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Junior Mainframe Jobs in Delaware (NOW HIRING)

Job Title Mainframe Sr. Advisor About your role: At Fiserv, we are dedicated to transforming ... Mentor and provide technical guidance to junior developers and team members. * Drive innovation and ...

The Role We are seeking a skilled Mainframe Logical Security Engineer to design, implement, and ... your career, from Junior System Administrator to Architect. We have opportunities for Cloud ...

The Role We are seeking an experienced Mainframe z/VM & Linux Engineer to support IBM Z ... your career, from Junior System Administrator to Architect. We have opportunities for Cloud ...

Selenium, Automation, Java Coding exp is must, API Automation, Mainframe Testing, TOSCA * Design ... Perform code reviews and mentor junior QA automation engineers. * Collaborate with developers ...

Junior Mainframe information

What is the difference between Junior Mainframe vs Mainframe Developer?

AspectJunior MainframeMainframe Developer
CredentialsBasic certifications, entry-level experienceAdvanced certifications, several years of experience
Work EnvironmentSupport and maintenance tasks, learning-focusedDesign, development, and optimization of mainframe applications
Employer UsageEntry-level roles in finance, government, and large enterprisesSenior roles with more responsibility in similar industries

Junior Mainframe roles are typically entry-level, focusing on support and learning, while Mainframe Developers handle complex development tasks. The main difference lies in experience, responsibilities, and skill level, with Junior Mainframe positions serving as a stepping stone toward becoming a Mainframe Developer.

What are the most commonly searched types of Mainframe jobs in Delaware?

The most popular types of Mainframe jobs in Delaware are:

What are popular job titles related to Junior Mainframe jobs in Delaware?

For Junior Mainframe jobs in Delaware, the most frequently searched job titles are:

What job categories do people searching Junior Mainframe jobs in Delaware look for?

The top searched job categories for Junior Mainframe jobs in Delaware are:

What cities in Delaware are hiring for Junior Mainframe jobs?

Cities in Delaware with the most Junior Mainframe job openings:

Infographic showing various Junior Mainframe job openings in Delaware as of August 2026, with employment types broken down into 82% Full Time, 5% Part Time, and 13% Contract. Highlights an 81% Physical, 8% Hybrid, and 11% Remote job distribution.

Mainframe Sr. Advisor

Wilmington, DE

$121K - $193K/yr

Full-time

Posted 13 days ago


Job description

Calling all innovators - find your future at Fiserv.

We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv.

Job Title

Mainframe Sr. Advisor

About your role:
At Fiserv, we are dedicated to transforming financial services technology to benefit our clients. As a Software Development Engineering - Sr Advisor I, you will play a critical role in leading the design, development, and maintenance of high-quality software applications. You will work with cross-functional teams to deliver solutions that align with our business goals and client needs.

What you'll do:

  • Provide leadership and expertise in the design, development, and implementation of software applications to support Fiserv's business goals.

  • Collaborate with cross-functional teams to gather requirements and translate them into technical specifications.

  • Perform advanced coding, testing, and debugging of applications to ensure optimal performance.

  • Maintain and improve existing codebases and lead peer review processes.

  • Mentor and provide technical guidance to junior developers and team members.

  • Drive innovation and best practices within the software development team.

  • Responsibilities listed are not intended to be all-inclusive and may be modified as necessary.

Experience you'll need to have:

  • 10+ years of experience in software development

  • 10+ years of experience in Cobol

  • 8+ years experience with IBM tools, monitoring tools, RMF, DB2 utilities, Platinum Detector, etc

  • 10+ years of an equivalent combination of educational background, related experience, and/or military experience

Experience that would be great to have:

  • Experience in the financial services industry

Salary Range

$121,125.00 - $193,800.00

These pay ranges apply to employees in New Jersey and New York. Pay ranges for employees in other states may differ.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

For incentive eligible associates, the successful candidate is eligible for an annual incentive opportunity which may be delivered as a mix of cash bonus and equity awards in the Company's sole discretion.

Thank you for considering employment with Fiserv. Please:

  • Apply using your legal name
  • Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

Our commitment to Equal Opportunity:

Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.

If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contactAskHR.US@fiserv.com. Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv's Disability Accommodation Policy for additional information.

Note to agencies:

Fiserv does not accept resume submissions from agencies outside of existing agreements.Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.

Warning about fake job posts:

Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.