Senior HW Engineer – PCB Analog Design

Lumai

. Design board-level analog and mixed-signal circuits, including photodiode front ends, TIAs, ADC/DAC driver and reconstruction stages, laser drivers, modulator drivers, and bias networks .

Posted 10/8/2026full-timeOxford • United KingdomSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing board-level analog and mixed-signal circuits, with a strong focus on low-noise power delivery, circuit simulation, and characterization. Proficient in collaborating with cross-functional teams to translate system requirements into effective analog solutions.

Highest-signal resume keywords

Analog Circuit DesignSPICE Circuit SimulationLow-Noise Power Supply DesignTIAs Design ExperienceMentoring in Analog Design

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Analog FundamentalsOp-Amp DesignFeedback and Stability AnalysisNoise AnalysisPrecision Circuit DesignDriver DesignAnti-Aliasing FilteringMixed-Signal PartitioningSchematic CaptureLayout Constraints Writing

Soft Skills

CollaborationMentoring

Tools & Technologies

LTspiceCadence PSpiceCadence OrCADAllegroAltiumOscilloscopesSpectrum AnalyzersNetwork AnalyzersPrecision Source-Measure Equipment

Industry Keywords

Photonic SystemsOptoelectronic SystemsPhotodetector ReceiversLaser Diode DriversOptical Modulator DriversOptical Transceivers

Tech Stack

Tools & technologies

DAC

About the role

Key responsibilities & impact

Design board-level analog and mixed-signal circuits, including photodiode front ends, TIAs, ADC/DAC driver and reconstruction stages, laser drivers, modulator drivers, and bias networks
Translate photonic system requirements into analog specifications and architectures with photonics and system teams
Design low-noise power delivery for sensitive circuits, including LDO post-regulation, filtering, precision voltage and current references, grounding, and partitioning schemes
Design control loops and precision circuits for photonic components, including TEC and temperature control, laser current control, monitor photodiode readout, and heater drivers
Run SPICE circuit simulation and analysis, including noise, stability, worst-case, and Monte Carlo analysis, and verify performance across corners
Provide placement, routing, and grounding guidance to the layout engineer
Review layouts for analog integrity
Select and qualify analog components through production
Lead laboratory bring-up and characterisation of analog circuits for noise, bandwidth, linearity, stability, and crosstalk
Correlate laboratory results with simulation
Work with the ASIC team on chip-to-board analog interfaces and on-chip versus off-chip analog partitioning
Agree optical requirements, including optical power budgets, bandwidth, noise, and linearity, with photonics and system teams
Characterise at least one full analog subsystem on the bench by month six
Establish layout constraints and test procedures for use by other engineers

Requirements

What you’ll need

A degree in electronic engineering or a related discipline, plus extensive experience designing analog and mixed-signal circuits at board level for products that reached production
Strong analog fundamentals covering op-amp and amplifier design, feedback and stability, noise analysis, filtering, and precision circuit design
Hands-on experience designing TIAs or other low-noise, high-bandwidth amplifier front ends
Experience interfacing high-performance ADCs and DACs, including driver design, anti-aliasing and reconstruction filtering, clocking sensitivity, and reference design
Solid knowledge of low-noise power supply design, grounding, shielding, and mixed-signal partitioning
Strong preference for SPICE-based simulation, including LTspice, Cadence PSpice/Spectre, TINA, or equivalent
Strong preference for schematic capture in Cadence OrCAD/Allegro or Altium
Strong preference for bench characterisation using oscilloscopes, spectrum and network analysers, precision source-measure equipment, and low-noise measurement techniques
Strong preference for writing layout constraints for sensitive analog circuits and critically reviewing layouts
Strong preference for experience with photonic or optoelectronic systems, including photodetector receivers, laser diode drivers, optical modulator drivers, or optical transceivers
Strong preference for mentoring other engineers in analog design practice

Benefits

Comp & perks

Work on a new kind of optical computer
Opportunity to contribute to products moving from first product to volume production
Cross-disciplinary collaboration with optical engineers, machine learning researchers, and hardware and software engineers
Opportunity to learn across disciplines
Work contributing to sustainable AI infrastructure
Significant influence over product, team, and ways of working
Equal opportunity employer
Hiring-process adjustments and support available upon request