Jobs and Careers
Hybrid PA, United States, United StatesRemotefull_timeVerifiedPosted 6 Mar 2026

About the role

About Eos Energy Enterprises

Eos Energy Enterprises, Inc. is accelerating the shift to American energy independence with positively ingenious solutions that transform how the world stores power. Our breakthrough Znyth™ aqueous zinc battery was designed to overcome the limitations of conventional lithium-ion technology. It is safe, scalable, efficient, sustainable, manufactured in the U.S., and the core of our innovative systems that today provides utility, industrial, and commercial customers with a proven, reliable energy storage alternative for 3 to 12-hour applications. Eos was founded in 2008 and is headquartered in Edison, New Jersey. For more information about Eos (NASDAQ: EOSE), visit eose.com.

About the Role

The Project Engineer will be responsible for performing technical work to deliver Battery Energy Storage Systems (ESS). Project Engineer will work with cross-functional teams to ensure technical requirements for clients BESS (Battery Energy Storage) projects are fulfilled to company and customer expectations. This is a customer facing position, to create utility scale battery storage systems throughout the United States and the rest of the world.

Accountable For:

Executing the project engineering efforts in developing and designing battery energy storage systems (BESS) as well as their power electronics and controls. The tasks include maintaining existing projects and supporting the creation of automated test equipment for project deployments.

Responsibilities

  • Develop, coordinate, review, and maintain technical oversight of engineering and design of contracted energy storage projects.

  • Design and review the BESS, including power conversion systems (Inverters & DC/DC Converters), isolation and power transformers, medium voltage switchgear, protection and control systems, grounding, low and medium voltage ac and dc cable systems, and plant auxiliary equipment.

  • Work closely with Project Managers, Engineers, Customers, AHJs, and others to meet the contractual commitments. Act as a technical consultant for other Eos units and for more junior PEs.

  • Develop specifications, drawings and controls and protections strategies for contracted projects.

  • Participate in continuous improvement of standard processes, procedures, documentation, and tools to effectively deliver a wide range of project solutions. 

  • Ensure all project engineering deliverables for assigned projects are on schedule / on budget and communicate project status to internal and external audiences via standardized project controls systems.

  • Work with other engineers pre- and post-contract award to optimize customer BESS solutions, use case reviews and commercial proposal strategies and processes.

  • Maintain project documentation and assist in creating vendor technical specifications and user instructions for optimal use of the designed BESS.

  • Provide support to Field Service Technicians when troubleshooting in field commissioning and service operations.

  • Understand and utilize technical standards for reviews, documentation, and designs such as UL, UN, IEC, ISO, ECE and other engineering standards.

  • Collaborate with Product Engineering to define, refine and improve BESS systems.

  • Other duties, responsibilities and activities may change or be assigned at any time with or without notice, in the spirit of an agile design group within an active technology company

Knowledge, Skills, and Abilities

  • Ability to work independently and on-site and understand how components fit into a larger system

  • Working knowledge of embedded control systems and their applications

  • General knowledge of CAD and the ability to interpret mechanical and electrical engineering drawings.

  • Strong troubleshooting skills for diagnosis and design improvement

  • Familiarity with design for ground fault and EMC and availability to trace down GFI and EMI issues

  • Awareness of safety certification process to standards such as UL

  • Competent skills with communications protocols such as TCP/IP, CAN, i²C and SPI; use of Modbus

  • Capability to select and integrate off-the-shelf component and equipment

  • Strong cross-discipline system skills

  • Understanding of hardware and physical system being controlled is required

  • Comfort and experience with the hazard and safety protocols of high voltage equipment and other aspects of working with large-scale battery systems

  • Ability to self-direct to a goal and ach

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Company

Eos Energy Enterprises, Inc.

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