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Mainframes Developer Jobs in Jacksonville, FL (NOW HIRING)

Demonstrated ability to adapt to different mainframe/client environments and mainframe tool sets. Bonus if you have: * Minimum of 10 years experience working on FIS Systematics applications with ...

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Mainframes Developer information

See Jacksonville, FL salary details

$44.5K

$103.6K

$153.8K

How much do mainframes developer jobs pay per year?

As of Jun 9, 2026, the average yearly pay for mainframes developer in Jacksonville, FL is $103,632.00, according to ZipRecruiter salary data. Most workers in this role earn between $83,400.00 and $120,500.00 per year, depending on experience, location, and employer.

What is the difference between Mainframes Developer vs Mainframes Analyst?

AspectMainframes DeveloperMainframes Analyst
Required CredentialsTypically a degree in Computer Science or related field; certifications like IBM Certified SpecialistSimilar credentials; often holds certifications in mainframe systems and analysis
Work EnvironmentDevelops, codes, and tests mainframe applications in a software development settingAnalyzes existing mainframe systems, gathers requirements, and supports system improvements
Employer & Industry UsageUsed by banks, insurance companies, and large enterprises for application developmentEmployed in similar industries for system analysis, troubleshooting, and process optimization

While both roles require knowledge of mainframe systems and similar credentials, Mainframes Developers focus on creating and maintaining mainframe applications, whereas Mainframes Analysts analyze existing systems to improve performance and efficiency. Both roles are vital in large enterprise IT environments.

What job categories do people searching Mainframes Developer jobs in Jacksonville, FL look for? The top searched job categories for Mainframes Developer jobs in Jacksonville, FL are:
What cities near Jacksonville, FL are hiring for Mainframes Developer jobs? Cities near Jacksonville, FL with the most Mainframes Developer job openings:
Infographic showing various Mainframes Developer job openings in Jacksonville, FL as of June 2026, with employment types broken down into 34% Full Time, and 66% Contract. Highlights an 94% In-person, and 6% Hybrid job distribution, with an average salary of $103,632 per year, or $49.8 per hour.
Software Engineer Lead - Tandem Mainframe COBOL

Software Engineer Lead - Tandem Mainframe COBOL

FIS

Jacksonville, FL • On-site

$45.50 - $58.25/hr

Full-time

Posted 25 days ago


FIS Global rating

7.3

Company rating: 7.3 out of 10

Based on 8 frontline employees who took The Breakroom Quiz

133rd of 186 rated software companies


Job description

Job Description

As the world works and lives faster, FIS is leading the way. Our fintech solutions touch nearly every market, company and person on the planet. Our teams are inclusive and diverse. Our colleagues work together and celebrate together. If you want to advance the world of fintech, we'd like to ask you: Are you FIS?

About the role:

We are looking for an experienced COBOL/Tandem programmer to join the PHASE3 team.

As a Software Engineer Lead - Tandem Mainframe COBOL, you will be responsible for

  • Develop core versions of software applications for sale to external clients.

  • Identify client purchasing requirements and technical specifications through Product Management and/or client representatives.

  • Interacts with engineering groups to assist in design changes to equipment and/or software.

  • Train and communicate with clients on systems applications.

About the team:
The Position is in FIS Securities Processing (Phase3) Product. Phase3 is a real-time order-to-settlement securities processing system used by broker/dealers and correspondent clearings firms.

What you will be doing:

  • Work on enhancement and Support projects for the Product.

  • Support FIS solutions and ensure the quality and utilization of FIS products satisfy client needs.

  • Recreate, document client issues, and troubleshoot problems to support product quality.

What you will need:

  • Strong understanding and solid work experience on COBOL, TACL, Guardian procedure calls

  • Strong understanding and solid work experience on Nonstop Pathway, SQL/MP, Tandem Utilities

  • Strong Analytical and Problem-solving skills with working experience on the above skill set

  • Able to take the initiative and work independently or in a team.

  • Experience in documenting SOPs to support daily operations.

  • Domain expertise in Fintech, especially around Brokerage and Clearance

  • Nice to have experience in C, C++, SQL/MX, and NonStop OSS environments.

  • Excellent communicator - ability to discuss technical and commercial solutions to internal and external parties and adapt depending on the technical or business focus of the discussion.

  • Attention to detail - track record of authoring high-quality documentation.

  • Organized approach - manage and adapt priorities according to client and internal requirements.

  • Self-starter but team mindset - work autonomously and as part of a global team.

  • A bachelor's degree in business administration, computer science or other related discipline or the equivalent combination of education, training, or work experience.

What we offer you:

  • A multifaceted job with a high degree of responsibility and a broad spectrum of opportunities

  • A broad range of professional education and personal development possibilities - FIS is your final career step!

  • A competitive salary and benefits

  • A variety of career development tools, resources and opportunities


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.

#pridepass


FIS logo

About FIS

Sourced by ZipRecruiter

FIS is a leader in technology and services that helps businesses and communities thrive by advancing commerce and the financial world. For over 50 years, FIS has continued to drive growth for clients around the world by creating tomorrow’s technology, solutions and services to modernize today’s businesses and customer experiences. By connecting merchants, banks and capital markets, we use our scale, apply our deep expertise and data-driven insights, innovate with purpose to solve for our clients’ future, and deliver experiences that are more simple, seamless and secure to advance the way the world pays, banks and invests. Headquartered in Jacksonville, Florida, FIS employs more than 55,000 people across 50+ countries, dedicated to helping our clients be ahead of what’s next. FIS offers more than 450 solutions and processes over $75b of transactions around the planet. FIS is a Fortune 500® company and is a member of Standard & Poor’s 500® Index.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Jacksonville , FL, US

Year founded

1968

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