Quick Summary
Requisition Number: XL2026-006 Position: Chemical Process Engineer Location: Marlborough, MA About Us XL Batteries,
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 Chemical Process 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.
XL Batteries is an equal opportunity employer.
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).
Responsibilities
~1 min read- →Strong foundation in Chemical Process Engineering and Process Engineering, with experience in industrial or pilot-scale environments.
- →Background in the Chemical Industry or closely related fields, ideally involving electrochemical systems, batteries, or energy storage
- →Demonstrated success scaling processes from lab/pilot to commercial scale.
- →Strong command of PFDs, P&IDs, mass/energy balances, control strategies, HAZOP, and regulatory documentation.
- →Track record delivering plants or major process units safely, on schedule, and on budget.
- →Excellent cross-functional communication, documentation, and project leadership
- →Skills in Process Design, including flowsheet development, equipment specification, and scale-up from lab to production
- →Hands-on lab or plant experience, including experimental design, process scale-up & optimization, troubleshooting, and root-cause analysis.
- →Knowledge of safety, environmental, and regulatory standards relevant to chemical processing.
Requirements
~1 min read- 5+years Bachelor’s or Master’s degree in Chemical Engineering or a closely related engineering discipline.
- Proficiency in process simulation and data analysis tools (e.g., Aspen, MATLAB, Python, or similar software) and experience using AI tools to accelerate technical documentation
- Ability to work on-site in Marlborough, MA, collaborate in cross-functional teams, 'go-to-market' partners
- Experience managing and communicating effectively with 'go-to-market' partners, engineering firms and ability to communicate complex technical & engineering concepts clearly.
- Experience in startup or fast-paced environments and an interest in sustainable energy technologies is a plus.
- Travel: 20-25%
What We Offer
~1 min readWe offer competitive salary (+equity) and benefits, including healthcare, dental, vision, and a retirement plan
Apply through xl-batteries.breezy.hr
Location & Eligibility
Listing Details
- Posted
- July 6, 2026
- First seen
- August 21, 2026
- Last seen
- August 21, 2026
Posting Health
- Days active
- 0
- Repost count
- 0
- Trust Level
- 15%
- Scored at
- August 21, 2026
Signal breakdown
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