Are you looking for an exciting career in Defense and Aerospace? TREALITY® Simulation Visual Systems welcomes people who share our determination and high standards to join us in doing work that moves the world forward and saves lives. TREALITY® SVS has a diverse culture that celebrates autonomy and inspires leadership at every level of our organization. TREALITY® SVS is looking for a Sr. Buyer to join our team and make a difference. The Sr. Buyer will l ead and execute purchasing activities that support the design, manufacture, assembly, installation, and service of advanced simulation visual systems. Translate engineering and production demand into timely, accurate, and commercially sound purchase orders while balancing quality, cost, lead time, inventory, and project requirements. Work closely with mechanical engineering, system engineering, project management, production, warehouse, logistics, finance, quality, and suppliers. The role requires strong technical buying experience, confidence working from mechanical bills of material (BOMs), drawings, specifications, and part data, and practical understanding of purchasing and material planning processes in Microsoft Dynamics 365 Business Central. Main Accountabilities: 1. Issue, maintain, and follow purchase orders in Microsoft Dynamics 365 Business Central, ensuring accurate item, vendor, quantity, price, delivery, and project information. 2. Purchase technical materials and services, including fabricated metal parts, weldments, sheet metal, fasteners, custom mechanical components, cabling, electronics, computers, projectors, optical components, and related production supplies. 3. Interpret mechanical drawings, specifications, revisions, and BOM structures to communicate requirements clearly to suppliers and resolve technical or commercial questions. 4. Request and evaluate quotations; negotiate pricing, lead times, payment terms, minimum order quantities, and other commercial conditions within delegated authority. 5. Develop and maintain reliable supplier relationships and identify qualified alternate sources where practical. 6. Monitor supplier acknowledgements, open orders, shortages, and delivery commitments; proactively communicate risks and recovery actions to internal stakeholders. 7.&nbs