Role Mandate The BESS Product & Engineering Lead owns the product definition, engineering spine, and commercial-technical translation of the BU—converting cell technology, system architecture, and integration choices into a competitive product portfolio, a defensible cost envelope, and risk-balanced commercial terms. This role is the BU’s internal technical authority for BESS product and technology. It works in close partnership with the Lead Procurement – China Sourcing: sourcing owns supplier discovery, day-to-day supplier management, and execution; this role owns what we buy, why, against what specs, and on what commercial-technical terms. Define BESS product specifications, cost envelopes, and technology tie-ups Shape product portfolio evolution—cell format and sizing trajectory, chemistry roadmap, and the 12 / 24 / 36-month product view Own system architecture and integration across BMS, PCS, EMS, thermal, and safety sub-systems Structure LTAs, warranty clauses, back-to-back terms...