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Senior Mainframe Programmer Jobs in Florida (NOW HIRING)

Tech Tammina LLC

Sr Backend Java Developer

Tampa, FL · On-site

$113K - $147K/yr

Role: Sr Backend Java Developer Location: Tampa, FL Duration: 6 months C2H Rate: Market Need only ... Modernization - re-write mainframe legacy applications into modern Java-based microservices to ...

Ubertal Inc

Senior Systems Analyst

Tallahassee, FL · On-site

Work as a developer and subject matter expert to implement scalable solutions * Support data ... Experience translating between Mainframe technologies and .NET * Experience with data conversion ...

UAB

SYSTEMS PROGRAMMER II

Tampa, FL · On-site

$98K/yr

... mainframe computers, mini-computers and microcomputers supported by the department. * Functions as ... Individuals may report concerns or questions to UAB's Assistant Vice President and Senior Title IX ...

Rocket Companies

The Customer Solutions Engineer a highly skilled Mainframe Modernization Senior Consultant to provide technical support and/or leadership in the creation and delivery of technology solutions designed ...

Ubertal Inc

IT Support Technician

Tallahassee, FL · On-site

$20.50 - $28/hr

This role involves assisting with the maintenance and modernization of legacy mainframe systems ... Diagnose and resolve basic software issues and escalate complex problems to senior technical staff ...

Avani Technology Solutions, Inc.

Java Developer

Orlando, FL · On-site

$47.50 - $61.50/hr

ROLE: Sr. Java Developer Location: Orlando, FL Duration: 6+months (24 Month Project) Industry: GPS ... or other mainframe skills for use in legacy conversion reverse engineering * Ability to adapt ...

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Senior Mainframe Programmer information

What is the difference between Senior Mainframe Programmer vs Mainframe Developer?

AspectSenior Mainframe ProgrammerMainframe Developer
CredentialsTypically requires a mainframe programming certification and several years of experienceOften requires similar certifications and experience, focusing on coding and development
Work EnvironmentWorks primarily on legacy mainframe systems within financial, insurance, or government sectorsDevelops and maintains mainframe applications, often in similar industries
Employer & Industry UsageCommonly employed by large corporations with mainframe infrastructureUsed interchangeably with mainframe programmer, focusing on application development

The main difference between a Senior Mainframe Programmer and a Mainframe Developer is primarily experience level and scope. Senior Mainframe Programmers often have more responsibilities, including overseeing projects and mentoring junior staff, while Mainframe Developers focus on coding and application creation. Both roles require similar credentials and are vital in industries relying on legacy mainframe systems.

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What cities in Florida are hiring for Senior Mainframe Programmer jobs? Cities in Florida with the most Senior Mainframe Programmer job openings:
Senior Mainframe Programmer jobs near you
Infographic showing various Senior Mainframe Programmer job openings in Florida as of June 2026, with employment types broken down into 73% Full Time, and 27% Contract. Highlights an 77% In-person, 18% Hybrid, and 5% Remote job distribution.
Senior Developer

Senior Developer

Intercontinental Exchange Holdings, Inc.

Jacksonville, FL • On-site

$50.50 - $66.75/hr

Full-time

Posted 8 days ago

Job description

Overview

Job Purpose

The MSP Development community is at the core of MSP Mortgage Technology. Our team is responsible for enhancing, maintaining, and supporting both internal and clientfacing MSP functionality through efficient, highquality development practices that protect and strengthen the integrity of the MSP platform.

The MSP TOD CICS Team works closely with internal support groups and crossfunctional partners to understand business needs and deliver reliable, highperforming solutions. This role supports the full Software Development Lifecycle (SDLC), including design, development, testing, implementation, maintenance, and production support of mainframe applications.

Responsibilities

  • Design, develop, modify, and maintain CICS programs in accordance with business requirements and documented standards
  • Participate in all phases of the SDLC, ensuring timely and highquality delivery
  • Collaborate effectively with peers, crossfunctional teams, and business partners
  • Analyze and resolve complex technical issues, delivering scalable and efficient solutions
  • Support and maintain applications in a production environment, including oncall rotation
  • Serve as a technical lead, architect, project lead, or principal developer, as needed
  • Mentor and guide lessexperienced developers
  • Contribute to system, component, and data architecture discussions
  • Identify opportunities to improve tools, processes, and efficiencies while minimizing production risk
  • Perform other related duties as assigned

Knowledge and Experience

  • Bachelor's degree in Computer Science, Information Systems, or equivalent education and experience
  • 5+ years of experience in z/OS mainframe development
  • Strong experience with CICS COBOL, JCL, IDz, ISPW, REXX, and TSO
  • Solid understanding of systems analysis, application design, development, testing, and integration
  • Strong analytical and problemsolving skills
  • Ability to communicate effectively with both technical and nontechnical audiences
  • Proven ability to work independently and collaboratively in a fastpaced environment
  • Selfmotivated, proactive, and resultsoriented
  • Performs well under pressure and within tight deadlines
  • Adaptable, approachable, and committed to continuous learning

Preferred Knowledge and Experience 

  • Experience with Batch COBOL, Java/Java plugins, Assembler, or C*
  • Mortgage industry and MSP platform experience
  • Familiarity with FM/MSP production job flows and processes
  • Experience with production support and release management

Technical Skills

  • Mainframe Technologies: CICS, COBOL for z/OS, IDz, JCL, REXX, Assembler (plus)
  • Data & Tools: VSAM, DB2, ISPW source and release management
  • IDEs & Interfaces: IDz, TSO/ISPF
  • Utilities: IDCAMS, FileAID, XPEDITER, QUIKJOB, Librarian, RDz (Rational Suite)
  • Productivity Tools: Microsoft Word, Excel, PowerPoint, Visio
  • AI Tools: Claude Code, Microsoft Copilot
----------Intercontinental Exchange, Inc. is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to legally protected characteristics.Employment Type: FULL_TIME

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