<h1><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXeCuMQyYnUgnPKMVYs71uLaMBdaRwxz0iWx1V51hvpbEpqoVPWvBarNsGIDBQSp8UQVX9iTOk8j0kyS8qSJM8M9-WkiekbGEQ_2eojKoCz5i2UhHr4CumNZHH5V_uhv_yNIBB7WZg?key=4tuLAyRnRzW9j0FT6_HCKQ"></h1><p></p><h1><strong>Requisition Number:</strong>  XL2025-002</h1><h1><strong>Position</strong>:  Stack Prototype Engineer</h1><p><strong>Location:</strong>  Marlborough, MA</p><p><strong>About Us</strong></p><p>XL Batteries, a Massachusetts-based development stage company focused on long duration energy storage at the grid level.  We are growing a highly collaborative team with the addition of a Principal Battery Systems Engineer. Our mission is to create a safe, low-cost and reliable grid-scale battery that will enable the transition of the grid from fossil fuels to renewable sources.   We are a fast paced, nimble startup where no job is too big or small, and where we strive to ask ourselves the hard questions before problems arise.</p><p>XL Batteries is an equal opportunity employer</p><h1><strong>About Our Location</strong></h1><p>Marlborough, MA is a beautiful small city in central Massachusetts, surrounded by quaint  Massachusetts towns and within a day-trip distance of the Berkshires, White Mountains, and Cape Cod. For those who prefer a more urban lifestyle, we are located directly off I-495 within  easy commuting distance of Boston and Cambridge (30-40 minutes), Worcester (25 minutes),  Nashua, NH (45 minutes) and Providence, RI (50 minutes). </p><h1><strong>About You</strong></h1><p>We are seeking talented engineers, machinists and makers with a proven track record who are looking to develop an industry-leading storage technology. We are looking for teammates who are collaborative and creative.</p><p>Each team member has an opportunity to truly impact XL Batteries, and with that mentality we need team members that are excited to work in a fast paced startup environment that is ever changing, where no job is too big or too small, and where we strive to constantly learn and grow.</p><h1><strong>Responsibilities</strong></h1><ul><li>Manage a prototype machine shop where you will operate and guide others in operating prototyping equipment safely and efficiently (3D printers, CNC routers, laser cutters, basic workshop power tools, etc.).</li><li>Manage the safety and cleanliness of the prototyping machine shop.</li><li>Recommend tooling and equipment to improve producibility of stack designs.</li><li>Prototype and assemble electrochemical components and cells to support testing objectives.</li><li>Ability to identify and resolve technical issues with equipment as well as manufactured parts.</li><li>Recommend design changes to improve manufacturability of stack components and assembly of stack components.</li><li>Record appropriate data, analyze, and report the results to a cross-functional team.</li><li>Generate SOPs and guide team mates in meeting SOP requirements.</li></ul><ul><li>Own and meet milestones using Objectives and Key Results (OKRs).</li></ul><h1><strong>Qualifications</strong></h1><h2><strong>Required</strong></h2><ul><li>B.S. in Mechanical, Electrical Engineering or related fields or B.A. in same with production experience.</li><li>Fundamental knowledge of electrochemistry, thermodynamics, fluid dynamics, heat &amp; mass transfer, chemical kinetics, and materials.</li><li>Electrochemical engineering development experience in a relevant field such as fuel cell, electrolyzer, and flow battery.</li><li>Ability to think critically.</li><li>Mechanically inclined.</li><li>Execution/results-oriented mindset.</li><li>Hands on experience running 3D prototyping technologies (e.g., CNC, 3D printers).</li><li>Demonstrated experience using various CAD software tools.</li><li>Ability to develop code to run machine shop equipment and 3D printers from CAD generated designs.</li><li> A “maker’s mindset”: comfortable bringing ideas quickly from paper to prototype.</li><li>The ability to adapt quickly to changing processes and responsibilities</li><li>Excellent interpersonal and communication skills.</li><li>A safety-first mindset; share potential risks with others before they result in hazardous outcomes.</li><li>Highly motivated and self-driven with the ability to work independently.</li><li>The ability to set priorities while juggling multiple tasks.</li><li>Strong written and oral communication skills required.</li><li>Must be comfortable lifting heavy objects.</li><li>Must have legal authorization to work in the United States.</li></ul><p><strong>Preferred</strong></p><ul><li>5+ years working in a prototyping environment</li><li>Experience with lean manufacturing techniques</li><li>Experience with Solid Works</li></ul><h1><strong>Compensation &amp; Benefits</strong></h1><ul><li>We offer competitive salary and benefits,  including healthcare, dental, vision, and a retirement plan.</li></ul><h1><strong>Application Process</strong></h1><ul><li>Apply through xl-batteries.breezy.hr</li></ul>

