Supply and Inventory Planner
Operations · Full-time
Bucheon-si, Gyeonggi-do, South Korea
Posted on Oct 3, 2026
ONSEMI is looking to add a strong individual contributor to our Supply and Inventory Planning team. This person can have prior Supply Chain Planning Experience or suitable relevant skills and a demonstrated ability to learn job specifics quickly. The Supply Planner role covers both execution of supply planning and communication of supply status to all of the relevant parties – these include the Business Unit Management, Factory Management, Finance, and other tactical members of the Supply Chain Management team. Balancing Supply against volatile demand and Inventory Objectives requires strong data-handling and analytic skills, attention to details, and crisp, timely communication. A thorough understanding of supply chain basics and general knowledge of semiconductor manufacturing is required.
onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. With a highly differentiated and innovative product portfolio, onsemi creates intelligent power and sensing technologies that solve the world’s most complex challenges and leads the way in creating a safer, cleaner, and smarter world.
More details about our company benefits can be found here:
| We are committed to sourcing, attracting, and hiring high-performance innovators, while providing all candidates a positive recruitment experience that builds our brand as a great place to work. |
Requirement
- BS/BA in Supply Chain Management (or related field)
- 0-3 years of SCMS work experience, prior experience in tactical planning roles
- Excellent communication and coordination skills.
- Ability to work under pressure and meet deadlines.
- General understanding of the Sales and Operations Planning processes
Skills
- Microsoft Office (Excel, Word, Outlook, PowerPoint)
- End to end Supply Chain Knowledge/Understanding
- Excel at decision-making, direction, and execution to results
- Exhibit strong communication and listening skills
- Ability to organize and direct strategic activity at the global level
- Customer service oriented
- Program/Project Management (PMP is a plus, not essential)
- Semiconductor experience is highly desired
- Advanced data mining skills (SQL, database skills, advanced MS Excel skills like Macro, VBA, etc.) are a strong plus
- Serve as the Business Unit (BU) supply interface and coordinate with demand planning counterparts to ensure that the plans remain aligned.
- Oversee wafer starts and make final decisions on starts.
- Plan, manage, and set targets for inventory and build-category.
- Coordinate the allocation process (BUs make decisions) by suggesting an allocation based on BU strategy, setting up allocation in planning systems and monitoring allocation performance until close.
- Execute product transfers per BU, manage suggested EOL devices.
- Drive strategic builds and factory filler.
- Manage lead time by providing recommendations based on system calculated lead times, Market trends and coordinating with BU to gather decisions what gets published to market.
- Provide Beginning of Quarter (BOQ) supply input/coordination, advocate for BU and drive supply reviews and Product group and Division levels.
- Work with procurement and external manufacturing on negotiations (or re-negotiations) for external capacity.