Eos Energy Enterprises

Engineer, Associate Materials and Failure Analysis

Join Eos Energy Enterprises in Thorn Hill, USA as an Associate Materials and Failure Analysis Engineer. Support battery failure investigations and gain hands-on experience in materials and quality analysis. Benefit from exposure to R&D, manufacturing, and supplier teams in a growing renewable energy company.

Eos Energy Enterprises

Company Overview

Name

Eos Energy Enterprises, Inc.

Headquarters

Edison, NJ, United States

Founded

2008

Size

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

The Associate Materials Failure Analysis Engineer will support the incoming materials quality program root-cause investigations into battery failures, working under the guidance of more senior engineers. This is a great opportunity for an early-career engineer to build hands-on experience in materials, electrochemistry, failure analysis techniques, and manufacturing quality. You'll gain exposure across supply chain, R&D, manufacturing, quality, and field service teams while developing core failure analysis skills.

Job Responsibilities

  • Support root-cause failure analysis (RCFA) investigations on battery modules, and systems under the direction of more senior engineers
  • Perform teardown, inspection, and testing of failed units returned from the field or flagged during production, following established protocols
  • Conduct analytical testing (electrical characterization, visual/optical inspection, thermal imaging, etc.) and document results accurately
  • Assist with incoming parts quality and inspection process, including measuring and analysis of components against drawings/specs and logging inspection results
  • Help maintain FMEA documentation and failure-mode databases for cell, module, and system components
  • Compile and organize failure data, helping build trend reports and dashboards for the engineering team
  • Support supplier quality investigations by gathering data and documentation on component-level issues
  • Assist with safety investigations by helping capture and organize findings and evidence
  • Draft initial failure analysis reports and summaries for review by senior engineers
  • Help maintain lab equipment, tooling, and organization as the failure analysis function grows

Education/Experience

  • Bachelor's degree in materials science, electrical engineering, mechanical engineering, chemical engineering, or a related field
  • 0-2 years of experience in failure analysis, reliability engineering, quality engineering, or a related lab/manufacturing environment

Skills/Abilities

  • Basic familiarity with failure analysis or inspection techniques (electrical testing, microscopy, dimensional inspection, etc.) through coursework, internships, or projects
  • Exposure to root-cause analysis methodologies (5-Why, Fishbone/Ishikawa, FMEA) a plus
  • Ability to read basic electrical schematics and mechanical drawings
  • Strong attention to detail and organizational skills
  • Clear written and verbal communication skills
  • Comfortable working hands-on in a lab and manufacturing environment
  • Eagerness to learn and grow into a more senior failure analysis role
  • Coursework or project experience with batteries or electrochemical systems
  • Familiarity with basic inspection tools (calipers, micrometers) and reading GD&T
  • Exposure to data analysis tools (Excel, Python, or Minitab)

Travel

  • Local Travel
  • Overnight/North America Travel: 10-25%

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

September 1, 2026

September 4, 2026

Full time

On-site

Company

Energy Storage

Eos Energy Enterprises

eose.com

  •  Thorn Hill, United States

0-2 years

UTC-05:00