Battery Systems Engineer (EV)

Location: Palo Alto, United States; on-site

Salary: $150,000–$255,000 per year, depending on experience, qualifications, and location.

Company

hirify.global is an electric mobility company developing vertically integrated small electric vehicles designed to improve local transportation efficiency.

What you will do

• Own battery system architecture, analytical foundations, and trade studies across chemistry, pack topology, cell selection, state-of-charge windows, and operating limits.
• Build electrical, thermal, and degradation models at cell and pack level using real-world duty cycles and mission profiles.
• Define charging strategy, operational use cases, degradation management, user-facing battery behavior, and end-of-life operating strategy.
• Lead cell evaluation and down-selection, characterization plans, and translation of cell behavior into pack models and BMS operating envelopes.
• Define system requirements covering protection thresholds, thermal limits, charge and discharge constraints, contactors, fuses, fault detection, and end-of-life criteria.
• Support bench and vehicle bring-up, test-case definition, and model-to-measurement correlation across electrical, thermal, and degradation domains.

Requirements

• 8+ years of battery systems engineering experience with ownership of battery architecture and requirements on a shipped product.
• Deep knowledge of lithium-ion cell behavior, electrochemical principles, thermal characteristics, degradation mechanisms, duty cycles, and pack design constraints.
• Hands-on experience building equivalent-circuit, thermal-network, degradation, and pack-level simulations from scratch using Python, MATLAB, and Simulink.
• Experience developing or validating EV or electrified powertrain duty cycles and translating mission profiles into battery requirements and operating limits.
• Ability to translate cell and pack behavior into BMS hardware and firmware requirements and collaborate with embedded, controls, and BMS teams.
• BS or MS in Electrical Engineering, Mechanical Engineering, or a related field.

Nice to have

• Cell characterization experience, including HPPC, OCV curves, and degradation cycling.
• Familiarity with SOC, SOH, and SOE state-estimation algorithms and their controls interfaces.
• Experience with Ansys Mechanical, Fluent, Icepak, or equivalent simulation tools, and fast-charge protocol development.
• Background in small EVs, two-wheelers, or light electric mobility platforms.
• Experience with requirements management tools and framing engineering tradeoffs around cost, program risk, and product impact.

Culture & Benefits

• Hands-on work within a growing battery engineering team developing new electric mobility products.
• Health, dental, and vision insurance covered up to 100%, with FSA and HSA options.
• One Medical membership and dedicated insurance advocates.
• Fertility and family-building benefits through Progyny.
• Flexible time off and a 401(k) match.