Posted 2 days ago

Electrical Engineer

Shanghai, Shanghai, China 🇨🇳
  • Onsite
  • Full Time

Job description

1. MAJOR RESPONSIBILITIES:

  • Teamwork skills with strong interpersonal communication and responsibility.
  • Design and develop accurate signal conditioning chains, signal converters, sampling system, drivers and so on for high precision measurement instruments.
  • Architect analog front-end (AFE) solutions for sensor interfacing — covering thermocouples, RTDs, strain gauges, photodiodes, electrochemical cells, and other transducers
  • Perform detailed analog signal chain analysis including noise budgeting, bandwidth optimization, dynamic range assessment, and distortion characterization
  • Select and evaluate critical components (op-amps, ADCs, DACs, voltage references, analog switches, multiplexers) based on performance, cost, and supply chain considerations
  • Design and implement high-resolution ADC and DAC subsystems (SAR, Sigma-Delta, pipelined) with careful attention to grounding, shielding, and clock distribution
  • Develop low-noise, low-ripple power supply architectures tailored for sensitive analog circuits with detailed power budget and noise control.
  • Conduct SPICE simulation (LTspice, PSpice, or equivalent) for circuit verification, worst-case analysis, and Monte Carlo tolerance evaluation
  • Design and debug multi-layer PCB layouts with emphasis on analog-digital partitioning, ground plane integrity, thermal management, and EMC compliance
  • Build and characterize prototypes using oscilloscopes, spectrum analyzers, network analyzers, precision multimeters, source-measure units, and thermal chambers
  • Perform design-for-manufacturability (DFM) and design-for-test (DFT) reviews to ensure smooth transition from prototype to volume production
  • Contribute technical documentation including design specifications, test procedures, validation reports, and application notes
  • Participate in cross-functional design reviews and support system-level integration and troubleshooting
  • Stay current with emerging semiconductor technologies, converter architectures, and analog design methodologies relevant to instrumentation

2. REQUIREMENTS:

  • Bachelor’s or Master’s degree in Electrical Engineering, Electronics Engineering, MS EE or above desired.
  • 5+ years of hands-on experience in analog circuit design for measurement, test, or instrumentation applications
  • Strong theoretical foundation in analog electronics — feedback theory, stability analysis, noise theory, and linear circuit design
  • Proven experience designing circuits with precision op-amps (low offset, low noise, low drift), instrumentation amplifiers, and high-resolution ADCs/DACs (≥16-bit)
  • Proficiency in SPICE-based circuit simulation (LTspice, PSpice, TINA-TI, or equivalent)
  • Hands-on PCB layout experience using Cadence HDL, Allegro, or similar EDA tools — with demonstrated ability to design 4+ layer mixed-signal boards
  • Solid understanding of grounding techniques, shielding practices, and electromagnetic compatibility (EMC/EMI) design principles
  • Experience with laboratory instrumentation for circuit characterization — oscilloscopes, spectrum analyzers, precision sources, LCR meters, and thermal test equipment
  • Strong problem-solving skills with a methodical approach to debugging and root-cause analysis
  • Proficiency in English (written and spoken) for documentation and technical communication

3. EXPERIENCE OF INTEREST:

  • Low noise, PPM precision, Op amps, filters, ADC/DAC, amplifiers, loop analysis.
  • Experience with FPGA-based digital signal processing for instrument calibration, linearization, or real-time filtering
  • Knowledge of embedded C/C++ for microcontroller-based data acquisition and instrument control
  • Familiarity with industrial communication protocols (SPI, I²C, RS-485, CAN, Modbus, 4–20 mA)
  • Experience designing circuits that comply with IEC 61010, IEC 61326, or similar safety and EMC standards for laboratory/test equipment
  • Understanding thermal design principles and temperature compensation techniques for precision analog circuits
  • Exposure to data acquisition system (DAQ) architecture design and multi-channel synchronized sampling
  • Experience with design for intrinsic safety (IS) or explosion-proof environments is a plus
  • Track record of published technical articles, patents, or contributions to open-source hardware projects