AS400 Mainframe Developer

Position Description

We are seeking an experienced AS400/Mainframe Developer to join our development team. You will be responsible for maintaining and enhancing our critical AS400/Mainframe systems and applications. This role focuses exclusively on AS400/Mainframe development with knowledge of .NET being a nice-to-have but not required.

Your future duties and responsibilities

• Develop and maintain applications on AS400/Mainframe systems
• Write, test, and debug RPG, CL, and COBOL programs
• Design and maintain DB2 databases and files
• Implement batch processing jobs and interactive applications
• Troubleshoot and resolve system issues
• Optimize existing applications for performance and reliability
• Create and maintain technical documentation
• Participate in system upgrade and maintenance activities
  
  

Required Qualifications To Be Successful In This Role

• 3-6 years of hands-on experience with AS400/Mainframe systems and IBMi operating system
• Strong proficiency in RPG, RPGLE, CL, SQL, and DB2 database technologies
• Experience working with and consuming web APIs within AS400/Mainframe environments
• Familiarity with query tools, reporting systems, and version control systems
  
  

Problem-Solving & Analytical Capabilities:

• Methodical and analytical approach to complex problem-solving scenarios
• Proven troubleshooting expertise, particularly in identifying and resolving performance issues and system bottlenecks
• Ability to design scalable, maintainable, and secure technical solutions
• Basic knowledge of .NET development
• Experience with system integration between legacy and modern platforms
• Understanding of web services and APIs
• Strong technical foundation in AS400/Mainframe development
• Detail-oriented with excellent troubleshooting abilities
• Good communication skills
• History of reliable project delivery
• Self-motivated with ability to work with minimal supervision
• Understanding of business processes in relation to AS400 applications
  
  

Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

At CGI, we recognize the richness that diversity brings. We strive to create a work culture where all belong and collaborate with clients in building more inclusive communities. As an equal-opportunity employer, we want to empower all our members to succeed and grow. If you require an accommodation at any point during the recruitment process, please let us know. We will be happy to assist.

Come join our team—one of the largest IT and business consulting services firms in the world.