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Eos Energy Enterprises

Project Engineer

Become a Project Engineer with Eos Energy Enterprises in East Pittsburgh, Pennsylvania. You'll deliver Battery Energy Storage Systems, collaborating with cross-functional teams to meet client expectations. Enjoy a dynamic work environment and the opportunity to contribute to sustainable energy solutions.

Eos Energy Enterprises

Company Overview

Eos Energy Enterprises, Inc.

Edison, NJ, United States

2008

Approximately 430 employees (source: stockanalysis.com).

What They Do

Eos Energy Enterprises specializes in developing innovative zinc-powered battery energy storage systems (BESS), particularly their proprietary Znyth® aqueous zinc battery technology. This technology is designed for long-duration energy storage, offering discharge durations ranging from 3 to 12 hours, which provides a viable alternative to traditional lithium-ion and lead-acid batteries. The company emphasizes safety, scalability, and efficiency, with a 20-year useful life for its products, all manufactured in the U.S. (source: stockanalysis.com). Their product lineup includes the Z3 battery module, battery management systems for remote monitoring, and comprehensive project management services, catering to utility-scale, microgrid, and commercial applications to address grid complexity and renewable energy intermittency (source: eose.com). Target markets include utilities, independent power producers, and commercial customers, with a focus on integrating renewable energy sources like solar and wind into their systems (source: mapquest.com). Eos differentiates itself through its non-flammable zinc chemistry, positioning against competitors such as ESS Inc. and Form Energy, and aims to enhance grid stability through long-duration storage solutions (source: dcfmodeling.com).

Projects & Track Record

Eos Energy Enterprises has made significant strides in the energy storage sector, with notable projects including the first commercial shipments of its Znyth® technology in 2017, marking a successful transition from research and development to market entry (source: dcfmodeling.com). A key project involved a $20 million order from EnerSmart for a 9MWh installation in El Cajon, California, aimed at enhancing grid stability and scheduled for deployment in Q4 2021 (source: eose.com). Ongoing projects include a commitment to deliver between 90MWh and 180MWh of Znyth®-powered storage across multiple locations in California, reflecting the growing demand for long-duration energy solutions (source: eose.com). The expansion of their Turtle Creek manufacturing facility is crucial for scaling production to meet these demands and support future growth (source: dcfmodeling.com). Key clients include EnerSmart, which focuses on utility-scale projects, and partnerships are being developed to enhance supply chain efficiency and installation speed (source: eose.com).

Recent Developments

In recent years, Eos Energy Enterprises secured its largest order to date, a $20 million contract from EnerSmart for energy storage solutions, underscoring the increasing demand for their technology in California (source: eose.com). The company has also aggressively expanded its manufacturing capabilities at the Turtle Creek facility, transitioning to high-volume production following its public listing in 2020 (source: dcfmodeling.com). While no specific acquisitions or mergers have been reported since the SPAC merger, the EnerSmart deal represents a significant commercial milestone for Eos, highlighting its growth trajectory in the energy storage market (source: eose.com).

Working There

Eos Energy Enterprises offers a diverse range of roles across various departments, including engineering, product management, sales, marketing, operations, finance, and HR. The company actively recruits talent for positions in software development, infrastructure, and storage systems, with a focus on fostering innovation and collaboration within its teams (source: salestools.io). Most hiring occurs at the Edison headquarters, which is designed to support growth and innovation, as well as at the Turtle Creek manufacturing sites (source: eose.com). Eos promotes a company culture centered on continuous learning, employee well-being, and teamwork, with amenities that include open-plan offices, collaboration spaces, and fitness centers to enhance the work environment (source: salestools.io). While specific benefits such as health plans or PTO are not detailed, the company positions itself as a place where employees can make a positive impact through their work in clean energy (source: salestools.io).

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Last updated on 2025-12-26 | Report an issue

Job Description

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 achieve independent success
  • A team-player attitude and strong written/verbal communication skills are a must

Education and Experience

  • BS in Electrical Engineering, Computer Science, Computer Engineering (MS degree preferred) or related field, and a minimum of 2+ years of experience in all aspects of engineering development and product delivery.
  • Hardware and system design and troubleshooting.
  • Minimum 2 years' experience designed electronics and developing automated controls
  • Engineering Design Software experience
  • Linux, embedded systems
  • High voltage electrical systems

Travel

  • Overnight/North America: Less than 10%

Working Conditions

  • Office Environment - Must be able to remain in a stationary position 50% of the time and occasionally move about inside the office to access file cabinets, office machinery, etc. Required to have close visual acuity to perform an activity such as: preparing and analyzing data and figures; transcribing; viewing a computer terminal; extensive reading. May be required to exert up to 25 pounds of force occasionally to lift, carry, push, pull or otherwise move objects, including the human body.
  • Factory - The worker may be subject to hazards. Includes a variety of physical conditions, such as proximity to moving mechanical parts, vibration, moving vehicles, electrical current, exposure to temperature changes or exposure to chemicals. While performing the duties of this job, the employee may be exposed to fumes, airborne particles, odors, dust, mists, and gases. The noise level in the work environment can be loud. Required to have close visual acuity to perform an activity such as: preparing and analyzing data and figures; transcribing; viewing a computer terminal; extensive reading; visual inspection involving small defects, small parts, and/or operation of machines (including inspection); using measurement devices; and/or assembly or fabrication parts at distances close to the eyes
  • Machinery operation requires the use of safety equipment to include but not limited to eye safety glasses, hearing protectors, work boots, and lab coats. May be required to exert up to 50 pounds of force occasionally to lift, carry, push, pull or otherwise move objects, including the human body.
  • Customer/Partner Locations - Employee may visit customer or partner locations that may be comprised of office, manufacturing floor, laboratory environments and construction sites depending on the location and reason for visit.

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About the role

November 1, 2025

Full Time

Company

December 30, 2025

On-site

Eos Energy Enterprises

  •  East Pittsburgh, Pennsylvania, United States

Minimum 2+ years of experience

UTC-04:00

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