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Eos Energy Enterprises

Engineer Sr, Tooling

Become a Sr. Tooling Engineer at Eos Energy in East Pittsburgh, Pennsylvania. Drive optimized tooling design for injection molded plastics to support advanced manufacturing. Collaborate with cross-functional teams and enjoy a role focused on strategic growth in renewable 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).


Last updated on 2026-02-23 | 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 Sr. Tooling Engineer drives optimized tooling design in the injection molded plastics supply chain to support world class manufacturing at scale. This role is part of an advanced manufacturing team focused on manufacturing capacity expansion and strategic growth.

Accountable For

The Sr. Tooling Engineer is responsible for assessing the current and future manufacturing capabilities of injection mold tooling and process in the supply chain. They will work closely with supply chain, procurement, quality, manufacturing and the network of injection molded plastics suppliers to develop tool designs and process to support the strategic growth of the Eos manufacturing operation.

Responsibilities

  • Perform advanced DFMs, evaluate part feasibility and proactively provide solutions to meet both Engineering and Manufacturing requirements
  • Providing technical solutions and leading engineering sub-contractors in process design, layout, and construction of new plastics tooling
  • Designing and modelling all aspects of injection molds: Mold layout, parting lines, actions, and mechanism
  • Support validation and PPAP for new and updated tooling with the supplier quality team
  • Using a data-based approach to optimize molding processes to reach quality and production requirements
  • Work with the Quality Department to resolve RCCA's in manufacturing regarding injection molded components
  • Work with supplier quality to audit injection molders' tooling and processes and make recommendations for repairs or improvements to support production requirements and part quality performance.
  • Collaborate with product designers to improve the manufacturing feasibility of plastic parts using extensive tooling experience as well as industry best practices
  • Provide guidance in the selection of machinery and equipment to improve the performance and consistency of our injection molded part suppliers

Education and Experience

  • Bachelor's degree in mechanical engineering, Materials Engineering or Plastics Engineering
  • 10+ years of injection mold tooling design and manufacturing experience
  • Proficient in tool design with 3D modeling, SolidWorks preferred
  • Strong knowledge of plastics molding processes, post-molding operations, and mold flow simulations (filling and cooling analyses)
  • Strong knowledge of SPC, DOE, Design for Manufacturing (DFM), Design for Assembly (DFA), and GD&T principles
  • Effective communication and interpersonal skills for collaboration with internal teams and external vendors

Travel

  • Overnight/North America: 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 35 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.

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About the role

February 25, 2026

Full Time

Company

February 25, 2026

On-site

Eos Energy Enterprises

eose.com

  •  East Pittsburgh, Pennsylvania, United States

10+ years

UTC-05:00

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