Junior-Senior AS/400 Back-End Software Engineer

Posted 2 Days Ago
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Athens, GRC
In-Office
Senior level
Information Technology • Consulting
The Role
Develop and maintain mission-critical IBM i and AS/400 business applications using COBOL, RPG, CL, and Db2. Responsibilities include integrations, database development, batch processing, production support, performance troubleshooting, deployments, documentation, and modernization initiatives. Collaborate with analysts, architects, and engineering teams while applying AI-assisted development and specification-driven practices. Experience with insurance systems, distributed platforms, and modern integration technologies is advantageous.
Summary Generated by Built In

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

BenefitsWhy 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

Skills Required

  • Professional IBM i or AS/400 development experience appropriate to the seniority level
  • 1+ years of experience for Junior-level roles
  • 3+ years of experience for Mid-level roles
  • 5+ years of experience for Senior-level roles
  • Experience with COBOL
  • Experience with RPG III, RPG IV, ILE RPG, or 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
  • Strong IBM i architecture, optimization, integration, modernization, and technical leadership experience for Senior profiles
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The Company
HQ: Stockholm
21 Employees
Year Founded: 2017

What We Do

inventYOU is an IT Consulting firm founded in Sweden in 2017. At inventYOU we offer senior professional IT services. Our consultants have extensive experience in the industry and throughout the years have assisted our customers in their successful digital transformation journeys. InventYOU can offer a wide variety of nearshoring professional IT services in various technology stacks from Athens, Greece. This enables inventYOU to provide customers a large pool of highly educated, skilled and experienced IT-professionals at very competitive prices. Working in the same time zone, with Swedish speaking account management allows for a solid and transparent delivery. This collaboration also provides limited travel if the customer and project require an on-site presence.

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