Position Description: Join CGI! Do you want to be part of one of the world’s top five IT and business consulting companies? At CGI, we are hiring an AS Mainframe Developer to work on an international project. Requirements: - Technical, technologist, or bachelor degree in IT, Software Engineering, or related fields. - Conversational English (B2 or higher). - Over 7 years of extensive experience with AS/Mainframe systems. - Expert-level knowledge of RPG (including free-format RPG), CL, DB2, and other AS/Mainframe technologies. - Proven experience with the IBMi operating system and its administration. - Advanced SQL and database optimization skills. - Experience in performance tuning and system optimization. - Strong analytical and problem-solving skills. - Experience leading technical projects or development teams. - Solid experience in AS RPGLE/SQL DB2, including working with and consuming web APIs. - Methodical and analytical approach to solving complex problems. - Proven problem-solving abilities, especially in identifying and resolving performance issues and bottlenecks. - Ability to apply knowledge in designing scalable, maintainable, and secure solutions. Responsibilities: - Develop and maintain applications on AS/Mainframe systems. - Write, test, and debug programs in RPG and CL. - Design and maintain databases and files in DB2. - Implement batch jobs and interactive applications. - Detect and resolve system issues. - Optimize existing applications to improve performance and reliability. - Create and maintain technical documentation. - Participate in system update and maintenance activities. Nice to have: - Knowledge of .NET development. - Experience in modernizing legacy applications. - Familiarity with web services, APIs, and integration patterns. - Experience with RDi (Rational Developer for i). - Understanding of modern DevOps practices applied to legacy systems. Complementary skills: We are looking for a Senior AS/Mainframe Developer to lead the development and maintenance efforts of our critical legacy systems. You will be responsible for designing, developing, and optimizing high-performance applications on the AS/Mainframe platform. This senior role requires deep technical expertise in AS technologies. Knowledge of .NET is desirable but not mandatory. Apply now! #LI-AD3