Senior Electronics Engineer – Low-Noise Photonic Detection

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.