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As400 Developer Jobs in Houston, TX (NOW HIRING)

Prophecy Technologies

AS/400 Developer

Houston, TX · On-site

Responsible for developing, maintaining, enhancing, and supporting business applications running on the IBM AS400 (IBM i) platform. This role involves working closely with business stakeholders ...

ettain group

iSeries Developer

Houston, TX

Qualifications Job Requirements Must be strong with RPG programming Must have experience with IBM AS/400 Must be strong with SQL Nice to have experience with DB2 Job Key Words AS400, RPG, SQL, DB2 ...

ettain group

iSeries Developer

Houston, TX · On-site

Company Description • Work for a great company that is an engineering, construction, technical ... • AS400, RPG, SQL, DB2 Additional Information Please send your application online under ...

Addison Group

ERP Development Lead

Houston, TX · Remote

$70 - $75/hr

The organization needs a hands-on developer and application owner capable of understanding existing ... Analyze existing code and business processes within the AS400 environment * Develop and maintain ...

Tailored Brands

Sr Data Engineer

Houston, TX · On-site

$118K - $142K/yr

We currently have an exciting opportunity for Sr Data Engineer to join our Tailored Technology team ... AS400, SQL Server, Salesforce and external partner platforms using API's, AWS S3, and GCP buckets ...

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As400 Developer information

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How much do as400 developer jobs pay per hour?

As of Aug 14, 2026, the average hourly pay for as400 developer in Houston, TX is $52.41, according to ZipRecruiter salary data. Most workers in this role earn between $47.93 and $55.77 per hour, depending on experience, location, and employer.

How much do AS400 developers make?

AS400 developers typically earn between $70,000 and $110,000 annually, depending on experience, location, and certifications. Senior roles or those with specialized skills in RPG or CL programming may command higher salaries, especially in industries like finance or healthcare that rely heavily on legacy systems.

What does an AS400 developer do?

A typical day for an AS400 Developer involves writing, testing, and troubleshooting code in RPG, COBOL, or CL for business-critical applications running on IBM iSeries systems. Developers often work closely with business analysts, system administrators, and other IT professionals to gather requirements, implement system enhancements, and ensure data integrity within DB2 databases. Daily tasks may also include resolving production issues, performing regular maintenance, and participating in code reviews or deployment planning. Collaborative work and clear communication are common, as developers typically play an integral role in supporting both legacy and modernized business processes.

What are the key skills and qualifications needed to thrive as an AS400 developer?

To thrive as an AS400 Developer, you need strong skills in RPG, COBOL, or CL programming languages, knowledge of IBM iSeries/AS400 systems, and typically a degree in computer science or related field. Familiarity with DB2 databases, SQL, and tools like Turnover or Aldon for change management and version control is highly valued, and certifications in IBM technologies are beneficial. Strong problem-solving abilities, attention to detail, and effective communication help developers collaborate with cross-functional teams and resolve technical issues efficiently. These competencies ensure reliable business application support, seamless integration with enterprise systems, and success in maintaining legacy environments.

How to become an AS400 developer?

To become an AS400 developer, you should gain proficiency in IBM iSeries (AS/400) systems, learn programming languages such as RPG, COBOL, or CL programming, and develop skills in database management and system administration. Earning relevant certifications and gaining experience through training or entry-level positions can also enhance your qualifications.

Is AS400 still in demand?

AS400 developers are still in demand in industries that rely on legacy systems, such as banking, manufacturing, and government. Many organizations seek professionals with skills in RPG, CL, and IBM i environments to maintain and upgrade their AS400 systems, though the overall demand has decreased as companies modernize their IT infrastructure.

What are the most commonly searched types of As400 Developer jobs in Houston, TX?

The most popular types of As400 Developer jobs in Houston, TX are:

What are popular job titles related to As400 Developer jobs in Houston, TX?

For As400 Developer jobs in Houston, TX, the most frequently searched job titles are:

What job categories do people searching As400 Developer jobs in Houston, TX look for?

The top searched job categories for As400 Developer jobs in Houston, TX are:

As400 Developer jobs near you
Infographic showing various As400 Developer job openings in Houston, TX as of August 2026, with employment types broken down into 86% Full Time, 7% Contract, and 7% Nights. Highlights an 86% In-person, 7% Hybrid, and 7% Remote job distribution, with an average salary of $109,006 per year, or $52.4 per hour.

AS/400 Developer

Prophecy Technologies

Houston, TX • On-site

Full-time

Posted 15 days ago

Job description

Role Overview:
Responsible for developing, maintaining, enhancing, and supporting business applications running on the IBM AS400 (IBM i) platform. This role involves working closely with business stakeholders, analysts, and technical teams to deliver efficient, reliable, and high-quality software solutions.
Key Responsibilities:
  • Develop and maintain applications using RPG III, RPG IV (RPGLE), CLLE, and SQLRPGLE.
  • Analyze business requirements and provide technical solutions.
  • Design, code, test, and implement IBM i applications.
  • Develop and maintain DB2/400 database objects, files, views, and stored procedures.
  • Perform application support, troubleshooting, and root cause analysis for production issues.
  • Create and execute unit test cases and support UAT activities.
  • Monitor scheduled jobs, batch processes, and system performance.
  • Work with source control and change management tools.
  • Prepare technical documentation and support knowledge transfer activities.
  • Collaborate with cross-functional teams for enhancements and system integrations.
  • Ensure compliance with organizational coding and security standards.

Required Skills:
  • AS400/iSeries-based application development, support and enhancement.
  • COBOL & AS400/iSeries architecture using ILE (COBOL, RPGLE, CLLE, QS36) + IBM DB2 (SQL, SPs, query optimization, green screen) with deep legacy modernization expertise.
  • ILE modernization & AS400 performance optimization, including refactoring, tuning, and production stability.
  • Strong experience with IBM Liberty (WebSphere Liberty) & WebSphere in hybrid legacy-modern architectures.
  • Advanced Unix/Linux proficiency (scripting, job control, cross-platform support).
  • Expertise in IBM MQ (ILE MQ Series) & XML integration, including SSIS-based messaging workflows.
  • Proven ability to architect scalable, high-performance, mission-critical systems bridging legacy and modern platforms.
  • Strong analytical and problem-solving skills with the ability to gather, refine, and convert business requirements into functional requirements and working production code.
  • Demonstrable ability to deliver high quality work in an iterative development model.
  • Excellent verbal and written communication skills.
  • Demonstrated ability to work independently and within a team.
  • Great work ethic - meet deadlines, on-time, conscientious.
  • Creative, "out of the box" thinker for application solutions.
  • AS400_CLP.

Qualifications:
  • 12+ years of AS400/iSeries-based application development, support and enhancement experience.
  • 8+ years COBOL & AS400/iSeries architecture using ILE (COBOL, RPGLE, CLLE, QS36) + IBM DB2.
  • 8+ years' experience in ILE modernization & AS400 performance optimization.
  • 3+ years of strong experience with IBM Liberty (WebSphere Liberty) & WebSphere in hybrid legacy-modern architectures.

Preferred Skills:
  • Test-driven development.

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