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As400 Testing Jobs (NOW HIRING)

Technogen, Inc.

Senior AS400 Developer

Dallas, TX · On-site

$54.25 - $71.50/hr

Senior AS400 Developer Location: Dallas, TX Duration: Long term Location: Dallas, TX (local ... Conduct thorough unit testing, system integration testing, and support user acceptance testing (UAT)

New

Spar Information Systems

AS400 Developer

Issaquah, WA · On-site

AS400 Developer Issaquah, WA - onsite The opportunity: Analyzes and develops iSeries code that ... Performs code reviews, unit testing, coordinates with development team members on development, and ...

Jobtailor

Senior Consultant, JDA MMS / AS400

Phoenix, AZ · On-site

$120 - $160/hr

Support AS400/IBM i batch processing, troubleshooting, and system performance optimization * Lead ... testing, and production support * Ensure data integrity, auditability, and accuracy across ...

New

Kyndryl

AS400 /IBM i Infrastructure Analyst

Phoenix, AZ

$63K - $121K/yr

  • Medical

  • Dental

  • Retirement

  • PTO

The Role As the AS400 (IBM i) Infrastructure Analyst you will be responsible for the administration ... Execute backup and recovery procedures and conduct regular restore testing. Incident, Problem ...

Clera

Senior JDA MMS / AS400 Consultant

Phoenix, AZ · Remote

$70 - $75/hr

About the Role We are seeking an experienced Senior JDA MMS / AS400 Consultant to join a large ... testing, and production support . * Drive system upgrades and lead production support efforts in ...

Kyndryl

AS400 /IBM i Infrastructure Analyst

Phoenix, AZ · On-site

$63K - $121K/yr

  • Medical

  • Dental

  • Retirement

  • PTO

The Role As the AS400 (IBM i) Infrastructure Analyst you will be responsible for the administration ... Execute backup and recovery procedures and conduct regular restore testing. Incident, Problem ...

Kyndryl

AS400 /IBM i Infrastructure Analyst

Phoenix, AZ · On-site

$63K - $121K/yr

  • Medical

  • Dental

  • Retirement

  • PTO

The Role As the AS400 (IBM i) Infrastructure Analyst you will be responsible for the administration ... Execute backup and recovery procedures and conduct regular restore testing. Incident, Problem ...

Kyndryl

AS400 /IBM i Infrastructure Analyst

Phoenix, AZ · On-site

$63K - $121K/yr

  • Medical

  • Dental

  • Retirement

  • PTO

The Role As the AS400 (IBM i) Infrastructure Analyst you will be responsible for the administration ... Execute backup and recovery procedures and conduct regular restore testing. Incident, Problem ...

Kyndryl

AS400 /IBM i Infrastructure Analyst

Phoenix, AZ · On-site

$63K - $121K/yr

  • Medical

  • Dental

  • Retirement

  • PTO

The Role As the AS400 (IBM i) Infrastructure Analyst you will be responsible for the administration ... Execute backup and recovery procedures and conduct regular restore testing. Incident, Problem ...

Kyndryl

AS400 /IBM i Infrastructure Analyst

Phoenix, AZ · On-site

$63K - $121K/yr

  • Medical

  • Dental

  • Retirement

  • PTO

The Role As the AS400 (IBM i) Infrastructure Analyst you will be responsible for the administration ... Execute backup and recovery procedures and conduct regular restore testing. Incident, Problem ...

Kyndryl

AS400 /IBM i Infrastructure Analyst

Phoenix, AZ

$63K - $121K/yr

  • Medical

  • Dental

  • Retirement

  • PTO

The Role As the AS400 (IBM i) Infrastructure Analyst you will be responsible for the administration ... Execute backup and recovery procedures and conduct regular restore testing. Incident, Problem ...

Infosys

AS400 Developer

Plano, TX · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... of code, testing techniques, and support activities to enrich the knowledge base and assist other similar projects Your contribution to the team: • A collaborative spirit and excellent ...

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All JobsAs400 Testing Jobs

As400 Testing information

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 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 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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As400 Testing jobs near you
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 AS400 Developer

Technogen, Inc.

Dallas, TX • On-site

$54.25 - $71.50/hr

Other

Posted 3 days ago

New

Job description

TECHNOGEN, Inc. is a Proven Leader in providing full IT Services, Software Development and Solutions for 15 years.

TECHNOGEN is a Small & Woman Owned Minority Business with GSA Advantage Certification. We have offices in VA; MD & Offshore development centers in India. We have successfully executed 100+ projects for clients ranging from small business and non-profits to Fortune 50 companies and federal, state and local agencies.


Hi,

Greetings of the day!

We are looking to Hire a Talented Professional for the below Job opportunity with one of our clients,

If you have any relevant candidate profiles, please share your updated resumes at your earliest convenience, and I'll be happy to provide more details about the role.

Position: Senior AS400 Developer

Location: Dallas, TX

Duration: Long term

Job Description:

Location: Dallas, TX (local candidate is preference)
Overview:
The AS400 Developer is responsible for the full software development lifecycle of core business applications. This includes analyzing requirements, writing high-quality code, optimizing database performance, and integrating legacy systems with modern web services or APIs.
Key Responsibilities
Write Code: Develop and modify application software using RPG III/IV, RPG LE, Free-Form RPG, and Control Language (CL).
Manage Databases: Design, maintain, and optimize DB2 for i databases using SQL, DDL, and DDS.
Modernize Systems: Convert legacy green-screen applications into modern, web-enabled interfaces or modern RPG architectures.
Integrate APIs: Build and consume RESTful web services to connect the AS400 system with external applications.
Troubleshoot Issues: Debug complex software anomalies, optimize long-running batch jobs, and resolve production critical errors.
Test Code: Conduct thorough unit testing, system integration testing, and support user acceptance testing (UAT).
Document Work: Create detailed technical specifications, system workflows, and operational runbooks.
Regards,
Surekha.V

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