Senior Electrical / Hardware Systems Engineer

About FluidLogic At FluidLogic, we're reimagining how humans hydrate. Our Intelligent Hydration systems combine cutting-edge hardware with powerful software to optimize performance, health, and recovery—starting with elite athletes and expanding to everyday adventurers. We believe the future of wellness is precision-driven, personalized, and always evolving—and we're just getting started. About the Role We are seeking a Senior Electrical / Hardware Systems Engineer to lead the design and development of embedded hardware systems from concept through production. This role requires strong system-level thinking and hands-on execution across power, sensing, actuation, and communication systems. You will help define hardware architecture, design critical circuits, lead bring-up and debugging, and support scaling products into manufacturing. This is a role for an engineer who enjoys owning complex systems end-to-end, thrives in fast-moving environments, and is comfortable working across disciplines to bring real products to life. The ideal candidate is comfortable working across power, digital, and mixed-signal domains, and can design, debug, and scale complex embedded systems in a highly collaborative, cross-functional environment. What You'll Do System Architecture & Hardware Development Define and drive system-level hardware architecture, including partitioning across core subsystems and expansion modules Design embedded hardware systems including schematics, component selection, and PCB layout guidance Develop robust power architectures including battery systems, switch-mode power supplies (buck/boost), sequencing, and protection Design and integrate motor drivers and actuator systems, including power delivery and control considerations Contribute to development of scalable platform architectures supporting multiple product variants Hardware Bring-Up & Debugging Lead hardware bring-up, debugging, and validation of prototypes and production hardware Perform root-cause analysis of complex hardware issues across power, sensing, and communication systems Identify and resolve noise coupling issues across mixed-signal systems (power, RF, sensing, and digital domains) Drive EMI/EMC and ESD design and debugging, including grounding strategy, return path control, shielding, and interface protection System Integration Collaborate closely with firmware, mechanical, and product teams to ensure cohesive system integration Support integration of microcontrollers, sensors, wireless modules, and communication interfaces Help identify and mitigate system-level risks across electrical, mechanical, and firmware boundaries Manufacturing & Productization Support transition from prototype to production, including DFM/DFT and production readiness Help define manufacturing test strategies and validation processes Evaluate engineering tradeoffs across cost, performance, reliability, and manufacturability What Success Looks Like in This Role Develop a deep understanding of the system architecture, design constraints, and product requirements Take ownership of key hardware subsystems, driving design improvements and resolving critical technical issues Lead hardware bring-up, debugging, and validation of new prototypes and iterations Identify and reduce system-level risks related to power integrity, EMI, signal integrity, and system integration Contribute to improving hardware reliability, manufacturability, and scalability as the product moves toward production Communicate clearly across engineering disciplines and build strong working relationships with firmware, mechanical, and manufacturing teams What You'll Bring Bachelor’s or Master’s degree in Electrical Engineering or related field 7+ years of experience in hardware design and embedded system development Demonstrated experience bringing hardware products from concept through production Strong experience with mixed-signal embedded systems Experience designing switch-mode power supplies, battery-powered systems, and power distribution Experience with motor drivers, actuators, or other electromechanical systems Strong debugging skills across hardware and system-level issues Proven ability to diagnose and resolve EMI/EMC and ESD issues in complex systems Solid understanding of noise coupling mechanisms, return path control, grounding strategies, and protection design Experience working in cross-functional teams including firmware, mechanical, and manufacturing Preferred Experience with portable or battery-powered systems Experience with wireless systems (BLE, NFC, or similar) Familiarity with manufacturing test development and production scaling Experience designing platform architectures across multiple product variants Experience working in consumer electronics or connected device environments Tools & Technologies ECAD tools such as Altium Designer (or similar) Lab equipment including oscilloscopes, logic analyzers, spectrum analyzers, and power measurement tools Experience debugging embedded systems using MCUs and common communication interfaces (SPI, I2C, UART, etc.) Work Environment This is a full-time position based out of our El Segundo office, following a hybrid schedule. While some remote flexibility is available, we place a strong emphasis on onsite presence for collaboration, team engagement, and hands-on work. What We Offer At FluidLogic, we’re building something exciting—and we want you to be part of it. As a fast-paced startup, we value agility, creativity, and collaboration. Here’s what you can expect when you join our team: Health & Wellness We offer comprehensive medical, dental, and vision insurance to keep you and your loved ones covered. 401(k) Retirement Plan Prepare for the future with our 401(k) plan. While we don’t offer a company match just yet, we’re committed to growing together. Unlimited PTO We trust our team to take time off responsibly. Whether it’s for rest, travel, or personal needs, you’re empowered to recharge when needed. Flexible Work Schedule We offer flexibility in your day-to-day, with a strong emphasis on in-person collaboration. We believe the best ideas happen when we’re together—sharing, building, and solving problems side by side. Company-Provided Equipment You’ll receive a laptop and any essential tools to help you do your best work from day one. Snacks & Refreshments Stay fueled with a variety of onsite snacks and beverages to keep your energy up throughout the day. Startup Energy Be part of a fast-moving, hands-on environment where your contributions make a real impact. We’re growing quickly, and every team member plays a key role in shaping our future. Observed Holidays We observe standard U.S. holidays so you can enjoy time with family and friends.