Senior Android Application Software Engineer, OrbMini

Job description

**About the Company:** 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. 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. The TFH and World tech stacks make this possible: the Orb verifies real, unique people, World ID proves it privately, and World App puts these capabilities, and more, in people’s hands. Together, they add a human layer to an AI-driven internet. 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. 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. 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. 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. TFH and World have been featured on the cover of [TIME Magazine](https://time.com/7288387/sam-altman-orb-tools-for-humanity/), highlighted in [Fast Company’s](https://www.fastcompany.com/91411606/fintech-blockchain-next-big-things-in-tech-2025) Next 5 in Fintech, and explored in a [Bloomberg deep dive](https://www.bloomberg.com/news/features/2024-08-12/how-worldcoin-is-building-digital-ids-to-combat-the-ai-apocalypse). [The New York Times](https://www.nytimes.com/2025/05/03/technology/world-eye-scanning-crypto-orbs-launch-in-us.html), [Bankless](https://www.youtube.com/watch?v=KUcjtFOHgNc) and [TechCrunch](https://techcrunch.com/2025/04/30/world-partners-with-tinder-visa-to-bring-its-id-verifying-tech-to-more-places/) have all recognized our collective progress in identity, cryptography, AI, and global-scale hardware deployment. Our leadership is also named to the [Time AI 100](https://time.com/collections/time100-ai-2025/). Learn more about the newest product launches from our [Liftoff](https://world.org/liftoff) event. **Location:** San Francisco, USA **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 Application Development Engineer to join as one of our first application focus software engineers at our new San Francisco office. This is a great opportunity to join a newly formed, dynamic team as a Senior Application Development Engineer, and contribute to the development of our next generation proof of human devices. **Key Responsibilities:** - Own the architecture, development, maintenance, and debugging of software applications on upcoming consumer electronics devices - Design and implement high performance user facing applications - Create the user interfaces and user experience of core applications running on our internally developed devices - Participate in design reviews and provide input over all system architecture - Work collaboratively with cross-functional teams on concept integration into product roadmap with a focus on stability, power, and performance - Author and maintain documentation for application 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 - Support user research studies for development of user interfaces **About You:** - Bachelor’s or Master’s degree in Computer Science or a related field - 4+ years of hands-on experience in Android application development - 6+ years of software development experience - Experience developing user interfaces for consumer electronics systems at large scale - Strong proficiency in Kotlin - In depth knowledge of the Android SDK - Experience with testing methodologies including unit testing and UI testing - Ability to work independently on complex projects and take full ownership of deliverables - Ability to debug complex cross-domain issues 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 --- *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. In addition, TFH offers a wide range of best in class, comprehensive and inclusive employee benefits for this role including healthcare, dental, vision, 401(k) plan and match, life insurance, flexible time off, commuter benefits, professional development stipend and much more!* *By submitting your application, you consent to the processing and internal sharing of your CV within the company, in compliance with the GDPR*