Senior Electrical Engineer - Pleasanton, CA

About the role

Calyxo is seeking a highly skilled and innovative electrical engineer to help develop electronic subsystems in kidney stone treatment. This role focuses on the design of PCBAs, cable harnesses, and prototype embedded software for integration of sensing, controls, and communication subsystems into safe and reliable products.

Responsibilities

• Translate system-level requirements into schematics, PCBAs, cable assemblies, and interface definitions.
• Define electrical architectures including power distribution, sensing, actuation, safety interlocks, and diagnostics.
• Design low-noise analog, mixed-signal, high-speed and power electronics PCBAs for sensors, actuators, control and communication electronics.
• Specify and design custom cable harnesses (signal, power, shielding, grounding) suitable for medical environments.
• Ensure EMI/EMC robustness and compliance with applicable medical standards (e.g., IEC 60601-1-2).
• Select sensor, actuator, power electronics, and protection components for controls systems with attention to accuracy, drift, long-term reliability, environmental exposure (heat, fluids, cleaning agents), component lifecycle, and applicable derating/tolerancing.
• Prototype and debug embedded control algorithms for real-time closed-loop control systems (PID, feedforward, fault detection, control limits).
• Collaborate with firmware/software teams to define hardware/firmware interfaces and control strategies.
• Support bring-up, tuning, and characterization using lab instrumentation and test fixtures.
• Support electrical and system-level verification and validation testing, including IEC 60601-1 and 60601-1-2 compliance testing.
• Contribute to risk analyses (FMEA) with focus on safety-critical failures.
• Support troubleshooting during integration, verification testing, and clinical simulation.
• Provide technical oversight to contract design houses and manufacturing partners, including review of schematics, layouts, design changes, test plans, and documentation, ensuring adherence to design intent, quality expectations, and regulatory requirements.
• Interact with suppliers and internal operations representatives to perform design transfer, root cause investigation, component lifecycle management, and continuous improvement.
• Partner closely with clinical development engineering, product management, quality, regulatory and other cross-functional teams to bring designs to the market.
• Mentor junior and non-specialist engineering talent, promoting a collaborative and high-performance work environment.

Requirements

• Bachelor’s degree in Electrical Engineering. Master’s preferred.
• 8+ years of experience in electronic subsystem design in a regulated product environment; working knowledge of IEC 60601-1, IEC 60601-1-2, and ISO 14971 concepts strongly preferred.
• Analog and mixed-signal circuit design (sensor front-ends, signal conditioning).
• Power electronics and power management (DC-DC, linear regulation, protection).
• PCBA design using modern EDA tools (schematic capture, layout review).
• Altium experience preferred.
• Design of electrical interfaces for closed-loop control system components (sensors, pumps, valves, heaters).
• Exposure to manufacturing, DFM/DFT, and field failure analysis of these interfaces strongly preferred.
• Hands-on prototyping, debugging, and lab test methodologies.
• Understanding of EMI/EMC, grounding, and cabling best practices.
• Experience in embedded systems design and hardware/firmware co-development.
• Proficiency in embedded software development (C/C++) and scripting for hardware automation and data analysis (Python).
• Experience with STM32 applications preferred.
• Prior experience implementing closed-loop control concepts (PID tuning, stability, disturbance rejection), with exposure to sensor calibration, drift management, and fault detection strategies.
• Familiarity with design controls, design reviews, and change management.
• Experience supporting requirements definition, verification testing and risk management.

Qualifications

• Must be self-directed, self-motivated and be able to multi-task in a fast-paced environment with multiple priorities.
• Ability to travel domestically and internationally up to 10% of the time.

Skills

• Strong documentation, presentation, and cross-functional communication skills.

Benefits

At Calyxo, you will be part of a knowledgeable, high-achieving, experienced, and fun team. You will work in a diverse work environment with experienced, proven leaders and have an opportunity to shape our company culture. You will experience constant learning and dynamic challenges to help you grow and be the best version of yourself. We also offer an attractive compensation package, which includes a competitive base salary range of $165,000 - $175,000 and a variable incentive plan. Stock options – ownership and a stake in growing a mission-driven company. Employee benefits package that includes 401(k), healthcare insurance, and paid vacation. Calyxo is deeply committed to fostering an environment where diversity and inclusion are not only valued but also prioritized. We believe a diverse and inclusive community empowers us to act courageously, care deeply, and dream boldly to impact people in big ways.

Pay

$165,000 - $175,000 per year

Schedule

Full-time