South 8 Technologies · 5 hours ago
Battery Pack Applications Engineer
San Diego, CA
Full-time
Hybrid
Senior Level
$116K/yr - $165K/yr
5+ years expSouth 8 Technologies is a fast-growing battery company that has developed a groundbreaking new Liquefied Gas Electrolyte chemistry for next-generation lithium batteries. They are seeking a Battery Pack Applications Engineer to support customers in the design, integration, and optimization of battery packs, leveraging both technical knowledge and customer-facing skills.
BatteryClean EnergyElectronicsEnergy
Responsibilities
Lead outreach and engagement with customers to understand their technical requirements, provide design guidance, and provide clear, concise, and accurate explanations of South 8’s battery technologies and solutions
Serve as the primary technical point of contact for customers integrating our cells into their battery packs
Support customer pack design, validation, and troubleshooting, including electrical, thermal, and mechanical considerations
Conduct application-level testing and validation to ensure pack performance and safety with our cells
Collaborate with the internal Engineering, Production, and Commercial teams to align product capabilities with customer needs
Develop and deliver technical documentation, design guidelines, and training for customers
Provide structured feedback to R&D and product teams based on field learnings
Participate in customer meetings, site visits, and design reviews as needed
Contribute to application engineering infrastructure (simulation tools, reference designs, test protocols)
Develop and maintain strong relationships with key customers, acting as a liaison between technical and non-technical stakeholders
Represent South 8 at industry conferences, customer meetings, and other business development events
Support the creation of technical marketing materials, specification sheets, proposals, and customer success stories that highlight South 8’s technology and value proposition
Domestic and international travel to customer and industry locations on an as-needed basis, estimated at 25% travel
Qualification
Required
Bachelor's or Master's degree in Electrical Engineering, Mechanical Engineering, Chemical Engineering, Materials Science, or related field
5+ years of experience in battery pack design, development, and validation (modules and full packs)
Strong understanding of lithium-ion (or next-gen) cell behavior, thermal management, BMS integration, and safety considerations
Hands-on experience building and testing packs, including prototyping and validation
Familiarity with pack standards, safety certifications (UL, UN38.3, etc.), and regulatory requirements
Excellent problem-solving skills and ability to communicate complex technical topics to both technical and non-technical audiences
Preferred
Experience at a startup or in early-stage technology commercialization
Exposure to a variety of applications (EVs, stationary storage, aerospace, defense, etc.)
Experience with customer-facing roles or technical sales support
Knowledge of reliability testing, failure analysis, and qualification protocols
Willingness to deliver epic high-fives
Benefits
Health benefits
401k
Company stock options
Company
South 8 Technologies
South 8 sells LiGas®, a liquefied gas electrolyte for Lithium-ion batteries. LiGas functions in extreme cold while decreasing cost.
11-50 employees
Funding
Current Stage
Early StageTotal Funding
$27.82MKey Investors
Porsche VenturesLockheed Martin VenturesU.S. Army Combat Capabilities Development Command DEVCOM Soldier Center
2025-12-09Series Unknown· $11M
2024-05-21Series Unknown
2023-08-16Series Unknown
Leadership Team
Cyrus Rustomji
Chief Science Officer
Recent News
vcnewsdaily.com
2025-12-12
Washington Technology
2025-12-12
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