IBM i System/36 Developer

Fresche Solutions

. Analyze existing System/36 applications, job streams, menus, and screen flows .

Posted 10/6/2026full-timeRemote • Massachusetts • United StatesSeniorLeadWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in IBM System/36 environments, focusing on the conversion of OCL to IBM i Control Language and RPG II to RPG IV / ILE RPG. Proven ability to modernize legacy applications while ensuring compliance with best practices and maintaining application integrity.

Highest-signal resume keywords

IBM System/36 ExperienceOperational Control Language (OCL)RPG II DevelopmentIBM i Control Language (CL)RPG IV / ILE RPG Conversion

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Application ModernizationCode OptimizationUnit TestingIntegration TestingLegacy Application ArchitectureBatch ProcessingJob SchedulingTechnical DocumentationConversion RemediationAutomated Code Conversion Tools

Soft Skills

Analytical SkillsProblem-Solving AbilitiesCommunication SkillsOrganizational SkillsCollaboration

Tools & Technologies

IBM i Development ToolsSource ControlChange Management Processes

Industry Keywords

DistributionWholesaleManufacturingERP EnvironmentsLegacy Application Transformation

Tech Stack

Tools & technologies

ERP

About the role

Key responsibilities & impact

Analyze existing System/36 applications, job streams, menus, and screen flows
Convert 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
Participate in code reviews and contribute to technical best practices and knowledge transfer activities
Complete and document OCL-to-CL and RPG II-to-RPG IV / ILE RPG conversion activities
Produce technical documentation and knowledge transfer materials
Contribute to successful modernization objectives

Requirements

What you’ll need

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

Benefits

Comp & perks

True work-from-anywhere (North America) model
Work-life balance
Collaborative culture
Knowledge transfer and professional best-practice opportunities