REXX Developer Jobs

1 job found

3mo ago

Senior Mainframe Developer

Citi Jacksonville, FL

Jacksonville, FL

3mo ago Closed

$114k - $171k/yr Full time Senior CICS COBOL

This position is no longer accepting applications (closed May 8, 2026).

Job Description

This senior level position at Citi is based onsite in Jacksonville, FL, and focuses on designing and deploying new or revised mainframe applications in collaboration with the Technology team, while leading applications analysis and programming efforts.

Location

Jacksonville, Florida, United States (onsite)

Compensation

$113,840.00 - $170,760.00 per year

Responsibilities

Collaborate with multiple management teams to align functional integrations with business goals, identifying system enhancements needed to launch new products and drive process improvements
Tackle high impact and complex program issues by thoroughly evaluating business and system processes and applying industry standards
Apply deep expertise in applications development to ensure designs align with the overall architecture blueprint
Leverage advanced knowledge of system flow to establish coding, testing, debugging, and deployment standards
Build comprehensive understanding of how architecture and infrastructure interact to achieve business objectives
Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
Act as an advisor or coach to mid-level developers and analysts, coordinating workload as needed
Assess risk in business decisions, uphold Citi's reputation and asset protection by ensuring compliance with laws and policies, applying ethical judgment, and transparently escalating and managing control issues

Requirements

5+ years of IBM mainframe development experience
Experience building batch and online programs in Cobol
Familiarity with IBM utilities and mainframe tools and data structures such as Fileaid, Rexx, JCL, CICS, Changeman, Github, Expediter, TSO/ISPF, VSAM, and DB2
2+ years of experience using AI tools such as Devin AI and CoPilot
Extensive experience in system analysis and software application programming
Proven history of managing and delivering successful projects
Subject Matter Expert in at least one area of Applications Development
Ability to adjust priorities quickly as circumstances dictate
Demonstrated leadership and project management capabilities
Clear and concise written and verbal communication
Minimum experience: 2 years
Education: Bachelor’s degree or equivalent experience

Technologies

Cobol
Fileaid
Rexx
JCL
CICS
Changeman
Github
Expediter
TSO/ISPF
VSAM
DB2
IBM utilities
Devin AI
CoPilot

Benefits

Discretionary and formulaic incentive and retention awards
Medical, dental and vision coverage
401(k) retirement plan
Life, accident, and disability insurance
Wellness programs
Paid time off for vacation and sick leave
Paid holidays

Employment Details

Time type: Full time
Job family group: Technology
Job family: Applications Development

Location and Posting

Primary location: Jacksonville, Florida, United States

Anticipated posting close date: Apr 12, 2026

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