Battery Engineer

DivIHN Integration Inc; San Jose (CA); On-site; USD 90,000 - 120,000; Full time

Job summary

A leading technology firm is seeking a Sr. Battery Engineer to drive the next generation of microbattery technologies. The ideal candidate will have hands-on experience in solid-state battery development, including cell design and electrochemical testing. Responsibilities include optimizing cell architectures, troubleshooting, and collaborating with teams on prototypes. The position is contract-based in San Jose, CA, ideally for candidates with relevant advanced degrees and practical experience.

Qualifications

• 3 years of experience in electrochemistry or battery development.
• Hands-on experience with solid electrolytes like LiPON and sulfides.
• Knowledge of cathode/electrolyte integration and failure analysis.

Responsibilities

• Develop and optimize solid-state cell architectures.
• Perform hands-on cell-level testing and troubleshooting.
• Collaborate with cross-functional teams on battery prototypes.

Skills

Solid-state battery development

Hands-on laboratory experience

Electrochemical testing

Cell design

Cell design and fabrication

Education

PhD or MS in Materials Science, Electrochemistry, Chemical Engineering

Tools

Thin-film deposition techniques

Job description

Title: Sr. Battery Engineer

Duration: 6 Months

Location: San Jose, CA

Schedule: M-F, 7am - 4pm or 8am - 5pm

Initial 6 month duration, extension is possible, not guaranteed

Description

• Client is seeking a highly motivated Battery Engineer with expertise in solid-state battery development to join a fast-paced, innovative, and collaborative team driving the next generation of microbattery energy storage technologies.
• The ideal candidate will bring hands‑on laboratory experience with solid electrolytes, cathode integration, and cell testing/analysis. The role involves material optimization, cell prototyping, and process development to advance next-generation energy storage technologies.

Key Responsibilities

• Develop and optimize solid‑state cell architectures, focusing on cathode optimization and solid electrolyte interfaces.
• Experience in anode‑free cell configurations including deposition, interface engineering, and evaluating stability against solid electrolytes.
• Integrate cathode materials with solid electrolytes to improve performance, cycle life, and reliability.
• Hands‑on cell fabrication and prototyping, including electrolyte deposition, cathode integration, and full‑cell assembly.
• Perform hands‑on cell‑level testing (cycling, impedance, rate capability, DC polarization) and translate data into meaningful failure mechanisms.
• Characterize electrochemical performance (EIS, CV, cycling) and correlate results to material and interface properties.
• Troubleshoot cell failures through structured root‑cause analysis and propose engineering solutions.
• Support thin‑film deposition, coating, and integration processes for electrolyte and electrode layers.
• Collaborate with cross‑functional teams on design, fabrication, and scale‑up of solid‑state battery prototypes.

Required qualifications

• PhD or MS in Materials Science, Electrochemistry, Chemical Engineering, or related field with 3 years of experience in the fields of electrochemistry, battery development, cell design or other related experiences. Manager will consider additional years experience in lieu of the higher level education.
• Hands‑on experience with solid electrolytes such as LiPON, sulfides, garnets, or polymer‑based systems.
• Knowledge of thin‑film deposition techniques (sputtering, ALD, evaporation) and cathode/electrolyte integration.
• Strong background in hands‑on electrochemical testing and failure analysis (EIS, impedance growth modeling, capacity fade diagnostics).
• Experience with hands‑on cell design, fabrication, and scaling for solid‑state battery prototypes.

Interview process

1st round interview via Teams with Client manager and a Client engineer; 2nd round interview with Ensurge team members

Seniority level

Mid‑Senior level

Employment type

Contract