Software Engineer III Client Kotlin Engineer

Overview 

As a Software Engineer III - Client Kotlin Engineer at FBG, you are a seasoned contributor and technical leader, known for your ability to build scalable, high-impact solutions that drive the business forward. You combine deep hands-on expertise with a strong architectural mindset, delivering results across client systems. You play a key role in shaping the future of our technology stack while mentoring others and setting a high bar for engineering excellence.

Join the Atlas team as a key driver of our growth engineering initiatives. You'll work in a fast-paced, collaborative environment focused on delivering exceptional client experiences and achieving critical business goals. The Atlas team establishes strategic principles that guide our engineers across the client ecosystem and partners closely with client organizations to implement these standards.

Responsibilities

• Design, develop, and maintain high-quality Kotlin SDKs that serve as foundational tools for internal and external developers
• Build platform-level abstractions and APIs that enable scalable application development across multiple products
• Lead architectural decisions for SDK design patterns, ensuring backwards compatibility and seamless integration
• Manage complex Gradle build configurations, publishing workflows, and dependency resolution for SDK distribution
• Collaborate with product teams to understand developer needs and translate requirements into robust SDK features
• Mentor and coach engineers across all levels and platforms, cultivating a strong, inclusive, and growth-minded engineering culture.
• Establish and maintain coding standards and development workflows for the kotlin multiplatform architecture

Required Qualifications

• 5+ years of professional software development experience
• 4+ years of focused Kotlin development experience
• Expert-level knowledge of Kotlin language features, idioms, and best practices
• Deep understanding of Kotlin coroutines & Flows
• Strong experience with reactive programming patterns and asynchronous data processing
• Experience with Ktor framework for building networking solutions and API integrations
• Proficiency in Gradle build systems, including multi-module projects, custom plugins, and dependency management
• Experience with CI/CD pipelines, SDK versioning strategies, and automated release management for mobile applications and libraries
• Excellent communication skills, with the ability to clearly convey complex technical concepts to engineers, stakeholders, and leadership.
• Proven experience in Agile 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

• Experience with Kotlin Multiplatform(KM)
• Platform-level or SDK development experience
• Experience with code generation tools (KSP) and annotation processing
• Exposure to Swift & iOS development frameworks
• 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, Client Kotlin Engineer, 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.

The expected salary range for this role is based on job-related knowledge, skills, and experience. This role is eligible for the Fanatics Betting and Gaming annual bonus program and an equity award. *Salary range is listed in USD; actual salary will vary based on location. *Salary Range: $120,000 - $200,000 per year (actual salary will be determined in part by a successful candidate’s geographic location). In addition to base salary, bonus, and equity, full-time employees are eligible for Medical, Dental, Vision, 401K, paid time off, and other benefits like GymPass, Pet Insurance, Family Care Benefits, and more. We’ll also give you $700 to set up your home office! 

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. 

Launched in 2021, Fanatics Betting and Gaming is the online and retail sports betting subsidiary of Fanatics, a global digital sports platform. The Fanatics Sportsbook is available to 95% of the addressable online sports bettor market in the U.S. Fanatics Casino is currently available online in Michigan, New Jersey, Pennsylvania and West Virginia. Fanatics Betting and Gaming operates twenty-two retail sports betting locations, including the only sportsbook inside an NFL stadium at Northwest Stadium. Fanatics Betting and Gaming is headquartered in New York with offices in Denver, Leeds and Dublin.