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As400 Testing Jobs in Texas (NOW HIRING)

Tata Consultancy Services

Mainframe Developer

Plano, TX · On-site

$47.25 - $60.75/hr

Tata Consultancy Services is seeking a skilled Mainframe and AS400 Developer to design, develop ... testing, and production support for existing systems. • Work with batch jobs, file processing ...

Stevenstransport

IT Senior Developer

Dallas, TX · On-site

$54 - $71.25/hr

Designing, coding/developingand performing acceptance testing of all new and existing integrations ... AS400 * RPGLE, RPG Free * RDi * SQL * DB2 * Trouble shooting * Design * Project Management Work ...

SWBC

Data Integrity Representative

San Antonio, TX · On-site

$14 - $17.75/hr

Reviews Exception Report for discrepancies and update AS400, FiServ, or WebServices as needed to ... SWBC is a Substance-Free Workplace and requires pre-employment drug testing. Please note, SWBC does ...

SWBC

Data Integrity Representative

San Antonio, TX

$14 - $17.75/hr

Reviews Exception Report for discrepancies and update AS400, FiServ, or WebServices as needed to ... SWBC is a Substance-Free Workplace and requires pre-employment drug testing. Please note, SWBC does ...

Swbc

Data Integrity Representative

San Antonio, TX

$14 - $17.75/hr

Reviews Exception Report for discrepancies and update AS400, FiServ, or WebServices as needed to ... SWBC is a Substance-Free Workplace and requires pre-employment drug testing. Please note, SWBC does ...

Stevens Transport

IT Senior Developer

Dallas, TX · On-site

$54 - $71.25/hr

... acceptance testing of all new and existing integrations written on the AS/400 system • ... years of AS400 development experience Preferred : • Transportation industry experience • ...

Business Centric Technology

QA Lead

Irving, TX · On-site

$100K - $120K/yr

OMS, WMS, TMS * eCommerce & Digital platforms * iSeries / AS400 * API testing (Postman, SOAP UI) * SQL & database validation * CI/CD and DevOps-enabled testing Apply Today! CP# 8528

MSCCN

Assembler II 1st Shift - El Paso, TX

El Paso, TX · On-site

$17.88/hr

Assemblers perform correct assembly and accurate testing. Use established power checking procedures ... Forklift driver certification Experience with supply chain systems (AS400, MAPICS) Experience in ...

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How much do as400 testing jobs pay per hour?

As of Jul 18, 2026, the average hourly pay for as400 testing in Texas is $30.30, according to ZipRecruiter salary data. Most workers in this role earn between $16.70 and $41.22 per hour, depending on experience, location, and employer.

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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What cities in Texas are hiring for As400 Testing jobs? Cities in Texas with the most As400 Testing job openings:
As400 Testing jobs near you
Infographic showing various As400 Testing job openings in Texas as of July 2026, with employment types broken down into 5% Locum Tenens, 80% Full Time, 8% Part Time, 2% Contract, 2% Nights, and 3% Summer. Highlights an 96% Physical, 2% Hybrid, and 2% Remote job distribution, with an average salary of $63,021 per year, or $30.3 per hour.

Urgent Needs - AS400 /IBM i Infrastructure Analyst in Phoenix, AZ (priority) / NJ / NC / TX / FL / V

Komplete Teleservices

Plano, TX • On-site

Other

Posted 15 days ago

Job description

Note: 

Phoenix, Az being primary

candidates can work from
Plano, TX, Charlotte, NC, Richmond, VA, Jacksonville, FL, Pennington, NJ, Chicago, IL


AS400 /IBM i Infrastructure Analyst

As the AS400 (IBM i) Infrastructure Analyst you will be responsible for the administration, stability, performance, and security of the IBM i (AS/400) infrastructure. This role ensures high availability of critical business applications by managing system operations, capacity, upgrades, backup/recovery, and incident resolution, while working closely with application, database, and operations teams.

IBM i / AS400 System Administration

·        Administer, monitor, and support IBM i (AS/400) systems in production, development, and test environments.

·        Perform system configuration, upgrades, PTF management, and OS releases.

·        Manage system objects, libraries, user profiles, authorization lists, and security settings.

·        Monitor system performance, job queues, subsystems, disk usage, and system logs.

·        Manage high availability (HA) and disaster recovery (DR) solutions (e.g., PowerHA, MIMIX, iCluster).

·        Perform capacity planning and performance tuning.

·        Execute backup and recovery procedures and conduct regular restore testing.

Incident, Problem & Change Management

·        Troubleshoot and resolve system-level incidents and performance issues.

·        Support change management processes, including patching and infrastructure changes.

·        Work collaboratively with service management tools (e.g., ServiceNow).

Security & Compliance

·        Enforce IBM i security best practices, user access controls, and audit requirements.

·        Support internal and external compliance audits (SOX, PCI, etc.).

·        Monitor system access, review logs, and remediate vulnerabilities.

Automation & Continuous Improvement

·        Develop and maintain CL, RPG, or scripting solutions to automate operational tasks.

·        Identify and implement infrastructure improvements and optimization opportunities.

·        Create and maintain technical documentation, runbooks, and operational procedures. 

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