Senior Android Identity & Security Engineer

The Wrap; San Francisco (CA); Hybrid; USD 150,000 - 230,000; Full time

Job summary

Gusto is seeking a skilled Mobile Engineer with 8+ years of mobile experience to join the Identity Engineering team. You will build and scale secure login and authentication experiences for our Android app, integrating biometric methods and passkeys to protect customer data.

You will collaborate with Product, Design, Security, and Infrastructure to deliver scalable solutions, mentor junior engineers, and help shape a security-first mobile platform across Gusto.

Qualifications

• 6+ years in Kotlin Android and 8+ years mobile software engineering.
• Strong knowledge of GraphQL and MVVM patterns.
• Experience with biometric auth and passkey solutions.
• Proven ability to mentor engineers.
• Security-focused mindset with secure coding practices.

Responsibilities

• Architect, build, test, and refine Gusto's Android app and mobile web-views.
• Implement biometric login and passkey solutions to improve security.
• Collaborate with product, design, and security teams to solve problems, prototype, iterate, and launch.
• Mentor junior engineers and champion best practices.
• Ensure privacy and security compliance across mobile products.

Skills

Kotlin Android

Mobile software engineering

GraphQL

MVVM

Biometric authentication

Passkeys (FIDO2/WebAuthn)

Mentorship

Cross-functional collaboration

Communication

Security minded

Tools

BiometricPrompt API

WebAuthn / FIDO2

Android Keystore

Encrypted shared preferences

Job description

Gusto is seeking a skilled Mobile Engineer with 8+ years of mobile experience to join the Identity Engineering team. You will build and scale secure login and authentication experiences for our Android app, integrating biometric methods and passkeys to protect customer data.

You will collaborate with Product, Design, Security, and Infrastructure to deliver scalable solutions, mentor junior engineers, and help shape a security-first mobile platform across Gusto.