World is building a real human network designed to accelerate people in the age of AI. As bots and autonomous agents reshape the internet, people, institutions, and applications need a trusted way to confirm who is a real human while preserving privacy. Our products make this possible: the Orb verifies real people, World ID proves it privately, and World App enables and distributes the new applications made possible by this technology. Together, they form a new layer for AI internet.

We’re one of the fastest-growing networks in tech. More than 17 million people across 160 countries have verified with World ID, and we complete over 350,000 verifications each week. World App is already among the most used wallets globally. Developers are integrating World ID to build safer online experiences and create spaces where real people can participate, earn, and be recognized in ways AI simply can’t replicate.

World was founded in 2019 and launched globally in 2023. We are 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. We’re backed by leading investors, including a16z, Khosla Ventures, Bain Capital Crypto, Blockchain Capital, Variant, Tiger Global, and Coinbase Ventures, as well as prominent operators and founders across fintech and AI.

World has been featured on the cover of TIME Magazine, highlighted in Fast Company’s Next 5 in Fintech, and explored in a Bloomberg deep dive. The New York Times, Bankless and TechCrunch have all recognized our progress in identity, cryptography, AI, and global-scale hardware deployment. Our leadership is also named to the Time AI 100. Learn more about the newest product launches from our Unwrapped event.

About the team

The Device Software team develops the magical experiences that enable the missions of TFH. We are passionate about making great products. We own problems end-to-end and are able to lead cross-functional teams when needed. We love to collaborate but are not afraid to make decisions. We value open communication and are not afraid to fail - we see the value in learning quickly more than making a perfect decision. We really enjoy working with each other and only bring on the best talent.

About the role

We are looking for a Senior Embedded Software Engineer, Test to own hardware components of our automated and manual test platforms in Device Software. This role identifies, defines and builds hardware systems needed to automate user behavior in a test environment. This role operates alongside but independently from product development teams, with clear accountability for release readiness, test coverage, and test fleet health.

You will design, build, and operate a scalable automated test infrastructure spanning devices and hardware-in-the-loop (HIL) systems. Your work will directly enable faster development cycles, higher release confidence, and fewer issues reaching the field.

You will write and review test code, design physical test architectures, interact directly with hardware to help set the quality bar for multiple device product lines. Over time, this role will define how quality scales as our device portfolio, team size, and system complexity grow.

In this role, you will:

Own hardware designs of HIL testers for Device Software
Design, implement, and evolve a large-scale automated test fleet, including test devices, test stations, and custom HIL systems
Architect and operate test infrastructure spanning:
- Devices (Orb and future products)
- Test stations that interact with devices like a human would
Define quality benchmarks and test strategies in partnership with project leads for new products and features

Investigate and reproduce field issues, acting as first-line triage before handing off to firmware, software, hardware, and backend teams as needed.
Continuously improve test coverage, execution speed, and system reliability, including negative and fault-injection testing

You might thrive in this role if you have:

Vast experience being hands-on with software and hardware, comfortable debugging real devices, test rigs, and electrical signals
Have designed or owned automation hardware systems at scale, including fleets of test devices
Write and review high-quality test code and enjoy building reusable, maintainable test frameworks and libraries
Can read production firmware and software code to understand system behavior and translate that understanding into targeted tests
Are naturally curious and proactive— you dig for bugs, edge cases, and failure modes others miss. A human fuzz tester
Are comfortable setting direction with ambiguity and do not require detailed test instructions to get started
Love to collaborate and operate with low ego, earning trust by delivering value
Think in systems—anticipating future bottlenecks in testing, release processes, and infrastructure before they become problems
Are not afraid to break things in the name of learning, validation, and quality

Pay transparency statement (for CA and NY based roles):

The reasonably estimated salary for this role at TFH in San Francisco ranges from $176,000 - $220,000, plus a competitive long term incentive package, and may include variable compensation. Actual compensation is based on factors such as the candidate's skills, qualifications, and experience. In addition, TFH offers a wide range of best in class, comprehensive and inclusive employee benefits for this role including healthcare, dental, vision and mental health benefits, a 401(k) plan and match, life insurance, flexible time off, commuter benefits, professional development stipend and much more!

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