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As400 Testing Jobs (NOW HIRING)

... load testing • API mocking and stubbing for AS400 simulation" "Technical Service Owner, with ability coordinate across customer stakeholders and guide project team, and with ability to provide ...

Senior Software Engineer, AS 400

Atlanta, GA · On-site

$117K - $155K/yr

Required : • Develops programs in an IBM AS400 environment using RPG and CL programming. • Ensures that programs can be integrated into different application systems. • Coordinates testing and ...

NET Core, AS400/IBM i, REST APIs, Salesforce integration, IBM MQ, API security, API Gateway, ETL, and API testing , combined with strong stakeholder management, Agile delivery, project/product ...

New

... system testing • Integration or interface Development • Collaborate with other members of the department Major System Support: • Friedman ERP • Varsity transportation • TL Ashford • ...

... testing Integration or interface Development Collaborate with other members of the department Major System Support: Friedman ERP Varsity transportation TL Ashford Gentran EDI Databases - DB2, SQL ...

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As400 Testing information

What is an AS400 Testing?

An AS400 Testing job involves evaluating applications running on the IBM AS400 (now IBM i) platform to ensure functionality, performance, and security. Testers work with RPG, COBOL, CL, and DB2-based applications, executing test cases, identifying bugs, and validating system outputs. They use manual and automated testing techniques, including unit testing, system testing, and regression testing. The role requires knowledge of AS400 commands, database structures, and business logic implementation.

What are the typical responsibilities and challenges of AS400 Testing?

AS400 Testing professionals are responsible for designing and executing test cases, validating data integrity, and ensuring that business applications on the AS/400 platform run as intended. A common challenge in this role is working with complex legacy code and systems that may lack thorough documentation, which requires testers to be resourceful and detail-oriented. Testers also collaborate closely with developers, business analysts, and end-users to understand requirements, troubleshoot issues, and verify fixes. The work environment often involves both independent analysis and teamwork, and there's ample opportunity to develop expertise in legacy modernization projects or transition into test lead or quality assurance roles.

What are the key skills and qualifications needed for AS400 Testing, and why are they important?

To thrive in AS400 Testing, you need a solid understanding of IBM AS/400 (iSeries) environments, RPG/COBOL programming languages, and knowledge of software testing methodologies. Familiarity with tools such as IBM Rational, Selenium, or other test automation frameworks, along with ISTQB certification, is often beneficial. Strong analytical thinking, problem-solving abilities, and clear communication skills help testers collaborate effectively and report findings. These competencies ensure the delivery of robust, high-quality business applications on legacy systems, minimizing risks and defects.

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Cities with the most As400 Testing job openings:

What are the most commonly searched types of As400 Testing jobs?

The most popular types of As400 Testing jobs are:

What states have the most As400 Testing jobs?

States with the most job openings for As400 Testing jobs include:

Infographic showing various As400 Testing job openings in the United States as of August 2026, with employment types broken down into 89% Full Time, 3% Contract, and 8% Nights. Highlights an 88% In-person, 6% Hybrid, and 6% Remote job distribution.

Senior IBM i / AS400 Developer - Voyager Plus (OTR)

Apex Systems

Hopkins, MN • On-site

Other

Medical, Dental, Vision, Life, Retirement

Posted 5 days ago


Job description

Job#: 3044837
Job Description:
Senior IBM i / AS400 Developer - Voyager Plus (OTR)
Location: Hopkins, Minnesota (Hybrid)
Role Overview
We are seeking an experienced Senior IBM i / AS400 Developer to support and modernize the Voyager Plus Over-the-Road (OTR) platform. This role will provide continuity for a business-critical application that supports authorization, business data management, transaction processing, and settlement operations. The ideal candidate will bring deep RPGLE, CL, IBM i, and SQL experience, along with the ability to partner across business and technology teams to sustain current operations while supporting modernization efforts.
Key Responsibilities
  • Provide production support and on-call coverage for Voyager Plus (OTR) applications.
  • Support and enhance authorization, business data management, and settlement system capabilities.
  • Analyze, troubleshoot, and resolve application defects, production issues, batch/process failures, and data issues.
  • Develop, test, debug, and maintain clean, efficient, and reliable RPGLE, CL, and SQL-based solutions.
  • Support MQ connectivity, file transfers, certificate-related issues, deployment readiness, and environment stability.
  • Lead or support project delivery from requirements through implementation, including estimation, design, development, testing, and deployment.
  • Partner with business stakeholders and technology teams to define requirements and deliver reliable solutions.
  • Ensure software changes meet quality, functionality, security, compliance, and operational standards.
  • Support CI/CD, GitLab, and ARCAD-based change management practices to improve release consistency and deployment quality.
  • Maintain documentation and support procedures needed for long-term platform sustainability.
  • Share application, platform, and business process knowledge with the team to improve resiliency.
Required Qualifications
  • 10+ years of hands-on experience programming in RPGLE / Free Format RPG.
  • 10+ years of experience with CL programming on IBM i / AS400 platforms.
  • Strong experience with screen and subfile development.
  • Strong working knowledge of embedded SQL within RPGLE applications.
  • Hands-on experience using IBM Rational Developer for i (RDi).
  • Experience supporting production applications in a business-critical environment.
  • Working knowledge of GitLab for source control, branching, merge requests, and deployment workflows.
  • Experience using ARCAD change management software integrated with GitLab.
  • Knowledge of Connect:Direct file transfer processes and operational support.
  • Understanding of digital certificates and secure application connectivity.
  • Ability to analyze authorization, business data management, settlement, batch, and integration processes.
Preferred Qualifications
  • Experience supporting modernization efforts involving legacy IBM i / AS400 applications and modern platforms.
  • Understanding of Redis-based caching patterns or data synchronization processes.
  • Experience with CI/CD automation practices for legacy and modernized application delivery.
  • Familiarity with disaster recovery exercises, outage recovery, and production resiliency practices.
  • Experience working in environments with high transaction volume and operational reliability requirements.
  • Ability to mentor junior engineers and support knowledge transfer across the team.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.
Everforth Apex uses a virtual recruiter as part of the application process. Click for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at
Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.
Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.
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