Sales Engineer / Technical Sales Manager (BESS)

Location: Bremen, Germany or Technopark Lucerne, Switzerland. Regular customer and site visits within Germany and Switzerland are required.

Company

Develops sustainable battery energy storage technologies and solutions, with a focus on safe, robust, and circular sodium-ion battery systems.

What you will do

• Act as the technical expert in the sales team throughout the sales cycle for battery energy storage solutions.
• Analyze customer requirements and translate them into technically feasible and commercially viable solution concepts.
• Present technical solutions and communicate their value to customers and partners.
• Design customized BESS solutions and support technical and commercial proposal development.
• Conduct load profile analyses, business case assessments, and ROI calculations; support tenders, RFPs, and customer qualification processes.
• Collaborate with Engineering, R&D, Product Management, and Operations while providing customer and market insights for product improvement.

Requirements

• 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.
• At least 3 years of experience in technical or solution sales, application engineering, or a similar customer-facing technical role; experience in battery storage, power electronics, or industrial energy systems is preferred within this requirement.
• Strong commercial mindset and ability to connect technical features with customer value, business cases, and buying decisions.
• Fluent English and German.

Nice to have

• Direct experience with BESS, sodium-ion batteries, lithium-ion batteries, 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 and ROI assessments.
• Experience in an early-stage, scale-up, or high-growth environment.
• Existing network in renewable energy, e-mobility, or industrial power systems.

Culture & Benefits

• Flexible working hours with remote and on-site work in a modern sustainable office.
• Opportunity to develop professionally, shape the role, and take ownership.
• Work on sustainable energy transition and battery storage technologies.
• Eco-focused expert environment with emphasis on diversity, equality, and inclusion.
• Various company events.