Software Engineer

About Gusto

At Gusto, we're on a mission to grow the small business economy. We handle the hard stuff — payroll, health insurance, 401(k)s, and HR — so owners can focus on their craft and their customers. With teams in Denver, San Francisco, and New York, we support more than 500,000 small businesses nationwide and are building a workplace that reflects the people we serve.

All full-time employees receive competitive base pay, benefits, and equity (RSUs) — because everyone who helps build Gusto should share in its success. Offer amounts are determined by role, level, and location. Learn more about our Total Rewards philosophy.

AI is a fundamental part of how work gets done at Gusto. We expect all team members to actively engage with AI tools relevant to their role and grow their fluency as the technology evolves. AI experience requirements vary by role and will be assessed during the interview process.

About the Team

The Identity Engineering team is responsible for safeguarding customer accounts by enabling secure login and authentication.

We operate under the principle of "Frictionless Security", ensuring that all Gusto users have seamless yet secure access to their designated entities.

At our core, Login and Authentication are our products, but Secured Login and Authentication is our business. Our focus is not just on enabling access but on delivering a security-first experience that protects every customer interaction.

About the Role

We're looking for a talented and motivated Mobile Engineer with 8+ years of experience to join our Identity Engineering team. In this role, you'll play a key part in developing seamless and secure login and authentication experiences that protect our customers' most sensitive data. You'll build and scale secure, frictionless authentication solutions, own and enhance shared services that power Identity across Gusto's platform, and stay ahead of best practices, tooling, and advancements in Identity security. Collaboration is key—you'll work closely with teams across Payroll, Benefits, HR, Security, System Design, and Infrastructure to deliver scalable, high-impact solutions. If you're passionate about building elegant, scalable solutions and strengthening a high-performing mobile team, we'd love to have you on board!

Here's what you'll do day-to-day:

Architect, build, test, and refine Gusto's native Android app and supporting mobile web-views

Build, iterate, and refine experiences that allow users to successfully and easily access key product features and offerings

Integrate biometric authentication methods (fingerprint, face unlock) and passkey functionalities to enhance user login security and improve user experience

Implement and maintain secure coding practices to protect user data and ensure compliance with privacy regulations

Collaborate with our product management, design, and other partner teams to understand technical and customer pain points, come up with solutions, and then prototype, iterate, and launch

Mentor other junior engineers

Build a product that our customers genuinely love. Don't just take our word for it - check out what some customers have to say.

Here's what we're looking for:

At least 6 years of experience in Kotlin Android development and a minimum of 8 years in mobile software engineering

Strong knowledge of GraphQL

Self-driven mindset, and the ability to work on green field projects

Working knowledge of MVVM

Experience with Android testing frameworks and best practices

Experience implementing biometric authentication (BiometricPrompt API) and passkey solutions (FIDO2/WebAuthn) in mobile applications

Experience in constructing platform and common components to enhance scalability, consistency, and maintainability throughout the product development lifecycle

Strong critical thinking skills, and a keen attention to detail

Strong communication and cross-functional partnership skills

Commitment to continuous learning and mentorship

Bonus Points:

Previous knowledge of the Android security model, including the Android Keystore system, encrypted shared preferences, and secure networking practices

Previous experience in a security-focused role or with security-related projects is a plus

Ability to deliver high-quality code across a diverse tech stack

Familiarity with analytics and monitoring tools

Familiarity with mobile infrastructure such as CI/CD, automated test environments, build & release systems, etc.

Comfortable dealing with ambiguity, setting milestones and deliverables for the team

Learn more about the team:

How We Built a Service-Driven Team

Our Diversity Goals and Efforts

Our cash compensation amount for this role is targeted at $197,000 - $247,000 for San Francisco, Seattle & New York and $163,000 - $204,000 for Denver. Final offer amounts are determined by multiple factors including candidate experience and expertise and may vary from the amounts listed above.

Gusto has physical office spaces in Denver, San Francisco, and New York City. Employees who are based in those locations will be expected to work from the office on designated days approximately 2-3 days per week (or more depending on role). The same office expectations apply to all Symmetry roles, Gusto's subsidiary, whose physical office is in Scottsdale.

Note: The San Francisco office expectations encompass both the San Francisco and San Jose metro areas.

When approved to work from a location other than a Gusto office, a secure, reliable, and consistent internet connection is required. This includes non-office days for hybrid employees.

Our customers come from all walks of life and so do we. We hire great people from a wide variety of backgrounds, not just because it's the right thing to do, but because it makes our company stronger. If you share our values and our enthusiasm for small businesses, you will find a home at Gusto.

Gusto takes security and protection of your personal information very seriously. Please review our Fraudulent Activity Disclaimer.

Personal information collected and processed as part of your Gusto application will be subject to Gusto's Applicant Privacy Notice.