Software Development Engineer III; Mobile- KMM

Overview

As a Software Development Engineer III – Mobile at Fanatics Betting & Gaming (FBG), you are a senior individual contributor with a strong foundation in iOS development (Swift

UI) and a solid grasp—or growing interest—in Android (Kotlin, Jetpack Compose) and Kotlin Multiplatform Mobile (KMM). You thrive in a fast-paced, product-driven environment where your hands‑on expertise, architectural thinking, and collaborative mindset make an impact. You write scalable, maintainable code, contribute to technical direction, and help level up those around you.

You’ll join the Fanatics Casino team, which owns the full iCasino experience across Fanatics platforms—including our standalone Casino App, iCasino within the Fanatics Sports book & Casino App, and our Casino Desktop website. Our mission is to build the top online casino in the U.S., with an emphasis on fun, dynamic, and entertainment‑first products that resonate with our most valuable customer segment:
Spinners. Our mobile stack is built for speed and scale, powered by modern technologies like Swift

UI, Jetpack Compose, and KMM to deliver high‑quality features quickly and consistently across platforms. We embrace best‑in‑class engineering practices, operational excellence, and cross‑functional collaboration to continuously deliver on our customer promise—and have fun doing it.

• Develop, test, document, and deploy high‑quality mobile software—primarily in iOS (Swift
  
  UI), with growing contributions to Android (Kotlin, Jetpack Compose).
• Deliver key features end‑to‑end, from functional requirements through implementation, testing, release, and iteration.
• Build scalable, maintainable code that aligns with our mobile architecture and long‑term product goals.
• Collaborate closely with product managers, designers, and engineers across platforms to create intuitive, performant user experiences.
• Participate in technical design and architecture discussions, bringing thoughtful opinions and a growth mindset to cross‑platform problem‑solving.
• Contribute to our Kotlin Multiplatform Mobile (KMM) codebase and expand your knowledge of shared business logic as part of our cross‑platform strategy.
• Participate in our on‑call rotation and help resolve production issues with urgency and care for the customer experience.
• Engage in code reviews to uphold quality standards, share knowledge, and promote continuous improvement.
• Improve testability, reliability, and team documentation while identifying and executing on opportunities for refactoring and tech debt reduction.
• Help onboard and mentor junior engineers and interns, contributing to a strong team culture rooted in learning and collaboration.
• Contribute to sprint planning, estimation, and retrospective processes with an eye toward team velocity and continuous improvement.
• Develop a solid understanding of the iCasino product, customer segments, and how we deliver entertainment‑first experiences.
• Be open to occasional travel to Fanatics offices and events for planning, collaboration, and team‑building activities.

• 5+ years of professional mobile development experience, with a strong foundation in iOS (Swift, Swift
  
  UI).
• Exposure to or experience with Android development using Kotlin and Jetpack Compose.
• Willingness and curiosity to learn and contribute to Kotlin Multiplatform Mobile (KMM).
• Solid understanding of mobile architecture, app lifecycle, state management, and UI design principles.
• Demonstrated ability to deliver high‑quality, maintainable code in a collaborative, Agile environment.
• Strong problem‑solving and debugging skills, especially in production environments.
• Clear, thoughtful communicator—comfortable discussing technical trade‑offs with engineers, product managers, and designers.
• Growth mindset with a passion for learning new technologies and improving the customer experience.
• Comfortable working in fast‑paced, evolving environments with shifting priorities and tight feedback loops.

• Experience with Kotlin Multiplatform Mobile (KMM) or other shared code approaches across iOS and Android.
• Familiarity with backend systems, REST APIs, and collaboration with backend…