M&T Bank

Senior Software Engineer - Mainframe

M&T Bank  •  $97k - $162k/yr  •  Buffalo, NY (Onsite)  •  3 months ago
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Job Description

This is an exciting opportunity for a Senior Software Engineer who enjoys working at the intersection of critical mainframe systems and modern engineering practices. In this role, you’ll support highly visible platforms across Commercial Bank, Wealth, Private Banking, and Treasury while playing a key role in modernizing the mainframe ecosystem.

Beyond strong COBOL and Easytrieve skills, this position offers opportunity to lead the migration from legacy code management to devops pipeline transformation, automation, API enablement, cloud integration, and real‑time data streaming off the mainframe—work that has rarely been done in traditional mainframe environments.

You’ll collaborate closely with senior technical leaders and industry experts, contribute to new development and enhancements, and help shape the future of the platform by leveraging industry‑leading technologies such as IBM’s zDIH (z/OS Data Integration Hub). For an engineer passionate about mainframe technology who also wants to build future‑ready skills and have meaningful impact, this role offers both stability and innovation in equal measure.

Key Responsibilities

  • Design, develop, and maintain high‑quality mainframe applications and batch processes.
  • Work extensively with COBOL, JCL, JSCAN, EZTRIEVE, TSO Utilities, CA7, FILEAID, XPEDITER, and ABEND-AID.
  • Partner with architecture and DevOps teams to establish and optimize a modern DevOps pipeline for mainframe code (CI/CD, automated testing, change automation).
  • Troubleshoot complex production issues, ensuring reliability and performance of mission‑critical systems.
  • Collaborate with cross-functional teams on analysis, design, testing, and implementation of solutions.
  • Leverage IBM’s new zDIH technology to improve data integration, analytics accessibility, and modernization initiatives.
  • Receive mentoring from our most senior engineers—experts with decades of mainframe experience—and progressively mentor junior team members.
  • Participate in code reviews, architecture discussions, and continuous improvement of engineering practices.

Required Qualifications

  • 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
  • Advanced proficiency in:
    • COBOL
    • JCL / JSCAN
    • EZTRIEVE
    • TSO/ISPF Utilities
    • CA7
    • FILEAID
    • XPEDITER
    • ABEND-AID
  • Strong understanding of batch processing, data flows, and performance tuning.
  • Proven ability to troubleshoot complex system issues in large-scale environments.
  • Excellent communication and collaboration skills.

Preferred Qualifications

  • Experience contributing to or setting up DevOps/CI/CD pipelines for mainframe workloads (e.g., Git, SonarQube, SonarLint, ADDI, Ansible).
  • Familiarity with IBM’s zDIH or other mainframe modernization and integration technologies.
  • Exposure to cloud integration, API enablement, or data virtualization initiatives.
  • Background in financial services, insurance, or other high‑availability industries.

What We Offer

  • The chance to work directly with some of our most senior engineers, gaining expertise from industry veterans.
  • Opportunities to lead modernization initiatives and influence our mainframe engineering roadmap.
  • A collaborative environment that values innovation, craftsmanship, and continuous learning.
  • Competitive compensation, benefits, and professional development support.

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.

Location

Buffalo, New York, United States of America

M&T Bank

About M&T Bank

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. Founded in 1856 in Buffalo, NY we are now a top 11 full-service US-based commercial bank with a retail footprint across the east coast and wealth services available nationwide and abroad. As a bank, we offer advice, guidance, expertise, and solutions across the entire financial spectrum that combines M&T’s traditional banking services with the wealth management and institutional capabilities offered by Wilmington Trust. We are a community-minded organization with more than 167 years of experience. We serve customers, community, and colleagues whether they be across the street, across the state or across the country.

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 drive the work we do – integrity, ownership, collaboration, curiosity, candor and 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.

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.

Industry
Finance & Insurance
Company Size
10,000+ employees
Headquarters
Buffalo, New York
Year Founded
Unknown
Website
mtb.com
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