Senior Electronics Engineer

Construction, a $2T+ industry, loses hundreds of billions of dollars a year in productivity because no one can see what’s really happening on site. It’s the largest blind spot in physical intelligence.

Ironsite is building the intelligence layer for the physical world. We put wearable cameras on craft workers and use vision-language models to understand how physical work gets done. Our insights show builders where time is lost and what to change, so projects finish faster and crews spend more of their day on skilled work. We’re building the foundation models for physical work, in an industry that has never had ground truth.

The Challenge

Job sites are among the hardest places in the world to build technology. Many start as bare dirt with no power or network, and change every day as the project moves forward. Our devices and network infrastructure are field-tested in extreme weather and harsh conditions, across a fleet scaling to thousands. Every night, 1,000+ hours of footage arrive, and by 5am it’s labeled by our own model, with our in-house experts reviewing anything it’s unsure of. Frontier models that solve research-level math still can’t count the blocks a mason laid over a 10-hour day. Scaled to 100,000 cameras, we’d record more video every day than the world uploads to YouTube.

Where We're Going

No one else has this data. Every day, our cameras record skilled trades doing real work, with 100+ on our largest site alone. Our own model already matches expert human labelers. Now we're building world models that predict what happens on a site tomorrow, and after that, robotics. What you build this week runs on real job sites next week.

The Role

We're hiring a Senior Electronics Engineer to design the electrical architecture of Ironsite's wearable hardware.

This is a critical role on the hardware team. You'll design and validate the PCBs, power systems, and multi-sensor integration that make Ironsite's devices work reliably on active jobsites, on ruggedized wearables operating in some of the harshest environments in American industry. Power efficiency, sensor performance, thermal behavior, and integration density are all electrical engineering problems in this role. If the hardware architecture doesn't hold up, nothing else does.

You'll work directly with mechanical engineering, firmware engineering, manufacturing, and industrial design across the full product lifecycle, from initial concept through volume production. You'll encounter multi-layer PCB design, high-speed signal integrity, power management, and multi-sensor integration for optical, audio, wireless, IMU, and environmental subsystems.

What You'll Do

Electrical architecture and PCB design.

• 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.

Power systems and battery integration.

• 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.

Multi-sensor integration.

• Integrate optical (imaging), audio (where relevant), wireless (BLE, Wi-Fi, LTE), IMU, and environmental sensors into a cohesive hardware platform.
• Design high-speed interfaces (MIPI CSI, USB, PCIe, and similar) and the signal integrity validation that makes them reliable at scale.
• Partner with firmware engineers on sensor bring-up, driver validation, and system-level tuning.

Bring-up, validation, and test.

• 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).
• Support manufacturing testing, including ICT, functional test, and factory calibration in partnership with manufacturing engineers.

Cross-functional partnership.

• 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 and JDMs 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

Required

• 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.

Strongly preferred

• 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.

Nice to have

• Familiarity with contract manufacturers in Taiwan, mainland China, or Southeast Asia.
• FCC, CE, or other regulatory certification for wearable or wireless devices.
• Electrical engineering leadership at a hardware startup that scaled from early volumes to full production.
• Mandarin or Vietnamese proficiency.
• Familiarity with mechanical CAD (SolidWorks, Fusion 360) for cross‑functional collaboration.

What Success Looks Like

• First 90 days. You know our electrical architecture, sensor stack, and power system cold and have improved a current or upcoming hardware revision.
• First 6 months. You've owned a major electrical initiative end to end, like a next‑gen bring‑up, a power architecture redesign, or a new sensor integration.
• First 12 months. You're Ironsite's authority on electrical engineering, and your architecture holds up as we scale to hundreds of thousands of devices.
• Full benefits including health, dental, vision, and 401(k) with 6% match
• Daily catered lunch
• Office next to Oracle Park and the Caltrain

Final compensation is determined by experience, location, and level.

Compensation

Base pay range: $225,000 – $300,000 per year.