Electrical Systems Engineer

Zepto Life Technology•Saint Paul, MN

22h•$95,000 - $115,000•Onsite

About The Position

At Zepto Life Technology, Inc. (Zepto), we are dedicated to revolutionizing healthcare through the development of innovative point-of-care molecular diagnostics. Our cutting-edge platform leverages giant magnetoresistance (GMR) technology as a sensitive and scalable detection method to improve the accuracy, speed, and accessibility of disease diagnosis. By integrating breakthroughs in biotech, assay development, engineering, and software, Zepto is shaping the future of molecular diagnostics in diverse settings and empowering more accessible, efficient healthcare innovation. Zepto Life Technology is seeking an experienced and highly motivated Electrical Systems Engineer to lead the design, development, optimization, and lifecycle management of the electronic hardware powering our next-generation molecular diagnostic instrumentation. This individual will serve as the technical owner of Zepto's GMR instrumentation electronics platform and will be responsible for evaluating and improving existing hardware designs, developing production-ready electronics, supporting FDA-regulated product development, and collaborating across multidisciplinary engineering teams. The ideal candidate combines deep expertise in electrical hardware design with hands-on experience developing complex medical devices from prototype through commercialization.

Requirements

Bachelor's degree in Electrical Engineering or closely related engineering discipline.
Minimum five (5) years of professional experience designing electronic hardware.
Demonstrated experience developing analog, digital, and mixed-signal electronic systems.
Experience designing and reviewing multilayer printed circuit boards (PCB).
Strong understanding of electronic component selection, signal integrity, power management, and circuit troubleshooting.
Strong understanding of amplitude modulation (AM) and mixing techniques, including synchronous/lock-in detection, phase-sensitive detection, and signal filtering.
Strong understanding of Wheatstone bridge excitation and differential sensing, including offset, bridge imbalance, common-mode behavior, and instrumentation amplifier design.
Experience with power supply design and noise mitigation, including LDOs, switching regulators, ripple, power supply rejection ratio (PSRR), voltage reference architectures, ground coupling, and power sequencing.
Experience identifying and mitigating conducted and radiated electromagnetic interference (EMI) and susceptibility through source-level, PCB layout, and system-level design techniques.
Demonstrated ability to troubleshoot complex analog and mixed-signal systems using laboratory test equipment, including oscilloscopes, spectrum analyzers, signal generators, and other electronic measurement tools.
Experience performing hardware verification and validation testing.
Experience using laboratory test equipment including oscilloscopes, logic analyzers, and electronic measurement instruments.
Strong technical documentation and engineering communication skills.
Demonstrated ability to independently manage complex engineering projects.

Nice To Haves

Master's degree in Electrical Engineering or related discipline.
Medical device development experience.
Experience supporting FDA-regulated product development.
Experience with molecular diagnostic or life science instrumentation.
Experience developing sensor-based electronic systems.
Familiarity with Giant Magnetoresistance (GMR) sensor technology.
Experience managing external suppliers and contract manufacturers.

Responsibilities

Work under general direction while collaborating with multidisciplinary engineering teams to develop and commercialize Zepto's molecular diagnostic instrumentation.
Serve as the technical owner of the GMR instrumentation electronics platform throughout the product lifecycle.
Evaluate the current hardware architecture and identify technical limitations, risks, and opportunities for improvement.
Design, develop, and optimize analog, digital, and mixed-signal electronic circuits for diagnostic instrumentation.
Lead schematic capture, PCB design reviews, component selection, and hardware architecture decisions.
Redesign existing electronics to improve performance, manufacturability, reliability, scalability, and product maturity.
Develop engineering specifications from product and system requirements.
Collaborate with software engineers to understand and optimize implementation of the GMR signal processing algorithm.
Design and optimize temperature monitoring and control systems for sensitive molecular diagnostic applications.
Improve signal integrity, electrical noise performance, electromagnetic compatibility (EMC), and immunity.
Plan and execute hardware verification, electrical characterization, environmental, thermal, and reliability testing.
Analyze test data, investigate hardware failures, perform root cause analysis, and implement corrective actions.
Develop and maintain engineering documentation including hardware specifications, design documentation, verification reports, and technical records.
Participate in product risk management activities including Design Failure Mode and Effects Analysis (DFMEA), hazard analysis, and risk mitigation.
Support FDA submissions by preparing engineering documentation supporting Design Controls and Design History Files (DHF).
Manage technical relationships with PCB manufacturers, electronic component suppliers, contract manufacturers, and external engineering partners.
Support Design for Manufacturability (DFM), Design for Assembly (DFA), and Design for Test (DFT) initiatives.
Participate in design reviews and contribute to continuous improvement initiatives.
Perform other duties and special projects as assigned.