Analyze and reverse engineer legacy iSeries applications and DB2 data structures; document functionality, workflows, business logic, system architecture, and data flows; identify migration gaps and risks; collaborate with Java and platform engineering teams; support modernized solution design and validation; and maintain migrated features after implementation.
We are looking for a Software Engineer with experience in DB2 on
the iSeries (AS/400) platform to support our modernization initiatives. This
role will primarily focus on reverse engineering and analyzing existing iSeries
applications, documenting current system functionality, and creating clear
technical diagrams to enable migration to a modern technology stack.
Post-migration, this engineer will also play a key role in
supporting and maintaining the modernized solutions.
· Analyze and reverse engineer existing iSeries (AS/400)
applications and DB2 data structures
- Document
current system functionality, workflows, and business logic
- Create
detailed technical documentation and architecture/data flow diagrams to
support modernization efforts
- Collaborate
closely with Java and platform engineering teams to enable feature
migration to modern systems
- Identify
gaps, dependencies, and risks in legacy implementations during the
discovery phase
- Support
the design and validation of modernized solutions
- Transition
to owning and maintaining the migrated features in the modern tech stack
post-implementation
- Ensure
knowledge transfer and continuity between legacy and modern platforms
RequirementsRequired Qualifications
· Minimum 2+ years of experience with DB2 on iSeries (AS/400)
- Strong
ability to analyze and understand legacy systems
- Experience
creating technical documentation and diagrams (process flows,
system architecture, data mapping)
- Solid
SQL skills and understanding of database structures
- Strong
analytical and problem-solving abilities
- Good
communication skills, with the ability to translate legacy logic into
clear documentation
· Experience with RPG, CL, or DDS on iSeries
- Familiarity
with modern technology stack, including:
o Java / Spring Boot
o Microservices architecture
o Messaging systems (e.g., MQ)
o Cloud platforms (AWS/Azure/GCP)
o Git/GitHub
o CI/CD tools (e.g., Jenkins)
- Experience
with system modernization or migration initiatives
- Exposure
to API-driven or event-driven architectures
· Strong ability to bridge legacy systems and modern technologies
- Detail-oriented
with a focus on accuracy in reverse engineering and documentation
- Comfortable
working in a transitional environment (legacy → modern)
- Willing
to evolve into a full-stack or modern platform contributor after
migration
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