Key Account Manager- ESS (all genders)

Position: Key Account Manager- Energy Storage Systems (Europe) (all genders)

Location: Stuttgart, Germany

Job Id: 1028

# of Openings: 1

Shaping the future of energy storage

At A123 Systems, we're driving the transition to cleaner, more efficient energy solutions with advanced lithium ion storage technologies. Our cutting‑edge battery systems offer superior energy density, safety and durability, helping vehicle manufacturers achieve exceptional performance while reducing their environmental footprint.

Our expertise goes beyond automotive applications. In addition to high‑voltage batteries for electric and hybrid vehicles and low‑voltage solutions that improve efficiency, we also produce energy storage systems (ESS) designed to optimize energy use, support the integration of renewable energy sources and provide reliable backup power.

With capabilities that include innovative cell chemistry, integrated thermal management, software and electronics, we deliver complete, cost‑effective energy solutions tailored to our customers' needs. Backed by a global manufacturing footprint and a commitment to pushing the limits of performance, A123 Systems is reducing emissions, improving energy efficiency and powering a cleaner, greener future across industries.

We are looking for Key Account Manager- ESS (Europe) (all genders) for our team!

Responsibilities

• Acquire new customers for A123's energy storage solutions
• Identify opportunities and develop account management plans
• Execute account plans to penetrate target customers and solutions
• Drive all customer commercial activities, including proposal preparation, pricing, and contract negotiation
• Establish relationships with key decision-makers and align the A123 team with the appropriate level of contact at the customer site
• Communicate customer requirements to the product development team to support future product planning
• Represent the company at trade shows and industry events

Education & Experience

• Significant sales/key account management experience in B2B sales
• Experience and a strong professional network in the European energy storage market are a must
• Experience in the photovoltaic market preferred
• Confidence in making cold calls to potential customers

Knowledge, Skills, and Abilities

• Fundamental understanding of the core technology and its benefits, and identification of its unique selling points
• Deep understanding of the PV/ESS market and its key distributors
• Ability to identify customer needs and translate them into a successful business proposal
• Strong negotiation and commercial skills
• Must be a creative thinker who takes full accountability
• Must be a team player who thrives in a startup culture with minimal or evolving policies and procedures and is confident in sharing opinions with all levels of management
• Must be enthusiastic and self‑motivated
• Very good knowledge of German and English. A third language is a plus
• Proficiency with MS Office

We offer: Work culture

• Flat hierarchies & creative freedom: Your ideas count and your work has a direct impact.
• Team spirit: A supportive, warm atmosphere with helpful colleagues.

Onboarding & Development

• Comprehensive onboarding: An induction plan, mentoring and support right from the start.
• Career development: Continuous training, individual career planning and global project work.
• Attractive salary package with notebook and mobile phone
• 30 days holiday per year for a good work‑life balance