COBOL Mainframe Developer
Role details
Job location
Tech stack
Job description
We are seeking a highly experienced Senior COBOL Developer to join our technology team at a large retail bank. This role is primarily focused on hands-on development and enhancement of mission-critical mainframe applications supporting core banking operations. The ideal candidate brings deep expertise in COBOL, CICS, and DB2, along with a strong understanding of high-volume transactional systems. This individual will play a key role in modernizing and maintaining legacy systems while ensuring stability, performance, and regulatory compliance. This is a one-year contract-to-hire opportunity, with the intent to convert qualified candidates into full-time employees. Because this is a contract-to-hire role with permanent hiring goals, candidates requiring visa sponsorship or who are not eligible for permanent employment cannot be considered., * Design, develop, test, and maintain mainframe applications using COBOL, CICS, and DB2
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Support high-volume, mission-critical banking systems with a focus on performance and reliability
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Analyze business and technical requirements to deliver scalable and efficient solutions
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Perform code reviews, debugging, and performance tuning of existing applications
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Collaborate with business analysts, architects, and cross-functional teams to translate requirements into technical solutions
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Participate in release management, deployment activities, and production support as needed
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Ensure adherence to enterprise standards, security protocols, and regulatory requirements
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Document technical designs, processes, and system changes, * Work closely with technical teams and business stakeholders to support enterprise payment processing solutions.
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Analyze existing legacy system functionality and implement enhancements or fixes as needed. Participate in code reviews, testing, debugging, and production support activities.
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Assist in modernization and retirement-transition efforts as institutional knowledge is transitioned from legacy team members.
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Collaborate with internal engineering and delivery teams to ensure stable, scalable, and compliant system solutions.
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Contribute to future-state planning as additional retirement-driven openings become available.
Requirements
- Bachelor's degree in Business, Information Systems, Finance, Healthcare Administration, or related field.
- 10+ years of experience in mainframe application development
- Strong proficiency in:
- COBOL
- CICS
- DB2 (SQL, stored procedures, performance tuning)
- Operating systems: IBM z/OS, AIX, Mainframe: COBOL, CICS, DB2, JCL, VSAM, TSO/ISPF, Easytrieve, Endevor , CA7, Control M, BMC AMI DevX Code Pipeline Relational databases: DB2, Oracle
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Experience working in large-scale enterprise or banking environments
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Solid understanding of batch and online processing frameworks
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Proven ability to troubleshoot complex production issues
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Strong communication skills with the ability to work across technical and business teams
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Strong experience in COBOL development in a mainframe environment.
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Hands-on experience with mainframe technologies and legacy enterprise systems. Proven ability to support and enhance mission-critical applications in a regulated or large-scale enterprise environment.
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Strong analytical, troubleshooting, and problem-solving skills.
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Ability to work effectively in a collaborative team setting while also operating independently when needed.
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Excellent verbal and written communication skills for internal technical collaboration., * Banking domain expertise especially ACH/Payments domains.
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Experience with Fiserv integrations
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Familiarity with ZEOS Connect API development
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Exposure to modernization efforts (e.g., API enablement, mainframe integration strategies)
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Experience working in regulated financial environments
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Support ACH solution engineering and mainframe application development efforts in a banking environment.
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Design, enhance, maintain, and troubleshoot COBOL-based mainframe applications.
Benefits & conditions
Are you willing to relocate?* What's your citizenship / employment eligibility?* In 150 characters or fewer, tell us what makes you unique. Try to be creative and say something that will catch our eye! 150 What experience or skills do you have that match the requirements of this position?* Desired Minimum Annual Salary or Hourly rate?* Do you have the legal right to work in the United States?* Will you now, or in the future, require sponsorship for employment visa status (e.g. H-1B visa status)?* Closest Metropolitan Area*, Invitation for Job Applicants to Self-Identify as a U.S. Veteran
- A "disabled veteran" is one of the following:
- a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or
- a person who was discharged or released from active duty because of a service-connected disability.
- A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.
- An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.
- An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.