Senior Mainframe Application Support Engineer – Deposits
Confirmed on the employer's own hiring board on Oct 18, 2026. First seen by Alion on Oct 15, 2026. FIS scores A on the Alion truth index.
Job Description
Millions of people interact with FIS-powered technology every day, often without realizing it. Behind those experiences are teams of innovators, problem solvers and collaborators working to make financial services more connected, efficient and accessible. Join us and help shape what’s next in fintech.
Role location
Jacksonville - Hybrid
About the role
As a Senior Mainframe Application Support Engineer - Deposits, you will provide advanced production support for banking deposit applications in an IBM mainframe environment. You will troubleshoot complex production incidents, support batch and online processing, investigate application and file-processing issues, and drive problems through resolution. You will partner with development, operations, project and business teams while serving as a subject matter expert for assigned applications.
Your key responsibilities
- Provide advanced production support for banking deposit applications, including batch processing, online systems, file transmissions and application recovery.
- Lead troubleshooting of complex production incidents, perform root cause analysis and drive corrective actions for recurring issues.
- Analyze job streams, dependencies, scheduling, abnormal job terminations and batch failures, and resolve complex file-processing issues.
- Partner with development, operations, project and business teams on implementations, enhancements and issue resolution.
- Maintain support, recovery and operational documentation, participate in on-call and major incident response activities, and mentor team members.
What you bring
Required qualifications
- 7+ years of experience supporting banking or financial applications in an IBM mainframe environment, with experience in deposit or transaction processing.
- Strong COBOL programming skills, including coding, application maintenance and debugging.
- Strong knowledge of z/OS, Job Control Language (JCL), Customer Information Control System (CICS), Time Sharing Option/Interactive System Productivity Facility (TSO/ISPF), batch processing and job scheduling.
- Experience with Virtual Storage Access Method (VSAM), sequential files, balancing and validation, and large-volume transaction processing.
- Strong production support and troubleshooting experience, including incident management, application recovery, root cause analysis and resolution of complex production issues.
Preferred qualifications
- Experience with DB2 and Structured Query Language (SQL) for querying and validating transaction data.
- Experience with mainframe change-management, promotion and release processes.
- Client-facing support experience, including working with operations teams and external clients.
The impact you’ll make
As a Senior Mainframe Application Support Engineer - Deposits, you will help maintain the stability and reliability of business-critical banking applications. You will apply deep mainframe and production-support expertise to complex incidents, recurring processing issues and application recovery. Through troubleshooting, documentation, knowledge sharing and mentoring, you will help strengthen operational reliability and support effective issue resolution.
What we offer you
At FIS, your career journey is yours to shape. We provide the tools, experiences and support to help you reach what's next.
Here’s what else we offer:
- Opportunities to make an impact in fintech
- Internal career growth opportunities
- Personal and professional learning
- Inclusive, diverse work environment
- Resources to give back to your community
Privacy Statement
FIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the Online Privacy Notice.
EEOC Statement
FIS is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, marital status, genetic information, national origin, disability, veteran status, and other protected characteristics. The EEO is the Law poster is available here supplement document available here
For positions located in the US, the following conditions apply. If you are made a conditional offer of employment, you will be required to undergo a drug test. ADA Disclaimer: In developing this job description care was taken to include all competencies needed to successfully perform in this position. However, for Americans with Disabilities Act (ADA) purposes, the essential functions of the job may or may not have been described for purposes of ADA reasonable accommodation. All reasonable accommodation requests will be reviewed and evaluated on a case-by-case basis.
Sourcing Model
Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.