Energy Storage System (ESS) Intern (Summer)

Location: North Kingstown, Rhode Island, USA. Onsite engineering internship; a housing stipend is available for those temporarily moving to join the team.

Company

hirify.global is developing Seagliders, electric wing-in-ground-effect watercraft for fast, affordable, and sustainable regional coastal transportation.

What you will do

• Characterize battery packs under Seaglider mission conditions and track cell- and pack-level performance and safety data.
• Support Paladin test operations, including hands-on battery testing and servicing.
• Build Python or MATLAB simulations to model battery performance across mission profiles.
• Document battery-system integration into hirify.global’s high-voltage vehicle architecture across the Squire and Viceroy platforms.
• Develop energy budgets and Excel trade studies comparing cost, performance, and integration complexity.

Requirements

• Currently a senior or graduate student in mechanical, electrical, aerospace, or chemical engineering.
• Knowledge of lithium-ion battery systems, including capacity, C-rate, state of charge, internal resistance, voltage curves, and series/parallel configurations.
• Proficiency in Python or MATLAB for data analysis and modeling, plus comfort building energy budgets and trade studies in Excel.
• Ability to work independently through ambiguous problems and communicate technical findings and tradeoffs clearly to engineers.
• Collaborative, adaptable, creative, and improvement-oriented approach in a fast-paced startup environment.

Nice to have

• Familiarity with a 3D CAD tool such as SolidWorks, Fusion, or Creo and the ability to produce clear drawings.
• Exposure to pack-level design, including cell selection, BMS architecture, busbars, or thermal management.
• Experience with battery simulation tools such as PyBaMM, Simulink/Simscape Battery, or COMSOL.

Culture & Benefits

• Competitive compensation and a housing stipend for eligible interns temporarily moving to the team’s location.
• Daily free catered lunches.
• Learning and professional development opportunities, mentorship, and guidance from experienced team members.
• Hands-on work on meaningful next-generation electric watercraft projects in a collaborative engineering environment.
• Equal opportunity employment and a commitment to a diverse and inclusive workplace.