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Sr. Electrical Engineer

Ironsite
San Francisco, USA
Full-time
Senior Level
Onsite
USD 225000-300000 yearly
Discovered 1 months ago

Full Job Posting

What You'Ll Do

  • Design multi-layer PCBs from concept through DFM, including schematic capture, layout, and signal integrity analysis for high-speed and mixed-signal designs.
  • Own end-to-end electrical architecture for wearable hardware programs, from feasibility through hardware bring-up and production release.
  • Optimize designs for size, power efficiency, thermal performance, and integration density, with the constraints that matter in a wearable running an 8-12 hour shift.
  • Drive component selection, sourcing collaboration with supply chain, and design tradeoffs across cost, performance, and manufacturability.
  • Design and validate power delivery systems, including battery management, charging, protection circuits, and low-power modes.
  • Own the electrical side of battery selection and integration, and partner with mechanical engineering on packaging and thermal design.
  • Build the power architecture that supports continuous recording, encoding, wireless upload, and on-device inference across a full shift without failure.
  • Integrate optical (imaging), audio (where relevant), wireless (BLE, Wi-Fi, LTE), IMU, and environmental sensors into a cohesive hardware platform.
  • Own high-speed interfaces (MIPI CSI, USB, PCIe, and similar) and the signal integrity work that makes them reliable at scale.
  • Partner with firmware engineering on sensor bring-up, driver validation, and system-level tuning.
  • Lead hardware bring-up on new PCB revisions, from first power-on through validated production release.
  • Design and execute characterization and validation test plans across environmental conditions (temperature, humidity, vibration, EMI/EMC).
  • Own manufacturing test coverage, including ICT, functional test, and factory calibration in partnership with manufacturing engineering.
  • Collaborate with mechanical, firmware, manufacturing, and industrial design across the full product lifecycle, from concept through DFM, DFT, and volume production.
  • Represent electrical engineering in design reviews, and drive design decisions that balance electrical, mechanical, firmware, and manufacturing constraints.
  • Support contract manufacturers with technical guidance, design updates, and issue resolution during production ramp.

Technical Challenges You'Ll Solve

  • Fitting more capability into a smaller, lighter wearable. Every new generation of Ironsite hardware needs to be more capable while getting smaller and lighter, because wearability drives adoption. You'll make the density, power, and thermal tradeoffs that let us pack more into less without compromising performance or reliability.
  • Powering continuous capture through a full shift. All-day recording on a single charge requires power engineering discipline at every layer, from component selection through architecture. Every microamp matters, and every electrical decision has power implications that ripple through the product experience.
  • High-speed integration in a small form factor. MIPI CSI for the camera, wireless stacks, high-speed data paths for on-device processing, all in a device that has to be small enough to embed in a hardhat and rugged enough to survive a jobsite. Signal integrity in that context is genuinely hard.
  • Design for real-world reliability. IP67-rated devices operating in dust, moisture, temperature extremes, impact, and vibration for years. Electrical robustness at that level is a discipline, not a feature. You'll design the systems that keep the fleet healthy at scale.
  • Design for volume manufacturing. Every design decision has manufacturability and cost implications that compound at scale. You'll design with production in mind from day one, and partner with manufacturing engineering to drive the DFM iterations that make ramp smooth rather than painful.

What We'Re Looking For

  • 6+ years of hands-on experience shipping electrical designs on production hardware, with at least one full product lifecycle delivered in wearables, cameras, consumer electronics, or ruggedized hardware at real volume.
  • Deep expertise in multi-layer PCB design, schematic capture, and layout for mixed-signal and high-speed designs.
  • Strong experience with power system design, including battery management, charging, protection, and low-power techniques for wearable or portable devices.
  • Hands-on experience integrating optical imaging systems (MIPI CSI or similar), wireless connectivity (BLE, Wi-Fi, LTE), IMU, and environmental sensors into cohesive hardware platforms.
  • Experience with high-speed signal integrity analysis and design for reliable operation at production yields.
  • Comfort reading schematics, datasheets, and using standard hardware lab tools (oscilloscope, logic analyzer, network analyzer, thermal camera, protocol analyzers) to debug hardware and hardware-software integration issues.
  • Systems thinking across the full hardware stack. From silicon and PCB through mechanical integration and firmware, you understand how electrical decisions propagate throughout the product.
  • Experience working directly with contract manufacturers on hardware bring-up, DFM, DFT, and production ramp.
  • A background in Electrical Engineering, Computer Engineering, or a related field, or the equivalent experience.
  • Experience shipping wearable products at consumer volumes (Fitbit, Oura, Whoop, GoPro, Bose, Apple, Meta, Snap, or similar).
  • Experience with camera sensor integration and imaging system design, including selection, integration, and characterization of image sensors.
  • Experience designing for ruggedized industrial or outdoor environments (IP-rated devices, temperature extremes, EMI/EMC compliance).
  • Experience with battery cell selection, custom battery pack design, and battery safety certification.
  • Ability to generate clear and concise technical documentation for internal teams, contract manufacturers, and executive stakeholders.
  • Familiarity with contract manufacturers in Taiwan, mainland China, or Southeast Asia.
  • Experience with FCC, CE, or other regulatory certification processes for wearable or wireless devices.
  • Experience with prior electrical engineering leadership at a hardware startup that scaled from early volumes to full production.
  • Mandarin or Vietnamese language proficiency.
  • Familiarity with mechanical CAD tools (SolidWorks, Fusion 360) for cross-functional collaboration.

What Success Looks Like

  • First 90 days. You know our hardware platform cold, including the electrical architecture, the sensor stack, the power system, and the manufacturing test infrastructure. You've contributed meaningful design improvements to a current or upcoming hardware revision.
  • First 6 months. You've owned a major electrical engineering initiative end to end, whether it's a next-generation hardware bring-up, a power architecture redesign, or a sensor integration that materially improves what our devices can do. Your work is shaping what ships next.
  • First 12 months. You're the internal authority on electrical engineering at Ironsite. Our hardware is more capable, more reliable, and more manufacturable because of you. When we scale from thousands of devices to hundreds of thousands, we do it because the electrical architecture you designed holds up.

• San Francisco Bay Area (on-site)

  • Base salary: $225k-$300k per year, commensurate with experience
  • Significant early-stage equity
  • Full benefits including health, dental, vision, and 401(k) with 6% match
  • Daily catered breakfast and lunch
  • Office in San Francisco, next to Oracle Park and the Caltrain

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