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# Senior SYNON/AS400 Developer

- **Company:** Cognizant Technology Solutions Corporation
- **Location:** Hartford, CT, United States (Remote available)
- **Experience:** Expert
- **Salary:** $65,447.0 - $117,000.0
- **Contract:** Permanent contract
- **Skills:** IBM System I, Unit Testing, Computer Programming, IBM RPG (Programming Language), Regression Testing, Software Deployment, Software Engineering
- **Published:** August 23, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3363365718&tx=IT9285TTD&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* Strong experience working in AS400/IBM i development environments.
 * Hands-on expertise with RPGLE and RPGILE programming.
 * Proficiency in CLLE development and system-level programming.
 * Experience developing and maintaining applications using SYNON.
 * Ability to participate in the full software development lifecycle, including analysis, design, coding, testing, deployment, and production support.

This will help you stand out

 * Experience preparing technical estimates and solution designs.
 * Strong troubleshooting and defect-resolution skills.
 * Experience supporting QA, regression testing, and production deployments.
 * Ability to collaborate effectively with cross-functional technical and business teams.
 * Experience in post-production support and warranty-period activities.

## Description

As a Senior SYNON/AS400 Developer, you will make an impact by designing, developing, and supporting business-critical applications in an AS400 environment. You will be a valued member of the technology team, collaborating with business analysts, technical leads, quality assurance teams, and stakeholders to deliver high-quality solutions throughout the software development lifecycle.

In this role, you will:

 * Partner with business analysts and technical leads to clarify requirements and define technical solutions.
 * Analyze business needs and prepare technical designs, estimates, and development plans.
 * Develop, review, and enhance applications using AS400 technologies including RPGLE, RPGILE, CLLE, and SYNON.
 * Create and execute unit test plans, resolve defects, and support quality assurance and regression testing activities.
 * Support deployments, production releases, and post-implementation activities to ensure stable and successful solution delivery.

Work model

We strive to provide flexibility wherever possible. Based on this role's business requirements, this is a remote position open to qualified applicants in Richardson, TX. Regardless of your working arrangement, we are here to support a healthy work-life balance though our various wellbeing programs.

The working arrangements for this role are accurate as of the date of posting. These may change based on the project you are engaged in, as well as evolving business and client requirements. We will always be transparent about role expectations.


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