Senior IT Software Developer
Mattel
It’s our heritage and it’s also our future. We create innovative products and experiences that inspire fans, entertain audiences and develop children through play. We value and share an infinite range of ideas and voices that evolve and broaden our perspectives with a reach that extends into all our brands, partners, and suppliers.
The iSeries Production Support Engineer is responsible for the stability, availability, and performance of mission-critical applications at the Mattel Asia Manufacturing facility (China and Southeast Asia) and of in-house-developed applications on the IBM i (iSeries/AS/400) platform. This role provides L2/L3 support, including incident response, batch/job scheduling via CA Scheduler, HA/DR support, performance troubleshooting, and release/change activities. You’ll partner closely with application developers (RPG/CL), infrastructure administrators, business analysts, and business stakeholders to minimize downtime, protect data integrity, and ensure timely batch completion.
Provide L2/L3 production support for IBM iSeries applications built in RPG (RPGLE/ILE), CL/CLLE and SQL on Db2 for iSeries
Monitor application health, system logs, and performance metrics, and identify potential issues.
Perform root cause analysis (RCA) and implement permanent fixes or preventive measures.
Handle on-call support and incident escalations as required.
Support application deployments, hotfixes, and patches in production environments.
Perform configuration changes and environment validation across the Development, UAT, and Production environments.
Ensure application uptime, reliability, and data integrity.
Coordinate with infrastructure teams on server, database, and network-related activities
Monitor & Performance
~ Monitor application performance
Identify performance bottlenecks and work with development teams to optimize applications.
Work closely with application development teams to understand application design and business expectations
Participate in release planning, post-release validation, and post-incident reviews.
Strong hands‑on experience with IBM i (iSeries/AS/400) operations
Proficiency in RPG (RPGLE/ILE) and CL/CLLE ; solid knowledge of SQL/Db2 for i (querying, tuning, access paths).
Practical experience administering CA Job Scheduler on IBM i (job definitions, calendars, dependencies, notifications).
Familiarity with HA/DR technologies on IBM i (e.g., MIMIX , PowerHA , or similar): monitoring replication, audits, and role swaps.
Understanding of ITIL processes (Incident, Problem, Change, Knowledge).
Education & Experience
Degree in computer science, Information Technology or related field (or equivalent experience)
Min 5 years of experience in iSeries / application development or support area
Understanding of manufacturing back office, shop floor operation and trading companies’ operation is value added
Eager to work on-call or non regular hours (Asia time zone) whenever necessary
Eager to travel for intensive training during the initial 6-12 months
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