Zēlos Energy Ltd · 1 day ago
Senior Battery Process Quality Engineer
San Leandro, CA
Full-time
Onsite
Senior Level
5+ years expZēlos Energy Ltd develops next-generation rechargeable zinc-based battery technology for critical applications. They are seeking a Senior Battery Process Quality Engineer to lead quality systems, material validation, and process control across their battery and materials manufacturing operations.
BatteryEnergyEnergy Management
No H1B
Responsibilities
Develop and implement test methods for material and process properties across internal labs and external manufacturing partners
Lead the creation of test specifications, acceptance criteria, validation methods, and quality control plans that directly support product requirements and reliability targets
Set up initial workflows, documentation, and traceability frameworks to support scaling
Serve as the primary technical authority for material property evaluation and process capability across the manufacturing chain
Mentor and work closely with a team including engineers and lab technicians
Set priorities, guide daily activities, and ensure high-quality execution of testing, analysis, and process verification tasks
Build a strong, hands-on quality culture across the organization
Design lightweight but scalable data collection and analysis processes—using pragmatic tools initially, with a path toward automation as we grow
Ensure completeness, accuracy, and traceability of material and process data
Drive root cause investigations, trend analysis, and data-driven decision-making
Lead regular reviews of quality data and drive systemic corrective actions
Act as the quality lead for contract manufacturers and key material suppliers
Establish quality expectations with contract manufacturers and suppliers
Collaborate closely with external partners to ensure adherence to process controls, test requirements, and material specifications
Conduct on-site visits, lead audits, implement corrective actions, and build long-term quality relationships
Work directly with the internal technical team and leadership to rapidly iterate and refine processes
Support scale-up activities, pilot runs, early production trials, and transfer-to-manufacturing efforts
Support new product introduction, pilot builds, ramp-up activities, and process transfer to contract manufacturers
Ensure that processes are defined, documented, and implemented consistently across all production environments
Qualification
Required
Bachelor's or Master's degree in Materials Science, Chemical Engineering, Mechanical Engineering, or similar field
5+ years in quality, process engineering, materials characterization, or battery manufacturing
Hands-on experience building or improving systems in ambiguous, fast-paced environments
Hands-on experience with lithium-ion or alkaline battery manufacturing, electrode fabrication, or advanced materials processing
Proven experience working with contract manufacturers and suppliers in a high-precision production environment
Excellent verbal and written communication skills, self-motivated, and comfortable working both independently and cross-functionally in a small team, including handling tasks outside of the job description on occasion as needed
Willing to travel both domestically and internationally (e.g. Europe, Asia) - including ability to swiftly obtain required travel documents - on short notice and for itineraries of varying duration
Preferred
Experience launching new lines, processes, or factories
Background in lithium-ion, alkaline, or other electrochemical system manufacturing
Experience deploying practical data systems (MES, SQL, Python, or similar)
Demonstrated cross-cultural communication skills and sensitivity to diverse cultural norms and practices
Knowledge of foreign languages (Chinese, Japanese) is a plus
Benefits
Health, dental, and vision insurance
401(k)
Unlimited PTO
Company
Zēlos Energy Ltd
Zēlos Energy is committed to building the next generation of green batteries.
11-50 employees
Funding
Current Stage
Early StageTotal Funding
$3.13MKey Investors
California Energy Commission
2020-08-20Grant· $1.7M
2020-02-11Series Unknown· $0.94M
2017-05-19Series Unknown
Leadership Team
Sebastien Belanger
CEO, Chairman of the Board, and Co-Founder
Recent News
2025-04-02
2025-02-14
Google Patent
2025-02-14
Company data provided by crunchbase