Prototype Technician
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).
Last updated on Feb 23, 2026 | 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.
With safety as the top priority, Prototype Technicians are accountable for delivering batteries that meet product and quality specifications.
All prototype lab team members are responsible for producing the required number of cells and batteries for testing each day during the week. Team members are responsible for receiving, testing, analyzing, recording, and reporting results of the product and test. Team members work independently in different functional areas to meet the daily and weekly objectives and may be assigned to work in one or more of the following focuses :
- Prep
- Visually inspect each part for defects and cleanliness.
- Manually connect bolts, washers, and nuts.
- Heat shrink wrap on bolts and tie rods.
- Wash individual and pre-assembled components per supplied work instructions.
- Prepare modifications to parts where needed (shaving, cutting, drilling).
- Welding
- Visually inspect each part for defects and cleanliness.
- Use parallel welder to attach metal pieces to one another.
- Conductive Plastic Terminal
- Visually inspect each part for defects and cleanliness.
- Cut and prepare plastic according to work instruction.
- Assembly conductive plastic according to work instruction.
- Mark materials for identification and quality control.
- Run a hot press.
- Prepare, load, monitor, and unload part to the hot press.
- Assembly
- Visually inspect each part for defects and cleanliness.
- Align parts and connect according to work instructions.
- Update traveler with cell/battery specs.
- Quality Control
- Visually inspect each part for defects and cleanliness.
- Run tests to ensure battery is assembled correctly without leaks.
- Update traveler with cell/battery specs.
- Filling
- Measure and mix chemicals to create electrolyte batch.
- Measure and transfer electrolyte from batch to cells/batteries.
- Visually inspect each cell/battery for defects and cleanliness.
- Update traveler with cell/battery specs.
- Measuring
- Visually inspect each part for defects and cleanliness.
- Run electrochemical tests and update traveler with details.
- Field Projects
- The prototype team may occasionally be asked to assist the Field Operations team with:
- Manual labor in renewable construction projects.
- Connecting batteries
- Running tests to ensure battery is installed correctly without any damage.
Responsibilities
- Help equipment operators and other skilled labor when necessary
- Assist to maintain a clean job site.
- Abide by all company regulations, policies, work procedures and instruction
- Load or unload construction materials.
- All Team Members are responsible for maintaining shop cleanliness and assisting in maintain material inventory.
- Other duties, responsibilities and activities may change or be assigned at any time with or without notice.
Knowledge, Skills, and Abilities
- Strong knowledge of shop equipment (CNS's routers, table saw, drill press, welders, and other hand tools) and work safety.
- Good communication and organization skills
- Knowledge of inspection tools such as dial clippers, micrometers, profilometers and other shop related inspection tools.
- Ability to collaborate with design team in order to refine existing design efforts.
- Background in R&D environment a plus
Education and Experience
- High school diploma or equivalent required.
- Associate degree or trade school preferred.
- No prior experience required.
Travel
- Local Travel
- Overnight/North America Travel: Less than 10%
Working Conditions
- 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 50pounds 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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Apply now
Job expired?Please let Eos Energy Enterprises know you found this job on Rejobs. This will help us grow and get more people to work on renewable energy!
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About the role
April 6, 2026
Full time
Company
- Edison, United States
Entry-level
UTC-05:00