Global Supply Manager - Harnesses, Cables & Connectors

ABOUT BASE Base is America’s next-generation power company. We’re rebuilding the foundation of modern civilization–electricity–by deploying a vast network of distributed batteries that is transforming today’s fragile, centralized grid into a resilient and abundant system. We are engineers, operators, and creatives solving some of the most complex, interdisciplinary challenges of our time. ABOUT THE ROLE Base is looking for a Global Supply Manager to source and own supplier relationships, support new and existing product development and manufacture, and to implement industry-leading sourcing strategy. This role will collaborate closely with engineering, manufacturing, and logistics teams to execute our product roadmap. The primary scope of this role is wiring harnesses, cable assemblies, and connector systems — the AC and DC harnesses, board-level connectors, and interconnect systems that carry power and signal across every Base battery and inverter. What You'll Do - Lead end-to-end RFx processes — scoping requirements, issuing RFQs, evaluating responses, and driving supplier selection to award. - Build and maintain should-cost models for wire harnesses and cable assemblies — decomposing copper, insulation, terminal, connector housing, and assembly labor cost — to anchor negotiations in first principles. - Negotiate piece price, tooling, payment terms, and master agreements — ensuring contracts are in place before business is initiated and that commercial terms hold up at scale. - Own the commercial relationship with key suppliers — tracking performance, managing escalations, and building the trust needed to move fast when it matters. - Develop and execute commodity strategies across AC and DC harnesses, OTS and custom connectors, and terminal systems — monitoring copper index movements, USMCA compliance, FEOC exposure, and dual-source needs to stay ahead of risk. - Drive supplier readiness across production ramp and sustained manufacturing, including capacity planning, lead time management, and obsolescence mitigation through end-of-life. - Synthesize findings and present clear recommendations — on contract awards, cost reviews, risk mitigation, and supply continuity — to engineering and executive stakeholders. What You'll Bring - Background in sourcing wire harnesses, cable assemblies, and interconnect commodities — with fluency in wire and cable cost drivers, assembly labor economics, connector qualification, and supplier dynamics across high-volume harness manufacturing. - 3+ years sourcing experience in a similar role. - Strong excel and spreadsheet skills. - Strong organizational and project management skills. - Strong written and verbal communication skills. - Flexible mindset and temperament. - Willingness to travel domestically and internationally. Average 25% travel. Preferred Skills - Strong record of applying first principles thinking toward supplier negotiations. - Strong record of managing successful escalations up to the executive level within a supplier. - Ability to learn quickly and prioritize appropriately to meet customer and company needs. - Experience with MRP/ERP systems. About this Team Our supply chain team is responsible for sourcing components, managing manufacturing operations, and building the vendor relationships needed to produce and deliver the lowest-cost, highest-quality home battery systems at scale. That means optimizing landed costs through global sourcing, ramping domestic manufacturing, and developing supplier partnerships that hold up under pressure. The work has direct impact - homeowners across the country rely on Base for whole-home backup and below-market electricity rates, while our aggregated storage supports grid stability at a moment when demand is accelerating from AI infrastructure, electrification, and extreme weather. We're building the supply foundation to keep pace, manufacturing in-house and expanding nationally at speeds and costs incumbents can't match. Please note: Base