Design Engineer, Battery Systems (electrical)

CelLink; San Carlos (CA); On-site; USD 117,000 - 143,000; Full time

Job summary

CelLink is seeking a Design Engineer in San Carlos, California, to lead efforts in transforming high-conductance harness technology into universal solutions. This pivotal role involves designing components that move power and data, with a focus on sectors like aerospace and robotics.

The ideal candidate will have substantial experience in HV battery systems, supporting the company’s expansion into new markets while maintaining strong cross-functional collaboration and innovation.

Qualifications

• 3+ years of experience in HV battery systems or electrification architecture.
• Familiarity with EMC concepts and interpreting electrical test data.
• Experience coordinating with external test labs on electrical validation.

Responsibilities

• Design core components that move power and data through the battery pack.
• Develop battery modules and pack layouts focusing on manufacturability.
• Create detailed CAD models and engineering drawings for interconnects.

Skills

HV battery systems

Electrification architecture

EMC concepts

Cross-functional collaboration

Flexible circuits

Education

Bachelor's degree in Engineering (Materials Science, Physics, Mechanical, or Electrical)

Job description

CelLink is seeking a Design Engineer to spearhead efforts that transform our high-conductance, flexible harness technology into universal solutions across emerging industries. Building on our foundation in automotive and energy storage, this role is pivotal in expanding into new markets such as aerospace, robotics, and data centers—delivering tailored, high-performance products that redefine how power and data move through complex systems.

This is a chance to shape the future of electrification and innovation. You’ll design products that define industries, influence global electrification, and accelerate the transition to smarter, lighter, and more efficient systems.

Essential Duties and Responsibilities

• Design and build the core components that move power and data through the battery pack, including interconnects, current collector assemblies, busbars, voltage sense harnesses, and flexible circuits.
• Develop battery modules and pack layouts with a focus on manufacturability, serviceability, cooling, and system-level integration, making sure everything fits and functions inside the vehicle or enclosure.
• Create and manage detailed CAD models and engineering drawings for interconnects and PCBAs, using GD&T and stack-up analysis to define mechanical and assembly requirements.
• Work hands‑on through the full development cycle, from early prototyping to pilot builds and into production, troubleshooting designs as they evolve.
• Leverage expertise in industries such as aerospace, robotics, data centers, or appliances to identify new applications where CelLink’s flexible circuits can deliver transformative value.
• Collaborate with mechanical, electrical, and manufacturing engineers to design and validate product architectures, ensuring optimal electrical and mechanical performance.
• Conduct and support basic electromagnetic compatibility (EMC) testing—including setting up test infrastructure, specifying test elements, and coordinating measurements in low‑frequency environments.
• Participate in technical discussions with customers and suppliers, helping interpret and communicate EMC and electrical test results in collaboration with subject matter experts.
• Work cross‑functionally with internal teams to define wiring responsibilities—mechanical engineers will typically own wiring layouts and physical integration, while this role focuses on circuit‑level performance and electrical optimization.
• Engage directly with potential customers to understand design requirements, pain points, and performance targets, aligning CelLink’s technology to their product goals.
• Partner with Sales, Marketing, and R&D to develop technical proposals, product roadmaps, and scalable design solutions that meet both customer and market needs.
• Serve as a technical point of contact for customers, managing relationships, facilitating design reviews, and ensuring alignment on requirements, timelines, and deliverables throughout the development process.
• Help lead engineering program management activities, including coordinating with suppliers, managing BOMs, tracking customer milestones, overseeing the design release process, and driving root‑cause investigations when issues arise.

Minimum Qualifications (Knowledge, Skills, and Abilities)

• 3+ years of experience in HV battery systems or electrification architecture is strongly preferred.
• Bachelor’s degree in Engineering (Materials Science, Physics, Mechanical, or Electrical) or equivalent technical experience.
• Familiarity with EMC concepts, inductance and capacitance measurement, and interpreting electrical test data.
• Experience coordinating with external test labs or suppliers on electrical validation and EMC testing.
• Proven ability to work cross‑functionally to balance electrical performance, mechanical packaging, and manufacturability.
• Exposure to flexible circuits, lightweight wiring, or interconnect systems is highly preferred.
• Strong communication skills for translating complex technical results to non‑electrical stakeholders and customers.
• Entrepreneurial mindset with the ability to thrive in a fast‑paced, evolving environment.

Base Salary: $130k+ with final salary determined by experience and level. We’re hiring for multiple positions and will align compensation accordingly.

Working Conditions/Hours

Salaried Exempt

100% onsite

Physical Demands – Office and Manufacturing Environment

While performing the duties of this position, the employee is regularly required to talk or hear. The employee frequently is required to use hands or fingers, handle, or feel objects, tools, or controls. The employee is required to stand; walk; sit; reach with hands and arms pull/push; climb or balance; and stoop, kneel, crouch, or crawl. The employee must lift and/or move up to 50 pounds without assistance. Specific vision abilities required by this position include close vision, distance vision, color vision, peripheral vision, and the ability to adjust focus.

Work Environment

Includes both a typical office environment, with minimal exposure to excessive noise or adverse environmental issues, and a shop environment, with exposure to high noise levels from operating machines, physical hazards from moving equipment and machine parts, nuisance dust, and skin exposure to chemicals used to run/maintain machines.

PPE

May be required to wear Personal Protective Equipment, including but not limited to safety glasses, safety shoes, bump caps, gloves, hair nets, masks, & clean‑room frocks while adhering to the prescribed safety procedures.

We believe diversity and inclusion among our teammates are essential to our success. We celebrate diversity and are committed to creating an inclusive environment for all employees while building teams that represent a variety of backgrounds, perspectives, and skills. We are an equal opportunity employer. All employment is decided based on qualifications, merit, and business needs. CelLink participates in the E‑Verify program in specific locations as required by law.