Technical Sales Engineer / Manager (w/m/d) - BESS

PHENOGY is a leading innovator of battery energy storage technologies and applications for the green electrification of the planet. Our team members work on future‑proof and truly sustainable battery systems that are powerful, safe, and robust – with circularity as a central principle.

As part of the PHENOGY Group, PHENOGY Europe GmbH has established its German headquarters in Bremen.

PHENOGY is an environmentally and socially conscious enterprise. We are committed to fostering prosperity for the people and our planet, ensuring truly sustainable growth – starting in the area of our greatest expertise and impact: energy storage solutions.

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 an innovative company in the field of stationary energy storage systems, PHENOGY develops future‑proof battery solutions for industrial, commercial, and grid‑related applications. As we move from a dynamic start‑up into an ambitious scale‑up phase, we are looking for a customer‑oriented and technically strong Technical Sales Engineer / Manager (f/m/d) to help accelerate our commercial growth in the BESS market.

In this role, you act as the technical counterpart to customers and partners as part of the sales team. You translate complex requirements into commercially attractive and technically feasible BESS solutions, are part of high‑value customer conversations, and help position PHENOGY’s sodium‑ion battery technology in a competitive and fast‑moving market. You will work closely with Product, Engineering, R&D, and Operations to ensure that customer needs, technical feasibility, and commercial value are aligned from the 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 to 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, Industrial Engineering, Physics, Chemistry, Materials Science, 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
Strong technical understanding of battery systems, power electronics, energy storage, renewable energy systems, industrial energy infrastructure or similarly complex technical products
Experience with customers or applications in at least one of the following areas: BESS, PV / solar systems, EV charging infrastructure, UPS, switchgear, power electronics, grid infrastructure, industrial energy systems or complex engineered products
Ability to explain complex technical topics clearly to customers, sales colleagues, and internal technical teams
Strong commercial mindset and ability to connect technical features with customer value, business cases and buying decisions
Full professional proficiency in German and English

Nice-to-have’s

Direct experience in battery technology, BESS, sodium‑ion, lithium‑ion, power conversion systems or grid‑connected storage applications
Experience in technical solution selling for industrial, commercial, utility, grid operator or infrastructure customers
Familiarity with energy markets, grid requirements, regulatory frameworks or C&I energy use cases
Experience preparing technical proposals, RFP responses, feasibility assessments, load profile analyses or ROI calculations
Experience in an early‑stage, scale‑up or high‑growth technical environment
Existing network in renewable energy, e‑mobility, energy infrastructure, industrial power systems or related customer groups

Location: Bremen, Germany or Technopark Lucerne, Switzerland

Travel readiness: Regular customer and site visits within Germany and Switzerland, depending on business needs

Reports to: Head of Sales – EMEA

We offer you:

Join a high‑caliber environment that enables you to develop your full potential, shape your job, and take ownership.
Participate in the development of PHENOGY and inspire the world to transition to sustainable energy.
Become part of our eco‑passionate expert team - a first‑class team all around.
Benefit from flexible work hours as well as remote and on‑site working in a modern sustainable office

At PHENOGY, we highly value diversity, equality, and inclusion. It makes our company stronger. Our philosophy: one mindset, many minds.

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