Buyer / Supply Chain / Procurement / Inventory

HydroGraph is a hyper-growth advanced materials company scaling pristine, high-performance graphene via its patented Hyperion detonation technology. With more than 70 active commercial projects, a growing global footprint, and industry-leading material quality (99.8% pure graphene), HydroGraph is building the next generation of engineered materials for coatings, composites, and energy storage. Our new Austin HQ will serve as the flagship center for innovation, applied R&D, customer engagement, and rapid material development.
The Buyer I supports all purchasing and supply chain operations, ensuring the timely and cost-effective acquisition of goods and services. This role plays a critical part in maintaining supplier relationships, managing purchase transactions within NetSuite, coordinating logistics activities, and supporting office and IT-related operations. This position reports to the Director of Supply Chain.
Procurement & Purchasing

Support direct and indirect procurement activities, including vendor outreach and negotiation assistance
Perform 3-way matching (PO, receipt, invoice) to ensure data accuracy and payment integrity
Maintain supplier records, pricing data, and contract documentation
Assist in setting up and managing corporate supplier accounts and Net 30 terms
Logistics & Supplier Management
Coordinate inbound and outbound shipments, including small parcel shipping and freight
Track shipments and proactively follow up on delivery status
Support customer-facing logistics coordination as needed
Serve as the primary interface between internal stakeholders and the external Managed Service Provider (MSP), managing SLAs, issue escalation, and vendor accountability
Coordinate IT hardware supply and delivery for new hires; partner with the MSP on account provisioning and onboarding timelines
Maintain IT asset registry and manage equipment lifecycle including supply planning, refresh cycles, and disposition
Supply Chain & Office Operations
Own replenishment and inventory management for office supplies, consumables, and pantry stock; Coordinate with facilities and security vendors for access credentialing, badge administration, and service scheduling
Support day-to-day office operations and execute ad hoc supply chain and administrative tasks as business needs require
Experience in procurement, purchasing, operations, or a related field, or a strong desire to learn and grow into the role
Proficient in Microsoft Office (Excel, Outlook, Teams) or eager to build those skills
Basic understanding of managed IT services or IT asset management
Lead the core scientific engine of one of the fastest-growing graphene companies in the world.
Shape a next-generation materials platform used across aerospace, energy, infrastructure, consumer goods, and defense.
Competitive compensation, equity participation, and career advancement as the company scales.