AS400 Lead

We are seeking an experienced AS/400 Application Specialist to guide the AI Tools team in building and maturing EPAM's in-house solution for IBM i. Series (AS/400) application reverse engineering, analysis, and modernization.

Responsibilities

Demonstrate deep expertise in IBM i. Series (AS/400) applications, architecture, data organization, coding patterns, development practices, tools, and infrastructure, including RPG III, RPG IV, RPGLE, free-format RPG, CL/CLLE, COBOL, DDS, DSPFs, SQL, Db2 for i, libraries, objects, service programs, display files, printer files, physical and logical files, commitment control, and journaling Apply strong knowledge of Db2 for i and SQL-based application analysis, including database relationships, physical and logical files, views, indexes, constraints, triggers, stored procedures, journaling, data quality, and performance considerations Conduct application portfolio analysis and evaluate RPG, CL, COBOL, DDS, SQL, and Db2 for i coding patterns; identify redundant, unreachable, duplicated, obsolete, tightly coupled, and highly complex code Assess application quality, maintainability, performance, technical debt, modernization readiness, and potential risks Analyze legacy IBM AS/400 applications, identifying dependencies and business rules, tracing data flows, documenting application behavior, and assessing undocumented or complex codebases Drive modernization initiatives including RPG refactoring, fixed-format-to-free-format conversion, DDS-to-DDL conversion, Db2 modernization, API and web-service enablement, UI modernization, application decomposition, cloud integration, re-platforming, and application retirement Collaborate with the AI Tools team to define requirements, validate analysis logic, improve prompts and rules, and enhance the accuracy of AI-generated application documentation and code insights Guide the development of AI capabilities for program understanding, dependency discovery, business-rule extraction, data-flow analysis, impact analysis, code summarization, test-case generation, and modernization recommendations Contribute to technical assessments, proofs of concept, solution demonstrations, effort estimation, project planning, risk identification, progress reporting, and executive-level presentations Partner with customer IBM i SMEs, application owners, business analysts, modernization specialists, AI Tools team members, testing teams, cloud architects, and Technical Leadership across the client and EPAM organizations Ensure that the reverse-engineering and modernization solution complies with enterprise architecture standards, customer security policies, source-code handling requirements, data-protection controls, audit requirements, and applicable regulatory obligations Requirements 9+ years of experience in enterprise midrange (i.

Series or AS/400) technologies, with 5+ years focused on application analysis, reverse engineering, and modernization solutions Expertise in RPG III, RPG IV, and RPGLE Proficiency in free-format RPG, CL/CLLE, and COBOL Competency in DDS, DSPFs, and SQL Background in Db2 for i, including database design, performance tuning, and SQL-based application analysis Understanding of IBM i.

Series (AS/400) architecture, libraries, objects, service programs, and file structures (physical, logical, display, printer) Skills in reverse engineering legacy AS/400 applications, tracing dependencies, business rules, and data flows Knowledge of modernization approaches including RPG refactoring, fixed-format-to-free-format conversion, and DDS-to-DDL conversion Familiarity with API and web-service enablement, UI modernization, and cloud integration or re-platforming strategies Capability to collaborate with cross-functional and AI-focused teams to enhance tooling accuracy and delivery outcomes Proficiency in English at an Upper-Intermediate level (B2) or higher