Senior Software Engineer - Mainframe

M&T Bank Corporation; Buffalo (NY); On-site; USD 97,000 - 162,000; Full time

Benefits offered by this job

Volunteer time off

Competitive benefits

Job summary

M&T Bank Corporation in Buffalo, NY is seeking a Senior Mainframe Software Engineer to enhance, maintain, modernize, and support mission-critical mainframe applications. You will design, develop, test, implement, and support changes using IBM mainframe technologies, collaborating across teams to ensure stability and compliance.

The role requires strong analytical thinking, problem solving, and communication skills, plus the ability to work independently in a fast-paced environment.

Qualifications

• Associate’s degree or Bachelor’s degree with relevant work experience.
• Minimum 5 years’ systems analysis and/or application development experience.
• At least five years of mainframe experience with COBOL, CICS, JCL, VSAM, and related tools.

Responsibilities

• Analyze, design, develop, test, and support mainframe changes.
• Prepare technical documentation, test plans, and impact assessments.
• Collaborate with stakeholders and teams following Agile, DevOps, and change-management processes.
• Provide guidance and mentorship to less experienced engineers.
• Participate in on-call/off-hours production support as needed.

Skills

Analytical thinking

Problem solving

Communication

Independent work

Education

Associate’s degree

Bachelor's degree

7+ years combined education/experience

Tools

COBOL

CICS

JCL

VSAM

TSO/ISPF

SDSF

File-AID

Xpediter

Abend-AID

CA-7

GitLab CI/CD

Job description

The Bank sponsors individuals for TN and H-1B transfers on a case by case basis. Please note that this position is not open to anyone on an F-1 student visa including those eligible for CPT/OPT or the Stem OPT extension.

Job Description:

M&T Bank is seeking a Senior Mainframe Software Engineer to support the enhancement, maintenance, modernization, and production support of mission-critical mainframe applications. This role is responsible for designing, developing, testing, implementing, and supporting application changes using IBM mainframe technologies. The engineer will serve as a key individual contributor on complex initiatives, partner with business and technology stakeholders, and help ensure that supported applications remain stable, secure, compliant, and aligned with business objectives.

Key Responsibilities:

Complete and oversee basic to complex systems analysis, design, development, testing, debugging, implementation, and production support activities. Prepare and review user stories, acceptance criteria, technical documentation, test plans, estimates, impact assessments, and system documentation in support of Agile delivery. Evaluate interrelationships and dependencies across programs, interfacing applications, vendors, platforms, and business processes. Provide analytical consultation to identify effective technology solutions that support strategic business goals. Follow and promote M&T development standards, Agile practices, DevOps practices, change management processes, and risk and regulatory controls. Deploy mainframe components through automated pipelines and support issue identification, root cause analysis, and problem resolution. Coordinate development tasks, communicate status and risks clearly, and collaborate with business partners, application teams, operations, and vendor partners. Provide technical guidance, mentoring, and knowledge sharing to less experienced engineers. Participate in on-call or off-hours production support as needed to maintain application availability and stability. Maintain a strong understanding of the business processes supported by the application and promote an inclusive environment consistent with the M&T Bank brand.

Collaboration and Leadership Expectations:

The successful candidate should demonstrate strong communication, ownership, analytical thinking, and problem-solving skills. This role requires the ability to work independently, collaborate across teams, communicate technical concepts clearly, and support continuous improvement in delivery quality, operational stability, and engineering practices.

Education & Experience Required:

Associate’s degree and a minimum of 5 years’ systems analysis and/ or application development work experience or Bachelor's degree and a minimum of 3 years’ systems analysis and/ or application development work experience. In lieu of degree, a combined minimum of 7 years’ education and/or relevant work experience, including a minimum of 3 years’ systems analysis and/or application development work experience Requires at least five (5) years of experience with mainframe application development, maintenance, testing, debugging, implementation, or production support using COBOL, CICS, JCL, VSAM, TSO/ISPF, SDSF, File-AID, Xpediter, Abend-AID, CA-7, or other job scheduling tools. Experience must include working on complex application changes, preparing technical documentation, performing impact analysis, executing test plans, and supporting production stability in an enterprise technology environment.

Preferred Knowledge and Experience:

Banking, consumer lending, or loan origination domain knowledge; ACAPS or related mainframe-based banking applications; Easytrieve, IBM Developer for z/OS, GitLab, CI/CD, DevOps pipelines, z/OS Connect, API integrations, automation tools, Agile delivery practices, Jira, Confluence, ServiceNow, and production support processes.

Location Buffalo, New York, United States of America

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.

Great companies have an enduring sense of purpose. At M&T, our purpose is a simple one: make a difference in people’s lives and uplift the communities we serve. M&T Bank Corporation is a financial holding company headquartered in Buffalo, New York. M&T’s affiliates offer advice, guidance, expertise and solutions across the entire financial spectrum, combining M&T Bank’s traditional banking services with the wealth management and institutional capabilities offered by Wilmington Trust. M&T Bank has a network of over 1,000 branches and 2,200 ATMs that span 12 states from Maine to Virginia and Washington, D.C. For more than 165 years, M&T has strived to take an active role in our communities and build long-lasting relationships with our customers. We are a bank for communities—combining the capabilities of a large bank with the care of a locally focused institution. As an employer of choice, we are proud to offer competitive benefits ranging from medical and retirement to forty hours of paid volunteer time, each year. Our core values – integrity, ownership, collaboration, curiosity, and candor – drive the work we do. We seek to further build upon our record of success by bringing in top talent and fresh skill sets while continuing to support the growth and development of all our team members. View M&T’s Human Capital Report to learn more.

M&T Bank is unwavering when it comes to providing equal employment opportunities to all employees and applicants without regard to race, color, national origin, religion, ethnicity, sex, gender identity, age, disability, citizenship, pregnancy, veteran status, military status, marital status, sexual orientation, genetic information or any other characteristic protected under applicable federal, state or local laws.

M&T Bank Corporation has policies and procedures in place to promote a drug free workplace.