The “Energy Systems” group of our “Sustainable Energy” Business Unit based in Neuchâtel, Switzerland, is currently looking for a Battery System Specialist.

Your mission

Your mission is the design and putting into operation of battery systems. You implement hardware systems with power ratings up to 100 kW and voltage levels ranging from 48 V up to 800 V and implement the required system level software that is required to operate these systems safely.

Your responsibilities

  • You design power system and define the hard- and software architecture of such systems.
  • You perform the system-level analysis, including applicable standards and safety procedures.
  • You plan and conduct design reviews together with the project teams.
  • You initiate and follow-up component procurement, including ordering and coordination of external contractors.
  • You realize battery system prototypes and demonstrators up to 100 kW and 800 V.
  • You develop test and validation plans for the functional verification at prototype level.
  • You realize the functional verification of the battery prototype and demonstrators.
  • You document your work, write technical reports/presentations, and share your insights with the team.

Your profile


  • MSc degree in Electrical or Control Engineering or related fields
  • Excellent knowledge in high-voltage and high-power system design and associated regulation/standards
  • Excellent knowledge in battery safety standards and associated testing and validation protocols
  • Good knowledge in communication protocols and associated software (TCP, IPv4/6, etc.)
  • Good knowledge in mechanical design and prototyping/manufacturing
  • Proven experience in prototyping of power systems up to 100 kW
  • Proven experience in both low-voltage (< 50V) and high-voltage systems (< 1kV)
  • Proven experience in using communication standards, e.g., wired (I2C, SPI, etc.) & wireless (BLE, WiFi, etc.)
  • Hands-on experience in testing and validation by using appropriate laboratory equipment
  • Professional proficiency in English (oral and written)
  • Experience in modelling/simulation of battery/energy systems (e.g., in python, Matlab, etc.) being a plus


Interpersonal skills

  • Open, creative, and result-oriented mindset
  • Highly motivated, eager to learn and with a strong sense of ownership
  • Autonomous with strong analytical capacity for solving technical problems and work organization
  • Clear presentation of accomplished work and potential issues
  • Natural curiosity and ability to work on multidisciplinary projects
  • Team player with good communication skills to interact constructively with colleagues and partners
  • Interest and motivation to join a startup that is scheduled to be created within the next two years being a plus

CSEM mission and values

Our mission is the development and transfer of innovative technologies to the Swiss industry and our strength is the excellence of our people who are passionate about technologies and innovation.

We are

  • A unique place between research and industry at the cutting edge of new technologies
  • An innovative, non-profit, and employee-driven company
  • A dynamic, multidisciplinary, and multicultural environment
  • A solar team focused on enabling solutions to energy challenges for a sustainable world

Working@CSEM means

  • being part of a passionate community
  • incredible flexibility, attractive working conditions, and great opportunities of development
  • benefit from a management style based on trust & feedback and that favors a work-life balance

We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity.

We look forward to receiving your complete application file via (CV, cover letter, certificates & diplomas) our job page.

Preference will be given to professionals applying directly.