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PHENOGY AG is a leading innovator of battery energy storage technologies and solutions for the green electrification of the planet. Our team members work on future-proof and sustainable battery systems that are powerful, safe, and robust – with circularity as a central principle. Our technology partner network spans leading battery research institutes. PHENOGY is an environmentally and socially conscious enterprise. We are committed to fostering prosperity for the people and our planet, ensuring sustainable growth – starting in the area of our greatest expertise and impact: energy storage solutions. As part of the PHENOGY Group, PHENOGY Europe GmbH has established its German headquarters in Bremen. We energize the future. PHENOGY is seeking curious, entrepreneurial-minded energy pioneers to help shape our vision, systems, and growth; playing a key-role as we launch into our ambitious future. If you’re inspired by our mission, values, and drive to change how we energize the future — we’d love your application. As we move from a dynamic start-up into an ambitious scale-up phase, we're looking for a customer-oriented, technically strong Sales Engineer for Battery Energy Storage Systems (BESS) to help accelerate our commercial growth. In this role, you act as the technical counterpart to customers and partners within the sales team — translating complex requirements into commercially attractive, technically feasible BESS solutions, and helping position PHENOGY's sodium-ion battery technology in a competitive, fast-moving market. You'll work closely with Product, Engineering, R&D, and Operations to ensure customer needs, technical feasibility, and commercial value are aligned — from first consultation through to proposal stage.. Your Tasks & Responsibilities Customer & Technical Sales Be the technical expert as part of the sales team throughout the sales cycle for PHENOGY's BESS solutions Analyze customer requirements and translate them into technically and commercially viable solution concepts Present technical solutions and communicate their value to customers and partners Solution Engineering & Proposal Development Design customized BESS solutions and support the preparation of technical and commercial proposals Conduct load profile analyses, business case assessments, and ROI calculations Support tender, RFP, and customer qualification processes Internal Coordination & Market Feedback Collaborate closely with Engineering, R&D, Product Management, and Operations Ensure proposed solutions are feasible, scalable, and aligned with internal capabilities Provide customer and market insights to support continuous product improvement Must have’s Bachelor’s degree in Electrical Engineering, Energy Technology, Mechanical Engineering, or a related technical field At least 3 years of experience in technical sales, solution engineering, sales engineering, application engineering, project engineering or a similar customer-facing technical role 3+ years of experience in technical/solution sales, application engineering, or a similar customer-facing technical role — ideally in battery storage, power electronics, or industrial energy systems Strong commercial mindset: able to connect technical features to customer value, business cases, and buying decisions Fluent in English and German Nice-to-have’s Direct experience with BESS, sodium-ion, lithium-ion, or grid-connected storage applications Experience selling to industrial, commercial, utility, or grid-operator customers Familiarity with PV/solar, EV charging infrastructure, UPS, switchgear, or grid infrastructure Experience preparing technical proposals, RFP responses, or feasibility/ROI assessments Comfort operating in an early-stage, scale-up, or high-growth environment Existing network in renewable energy, e