Senior Mobile Engineer: Kotlin Multiplatform & Compose

Fanatics Betting & Gaming; Oregon; Hybrid; USD 152,000 - 200,000; Full time

Job summary

Fanatics Betting & Gaming is seeking a Senior Mobile Engineer to drive end‑to‑end Android development from design to deployment. You will work with a shared Kotlin Multiplatform codebase, delivering high‑quality features across Android and other targets using Compose Multiplatform and MVI patterns.

You’ll shape architecture, collaborate with product/design/QA, and contribute to a culture of continuous learning while operating in a fast‑moving, impact‑driven environment.

Qualifications

• 5+ years of experience building scalable, consumer‑facing Android applications with strong command of MVI architecture
• Strong Kotlin proficiency — coroutines, flows, idioms, and best practices — with the ability to apply and share these effectively across the team
• Experience with Kotlin Multiplatform — comfortable developing and scaling shared business logic in a multi‑module KMP codebase
• Hands‑on experience with Compose or Compose Multiplatform, building design‑system‑compliant UI across platform targets
• Proficiency in Gradle multi‑module projects, including convention plugins and dependency management
• Experience with CI/CD pipelines and automated mobile testing practices
• Comfortable working across shared platform and library boundaries — implementing against declared interfaces without leaking platform‑specific logic into shared modules
• Clear communicator able to articulate technical decisions to peers, product, and design stakeholders
• Agile/SCRUM experience with a track record of consistent, quality delivery
• Team‑first mentality with a drive to raise the bar continuously

Responsibilities

• Build and ship production‑quality features across Android and shared KMP layers, taking ownership from design through deployment with minimal oversight
• Implement features across core product domains — connecting Compose Multiplatform UI to shared business logic through clean MVI state management
• Contribute to a layered, multi‑module architecture, respecting module boundaries and shared platform contracts
• Partner with shared platform teams to implement against declared interfaces, keeping app‑specific logic cleanly separated from shared platform concerns
• Collaborate with product, design, and QA to deliver reliable, pixel‑accurate experiences across multiple platform targets
• Write testable, well‑structured Kotlin leveraging coroutines, flows, KSP‑based codegen, and dependency injection patterns consistent with the team's standards
• Conduct thorough code reviews, maintaining module boundary discipline and build system conventions
• Participate in the on‑call rotation, helping diagnose and resolve issues across platforms
• Mentor junior engineers and contribute to a culture of continuous learning on the team

Skills

Android

Kotlin

Kotlin Multiplatform

Compose

Gradle

CI/CD

Testing

Architecture

Agile/SCRUM

Communication

Job description

Fanatics Betting & Gaming is seeking a Senior Mobile Engineer to drive end‑to‑end Android development from design to deployment. You will work with a shared Kotlin Multiplatform codebase, delivering high‑quality features across Android and other targets using Compose Multiplatform and MVI patterns.

You’ll shape architecture, collaborate with product/design/QA, and contribute to a culture of continuous learning while operating in a fast‑moving, impact‑driven environment.