Junior-Senior AS/400 Back-End Software Engineer

inventYOU IT Consulting

. Develop and maintain applications on IBM i / AS/400 .

Posted 9/29/2026full-timeAthens • GreeceSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates extensive experience in IBM i / AS/400 application development, including proficiency in COBOL, RPG, and Db2 for AS/400. Capable of leading modernization initiatives and optimizing system performance while collaborating effectively with cross-functional teams.

Highest-signal resume keywords

IBM i / AS/400 Development ExperienceCOBOL ProgrammingRPG III / RPG IV / ILE RPGDb2 for AS/400 and Embedded SQLTechnical Leadership

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

COBOLRPG IIIRPG IVILE RPGDb2 for AS/400Embedded SQLCL (Control Language)DDSBatch ProcessingAI-Assisted Software Development

Tools & Technologies

IBM Rational Developer

Industry Keywords

Application ModernizationIntegrationOptimizationTechnical DocumentationJob Scheduling

Tech Stack

Tools & technologies

SQL

About the role

Key responsibilities & impact

Develop and maintain applications on IBM i / AS/400
Develop and enhance programs using COBOL, RPG, and CL
Build interfaces and integrations with internal and external systems
Develop database components using Db2 for AS/400
Troubleshoot production issues and performance bottlenecks
Support batch operations, deployments, and production releases
Participate in application modernization initiatives
Collaborate with Business Analysts, Architects, and engineering teams
Maintain technical and operational documentation

Requirements

What you’ll need

Professional IBM i / AS/400 development experience appropriate to the seniority level
Experience with COBOL
Experience with RPG III / RPG IV / ILE RPG / Free-Format RPG
Knowledge of CL (Control Language)
Experience with Db2 for AS/400 and Embedded SQL
Knowledge of DDS
Experience with IBM Rational Developer or equivalent tools
Understanding of batch processing and job scheduling
Experience with AI-assisted software development and Specification-Driven Development practices
Proficiency in Greek and English
Junior: 1+ years of experience
Mid: 3+ years of experience
Senior: 5+ years of experience
Senior profiles: strong IBM i architecture, optimization, integration, modernization, and technical leadership experience

Benefits

Comp & perks

Work on business-critical enterprise platforms
Apply your AS/400, COBOL, RPG, and Db2 expertise to complex environments
Contribute to modernization and transformation initiatives
Collaborate with experienced engineering and architecture teams