Tools for Humanity is hiring a Senior Android Framework Engineer in Device — San Francisco. The overview below is synthesized from the employer posting on jobs.ashbyhq.com: factual requirements and scope are preserved, but prose is rewritten with editorial context. Verify details and apply via the employer link.
About the Company
Company context from the listing:
Tools for Humanity (TFH) designs and builds technology behind World. World is building a real human network designed to accelerate people in the age of AI.
World is already running at a global scale. More than 17 million people across 160 countries have verified with World ID, and more new Orb verifications take place each week.
Founded in 2019, TFH has more than 400 people across hardware, software, AI, cryptography, mobile engineering, and global operations. Our teams come from OpenAI, Tesla, SpaceX, Apple, Google, Stripe, Meta, Coinbase, Palantir and MIT Media Lab.
TFH and World have been featured on the cover of TIME Magazine, highlighted in Fast Company’s Next 5 in Fintech, and explored in a Bloomberg deep dive. ⇧JOBLINK:https://www.nytimes.com/2025/05/03/technology/w
About the Team
Company context from the listing:
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.
About the Role
Day-to-day scope for the Senior Android Framework Engineer as described in the posting:
Tools for Humanity is looking for a Senior Software Development Engineer to join as one of our first device software engineers at our new San Francisco office. This is a great opportunity to join a newly formed, dynamic team and contribute to the full stack development of our next generation proof of human devices.
Key Responsibilities
Day-to-day scope for the Senior Android Framework Engineer as described in the posting:
- Design, implement, and maintain embedded Linux and Android system components, including kernel modules, init scripts, and system daemons.
- Develop and extend AOSP and custom HALs and in to support new hardware features and platform services.
- Work to define robust communication interfaces between system components.
- Manage entire software development lifecycle from concept to production with a focus on developing scalable systems
- Serve as an interface between firmware/hardware teams and Android application teams
- Collaborate with cross-functional teams (hardware, software, product) to optimize system performance with a clear understanding of UX and customer needs
- Supporting overseas development with JDM/ODM partners
- Integrate and optimize low-level drivers and middleware for performance, reliability, and power efficiency.
- Mentor junior engineers in development best practices
About You
Company context from the listing:
- Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, or related field
- 7+ years of hands-on experience in software development, with a strong understanding of all levels of the software stack
- Experience working with Android and AOSP based platforms
- Experience developing and maintaining consumer electronics systems at large scale
- Strong proficiency in C/C++/Rust and experience with Linux kernel and user-space programming
- Have shipped high volume mobile Android based devices
- Deep understanding of AOSP internals, HAL framework, and Android system bring-up
- Experience implementing custom HALs and IPC interfaces (Binder, HIDL, AIDL, or similar)
- Experience working with cross-compilation toolchains, device trees, and hardware abstraction layers
- Comfortable working in a start-up or high-velocity team environment, with a proactive, hands-on approach
Nice-to-Haves:
- Familiarity with Yocto, Buildroot, or Android build systems
- Hands-on experience with embedded Linux, BSP development, and system integration
Pay transparency statement (for CA and NY based roles):
The reasonably estimated salary for this role at TFH ranges from $246,500 - $290,000, plus a competitive long term incentive package. Actual compensation is based on factors such as the candidate's skills, qualifications, and experience.
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