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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Hardware Engineer: Prototyping & Integration (Contract) - **Company:** MUUD INC. - **Location:** United States (Remote available) - **Contract:** Permanent contract - **Skills:** 3d Models, 3D Printing, Computer-Aided Design, Application Programming Interfaces (APIs), Autodesk Inventor, Bluetooth, C++ (Programming Language), Communications Protocols, Computer Programming, SolidWorks (CAD), Software Debugging, Firmware, Mobile Application Software, Python (Programming Language), Rapid Prototyping Process, Data Streaming, Systems Integration, Universal Asynchronous Receiver/Transmitter, Wi-Fi Technology, Serial Peripheral Interface, PIC Microcontroller - **Published:** July 5, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=38b350da41a6899e ## About the Role * Proven background in electrical engineering, mechanical engineering, mechatronics, or a hands-on product development equivalent * Strong proficiency with 3D modeling and CAD workflows using SolidWorks, Autodesk Fusion 360, or similar suites * High comfort level with physical workbench fabrication, including precision micro-soldering, circuit troubleshooting, and multimeter use * Practical experience programming embedded systems and microcontrollers using C/C++ or Python * Clear understanding of core hardware communication protocols (I2C, SPI, UART) * Ability to work independently and manage complex R&D milestones within a fast-paced, remote startup environment Preferred Skills & Experience * Direct experience developing wearable consumer tech, biometric sensors, or IoT connected devices * Familiarity with micro-battery optimization or ultra-low-power asset management * Experience collaborating on cross-functional initiatives alongside mobile software developers, product managers, or clinical healthcare professionals * Possession of or easy access to a baseline hardware prototyping/workbench setup ## Description MUUD Health is seeking an adaptive Hardware Engineer: Prototyping & Integration (Contract). This person will own the physical evolution of the MUUD Ring-our dedicated smart ring designed to capture real-time biometric signals and behavioral data for mental fitness tracking. This position operates at the direct intersection of structural product design, mechanical fabrication, and embedded systems software. You will be responsible for translating early-stage functional specs and concept sketches into fully functioning, physical proof-of-concept wearables that sync flawlessly with the developing MUUD App ecosystem. We're looking for a versatile, hands-on "builder" who is comfortable managing the entire lifecycle of an early hardware prototype: from modeling the physical form factor in 3D to wiring components and writing the script-level code that turns raw biometric signals into actionable insight., 3D Modeling & Mechanical Design * Design, iterate, and refine the physical architecture and structural enclosure of the MUUD Ring * Maximize internal layout efficiency to accommodate micro-components (sensors, battery, antenna) while maintaining a comfortable, ergonomic wearable form factor * Prepare, optimize, and manage design files for rapid-prototyping fabrication methods like high-resolution 3D printing or micro-machining Hands-on Hardware Prototyping * Physically assemble low-volume prototype variants of the smart ring, managing component alignment and micro-soldering tasks * Maintain a bench-top testing environment to troubleshoot physical hardware defects, perform power-consumption audits, and manage battery optimization * Source, evaluate, and test modular physical components (biometric sensors, micro-controllers) to find the optimal performance-to-size ratio Firmware & Software Integration * Write and debug script-level firmware to bridge physical sensors with internal microcontrollers * Establish secure peripheral communication channels using standard protocols to manage real-time biometric data streams * Coordinate to ensure physical hardware signals transfer seamlessly via local APIs or Bluetooth/Wi-Fi communication stacks to the MUUD mobile app Cross-Functional Validation * Conduct rigorous device bring-up testing, documenting data accuracy, sensor responsiveness, and system bottlenecks * Work collaboratively to ensure the hardware's data output aligns with the clinical metrics required for MUUD's mental fitness archetypes ## Related Videos - [Prototyping with Hardware and the Web](https://www.wearedevelopers.com/videos/651-prototyping-with-hardware-and-the-web) - [Playing Pong on a shoulder press machine](https://www.wearedevelopers.com/videos/100140-playing-pong-on-a-shoulder-press-machine) - [TresJS a new declarative ThreeJS as Vue components](https://www.wearedevelopers.com/videos/543-tresjs-a-new-declarative-threejs-as-vue-components) - [Building a Cross-Platform BLE Client with Kotlin Multiplatform and Kable](https://www.wearedevelopers.com/videos/100250-building-a-cross-platform-ble-client-with-kotlin-multiplatform-and-kable) - [Agent Smith Gets Hardware: Autonomous IoT Hacking From Debug Port to Cloud API](https://www.wearedevelopers.com/videos/100258-agent-smith-gets-hardware-autonomous-iot-hacking-from-debug-port-to-cloud-api) - [More efficient software for more efficient microchips](https://www.wearedevelopers.com/videos/1164-more-efficient-software-for-more-efficient-microchips) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [6 Emerging Technologies We’ll Learn About in 2025](https://www.wearedevelopers.com/magazine/381-6-emerging-technologies-we-ll-learn-about-in-2025) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Top 6 Hackathons for Developers in 2023](https://www.wearedevelopers.com/magazine/263-top-6-hackathons-for-developers-in-2023)