Senior Mobile Engineer - Fanatics Markets

Fanatics; New York (NY); On-site; USD 140,000 - 170,000; Full time

Job summary

Fanatics Markets is hiring a Senior Mobile Engineer to own Android features and shared Kotlin Multiplatform code. You’ll ship end‑to‑end capabilities across Android and shared layers from design through deployment.

You’ll apply MVI architecture with Kotlin, Compose, and multi‑module Gradle in a fast‑moving team, collaborating with product, design, and QA to deliver pixel‑accurate experiences. Strong communication and Agile/SCRUM experience are essential.

Qualifications

• 5+ years building scalable Android apps with strong MVI architecture.
• Strong Kotlin proficiency and practical Kotlin Multiplatform experience.
• Experience with Compose or Compose Multiplatform and shared UI.
• Proficiency with Gradle multi-module projects and DI patterns.
• CI/CD pipelines and automated mobile testing best practices.
• Clear communication and agile delivery mindset.

Responsibilities

• Build and ship production features for Android and shared KMP layers.
• Connect Compose Multiplatform UI to shared business logic via MVI.
• Collaborate on a layered architecture with shared platform contracts.
• Integrate with product, design, and QA to deliver reliable experiences.
• Write testable Kotlin, using coroutines, flows, and codegen where appropriate.
• Participate in on-call rotation and code reviews; mentor juniors.

Skills

Android

Kotlin

Kotlin Multiplatform

Compose

Gradle

CI/CD

Testing

MVI architecture

Communication

Agile/SCRUM

Tools

KSP-based codegen

DI (Koin)

Gradle multi-module

CI/CD tooling

Job description

Senior Mobile Engineer - Fanatics Markets

New York, NY, United States

About Us

Fanatics is building a leading global digital sports platform. We ignite the passions of global sports fans and maximize the presence and reach for our hundreds of sports partners globally by offering products and services across Fanatics Commerce, Fanatics Collectibles, and Fanatics Betting & Gaming, allowing sports fans to Buy, Collect, and Bet. Through the Fanatics platform, sports fans can buy licensed fan gear, jerseys, lifestyle and streetwear products, headwear, and hardgoods; collect physical and digital trading cards, sports memorabilia, and other digital assets; and bet as the company builds its Sportsbook and iGaming platform. Fanatics has an established database of over 100 million global sports fans; a global partner network with approximately 900 sports properties, including major national and international professional sports leagues, players associations, teams, colleges, college conferences and retail partners, 2,500 athletes and celebrities, and 200 exclusive athletes; and over 2,000 retail locations, including its Lids retail stores. Our more than 22,000 employees are committed to relentlessly enhancing the fan experience and delighting sports fans globally.

About the Team

Fanatics Markets is the real-money prediction and trading app where you can invest in moments you care about. Built on a secure platform, we let users predict real-world outcomes and trade on events they actually follow — from sports and entertainment to political elections and beyond. Our mission is to redefine how fans engage with the moments and markets that matter most. We're looking for the right people to help us build the future of prediction markets.

Overview

As a Senior Mobile Engineer, you'll contribute to a multi-platform app built on Kotlin Multiplatform, shipping features across Android, iOS, and additional targets from a shared codebase. You'll own complex work end-to-end, write code that sets the quality bar for the team, and help shape architecture decisions in a fast-moving product environment. Our engineering strategy centers on KMP and Compose Multiplatform to deliver high-quality, consistent experiences across platforms — and the engineers who build it are expected to help keep that bar high.

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

Experience and Skills

• 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

Bonus

• Compose Multiplatform experience across Android, iOS, desktop, and wasm targets
• Experience with KSP-based codegen and Koin or similar DI in a KMP environment
• Familiarity with feature flag systems and mobile observability tooling
• Experience with backend services, distributed systems and event-driven architectures

Depending on the role, your interview and onboarding experience may include in‑person components, such as onsite interviews or Launching into Better: LIVE—a multi‑day cultural immersion in New York City for full‑time, non‑seasonal hires. These sessions are designed to build connection and bring our culture to life, though specific travel and participation requirements will be confirmed based on your role and location. Your recruiter will provide clear guidance at each stage of the process.

Ranges will change based on country and state of residence, which are reflected in Geographical Zones defined by Fanatics Betting and Gaming. The range incorporates all of our Geographical Compensation Zones and is subject to change as the Zone associated with the actual offer is confirmed. In addition to the base and bonus, full‑time employment, and more. For information about our benefits, please visit https://benefitsatfanatics.com/

Interested in building your career at Fanatics Betting & Gaming? Get future opportunities sent straight to your email.