Staff Software Engineer, Kotlin Multiplatform Mobile

Overview

As a Staff Engineer (Kotlin, Multiplatform Mobile) at Fanatics, you are a recognized technical leader. You operate at both strategic and hands-on levels—architecting scalable solutions, guiding ambitious projects, and driving innovation across shared mobile codebases. Your solutions set the standard for engineering excellence, and your bold decisions thoughtfully balance immediate business needs with long-term technical vision. Through your leadership, you foster a culture of innovation, excellence, and shared ownership that leaves a lasting impact on your immediate team and the broader mobile organization.

We own the iCasino experience across Fanatics platforms—including the Standalone Casino App, iCasino within our Fanatics Sportsbook & Casino App, and the Casino Desktop website. Each of these applications is powered by Kotlin Multiplatform, and our ambition is to build the top online casinos in the U.S. Our products are fun, dynamic, and entertainment-focused—and they're a blast to work on. Kotlin Multiplatform is central to our strategy, enabling us to deliver high-quality features quickly and consistently across ecosystems. We embrace best-in-class technologies, modern development principles, and platform agility to ensure we deliver on our Customer Promise and continuously innovate in this exciting and fast-paced market.

Responsibilities

• Lead the design, development, testing, documentation, and deployment of high-quality, scalable Kotlin Multiplatform code supporting Android, iOS, and web experiences.
• Drive the end-to-end technical execution of complex features and systems—from ideation and architecture through release, post-launch refinement, and iteration.
• Shape and evolve the shared architecture and platform strategy to deliver performant, reusable business logic across all supported platforms.
• Develop a deep understanding of the iCasino product and industry landscape to influence technical direction, inform strategy, and align with long-term business goals.
• Define, establish, and uphold engineering principles, best practices, and coding standards—particularly within a mobile & multiplatform environment .
• Collaborate closely with product, design, backend, and platform teams to deliver innovative solutions that balance user needs with technical scalability.
• Champion operational excellence, including observability, reliability, testability, and developer documentation, setting the standard for engineering quality.
• Provide technical leadership during incident response, participate in the on-call rotation, and drive resolution of production issues with urgency and ownership.
• Lead and contribute to team planning, sprint execution, design reviews, and architecture discussions, bringing innovative approaches to technical challenges.
• Conduct and elevate code reviews, promote continuous improvement in development workflows, and ensure strong test coverage—especially in shared KMP code.
• Proactively identify and remove technical and organizational roadblocks to maintain momentum across complex, multi-team initiatives.
• Mentor and coach engineers across all levels and platforms, cultivating a strong, inclusive, and growth-minded engineering culture.
• Be open to occasional travel to Fanatics offices or events for planning, collaboration, and team-building activities.

Required Qualifications

• 7+ years of experience building scalable mobile applications, with deep expertise in Kotlin.
• Production experience with Kotlin Multiplatform (KMP), with a clear understanding of its strengths, limitations, and evolving ecosystem.
• Strong knowledge of Android development, including architecture patterns (e.g., MVI), Jetpack Compose, and dependency injection frameworks.
• Experience working across mobile platforms and collaborating closely with iOS engineers and backend services.
• Demonstrated ability to lead technical decisions and drive best practices in a complex, multiplatform environment.
• Excellent communication skills, with the ability to clearly convey complex technical concepts to engineers, stakeholders, and leadership.
• Proven experience in Agile/SCRUM environments, with a track record of driving process improvements and delivering value iteratively.
• Ability to thrive in a fast-paced, high-growth environment with evolving priorities and cross-functional collaboration.
• A team-first mentality, with a willingness to do what it takes to support the team and a passion for continual improvement.

Preferred Qualifications

• Familiarity with Material Design principles, ideally Material 3.
• Experience designing shared client APIs and integrating with backend services.
• Exposure to Swift, Java, or React in production or collaborative settings.
• Passion for platform engineering, developer experience, and cross-platform tooling.
• Strong focus on code reuse, testability, and performance in multiplatform environments.

Not sure if you check every box?

If you're excited about this role, Kotlin Multiplatform, and building best-in-class mobile experiences, we encourage you to apply—even if you don't meet every single qualification. We value passion, curiosity, and a growth mindset, and we believe great engineers come from diverse backgrounds and paths.

Launched in 2021, Fanatics Betting and Gaming is the online and retail sports betting subsidiary of Fanatics Holdings Inc., a global digital sports platform. The Fanatics Sportsbook is available to nearly 93% of the addressable online sports bettor market in the U.S. in the following states: Arizona, Colorado, Connecticut, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Massachusetts, Michigan, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Tennessee, Vermont, Virginia, West Virginia and Wyoming. Fanatics Casino is currently available online in Michigan, New Jersey, Pennsylvania and West Virginia. Fanatics Betting and Gaming operates nineteen retail locations including retail sportsbooks outside of Progressive Field and Nationwide Arena and the only sportsbook inside an NFL stadium at Commanders Field. Fanatics Betting and Gaming is headquartered in New York with offices in Denver and Dublin, Ireland.