We are looking for a Project Engineer – Battery Storage Systems (m/f/x) to join our team in Switzerland on a full-time basis, with a planned start in Q1 2027.

In this role, you will be responsible for the technical execution of battery energy storage projects from contract signature through installation, commissioning, and customer handover.

You will work closely with the Project Manager, customers, product team, suppliers, and contractors to ensure that Energy Vault’s battery storage systems are correctly engineered, integrated, installed, and commissioned in accordance with project requirements and Swiss standards.

The role combines electrical engineering, technical project coordination, documentation, and on-site support, with a particular focus on medium- and low-voltage interfaces, system integration, and construction readiness.

Key Responsibilities

• · Support battery storage projects from the engineering phase through commissioning and customer handover.
• · Act as the primary technical interface between the Project Manager, customer, internal product teams, suppliers, and contractors.
• · Define and coordinate the electrical integration of the battery storage system, including medium- and low-voltage interfaces.
• · Perform and/or review cable sizing, cable routing, grounding concepts, protection requirements, auxiliary systems, and electrical interfaces.
• · Prepare, review, and coordinate technical documentation including layouts, single-line diagrams, electrical schematics, cable lists, interface documents, and equipment specifications.
• · Review customer and contractor designs to ensure compatibility with Energy Vault equipment and project requirements.
• · Coordinate technical interfaces between batteries, PCS, transformers, MV switchgear, EMS/SCADA, auxiliary systems, and the customer’s electrical infrastructure.
• · Coordinate technical clarifications with engineering teams in Switzerland, the USA, and China.
• · Support procurement activities through technical evaluations, supplier clarifications, and review of equipment documentation.
• · Support installation readiness reviews and ensure that site electrical and civil interfaces are correctly prepared before equipment delivery.
• · Provide technical support during installation, testing, energization, and commissioning activities, including troubleshooting of electrical and automation systems and coordination with suppliers for the resolution of technical issues.
• · Participate in FAT, SAT, commissioning, performance testing, and customer acceptance activities.
• · Maintain accurate technical documentation and ensure that project documentation is updated to reflect final as-built conditions.

Skills and Experience

• · Strong understanding of electrical power systems and industrial electrical installations.
• · Experience with medium- and low-voltage systems, including transformers, switchgear, protection systems, cables, grounding, and auxiliary power systems.
• · Experience in battery storage, renewable energy, UPS systems, substations, industrial power systems, or similar electrical infrastructure projects is highly desirable.
• · Ability to read, prepare, and review single-line diagrams, electrical schematics, layouts, cable schedules, and technical specifications.
• · Knowledge of cable sizing, protection coordination, grounding, and electrical equipment selection.
• · Experience coordinating technical interfaces between different suppliers and engineering disciplines.
• · Familiarity with control systems, EMS, SCADA, communication networks, and industrial protocols is an advantage.
• · Strong problem-solving and analytical skills, with the ability to troubleshoot technical issues in both office and site environments.
• · Comfortable working autonomously within a multidisciplinary and international environment.
• · Hands-on attitude and willingness to support activities directly on project sites when required.

Qualifications

• · Degree in Electrical Engineering, Energy Engineering, Automation Engineering, or equivalent technical education.
• · Approximately 3–8 years of professional experience in electrical engineering, project engineering, commissioning, or site engineering within the energy or industrial electrical sector.
• · Knowledge of Swiss electrical standards, installation requirements, and grid connection processes.
• · Experience with relevant Swiss and European electrical standards and regulations.
• · Certification or authorization for work on low- and/or medium-voltage systems, including ESTI, NIV Art. 13, or equivalent, is considered a strong advantage.
• · Familiarity with project management and collaboration tools.
• . Experience with PLC programming and configuration, ideally using Beckhoff controllers, is considered an advantage.
• · Valid driver’s license, Category B.

Strongly required:

• · Proven experience in Electrical design, including development of single-line diagrams, wiring diagrams, panel layouts, and related project documentation.

Languages

• · German: fluent, required.
• · English: fluent, required.
• · French and/or Italian: considered an advantage.

Work Setup

• · Location: Lugano office or remote based in Central Switzerland
• · Presence at project sites across Switzerland will be required depending on project activities.
• · Availability to travel within Switzerland and occasionally abroad for supplier visits, FATs, training, and project activities, approximately 10–25%.
• · Start of work: Q1 2027.

Must Have

• · Location: Currently living in Ticino or Central Switzerland.
• · Languages: Fluent German and English.
• · Strong electrical engineering background.
• · Experience in electrical, energy, industrial, or infrastructure projects.
• · Ability to work independently and directly support project execution and site activities.