Experience: 2+ ​years ​of ​relevant experience Education: ​Bachelor’s degree or higher Employment ​Type: ​Full-time Location: HQ ​(Yeouido, Seoul) and ​frequent on-site ​work ​at assigned ​vendor ​locations About ​Sphere Sphere Corporation is ​a ​KOSDAQ-listed global aerospace ​and ​advanced ​materials company supplying ​aerospace-grade specialty ​alloy ​products to ​leading U.S. ​aerospace ​and space customers. As ​our Aerospace ​business grows rapidly, we are strengthening our Korea-based supplier-facing team to improve delivery visibility, vendor responsiveness, and execution across key product lines, including tubing, bar, plate, and sheet. Role Overview The Procurement / Buyer, Aerospace will be responsible for managing supplier schedules, tracking work-in-progress (WIP), identifying delivery risks, and supporting timely execution with Korea-based vendors. This is a supplier-facing role that requires close communication with vendors, frequent on-site presence, and strong coordination with Sphere’s U.S. customer-facing teams. You will help ensure that supplier progress is visible, delivery risks are escalated early, and open action items are followed through to closure. Product or vendor coverage may include tubing, bar, plate, sheet, or other aerospace product lines depending on business needs. Why This Role Matters As the Aerospace business scales, Sphere needs stronger day-to-day visibility into vendor progress and delivery execution. The U.S. Account Managers are responsible for customer-facing communication, but due to time zone differences and the level of vendor follow-up required in Korea, dedicated Korea-based Procurement / Buyer support is essential. This role will help improve WIP tracking, supplier schedule management, delivery responsiveness, and internal communication between Korea-based vendors and the U.S. team.

Key Responsibilities 1. Supplier Schedule Management • Manage open order schedules with assigned vendors • Track delivery milestones, production status, and schedule changes • Escalate delays, bottlenecks, or high-risk items in a timely manner • Follow up with vendors to ensure progress is clearly understood and updated 2. WIP Tracking & Delivery Visibility • Check and update work-in-progress status on a regular basis • Identify no-movement items, delayed items, quantity changes, date changes, and newly opened items • Help maintain accurate WIP information for internal team visibility • Support timely reporting of supplier progress to the U.S. team 3. Supply Gap Resolution • Identify supply gaps and open issues that may impact customer delivery • Work with vendors and internal teams to close open action items • Track issue status until resolution • Communicate risks clearly and request support when escalation is needed 4. Vendor Communication & On-Site Coordination • Communicate directly with assigned vendors to secure accurate schedule and delivery information • Maintain a professional working relationship with vendors while ensuring required follow-up is completed • Spend time on-site at vendor locations as needed to verify progress and support execution • Help improve vendor responsiveness and delivery discipline 5. Cross-Functional Collaboration • Coordinate closely with U.S. Account Managers and internal Korea-based teams • Provide timely updates on supplier progress, risks, and action items • Support customer-facing teams by improving the accuracy and speed of supplier-related information • Help translate vendor status into clear internal action items What Success Looks Like • Supplier WIP and schedule status are captured and shared reliably • Delivery risks and delays are identified earlier and escalated appropriately • Open action items are tracked and closed more effectively • U.S. customer-facing teams receive faster and clearer supplier updates • Vendor communication becomes more structured and responsive • Delivery visibility improves across assigned product lines and vendors

Required Qualifications • 2+ years of relevant experience in procurement, purchasing, supply chain management, production planning, expediting, or supplier management • Bachelor’s degree or higher • Experience managing supplier schedules, delivery status, or production progress • Ability to communicate directly with vendors and follow up on open issues Fluency in Korean required • Business-level English communication skills for collaboration with the U.S. team • Ability to travel frequently to vendor sites as needed • Strong execution capability with the ability to prioritize, follow up, and drive tasks to completion

Preferred Background • Experience in the aerospace, manufacturing, steel, metals, specialty alloy, tubing, bar, plate, sheet, or advanced materials industry • Experience in on-site delivery management, expediting, production progress tracking, or supplier follow-up • Experience working with ERP, WIP tracking, production management, or reporting tools • Experience working with global teams, especially U.S.–Korea teams Familiarity with vendor relationship management in a technical or manufacturing environment Key Skills & Attributes • Highly organized, with strong follow-through on open items • Strong sense of urgency and ownership • Detail-oriented and reliable in tracking schedules, quantities, and status changes • Clear and timely communicator • Comfortable working in a fast-moving operational environment • Able to work effectively with vendors, internal teams, and overseas stakeholders • Practical problem-solver who can identify risks early and escalate appropriately Why Join Sphere • Gain hands-on experience managing supplier execution within a global aerospace supply chain • Work directly with Korea-based vendors supporting leading U.S. aerospace and space customers • Build operational expertise in a fast-growing, KOSDAQ-listed aerospace company • Take on a role with direct impact on delivery performance, customer responsiveness, and business growth • Collaborate with global teams across Korea and the United States

Hiring Process Application Review ＞ First Interview ＞ Second Interview ＞ Compensation Discussion ＞ Final Offer • The hiring process may change depending on circumstances. • Interview invitations are extended only to candidates who pass the document screening. • Interview results are communicated to all candidates, whether they pass or not. • The title or level may be adjusted by mutual agreement depending on the interview process or circumstances. • An initial 6-month evaluation period applies after joining; continuation of employment will be determined based on performance and fit during this period. • National merit recipients and persons with disabilities are given preference in accordance with applicable law. • If submitted documents or their contents are found to differ from the facts, the offer may be withdrawn even after hiring is confirmed.

Benefits • Family-event allowances and holiday gifts • Equipment and supplies needed for work, including a latest-model laptop/PC • Freely usable annual leave • No forced company dinners or overtime • Flexible dress code, with TPO in mind • Support for self-development, including book purchases, seminars, and training costs • Meal and transportation support for overtime work ※ The above may change depending on company circumstances.