Experienced Battery Cell Engineer – Satellite Power Systems & High-Performance Battery Development

About arenaflex

At arenaflex, we are on a bold mission to connect the unconnected. Our Project Horizon initiative is driving the development of a revolutionary constellation of Low Earth Orbit (LEO) satellites that will deliver high-speed, low-latency broadband connectivity to communities around the world that have been traditionally underserved or completely unserved by existing infrastructure. This is more than just a technological endeavor—it's a chance to make a meaningful impact on billions of lives by bridging the digital divide.

Our team is composed of world-class engineers, scientists, and innovators who thrive on tackling complex challenges that have never been solved before. We believe in pushing the boundaries of what is possible, and we are committed to creating an inclusive, collaborative environment where every team member has the opportunity to grow, learn, and contribute to something truly extraordinary. If you are passionate about advancing space technology, renewable energy solutions, and making a lasting difference in global connectivity, arenaflex is the place for you.

Position Overview

We are seeking a highly skilled and motivated Battery Cell Engineer to join our Power Systems team as part of the Project Horizon initiative. In this critical role, you will be responsible for testing, qualifying, and advancing battery cell technologies that will power the next generation of our LEO satellite constellations. Your expertise in battery testing and characterization will be essential in ensuring the success, reliability, and performance of our cutting-edge lithium-ion battery designs.

This is a unique opportunity to work at the forefront of space technology innovation, where your contributions will directly impact the viability and performance of satellite systems that will serve millions of people worldwide. You will collaborate with multidisciplinary teams across the organization, working alongside experts in electrical engineering, materials science, thermal management, and systems integration.

Key Responsibilities

As a Battery Cell Engineer at arenaflex, you will play a pivotal role in the development and qualification of battery cells for our satellite platforms. Your daily activities will include:

• Collaborating with cross-functional teams to define and establish advanced battery cell performance requirements for current and future satellite power systems


• Designing and executing comprehensive test plans to evaluate, validate, and qualify new lithium-ion cells for space applications, ensuring they meet stringent reliability and performance standards


• Developing analytical models using limited test data and generating actionable insights to inform design decisions


• Operating and maintaining battery cyclers (including systems such as Arbin, Netware, and similar equipment) and configuring test parameters for various lithium-ion cell evaluations


• Analyzing test data to extract meaningful information about lithium-ion cell behavior, performance degradation, and failure mechanisms, then communicating findings effectively to stakeholders across the organization


• Maintaining comprehensive documentation of test procedures, results, and technical insights in accordance with aerospace industry standards


• Ensuring strict adherence to safety protocols and guidelines throughout all testing and handling procedures for lithium-ion batteries


• Participating in design reviews and providing technical input for battery pack development and integration


• Staying current with emerging battery technologies, testing methodologies, and industry best practices

Required Qualifications

To be successful in this role, you will need:

• A long-term postgraduate degree (Master's or PhD) in Electrical Engineering, Chemistry, Physics, Chemical Engineering, Materials Science, Mechanical Engineering, or a related technical field


• A minimum of 3+ years of hands-on experience in the development and testing of battery cells within an advanced technology or aerospace environment


• Proven experience with battery cycler operation and test setup configuration


• Strong understanding of lithium-ion battery chemistry, cell degradation mechanisms, and failure analysis


• Demonstrated ability to analyze complex datasets and translate findings into actionable recommendations


• Excellent written and verbal communication skills, with the ability to present technical information clearly to diverse audiences


• Strong attention to detail and commitment to maintaining accurate records and documentation


• Ability to work effectively both independently and collaboratively in a team-based environment

Preferred Qualifications

While not required, the following qualifications would be highly valued:

• Advanced degree (PhD) in a relevant engineering or scientific discipline


• Direct experience with various battery testing methodologies including OCV (Open Circuit Voltage), EIS (Electrochemical Impedance Spectroscopy), DCIR (Direct Current Internal Resistance), Hysteresis, dQ/dV analysis, HPPC (Hybrid Pulse Power Characterization), cycle life testing, and calendar life testing


• Experience managing multiple battery cyclers (Arbin, Netware, etc.) and developing comprehensive test protocols


• Proficiency in applying Design of Experiments (DOE) methodologies for optimizing electrochemical performance evaluation


• In-depth knowledge of lithium-ion battery materials, including cathodes, anodes, electrolytes, and separators


• Familiarity with electrochemistry principles and various cell characterization techniques


• Understanding of lithium-ion battery cell and pack requirements (thermal, structural, mechanical, electrical, electrochemical) specifically for space or aerospace applications


• Knowledge of space-grade lithium-ion battery testing standards and qualification processes


• Strong programming skills in data analysis tools such as MATLAB, Python, or similar languages


• Experience with statistical analysis software such as JMP or Minitab


• Background in failure mode and effects analysis (FMEA) for battery systems

Work Environment and Culture

At arenaflex, we believe that innovation thrives in an environment that fosters creativity, collaboration, and personal growth. Our battery design division is a dynamic, team-oriented organization that has been empowered to be innovative and agile. We embrace the entire battery product lifecycle—from initial cell qualification and electrical interconnection to pack-level design, testing, and production scale-up.

We work closely with partner teams to define requirements, execute test campaigns to validate and verify our designs, and smoothly transition from new product introductions into full-rate manufacturing. Our culture values technical excellence, continuous learning, and the courage to tackle problems that have never been solved before.

Located in Redmond, Washington, our facility offers access to the vibrant Pacific Northwest technology ecosystem while providing the resources and support needed to make meaningful contributions to groundbreaking projects. We are committed to maintaining a safe, inclusive workplace where diverse perspectives are welcomed and celebrated.

Compensation and Benefits

We offer a competitive compensation package that reflects the critical nature of this role and the expertise we are seeking. The expected salary range for this position is $24-$34 per hour, commensurate with experience and qualifications. Additionally, arenaflex provides a comprehensive benefits package including:

• Health, dental, and vision insurance coverage


• 401(k) retirement plan with company matching


• Paid time off and holidays


• Professional development and continuing education opportunities


• Stock options or equity participation programs


• Relocation assistance for qualified candidates


• Work-life balance support and flexible scheduling options

Immigration and Eligibility

Consistent with our commitment to compliance with applicable laws and regulations, applicants must be eligible to work in the United States. This position is open to U.S. citizens, U.S. permanent residents (current Green Card holders), or individuals who have been granted refugee or asylum status in the United States.

Career Growth and Development

Joining arenaflex as a Battery Cell Engineer means becoming part of a team that is shaping the future of global connectivity. This role offers exceptional opportunities for professional growth, including:

• Exposure to cutting-edge battery technologies and space-grade systems


• Collaboration with industry-leading experts across multiple disciplines


• Pathways to leadership roles within the power systems division


• Participation in defining the future of satellite power infrastructure


• Continuous learning through internal training programs and conference attendance

Join Our Mission

If you are ready to apply your expertise toward meaningful work that will connect the world and push the boundaries of what is possible, we encourage you to apply for this position. At arenaflex, you will find more than just a job—you will find a community of innovators dedicated to making a difference.

Don't miss this opportunity to be part of something extraordinary. Apply today and help us build the future of global connectivity through innovative satellite technology.

We are an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.