Junior-Senior AS/400 Back-End Software Engineer
TLDR
Modernize mission-critical enterprise applications through COBOL, RPG, CL, Db2, integrations, and AI-assisted development.
We are looking for AS/400 Back-End Software Engineers across Junior, Mid, and Senior levels to develop and maintain core business applications running on the IBM i (AS/400) platform.
The role focuses on enterprise systems, batch processing, integrations, data management, and modernization using technologies including COBOL, RPG, CL, and Db2 for i.
Key Responsibilities
- 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
- 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
Seniority levels: Junior: 1+ years | Mid: 3+ years | Senior: 5+ years. Senior profiles should bring strong IBM i architecture, optimization, integration, modernization, and technical leadership experience.
Nice to Have
- IBM i modernization frameworks and tools
- REST/SOAP integrations
- SQL modernization experience
- Integration with .NET, Java, Azure, Salesforce, or other distributed platforms
- Message-based integration solutions
- Experience with insurance core business systems
- Knowledge of Life Insurance, Policy Administration, Claims, Billing, Commissions, Actuarial/Financial Processing, batch processing, or regulatory reporting
You will be a great candidate for us if you
- Have strong expertise in IBM i technologies
- Enjoy working with mission-critical enterprise applications
- Can combine legacy-system knowledge with modern integration approaches
- Are interested in modernization and AI-assisted software engineering
Benefits
Why join inventYOU
- 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
InventYOU AB drives impactful digital transformation in the banking and fintech sectors, tackling complex projects within regulated payment ecosystems. We empower skilled professionals to take technical ownership and collaborate on high-visibility initiatives that make a real difference.