Digital Signal Processing Engineer Jobs in Minneapolis, MN

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.

Work under general direction while collaborating with multidisciplinary engineering teams to develop and commercialize Zepto's molecular diagnostic instrumentation, including but not limited to:

• 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.

• 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.

• 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.

• Strong technical leadership and ownership mindset.
• Excellent analytical and problem-solving skills.
• Ability to lead complex engineering projects from concept through commercialization.
• Exceptional troubleshooting and root cause analysis skills.
• Ability to communicate effectively across engineering, quality, regulatory, manufacturing, and executive teams.
• Strong technical writing and documentation skills.

• This position is based in a research and development laboratory and engineering environment where strict adherence to corporate policies, quality systems, and safety procedures is required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.
• The work environment includes laboratory instrumentation, electronic test equipment, prototype assembly areas, and manufacturing support activities.
• The noise level in the work environment is typical for laboratory and engineering environments.
• There is minimal exposure to Blood-borne Pathogens.
• Exposure to Infectious Diseases is mitigated through the proper use of Personal Protective Equipment (PPE).
• Occasional exposure to soldering equipment, electronic components, laboratory chemicals, cleaning agents, and manufacturing equipment may occur.

• Pay Range: $95,000–$115,000 annually. Compensation is based on several factors including education, experience, technical expertise, leadership capabilities, and overall qualifications.
• FLSA Status: Exempt, Monday-Friday 9:00am - 5:30pm (half-hour unpaid lunch), onsite.
• Full-time employees are eligible for benefits including holiday time off, paid time off (PTO), sick time off, health insurance (medical, dental, and vision), health savings account (HSA), 401(k), and life insurance.
• Some traveling may be required.

Zepto Life Technology participates in the U.S. Department of Homeland Security E-Verify program in all facilities located in the United States and certain U.S. territories. The E-Verify program is an Internet-based employment eligibility verification system operated by the U.S. Citizenship and Immigration Services. Learn more about the E-Verify program.

This job description is intended to provide a general overview of the duties and responsibilities of the position. It is not exhaustive and does not include every task that may be required. Duties and responsibilities may change over time, and additional tasks may be assigned as needed. Zepto reserves the right to add, remove, or modify duties at the discretion of the company or its managers.

At Zepto Life Technology, we value direct connections with our candidates. We do not accept resumes from external staffing agencies or independent recruiters for any of our openings unless there is a signed agreement with HR for the specific position. Please note that Zepto Life Technology will not pay fees for unsolicited submissions.