Principal Battery Test Engineer

Overview

Lead software for battery testing, handling hardware control, data pipelines, and AI/ML analytics.

Key Responsibilities

• software development
• test modeling
• ecosystem design
• lab work
• ai modeling
• data analysis

Tasks

About the team: The Electrical Test Team comprises engineers and technicians that create, manage and run electrical tests that are used to characterize cell samples across production and R&D. What we need: As Principal Test Software Engineer, you will be the primary software owner for our Test Engineering team. This is a high-impact role that requires a unique ability to balance high-level system architecture with deep, hands-on debugging of hardware and software interfaces. You will be the crucial link between the physical world of battery testing and our cloud data infrastructure, leveraging your fluency in AI and Machine Learning to transform massive datasets into actionable, predictive insights. -Develop scalable software solutions while diving deep to resolve lower-level issues on physical test hardware like battery cyclers and DAQs. -Develop standard test models to implement new test requirements across multiple equipment types. -Design, build, and maintain the complete software ecosystem for our advanced battery test systems, from hardware control to the start of data ingestion. -Occasional lab work in a clean dry lab will be required. -Apply AI/ML to build models for anomaly detection, outlier flagging, and predictive analysis to proactively uncover critical insights from test data. -Deep dive and analyze GB's of electrical test data extracting relevant insights and optimizing our data processing and analysis pipelines.

Requirements

• python
• gcp
• ml
• ci/cd
• sql
• bs/ms

What You Bring

ONSITE: This position is required to work onsite 5 days per week to meet the minimum essential duties and requirements of this position. As an on-site R&D and manufacturing operations organization, in-person face to face interaction is essential to building authentic relationships, trust, teamwork, and collaboration. Your communication skills will be as critical as your code, as you'll work daily with folks ranging from R&D scientists to production technicians, and other software engineers to translate complex requirements into robust, reliable, and intelligent software solutions that build value. -Exceptional communication skills, with the ability to articulate complex technical concepts to diverse audiences. -Demonstrated expertise in Python, Golang, or an object-oriented language. -Strong experience with cloud platforms (GCP) and deploying services in a cloud environment. -Practical AI/ML experience, including applying machine learning models for tasks such as anomaly detection, classification, or regression using common frameworks (e.g., scikit-learn, TensorFlow, PyTorch). -BS or MS in Computer Science, Electrical Engineering, or a related field. -Significant hands-on experience developing software that directly interfaces with and controls hardware, measurement equipment (e.g., DAQs, PLCs), or other physical systems. -Proficiency with both relational (SQL) and non-relational (NoSQL) databases. -Experience in a fast-paced R&D or manufacturing environment -Experience building and maintaining CI/CD pipelines (e.g., GitHub Actions, Jenkins, etc.). -10+ years of professional software engineering experience, with a proven track record of shipping and maintaining complex software systems. -Experience with commercial battery test equipment (e.g., Arbin, Maccor, BioLogic). -Experience with MLOps practices for deploying and monitoring models in production environments. -Fundamental knowledge of electrical circuits, secondary (rechargeable) batteries, or general electrochemistry.

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Benefits

Compensation & Benefits: Expected salary range for this role is from $ 167,500 to $255,500, and a final salary will be determined by the candidate's experience and educational background. QuantumScape also offers an annual bonus and a generous RSU/Equity package as part of its compensation plan. In addition, we do offer a tremendous benefits plan including employee paid health care, Employee Stock Purchase Plan (ESPP), and other benefits.

About Quantumscape

-Began with a mission to reinvent EV batteries using solid-state lithium-metal technology. -Innovative anode-less ceramic separator significantly boosts energy density, safety, and charging speed. -Produced first B-sample QSE-5 cells in late 2024, now undergoing automotive testing. -Unveiled 'Cobra' in 2025—a separator production line designed for gigawatt-hour volume scaling. -Strategic alliance with Volkswagen’s PowerCo for licensed production upon meeting key milestones. -Maintains tight secrecy and high expectations, focusing on anode-free solid-state innovation without a commercial product yet. -Carving a niche at the intersection of Energy, Transport, and Industrial sectors, targeting next-gen mobility infrastructure.

Sector Specialisms