Electronics Engineer (Mixed Signal)

About the Role

Our product lives or dies on measurement integrity. The algorithms can only be as honest as the analog front-end, the clocking chain, and the EMI/grounding reality of the bench or deployment.

The Mixed-Signal Electronics Engineer owns the physical layer that makes “deterministic sampling” and “trustworthy spectra” possible: front-end design, ADC interfacing, clock distribution/discipline, and hardening against the real world (EMC, ground loops, switching noise, cable nonsense).

This role is for someone who has shipped mixed-signal systems and knows the difference between “the schematic is correct” and “the measurement holds up in the field.”

What You’ll Do

• ADC front-end design: anti-alias filtering, input protection, impedance matching, gain staging, biasing, dynamic range planning; ensure linearity/low distortion across conditions.
• Clocking architecture: select oscillators and clock trees; manage jitter budgets; design clock distribution/isolation to prevent clock contamination from digital noise.
• Discipline/synchronization (as needed): integrate word-clock, PPS, or PTP/IEEE-1588 strategies; define holdover behavior and monitoring.
• Mixed-signal layout & grounding: own partitioning, return paths, shielding/guarding strategy; design to survive real cable/earth-ground environments.
• EMC/EMI resilience: identify coupling paths (radiated/conducted); apply filtering, chokes, shielding, enclosure strategy; pre-compliance mindset.
• Noise + interference debugging: find sources of hum/spurs/elevated noise floors and propose design changes that solve root causes.
• Hardware validation & acceptance tests: define pass/fail procedures: SNR/THD+N, ENOB, jitter indicators, crosstalk, channel skew, susceptibility testing.
• Collaborate with firmware/systems: ensure timing, buffering, and metadata expose the truth telemetry needed downstream.

Concrete Deliverables

• A front-end + ADC reference design with documented dynamic range, noise budget, anti-alias behavior, and expected spurious profile.
• A clocking/jitter budget with measured validation on prototypes (not just spreadsheet faith).
• A grounding/EMC playbook for bench and field setups (cables, power supplies, enclosures, “do not do this” rules).
• A hardware acceptance test suite (procedures + fixtures if needed) that turns “looks clean” into quantified pass/fail results.

Required Qualifications

• Proven mixed-signal design experience: analog front ends + ADC interfacing + clocking.
• Strong grasp of practical measurement issues: noise sources, distortion mechanisms, impedance/termination, aliasing, sampling realities.
• Experience with PCB layout for mixed-signal systems (or tight collaboration with layout engineers) and an eye for grounding/return paths.
• Ability to debug in the lab using real instruments (scope, spectrum analyzer, signal generator, LA).

Preferred Qualifications

• Experience with precision timing systems: low-jitter clock distribution, word clock, PLL/DPLL discipline, PTP hardware timestamping.
• Familiarity with audio/RF-grade metrics: THD+N, SFDR, IMD, phase noise, Allan deviation (as relevant).
• Experience taking products through EMC pre-compliance and resolving failures without heroic hacks.
• Comfort with environmental constraints (temperature drift, vibration, power quality) and designing monitoring/telemetry to detect them.

How You’ll Be Measured (First 60–90 Days)

• You produce a clear front-end + clocking architecture with quantified budgets and realistic tradeoffs.
• Prototype measurements match expectations: noise floor, spurs, distortion, channel alignment, jitter indicators are within targets.
• You identify and eliminate at least one major real-world failure mode (ground loop hum, switching spur, crosstalk, clock contamination).
• You deliver acceptance tests that prevent regressions and make bench setups reproducible.

Working Style

• You assume the enclosure and cables are part of the circuit.
• You treat “that spur is fine” as debt, not a shrug.
• You like designs that are robust, measurable, and diagnosable—not fragile lab-only demos.

Title & Level

Electronics Engineer (Mixed Signal) (mid-to-senior; can scale to Staff), partnering closely with embedded, systems, and DSP teams.