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Mainframe Testing Jobs in Delaware (NOW HIRING)

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Mainframe Testing information

What is mainframe testing?

A Mainframe Testing job involves validating and verifying applications running on mainframe systems to ensure they function correctly, efficiently, and securely. Testers perform various types of testing, including functional, integration, regression, and performance testing, using tools like JCL, COBOL, DB2, and CICS. They analyze test results, identify defects, and collaborate with developers to resolve issues. Mainframe testers need knowledge of batch processing, databases, and system interactions to ensure seamless operations. The role is critical in industries like banking, insurance, and healthcare, where mainframes handle high-volume transactions.

What are the key skills and qualifications needed to thrive in mainframe testing?

To thrive in Mainframe Testing, you need strong analytical abilities, a solid understanding of mainframe environments and programming languages like COBOL, JCL, and experience with testing methodologies. Familiarity with tools such as IBM Mainframe, CA7/Endevor, and mainframe testing frameworks, as well as ISTQB certification, is highly valuable. Attention to detail, strong problem-solving skills, and effective communication are essential soft skills in this role. These competencies help ensure that complex mainframe systems are thoroughly tested, reliable, and meet business requirements.

What are some common challenges faced by professionals working in mainframe testing?

Professionals in Mainframe Testing often encounter challenges such as understanding legacy code, dealing with limited documentation, and adapting to the evolving integration of mainframe and modern systems. Testers must also effectively validate large volumes of data, ensure compatibility across interconnected applications, and manage tight release deadlines. Collaborating closely with developers, business analysts, and operations teams is essential for clarifying requirements and troubleshooting issues. Successfully overcoming these challenges requires persistence, a willingness to learn, and strong teamwork skills.

How to be a mainframe tester?

To become a mainframe tester, you should have a strong understanding of mainframe environments, including COBOL, JCL, and DB2, along with testing tools like IBM Rational or CA Test Data Manager. Gaining experience in software testing, scripting, and understanding mainframe architecture is essential, often supported by certifications such as IBM Certified Solution Developer. Attention to detail and the ability to work with legacy systems are important in this role.

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

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

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

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

Infographic showing various Mainframe Testing job openings in Delaware as of September 2026, with employment types broken down into 1% Internship, 1% As Needed, 84% Full Time, 11% Part Time, 2% Contract, and 1% Nights. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution.

Information Technology Specialist (Operating Systems)

Dover, DE • On-site

Criminal Investigation & Law Enforcement | IRS Careers
Public Administration • 10K+ employees

$74K/yr

Full-time

Posted 4 days ago


Internal Revenue Service rating

7.3

Company rating: 7.3 out of 10

Based on 131 frontline employees who took The Breakroom Quiz


Job description

WHAT IS INFORMATION TECHNOLOGY?
A description of the business units can be found at: https://www.jobs.irs.gov/about/who/business-divisions
  • Position(s) are to be filled in following area(s):
    • IT - Infrastructure Technology Operations-Mainframe Operations
REVIEW THE ADDITIONAL INFORMATION BELOW FOR FURTHER DETAILSQualifications:

Federal experience is not required. Experience may have been gained in the public sector, private sector or through Volunteer Service. One year of experience refers to full-time work; part-timework is considered on a prorated basis. To ensure full credit for your work experience, please indicate dates of employment by month/day/year, and indicate number of hours worked per week, on your resume.
You must meet the following requirements by the closing date of this announcement.
QUALIFICATION REQUIREMENTS: To qualify for this position, you must meet the qualification requirements outlined below:
MINIMUM REQUIREMENTS FOR GRADE 11 LEVEL (GS or Equivalent): You must have Information Technology related experience demonstrating each of the following six competencies: 1) Attention to Detail, 2) Customer Service, 3) Interpersonal Skills, 4) Problem Solving, 5) Teamwork and 6) Technical Competence.
SPECIALIZED EXPERIENCE: GS-11 LEVEL: You must have one year of specialized experience at a level of difficulty and responsibility equivalent to the GS-9 grade level in the Federal service. Specialized experience for this position includes:

  • Applying IT principles, concepts, methods, and practices to support, maintain, implement, troubleshoot, or make limited enhancements to IT systems, services, hardware, software, applications, scripts, interfaces, or related technology environments.
  • Performing computer projects, operational, or application-related assignments involving IT requirements and techniques, including identifying and resolving technical issues; supporting system, application, or code testing and configuration; preparing technical documentation; and supporting compliance with federal cybersecurity, privacy, or regulatory requirements.
  • Working with customers, users, stakeholders, or technical teams to gather information, clarify user needs, respond to technical support requests, resolve non-routine IT problems, and support IT operations, application needs, or system-related activities.
  • Monitoring or reviewing IT systems, service, or application performance to support availability, reliability, security controls, usability, and operational effectiveness in accordance with established policies and procedures.
  • Analyzing alternative approaches and recommending or supporting corrective actions for IT issues, including application errors, defects, configuration issues, or operational problems; escalating issues; and coordinating with others to implement solutions that support mission, security, and performance requirements.

