We pioneered the Organic SolidFlow battery

CMBlu Energy is on an exciting journey towards becoming a global cleantech company. Our mission is to enable unlimited energy storage modelled on nature - for everyone, worldwide.

WhatareSolidFlowbatteries?

SolidFlow batteries store energy in organic molecules. The absence of explosive materials makes them safe, the use of socially and ecologically conflict-free raw materials makes them sustainable and the almost unlimited availability of materials makes them scalable and cheap to procure. This makes our patented SolidFlow technology a game changer in the development of a global climate-neutral energy system.

From****start-up to scale-up**:** we'retacklingit****together

CMBlu Energy is developing from a start-up focussing on research into a manufacturing scale-up that is on its way to series production. Around 240 employees are working towards this goal at CMBlu Energy. Our head office is in Alzenau near Frankfurt, with a branch office in Obernburg. There are also subsidiaries in Athens, Greece and Petaluma, USA.

Your Responsibilities

• Define electrical requirements for power flow, protection, and monitoring components within our battery energy storage and power conversion systems
• Derive requirements from customer specifications, project constraints, risk assessments, and applicable IEC, EN, and VDE standards while ensuring alignment with mechanical, thermal, software, and integration requirements
• Perform electrical calculations and analyses including cable and busbar sizing, short-circuit behavior, voltage drop, thermal loading, protection coordination, insulation concepts, and fault scenarios
• Develop and contribute to electrical system architectures covering HV and LV distribution, communication interfaces, protection philosophies, fault handling, and system integration concepts
• Define testing and validation requirements, acceptance criteria, and compliance documentation while supporting FAT, SAT, certification, and customer compliance activities
• Support customer projects throughout the entire lifecycle, participate in design reviews, FMEAs, risk assessments, and hazard analyses, and coordinate electrical testing and commissioning activities

Your Profile

• Degree in Electrical Engineering, Energy Technology, Power Electronics, or a comparable field
• Several years of experience in high-voltage electrical systems, industrial power systems, energy storage, power conversion, e-mobility, aerospace, or comparable high-power applications
• Strong knowledge of relevant IEC, EN, and VDE standards as well as deep expertise in HV design, protection concepts, grounding, insulation monitoring, short-circuit behavior, and thermal design
• Experience defining and reviewing technical requirements, electrical architectures, component specifications, validation plans, and verification evidence
• Proven ability to work effectively across multidisciplinary teams including engineering, product development, procurement, production, and customer project organizations, ideally with experience in battery energy storage systems or grid-connected power conversion systems
• Fluent in English and German, with experience using automation, scripting, or AI-based tools to improve engineering workflows considered a plus

Our Benefits at CMBlu Energy AG for You:

• VSOP Program: With our Virtual Stock Option Program (VSOP), you can be part of the success of CMBlu Energy AG and benefit from the growth of our company.
• Deutschland-Ticket: We fully cover the cost of a Germany-wide train ticket, allowing you to travel sustainably and comfortably.
• Meaningful work: Work on the development of our innovative Organic SolidFlow battery, which makes an important contribution to sustainable energy use and storage.
• Remote Work: Depending on the role, we