"The demand for legacy system modernization is soaring as companies rely on IBM i (AS/400) platforms to run critical operations. Skilled AS400 developers who can navigate RPG, CL, and DB2/400 are essential to keep these systems efficient and secure. This long\u2011term contract offers a unique chance to apply your RPG expertise in a dynamic, onsite environment in Issaquah.\n\n# Job Summary\nWe are seeking an experienced AS400 Developer to design, develop, test, and maintain applications on the IBM i platform. The role involves working with RPG III/IV/RPGLE, creating CL programs, managing DB2/400 databases, and providing production support and performance tuning.\n\n# Top 3 Critical Skills Table\n| Skill | Why it's critical | Mastery Level |\n|---|---|---|\n| RPG IV / RPGLE | Core language for business logic on IBM i | Senior |\n| IBM i (AS400) platform | Underpins all application deployment and maintenance | Senior |\n| DB2/400 | Primary database; performance and data integrity depend on it | Senior |\n\n# Interview Preparation\n1. **Explain the differences between RPG III, RPG IV, and Free\u2011Format RPG.**\n *What the interviewer is looking for:* Understanding of language evolution, syntax changes, and when to use each style.\n2. **How do you approach performance tuning for a DB2/400 query?**\n *What the interviewer is looking for:* Knowledge of indexing, query optimization, and tools like Explain.\n3. **Describe a scenario where you used CL programming to automate a production task.**\n *What the interviewer is looking for:* Practical experience with command\u2011level scripting and integration with RPG programs.\n4. **What steps do you take when debugging an RPGLE program that crashes in production?**\n *What the interviewer is looking for:* Systematic troubleshooting, use of debug tools, and error\u2011handling strategies.\n5. **How would you handle a critical incident that impacts a live AS400 application?**\n *What the interviewer is looking for:* Incident management process, communication, and rapid root\u2011cause analysis.\n\n# Resume Optimization\n- AS400\n- IBM i\n- RPG III\n- RPG IV\n- RPGLE\n- Free Format RPG\n- CL programming\n- DB2/400\n- Performance tuning\n- Production support\n\n# Application Strategy\nWhen reaching out to the recruiter, send a concise email that starts with a polite greeting, attach your updated resume, and clearly highlight your top relevant skills. Make sure to mention related skills you possess, such as RPG IV, CL programming, and DB2/400 performance tuning, and reference specific projects where you applied these technologies.\n\n# Career Roadmap\n| Current Role | Typical Experience | Core Focus | Next Position |\n|---|---|---|---|\n| AS400 Developer (Contract) | 2\u20114 years on IBM i, RPG, DB2/400 | Application development & support | Senior AS400 Developer |\n| Senior AS400 Developer | 5\u20117 years, leading modules, performance optimization | Architecture & mentoring | AS400 Team Lead |\n| AS400 Team Lead | 8\u201110 years, strategic planning, cross\u2011team coordination | Platform strategy & governance | IT Manager / Platform Director |\n"