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As400 Testing Jobs (NOW HIRING)

Purple Drive

AS400 Developer

Atlanta, GA · On-site

POSITION SUMMARY We are seeking an experienced AS400 Developer for a 6-month contract position ... Serve as expert technical resource to programming staff in program development, testing, and ...

Artech

AS400 Developer

Plano, TX · On-site

$35 - $55/hr

Experience collaborating with business analysts, testers, and infrastructure teams. Day-to-Day Responsibilities * Develop, enhance, and maintain applications on mainframe and AS400 environments.

Veracity

AS400 Developer

Pompano Beach, FL · On-site

AS400 Developer Job Location: Coral Springs, FL Full Time Key Technology: IBM iSeries, AS400, RPGLE ... Develop estimates for design, development, and unit testing of application functionality for the ...

Nava Software Solutions

AS400 Admin

Mebane, NC · On-site

AS400 Admin Location: Mebane, NC (5 Days Onsite) Duration: 6-12 months Key Responsibilities ... Participate in disaster recovery planning and testing. Qualifications: * Bachelor's degree in ...

Veracity

AS400 Developer

Coral Springs, FL · On-site

AS400 Developer Job Location: Coral Springs, FL Full Time Key Technology: IBM iSeries, AS400, RPGLE ... testing of application functionality for the assignment. • Requirement Understanding through ...

NAVA Software Solutions

AS400 Admin

Mebane, NC · On-site

AS400 Admin Location: Mebane, NC (5 Days Onsite) Duration: 6-12 months Key Responsibilities ... Participate in disaster recovery planning and testing. Qualifications: * Bachelor's degree in ...

TestingXperts

MQ Series with AS400

Monroeville, PA · On-site

My name is Suneetha from Testing Xperts, we are a global staffing, consulting and technology ... MQ Series with AS400 Location: Monroeville, PA Must Have Skills (Top 3 technical skills only) * 1. ...

Valley Power Systems

AS400 Operator

Rialto, CA · On-site

The AS400 Operator will be responsible for helping with AS400 Operations and Network Helpdesk, as ... We are regulated by the department of transportation and will be conducting random drug testing at ...

Valley Power Systems, Inc.

AS400 Operator

Rialto, CA · On-site

The AS400 Operator will be responsible for helping with AS400 Operations and Network Helpdesk, as ... We are regulated by the department of transportation and will be conducting random drug testing at ...

Atria Group LLC

Sr. AS400 Developer

Milwaukee, WI

... testing, integration, and implementation, and management consulting services to various clients ... Hands on experience in AS400 technologies. COBOL knowledge is primarily looked for * Minimum 6-7 ...

Valley Power Systems

AS400 Operator

Rialto, CA · On-site

The AS400 Operator will be responsible for helping with AS400 Operations and Network Helpdesk, as ... We are regulated by the department of transportation and will be conducting random drug testing at ...

TestingXperts

MQ Series with AS400

Jersey City, NJ · On-site

Company Description TestingXperts is a Specialist QA & Software Testing Company, and an Independent ... MQ Series with AS400 Location: Basking Ridge, NJ Duration: 6+ Months Job Details: Contribute in ...

Georgia IT Inc

AS400 Developer

Renton, WA · On-site

AS400 Developer Work Location: Renton, WA Duration - 6 months iSeries developer - Minimum 5 years ... Do unit testing and integration testing. * Impact analysis, coding and unit testing for problems ...

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All JobsAs400 Testing Jobs

As400 Testing information

What are some typical responsibilities and challenges associated with an AS400 Testing position?

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 is an AS400 Testing job?

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 key skills and qualifications needed to thrive in the As400 Testing position, 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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As400 Testing jobs near you
Infographic showing various As400 Testing job openings in the United States as of June 2026, with employment types broken down into 100% As Needed. Highlights an 96% Physical, 2% Hybrid, and 2% Remote job distribution.

AS400 Developer

Purple Drive

Atlanta, GA • On-site

Other

Posted 13 days ago

Job description

Overview:
POSITION SUMMARY
We are seeking an experienced AS400 Developer for a 6-month contract position. This senior-level role requires extensive hands-on experience with IBM AS400 systems and a comprehensive understanding of retail business environments. The ideal candidate will serve as a technical expert and team lead for complex computer applications while working directly with business stakeholders to deliver innovative software solutions.
RESPONSIBILITIES
TECHNICAL LEADERSHIP & DEVELOPMENT
  • Act as the highest level technical resource as an individual contributor and/or team lead for complex computer applications and initiatives
  • Lead complex multiple modeling, simulations, and analysis efforts
  • Plan, perform, and act as the escalation point for complex platform designs, coding, and testing
  • Serve as expert technical resource to programming staff in program development, testing, and implementation processes
  • Drive completion of all phases of application development from analysis through implementation
APPLICATION DESIGN & IMPLEMENTATION
  • Analyze business requirements and design applications using SQLRPGLE on IBM AS400 platform
  • Prepare detailed design specifications from which programs will be written, coded, tested, debugged, and documented
  • Perform analysis, design, coding, unit testing, and implementation dealing with customers
  • Create and maintain applications with varying degrees of complexity
  • Utilize thorough understanding of available technology, tools, and existing designs
COMPLEX PROBLEM SOLVING & ANALYSIS
  • Work on the most complex problems where analysis of situations or data requires evaluation of intangible variance factors
  • Utilize technology to solve problems and provide software solutions with varying degrees of complexity
  • Work directly with department users to innovate and improve operations processes
  • Handle situations requiring evaluation of multiple complex variables and factors
PRODUCTION SUPPORT & MAINTENANCE
  • Provide production support experience for critical AS400 systems
  • Monitor and maintain system performance using Visual Explain and performance tools
  • Troubleshoot and resolve complex technical issues in production environments
  • Ensure system reliability and optimal performance
DEVELOPMENT TOOLS & TECHNOLOGIES
  • Utilize IBM Rational Developer for i (RDi) for source code development, debugging, and maintenance
  • Work with source control software (Aldon) on IBM AS400 platform
  • Apply knowledge of Visual Explain and performance optimization tools
  • Implement best practices for AS400 development and maintenance
QUALIFICATIONS
REQUIRED EXPERIENCE
  • 5+ years of AS400 Production Support experience
  • 4+ years of Retail industry experience
  • Strong background in Analysis, Design, Coding, Unit Testing, and Implementation
  • Extensive hands-on experience with the following skill set:
    • RentalMan
    • RPG and RPGLE programming
    • CL (Control Language)
    • CLLE (Control Language Extended)
    • DB400 database management
    • SQLRPGLE development
    • ILE (Integrated Language Environment) concepts
TECHNICAL SKILLS
AS400/IBM i Platform:
  • Advanced RPG and RPGLE programming
  • CL and CLLE scripting and programming
  • DB400 database design and management
  • SQLRPGLE development and optimization
  • ILE concepts and implementation
  • IBM Rational Developer for i (RDi)
  • Source control software (Aldon)
  • Visual Explain and performance tuning tools
Development Methodologies:
  • Full Software Development Life Cycle (SDLC)
  • Agile development methodologies
  • Requirements analysis and design
  • Unit testing and debugging
  • Code review and quality assurance processes
Business Domain:
  • Retail industry knowledge and experience
  • Understanding of retail business processes
  • Experience with point-of-sale systems
  • Knowledge of inventory management systems
  • Understanding of retail data flows and reporting

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