OC
Senior Electronics Engineer – Low-Noise Photonic Detection
Accepting applicationsOxbridge Clinical · Cambridge, MA
Full-Time Mid_senior CadenceFPGAanalogmixed-signal
Posted
2d ago
Category
Design
Experience
Mid_senior
Country
UK
We are seeking an experienced electronics engineer to design and build ultra‑low‑noise detection systems for extremely faint optical signals, with significant background.
The role involves signal acquisition from photodiodes and related detectors in high-noise environments, requiring deep expertise in analog front-end design, amplification, and noise mitigation.
Optimize signal chains for high signal-to-noise ratio in electrically and optically noisy environments
Design and implement low-noise analog front-end electronics for photodiodes and optical detectors
Develop transimpedance amplifiers (TIA) and other amplification stages for weak-current signals
Build and prototype circuits, including custom PCB design, fabrication, and bring-up
Integrate photonic sensors with electronics and digital readout systems
Perform noise characterization and modeling (shot noise, thermal noise, 1/f noise, etc.)
Design shielding, grounding, and filtering strategies to minimize interference
Core Requirements
Strong experience in analog electronics design, especially low-noise systems
Hands-on expertise with:
Photodiodes (PIN, APD, SPAD preferred)
Transimpedance amplifiers and current-to-voltage conversion
High-gain, low-noise amplification techniques
Deep understanding of:
Noise sources and mitigation strategies
Bandwidth vs. noise tradeoffs
Signal integrity and grounding techniques
Proficiency with circuit simulation tools (LTspice, Cadence, or similar)
Experience designing and debugging mixed-signal systems
Ability to:
Design custom PCBs (Altium, KiCad, etc.)
Assemble and rework boards (including fine-pitch components)
Select components with attention to low-noise performance
Familiarity with lab equipment, oscilloscopes and spectrum analyzers
Builder attitude, not theorist.
Bonus Qualifications:
Experience with single-photon detection systems (SPADs, PMTs, SNSPD interfaces, etc.)
Familiarity with time-correlated single-photon counting (TCSPC) or fast timing electronics
Experience interfacing electronics with FPGA or microcontroller systems (bonus)
Coding of Stm32 firmware.
Hands-on experience with Direct Memory Access (DMA) and high sampling rates.
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The role involves signal acquisition from photodiodes and related detectors in high-noise environments, requiring deep expertise in analog front-end design, amplification, and noise mitigation.
Optimize signal chains for high signal-to-noise ratio in electrically and optically noisy environments
Design and implement low-noise analog front-end electronics for photodiodes and optical detectors
Develop transimpedance amplifiers (TIA) and other amplification stages for weak-current signals
Build and prototype circuits, including custom PCB design, fabrication, and bring-up
Integrate photonic sensors with electronics and digital readout systems
Perform noise characterization and modeling (shot noise, thermal noise, 1/f noise, etc.)
Design shielding, grounding, and filtering strategies to minimize interference
Core Requirements
Strong experience in analog electronics design, especially low-noise systems
Hands-on expertise with:
Photodiodes (PIN, APD, SPAD preferred)
Transimpedance amplifiers and current-to-voltage conversion
High-gain, low-noise amplification techniques
Deep understanding of:
Noise sources and mitigation strategies
Bandwidth vs. noise tradeoffs
Signal integrity and grounding techniques
Proficiency with circuit simulation tools (LTspice, Cadence, or similar)
Experience designing and debugging mixed-signal systems
Ability to:
Design custom PCBs (Altium, KiCad, etc.)
Assemble and rework boards (including fine-pitch components)
Select components with attention to low-noise performance
Familiarity with lab equipment, oscilloscopes and spectrum analyzers
Builder attitude, not theorist.
Bonus Qualifications:
Experience with single-photon detection systems (SPADs, PMTs, SNSPD interfaces, etc.)
Familiarity with time-correlated single-photon counting (TCSPC) or fast timing electronics
Experience interfacing electronics with FPGA or microcontroller systems (bonus)
Coding of Stm32 firmware.
Hands-on experience with Direct Memory Access (DMA) and high sampling rates.
Show more Show less