle from analysis to implementation, testing, deployment, and post-production support,

Qualifications

• IBM z/OS mainframe app development with COBOL/CICS/JCL/DB2 for z/OS.
• Deep batch and online processing expertise, including job streams and restartability.
• Experience with DB2 SQL, data validation, reconciliation, and performance troubleshooting.
• Proficient in SDLC/Agile delivery with Jira/Zephyr/ServiceNow usage.
• Strong communication and collaboration across multiple teams.

Responsibilities

• Own delivery of secure, resilient mainframe solutions across full lifecycle.
• Translate requirements into quality changes for batch, online, and data-processing capabilities.
• Troubleshoot application, batch, interface, data flow, and production issues.
• Prepare specs, backout plans, support docs, and delivery estimates with risk ownership.
• Apply SDLC, QA, and release readiness practices; manage CI/CD and deployments.
• Support testing activities including UAT, production verification, and defect resolution.
• Improve reliability via code quality, test coverage, and post-production validation.
• Support modernization initiatives including API enablement and data integration.
• Collaborate with cross-functional teams and mentor less experienced engineers.

Skills

COBOL

CICS

JCL

DB2 for z/OS

VSAM

TSO/ISPF

SDSF

Easytrieve+

GitLab

CI/CD

Jira

ServiceNow

AI tooling

Education

Associate’s degree in Computer Science or related field

7+ years total education/work with 5+ years in systems analysis & development

Tools

IDz

ADDI

DBB

ZUnit

z/OS Connect

File-AID

Abend-AID

Xpediter

InterTest

Job description

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.

Primary Responsibilities

• 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.
• 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.
• 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.
• 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.

Education 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.

Required 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 processing, including job stream analysis, restartability, scheduling dependencies, ABEND resolution, CICS transaction troubleshooting, and production impact assessment.
• Experience with DB2 SQL, data validation, reconciliation, copybooks/file layouts, interface analysis, and performance-oriented troubleshooting.
• Working knowledge of modern IBM z development practices and tools such as IDz, ADDI, DBB, ZUnit, z/OS Connect, ZDIH, and mainframe debugging tools including File-AID, Abend-AID, Xpediter, InterTest, or equivalent.
• GitLab, source control, code review, release management, change control, CI/CD, traceability, and deployment readiness experience.
• SDLC and Agile delivery experience including requirements analysis, story refinement, estimation, design, coding, unit testing, regression support, implementation, production verification, documentation, and tools such as Jira, Zephyr, and ServiceNow.
• Strong analytical, debugging, problem-solving, communication, and collaboration skills across business, technology, QA, architecture, operations, Agile, and cross-functional teams.
• Ability to work independently, assess impact across programs, interfaces, data flows, batch processes, and connected applications, and elevate risks, dependencies, design gaps, and operational concerns appropriately.

Preferred Experience

• Experience supporting banking, lending, payments, servicing, or other regulated enterprise applications.
• Experience with modernization, platform migration, API enablement, z/OS Connect implementation, MQ/service integration, distributed platform connectivity, technical debt reduction, resiliency, or release quality initiatives.
• Experience with Sonar or equivalent code quality/static analysis tools, automated testing, regression automation, deployment validation, observability, monitoring, and operational dashboards.
• Familiarity with RACF or mainframe security concepts, disaster recovery, recovery validation, audit evidence, risk, regulatory, and internal control expectations.
• Experience applying AI-assisted engineering tools for code analysis, documentation, testing, or operational support with appropriate human review and validation.

M&T Bank is committed to fair, competitive, and market-informed pay for our employees. The pay range for this position is $97,100.00 - $161,800.00 Annual (USD). The successful candidate’s particular combination of knowledge, skills, and experience will inform their specific compensation. The range listed above corresponds to our national pay range for this role. The specific pay range applicable to you may vary based on your location.

Location

Clanton, Alabama, United States of America