Stack Prototype Engineer

<h1><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXeCuMQyYnUgnPKMVYs71uLaMBdaRwxz0iWx1V51hvpbEpqoVPWvBarNsGIDBQSp8UQVX9iTOk8j0kyS8qSJM8M9-WkiekbGEQ_2eojKoCz5i2UhHr4CumNZHH5V_uhv_yNIBB7WZg?key=4tuLAyRnRzW9j0FT6_HCKQ"></h1><p></p><h1><strong>Requisition Number:</strong>&nbsp; XL2025-002</h1><h1><strong>Position</strong>:&nbsp; Stack Prototype Engineer</h1><p><strong>Location:</strong>&nbsp; Marlborough, MA</p><p><strong>About Us</strong></p><p>XL Batteries, a Massachusetts-based development stage company focused on long duration energy storage at the grid level.&nbsp; We are growing a highly collaborative team with the addition of a Principal Battery Systems Engineer. Our mission is to create a safe, low-cost and reliable grid-scale battery that will enable the transition of the grid from fossil fuels to renewable sources. &nbsp; We are a fast paced, nimble startup where no job is too big or small, and where we strive to ask ourselves the hard questions before problems arise.</p><p>XL Batteries is an equal opportunity employer</p><h1><strong>About Our Location</strong></h1><p>Marlborough, MA is a beautiful small city in central Massachusetts, surrounded by quaint&nbsp; Massachusetts towns and within a day-trip distance of the Berkshires, White Mountains, and Cape Cod. For those who prefer a more urban lifestyle, we are located directly off I-495 within&nbsp; easy commuting distance of Boston and Cambridge (30-40 minutes), Worcester (25 minutes),&nbsp; Nashua, NH (45 minutes) and Providence, RI (50 minutes).&nbsp;</p><h1><strong>About You</strong></h1><p>We are seeking talented engineers, machinists and makers with a proven track record who are looking to develop an industry-leading storage technology. We are looking for teammates who are collaborative and creative.</p><p>Each team member has an opportunity to truly impact XL Batteries, and with that mentality we need team members that are excited to work in a fast paced startup environment that is ever changing, where no job is too big or too small, and where we strive to constantly learn and grow.</p><h1><strong>Responsibilities</strong></h1><ul><li>Manage a prototype machine shop where you will operate and guide others in operating prototyping equipment safely and efficiently (3D printers, CNC routers, laser cutters, basic workshop power tools, etc.).</li><li>Manage the safety and cleanliness of the prototyping machine shop.</li><li>Recommend tooling and equipment to improve producibility of stack designs.</li><li>Prototype and assemble electrochemical components and cells to support testing objectives.</li><li>Ability to identify and resolve technical issues with equipment as well as manufactured parts.</li><li>Recommend design changes to improve manufacturability of stack components and assembly of stack components.</li><li>Record appropriate data, analyze, and report the results to a cross-functional team.</li><li>Generate SOPs and guide team mates in meeting SOP requirements.</li></ul><ul><li>Own and meet milestones using Objectives and Key Results (OKRs).</li></ul><h1><strong>Qualifications</strong></h1><h2><strong>Required</strong></h2><ul><li>B.S. in Mechanical, Electrical Engineering or related fields or B.A. in same with production experience.</li><li>Fundamental knowledge of electrochemistry, thermodynamics, fluid dynamics, heat &amp; mass transfer, chemical kinetics, and materials.</li><li>Electrochemical engineering development experience in a relevant field such as fuel cell, electrolyzer, and flow battery.</li><li>Ability to think critically.</li><li>Mechanically inclined.</li><li>Execution/results-oriented mindset.</li><li>Hands on experience running 3D prototyping technologies (e.g., CNC, 3D printers).</li><li>Demonstrated experience using various CAD software tools.</li><li>Ability to develop code to run machine shop equipment and 3D printers from CAD generated designs.</li><li>&nbsp;A “maker’s mindset”: comfortable bringing ideas quickly from paper to prototype.</li><li>The ability to adapt quickly to changing processes and responsibilities</li><li>Excellent interpersonal and communication skills.</li><li>A safety-first mindset; share potential risks with others before they result in hazardous outcomes.</li><li>Highly motivated and self-driven with the ability to work independently.</li><li>The ability to set priorities while juggling multiple tasks.</li><li>Strong written and oral communication skills required.</li><li>Must be comfortable lifting heavy objects.</li><li>Must have legal authorization to work in the United States.</li></ul><p><strong>Preferred</strong></p><ul><li>5+ years working in a prototyping environment</li><li>Experience with lean manufacturing techniques</li><li>Experience with Solid Works</li></ul><h1><strong>Compensation &amp; Benefits</strong></h1><ul><li>We offer competitive salary and benefits,&nbsp; including healthcare, dental, vision, and a retirement plan.</li></ul><h1><strong>Application Process</strong></h1><ul><li>Apply through xl-batteries.breezy.hr</li></ul>

Stack Prototype Engineer

About the Job

About the Company

XL Batteries

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