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India
Gameplay Programmer – Unreal Engine
- AI
- C++
- OOP
- Prototyping
AI Summary
HLTH is hiring its first in-house Firmware Engineer to develop embedded firmware for next-generation connected wearable health devices, running on tens of thousands of units in the field. The role involves designing and maintaining C-based firmware on Zephyr/nRF Connect SDK, building sensor drivers, optimizing power consumption, and managing secure OTA updates alongside factory and vendor coordination. Candidates must have 4+ years of embedded firmware experience shipping on battery-powered wearables, strong C and ARM Cortex-M expertise, and hands-on Nordic nRF with Zephyr RTOS.
Key Highlights
First in-house Firmware Engineer role at HLTH, a fast-growing Shopify wearable health brand
Full ownership of embedded C firmware on Zephyr/nRF Connect SDK from design through production
Remote collaboration with founders, BLE/biosignal engineers, factories, and external firmware vendors
Must have 4+ years shipping firmware on battery-powered wearables with secure OTA/DFU experience
Fully remote with flexible hours, unlimited PTO, and direct founder access
Key Responsibilities
Design, develop, test, and maintain embedded firmware in C on Zephyr / nRF Connect SDK, owning firmware modules and features from design through production
Develop and integrate drivers for PPG, 6-axis motion (25–100 Hz), and skin temperature sensors
Build reliable sensor acquisition, buffering, and on-device storage pipelines, and hand data cleanly to the Bluetooth layer
Optimize power consumption, memory usage, and overall system performance
Build and maintain secure OTA firmware updates with signed images and rollback
Support firmware bring-up, debugging, validation, and production readiness remotely with factory
Develop robust error handling, watchdog, crash logging, and recovery mechanisms
Participate in firmware architecture, design, and code reviews
Write unit, integration, and hardware-level tests, and develop test tools and automation scripts
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Technical Skills Required
Benefits & Perks
Fully remote, flexible hours
Unlimited PTO (with a required recharge time)
Access to custom AI tooling and workflows
Flat team, direct access to founders
Competitive regional salaries
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Nice to Have
Experience with Goodix or similar PPG sensor front ends and high-rate sensor data acquisition
Working knowledge of BLE profiles and wearable communication architectures
Experience building test tools and automated testing for firmware releases
Python scripting for firmware test tools, plus exposure to firmware CI/CD pipelines and long-duration stress testing
Ability to work independently and drive feature ownership with a product-oriented focus
Job Description
About HLTH
HLTH is one of the fastest growing brands of 2026, reaching the top 0.1% in hyper-growth of all stores in the Shopify ecosystem and we're just getting started (literally). At HLTH we believe understanding your health should be effortless. Our products turn health monitoring into clear insights anyone can act on.
The Role
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