MINIMUM REQUIREMENTS FOR GRADE 12 LEVEL UP (GS or Equivalent) You must have Information Technology related experience demonstrating each of the following nine competencies: 1) Attention to Detail, 2) Customer Service, 3) Decision Making, 4) Information Management, 5) Interpersonal Skills, 6) Oral Communication, 7) Problem Solving, 8) Team Work and 9) Technical Competence.
Specialized Experience GS-12 Level: You must have one year of specialized experience at a level of difficulty and responsibility equivalent to the GS-11 grade level in the Federal service. Specialized experience for this position includes:

  • Applying established IT principles, concepts, methods, and practices to support, maintain, implement, troubleshoot, or make limited enhancements to IT systems, services, hardware, software, applications, scripts, interfaces, or related technology environments.
  • Performing computer projects, operational, or application-related assignments involving IT requirements and techniques, including identifying and resolving technical issues.
  • Supporting system, application, or code testing and configuration; preparing technical documentation; and supporting compliance with federal cybersecurity, privacy, or regulatory requirements.
  • Working with customers, users, stakeholders, or technical teams to gather information, clarify user needs, respond to technical support requests, resolve non-routine IT problems, and support IT operations, application needs, or system-related activities.
  • Monitoring or reviewing IT systems, services, or application performance to support availability, reliability, security controls, usability, and operational effectiveness in accordance with established policies and procedures.
  • Analyzing alternative approaches and recommending or supporting corrective actions for IT issues including application errors, defects, configuration issues, or operational problems; escalating issues when appropriate; and coordinating with others to implement solutions that support mission, security, and performance requirements.
  • Analyzing and evaluating information technology systems, applications, or infrastructure to identify operational issues and recommend solutions or improvements.
  • Applying IT systems life cycle, testing, troubleshooting, or performance management principles to support the operation and maintenance of information technology systems.
  • Providing technical guidance or assistance to customers, team members or other stakeholders regarding information technology systems, requirements or issues.

AND
You must also meet the following requirement(s):

  • PERFORMANCE RATING: Current federal employees must have at least a fully successful or equivalent performance rating to receive consideration.
  • TIME AFTER COMPETITIVE APPOINTMENT (TACA): By the closing date (or if this is an open continuous announcement, by the cut-off date) specified in this job announcement, current civilian employees must have completed at least 90 days of federal civilian service since their latest non-temporary appointment from a competitive referral certificate, known as time after competitive appointment. For this requirement, a competitive appointment is one where you applied to and were appointed from an announcement open to "All US Citizens"
  • TIME IN GRADE (TIG): Federal employees must meet time-in-grade requirements. For positions above the GS-05,applicants must meet applicable time-in-grade requirements to be considered eligible. One year (52 weeks) at the next lower grade level is required to meet the time-in-grade requirements for the grade you are applying for. For positions at the GS-05, you cannot advance to the GS-05 if you have held a GS-02 in the past 52 weeks. There is no TIG restriction for GS-02, 03, or 04 positions.

For more information on qualifications please refer to OPM's Qualifications Standards.

Education:A college or university degree generally must be from an accredited (or pre-accredited) college or university recognized by the U.S. Department of Education. For a list of schools which meet these criteria, please refer to Department of Education Accreditation page.
FOREIGN EDUCATION: Education completed in foreign colleges or universities may be used to meet the requirements. You must show proof the education credentials have been deemed to be at least equivalent to that gained in conventional U.S. education program. It is your responsibility to provide such evidence when applying. Click here (Section 3, Explanation of Terms) or here for Foreign Education Credentialing instructions.
We recommend choosing an evaluator from a member organization of one of the following national associations of credential evaluation services: National Association of Credential Evaluation Services (NACES) or Association of International Credentials Evaluators (AICE).Employment Type: OTHER

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