Lead Hardware Engineer

X4 Technology is looking for a Lead Hardware Engineer

Job description

We’re partnering with a next-generation wearables startup based in London that’s redefining how technology integrates with clothing.


The company specialises in subtle, lightweight wearables — technology so seamlessly embedded you wouldn’t know it’s there. With a successful product already in the market, they’re now entering their second iteration of hardware and embedded systems as they scale.


They’re looking to hire a full-time Lead Hardware Engineer, with a clear pathway to CTO within 12 months for the right individual.


The Role

  • Lead hardware development across wearable and sensor-based products
  • Own embedded electronics, PCB design, and firmware development
  • Integrate sensors for wearable applications
  • Support regulatory and certification processes


Technical Environment

  • Embedded systems: ESP (current), moving toward Rockwell chips
  • PCB tools: Altium Designer, EasyPC
  • Wireless: Bluetooth Classic (ESP), Wi-Fi


Team & Setup

  • Small, fast-moving team (8 people)
  • Majority onsite, with on-demand hybrid flexibility
  • London-based office


Compensation & Progression

  • £70k+ base salary + meaningful equity
  • CTO compensation expected to rise closer to £100k (targeting Q4)
  • Significant influence over product and technical direction

Extra information

Status
Open
Education Level
Secondary School
Location
London Area
Type of Contract
Full-time jobs
Published at
05-02-2026
Full UK/EU driving license preferred
No
Car Preferred
No
Must be eligible to work in the EU
No
Cover Letter Required
No
Languages
English

Full-time jobs | Secondary School

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