IBM i System/36 Developer - Remote - FS462

Fresche Solutions Inc.; Franklin (MA); Remote; USD 110,000 - 165,000; Full time

Job summary

Fresche Solutions Inc. is seeking experienced IBM i System/36 Developers to modernize legacy System/36 applications, converting OCL to CL and RPG II to RPG IV/ILE, while preserving business functions.

You will analyze applications, perform remediation, and validate functionality through testing, coordinating with stakeholders and QA to ensure modernization success.

This role supports a North America–based, work-from-anywhere model with collaborative delivery across modernization projects.

Qualifications

• Experience in IBM System/36 environments.
• Strong OCL experience and conversion to CL.
• Proven RPG II development and maintenance background.
• Experience converting RPG II to RPG IV / ILE RPG.

Responsibilities

• Analyze existing System/36 applications, job streams, menus, and screen flows.
• Convert OCL programs to CL.
• Convert RPG II applications to RPG IV / ILE RPG while preserving functionality.
• Remediate converted code for maintainability and performance.
• Perform unit and integration testing and support UAT.

Skills

IBM System/36

OCL

RPG II

RPG IV / ILE

OCL to CL

Batch processing

Job scheduling

Legacy modernization

Tools

IBM i tooling

Source control

Change management

Job description

Why Join Fresche? At Fresche Solutions, we don’t just maintain legacy systems; we transform them. For over a decade, we've been the leading partner for IBM i modernization and innovation. We offer a true work-from-anywhere (North America) model, prioritizing work-life balance and a culture where our values aren't just posters on a wall, they guide every technical decision we make.

Position Summary

We are seeking experienced IBM i System/36 Developers to support the modernization of legacy IBM System/36 applications. The successful candidates will be responsible for analyzing existing applications, converting legacy System/36 components to modern IBM i technologies, performing remediation activities, and validating functionality through comprehensive testing. This role requires deep technical expertise in System/36 environments, OCL, and RPG II, along with proven experience converting legacy applications to CL and RPG IV (ILE RPG).

Key Responsibilities

• Analyze existing System/36 applications, job streams, menus, and screen flows.
• Convert Operational Control Language (OCL) programs and processes to IBM i Control Language (CL).
• Convert RPG II applications to RPG IV / ILE RPG while preserving business functionality and application integrity.
• Review and remediate converted code to improve maintainability, performance, and compliance with modernization standards.
• Perform unit testing, integration testing, and support user acceptance testing activities.
• Investigate, troubleshoot, and resolve issues identified during remediation and testing.
• Modernize System/36 screens and menu structures.
• Document application functionality, conversion approaches, remediation activities, and testing results.
• Collaborate with technical teams, business stakeholders, and quality assurance resources throughout the modernization effort.
• Participate in code reviews and contribute to technical best practices and knowledge transfer activities.

Required Skills And Experience

Technical Skills

• Strong experience working in IBM System/36 environments.
• Extensive experience with Operational Control Language (OCL).
• Strong RPG II development and maintenance experience.
• Hands-on experience converting OCL to CL.
• Hands-on experience converting RPG II applications to RPG IV / ILE RPG.
• Experience with IBM i application modernization initiatives.
• Strong understanding of batch processing, job scheduling, and legacy application architectures.
• Experience performing conversion remediation and code optimization activities.
• Experience planning and executing conversion-related testing.
• Experience with screen and menu conversion and modernization.

Professional Skills

• Strong analytical and problem-solving abilities.
• Ability to understand and translate complex legacy business logic into modern IBM i solutions.
• Excellent verbal and written communication skills.
• Strong documentation and organizational skills.
• Ability to work independently and within a collaborative project team environment.

Preferred Qualifications

• Experience using automated code conversion tools and performing post-conversion remediation.
• Experience modernizing large-scale IBM i applications in distribution, wholesale, manufacturing, or ERP environments.
• Familiarity with IBM i development tools, source control, and change management processes.
• Experience participating in legacy application transformation and modernization programs.

Deliverables

• Complete OCL to CL conversion activities.
• Complete RPG II to RPG IV / ILE RPG conversion activities.
• Remediate and validate converted applications.
• Execute and document testing activities.
• Support screen and menu modernization efforts.
• Produce technical documentation and knowledge transfer materials.
• Contribute to the successful delivery of modernization objectives.

Experience Requirements

• 7+ years of IBM midrange development experience.
• 5+ years of System/36 development and support experience.
• Demonstrated experience with application conversion and modernization initiatives.
• Proven track record delivering RPG and OCL conversion projects in IBM i environments.

Additional Notes

This position is focused on System/36 application modernization, including OCL, RPG II, CL, RPG IV, remediation, testing, and user interface conversion activities. Experience related to specialized source-format transformation, database modernization, or other advanced modernization disciplines is not required for this role.