Senior Mobile Platform Engineer, iOS

About Gusto

At Gusto, we're on a mission to grow the small business economy. We handle the hard stuff—like payroll, health insurance, 401(k) s, and HR—so owners can focus on their craft and customers. With teams in Denver, San Francisco, and New York, we’re proud to support more than 400,000 small businesses across the country, and we’re building a workplace that represents and celebrates the customers we serve.

Learn more about our Total Rewards philosophy.

We’re on the lookout for talented Mobile iOS Engineers with 12+ years of experience who are passionate about creating amazing user experiences. In this role, you’ll have the chance to dive into developing features that are not just functional but truly intuitive and enjoyable for our users. We want you to take ownership of scaling our shared services while keeping up with the latest in the iOS world.

You’ll work closely with teams across Product, Identity, Security, System Design, and Infrastructure, collaborating to build solutions that really make a difference. If you’re excited about building elegant, scalable apps and being part of a supportive, innovative mobile team, we’d love to hear from you!

At Gusto, we’re excited to be at a pivotal moment in our journey with over 1M+ monthly active users and the recent launch of our employer experiences on mobile. Our mission is to tackle the real challenges faced by small business owners and their employees, and we believe that mobile is key to delivering impactful solutions. As part of our mobile team, you’ll be at the forefront of this transformation, working alongside talented engineers and designers who are passionate about creating a seamless mobile experience.

Together, we’re building a platform that empowers everyone—small business owners and their teams—to thrive. If you’re ready to make a difference in the mobile landscape at Gusto, we want you on board!

• Architect, build, test, and refine Gusto’s iOS app, along with supporting mobile web views that enhance user experience.
• Develop, iterate, and improve product features that integrate core business functions, work tools, value-added services, and financial products.
• Collaborate closely with our product management, design, and partner teams to identify technical and customer pain points, brainstorm solutions, and then prototype, iterate, and launch those solutions.
• Work cross-functionally with teams in product apps, identity, security, design systems, and infrastructure to deliver world-class experiences right into our customers' hands.
• Build and scale essential services, such as push notification systems and localization features, to enhance app functionality.
• Enhance and maintain our iOS mobile infrastructure, including build pipelines, testing automation, and the release process, to ensure smooth operations.
• Create a product that our customers truly love—don’t just take our word for it; see what our customers have to say.

• A minimum of 8 years of experience in Swift and iOS software engineering, with at least 12 years in mobile software engineering overall. Minimum 4 years of Swift.
• Excellent communication skills and a knack for building strong cross-functional partnerships.
• A self-driven mindset with the ability to tackle greenfield projects and bring innovative ideas to life.
• Proficiency in iOS testing frameworks and a solid understanding of best practices.
• Experience in developing platform components and common features that enhance scalability, consistency, and maintainability throughout the product development lifecycle.
• Strong critical thinking abilities and a keen attention to detail.
• A willingness to learn continuously and a passion for mentoring others on the team.

• Experience delivering high-quality code across a diverse tech stack.
• Experience with analytics and monitoring tools to track app performance / health and user engagement.
• Experience with mobile infrastructure, for example: CI/CD, automated testing environments, and release orchestration.
• Building a strong mobile foundation that feature teams can build on top of.
• Mobile…