Job Description

About the Company:

World is a network of real humans, built on privacy-preserving proof-of-human technology, and powered by a globally inclusive financial network that enables the free flow of digital assets for all. It is built to connect, empower, and be owned by everyone.

About the Team:

The Device Organization at Tools for Humanity is responsible for all aspects of driving development of world-class hardware devices reaching billions of people globally. We are a rapidly growing, highly cross-functional team that strategically partners with industrial design, optics, hardware development, and product teams to define product requirements and execute on development of our next generation family of devices. We offer competitive compensation, professional development opportunities, and a collaborative work environment.

About the Role:

Tools for Humanity is looking for a Senior Embedded Systems Engineer to join as one of our first embedded software engineers at our new San Francisco office. This is a great opportunity to join a newly formed, dynamic team as a Senior Embedded Software Engineer, and contribute to the development of our next generation proof of human devices.

Key Responsibilities:

• Own the architecture, development, maintenance, and debugging of embedded firmware for roadmap devices

• Support hardware validation, test coverage improvements, and early design decisions for the hardware team.

• Design and implement low-level drivers and board support packages (BSPs) for microcontrollers, sensors and SoCs.

• Drive hardware/firmware integration and debug issues across electrical and software boundaries.

• Participate in design reviews and provide input on embedded system architectures and testability.

• Work collaboratively with cross-functional teams on concept integration into product roadmap with a focus on stability, power, and performance.

• Evaluate, debug, and validate new hardware designs, leveraging oscilloscopes, logic analyzers, and other lab tools.

• Collaborate with cross-functional teams (mechanical, software, product) to optimize system performance.

• Author and maintain documentation for firmware architecture, testing procedures, and validation results.

• Coordinate with software engineers to validate system-level behavior and address hardware/software integration issues.

• Support production system debug as needed.

• Experience working with Android and AOSP based platforms.

• Supporting overseas development with JDM/ODM partners

• Mentor junior engineers in development best practices.

About You:

• Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, or related field.

• 7+ years of hands-on experience in firmware development for embedded systems, with a strong understanding of electronics and hardware-software interactions.

• Experience developing consumer electronics systems at large scale.

• Proficiency in C/C++ for embedded systems, with experience developing for bare-metal, RTOS, or Linux-based systems.

• Experience with Zephyr RTOS, Linux kernel internals, and real-time system design.

• Familiarity with standard industry tools: oscilloscopes, logic analyzers, JTAG, UART, SPI, I2C, PCIe, etc.

• Strong debugging skills in both hardware and software domains, including use of low-level debuggers and trace tools.

• Hands-on experience with microcontrollers, SoCs, and custom board bring-up.

• Ability to work independently on complex projects and take full ownership of deliverables

• Ability to debug complex cross-domain issues (hardware/software) in a fast-paced, iterative development environment.

• Committed to rigorous documentation and testing practices

• Comfortable working in a start-up or high-velocity team environment, with a proactive, hands-on approach.

Nice-to-Haves:

• Exposure to secure boot, firmware update pipelines, and embedded cybersecurity.

• Background in camera hardware, ISP tuning, or vision sensor integration.

• Experience with Rust

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