Battery Materials Characterization Engineer

Job Overview

Do you have a passion for invention and self-challenge? Do you thrive on pushing the limits of what’s considered feasible? As part of our Battery Engineering group, you’ll help craft creative battery solutions that deliver more energy in smaller spaces than ever before! You’ll work across fields to transform improved hardware elements into a single, integrated design. Join us, and you’ll help us innovate new battery technologies that continually outperform the previous iterations.

By collaborating with other product development groups across Apple, you’ll push the industry boundaries of what batteries can do and improve the product experience for our customers across the world.

• Acquire, analyze, and interpret data using in‑situ/ex‑situ Raman microscopy/mapping for structural characterization and chemical analysis of Li‑ion battery materials (cathodes, anodes, electrolytes, interfaces, and degradation products).
• Conduct SEM and FIB‑SEM analysis for morphological, cross‑sectional, and microstructural characterization of battery materials and cell components.
• Perform FTIR spectroscopy measurements for chemical identification and analysis of battery material surfaces, SEI layers, and electrolyte decomposition products.
• Optimize acquisition parameters and develop new methods across Raman, SEM, FIB‑SEM, FTIR, and other relevant techniques.
• Identify and define the proper characterization techniques for submitted samples and implement focused characterization projects using multiple complementary techniques to drive root‑cause analysis and a deep material understanding.
• Collaborate with other departments, including production and R&D, on projects involving process–property (materials)–performance relationships.
• Get trained on and support additional characterization techniques, and review data from other analysts.
• Adhere to best‑of‑class lab practices: maintain an organized and clean laboratory environment, ensure sample piece location is controlled, and follow all lab safety regulations.

• BS in chemistry, materials science, chemical engineering, or related field, with a minimum of 3 years of relevant industry experience.
• Experience with Raman spectroscopy or relevant.
• Experience with at least one characterization technique – SEM, FTIR or XRD.
• M.S. or Ph.D. in chemistry, materials science, chemical engineering, or related field, with graduate‑level coursework or research involving Raman spectroscopy and electron microscopy applied to energy storage materials.
• Deep knowledge of Raman spectroscopy for Li‑ion battery materials, including interpretation of spectra for common materials (e.g., graphite, silicon, NMC/NCA cathodes, LFP, solid electrolytes).
• Hands‑on experience with SEM and FIB‑SEM, including sample preparation, cross‑sectioning, imaging, and EDS analysis of battery materials.
• Proficiency in FTIR spectroscopy (transmission, ATR, and/or microscopy modes) for chemical characterization of battery‑relevant materials.
• Demonstrated track record of applying Raman and complementary characterization techniques (SEM, FIB‑SEM, FTIR) to solve critical problems in battery material development and/or identification of battery degradation mechanisms.
• Experience handling and preparing air‑sensitive battery materials (glovebox operation, inert atmosphere sample transfer).
• Experience with additional characterization techniques such as XRD, XPS, TEM, or optical microscopy.