Senior Staff Mobile Security Engineer
Tools for Humanity is a technology company building products for humans in the age of AI.
Maintainer signals as of 9/25/2026
About Tools for Humanity
Tools for Humanity develops hardware, software, and services connected to World, described as an open-source real-human network. Its products include the Orb for privacy-focused proof-of-human verification, World App for World ID access, digital asset management, wallet functionality, transactions, and Mini Apps, and World Spaces for verification, community programming, and events. The company serves end users and organizations seeking to integrate World infrastructure into their projects.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
Design, build, and operate security systems for Android and iOS applications, including device attestation, anti-tampering protections, cryptographic biometric protocols, server-side verification infrastructure, threat models, secure development practices, vulnerability management, and mobile security tooling.
Requirements
- 8+ years of hands-on experience in mobile security engineering.
- Deep expertise in Android or iOS.
- Experience designing and operating mobile device attestation systems.
- Experience with mobile application hardening.
- Experience with mobile reverse engineering and offensive security.
- Proficiency in Kotlin, Java, or Swift.
- Experience securing on-device cryptographic operations.
- Understanding of mobile-specific attack vectors.
Responsibilities
- Design and operate mobile device attestation and integrity verification systems across Android and iOS.
- Engineer anti-tampering, anti-hooking, and runtime integrity protections.
- Own the end-to-end mobile hardening strategy.
- Design cryptographic protocols for on-device biometric authentication.
- Build and maintain server-side attestation verification infrastructure.
- Lead threat modeling for mobile-specific attack surfaces.
- Perform mobile code reviews and build automated security checks.
- Mature the mobile vulnerability management process.
- Evaluate and manage mobile security tooling and vendors.
Benefits
- Healthcare
- Dental insurance
- Vision insurance
- 401(k) plan and match
- Life insurance
- Flexible time off
- Commuter benefits
- Professional development stipend
- Long-term incentive package