Senior Staff Software Engineer, iOS Platform

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 Role

We're on the lookout for talented Mobile iOS Engineers with 12+ years of experience who have the expertise to help guide our mobile efforts. In this role, you'll have the chance to dive into developing the foundation upon which our mobile apps are built. 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!

About the Team

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!

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

• Architect, build, test, and refine Gusto's iOS app, along with supporting embedded mobile web views that enhance user experience.
• Utilize AI agents as a multiplier to deliver high-quality output quickly.
• Identify and advocate for best-practices, architecture and process.
• Enhance and maintain our iOS mobile infrastructure, including build pipelines, testing automation, and the release process, to ensure smooth operations.
• Build and scale essential, foundational services, such as push notification systems, accessibility and localization features, to enhance app functionality.
• 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 in product apps, identity, security, design systems, and infrastructure to identify technical and customer pain points, brainstorm solutions, and then prototype, iterate, and launch those solutions. Create a product that our customers truly love—don't just take our word for it; see what our customers have to say.

Here's what we're looking for:

• A minimum of 10 years of experience in Swift and iOS software engineering, with at least 12 years in mobile software engineering overall.
• 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, performance, 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 in the organization.

Bonus points:

• 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 Testing-at-scale.
• Strong knowledge of GraphQL.
• Experience working at scale on apps that span multiple teams and feature areas.

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 is proud to be an equal opportunity employer. We do not discriminate in hiring or any employment decision based on race, color, religion, national origin, age, sex (including pregnancy, childbirth, or related medical conditions), marital status, ancestry, physical or mental disability, genetic information, veteran status, gender identity or expression, sexual orientation, or other applicable legally protected characteristic. Gusto considers qualified applicants with criminal histories, consistent with applicable federal, state and local law. Gusto is also committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. We want to see our candidates perform to the best of their ability. If you require a medical or religious accommodation at any time throughout your candidate journey, please fill out this form and a member of our team will get in touch with you.

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.

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