Software Engineer III Java Backend

Overview

As a Senior Software Engineer (SDE III) focused on Backend and Full-Stack development at Fanatics Betting & Gaming (FBG), you are a key contributor to the design and delivery of scalable, high-performance systems that power the iCasino experience across Fanatics platforms. You write clean, maintainable code, contribute to architecture discussions, and help evolve our platform to support rapid iteration and growth. You thrive in a collaborative, cross-functional environment—working closely with engineers across the stack to build reliable backend services, thoughtfully designed APIs, and seamless integrations.

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. These experiences are powered by modern technologies including Kotlin Multiplatform, Spring Boot, Java, and React. Our ambition is to build the top online casino in the U.S.—with products that are fun, dynamic, and entertainment-first. We move fast, embrace modern development principles, and prioritize scalable architecture to continuously deliver on our Customer Promise and stay ahead in this exciting, fast-paced market.

Responsibilities

• Develop, test, and deploy backend software features through high-quality, correct production code using Java, Spring Boot, and AWS.
• Help design and implement scalable, low-latency distributed systems that power engaging iCasino experiences across web and mobile.
• Work closely with internal and external teams to deliver stable, reliable systems aligned with our product roadmap and delivery schedules.
• Collaborate with frontend, mobile, and platform engineers to shape backend services that support seamless, cross-platform user experiences.
• Participate in architecture reviews, technical design discussions, sprint planning, and code reviews.
• Improve and champion engineering best practices related to quality, maintainability, and system performance.
• Contribute to discovery and design efforts for complex technical projects, translating business outcomes into scalable technical solutions.
• Partner with Product, Design, DevOps, and Security to build and deliver features in a highly regulated production environment.
• Participate in on-call rotations, assisting with incident response and ongoing support of production systems.
• Operate according to Agile methodologies, sharing progress and blockers in daily stand-ups and retrospectives.
• Stay curious and open to exploring opportunities across the stack, including frontend tools like React or shared logic via Kotlin Multiplatform.
• Be open to occasional travel to Fanatics offices or industry events for collaboration, planning, or team-building.

Required Qualifications

• 3+ years of backend development experience using Java and Spring Boot in production environments.
• Exposure to frontend development using JavaScript or TypeScript with a modern framework (React preferred).
• Solid understanding of RESTful service design, distributed systems, and database technologies (SQL and/or NoSQL).
• Strong technical skills in a CI/CD environment, with a working knowledge of software design principles related to performance, maintainability, and scalability.
• Demonstrated ability to collaborate with cross-functional teams (Product, Design, Security, DevOps) and external partners to deliver high-quality features.
• Strong debugging, problem-solving, and root cause analysis skills.
• Clear communicator, capable of explaining technical concepts to peers and non-engineers.
• Positive, adaptable, and curious mindset—comfortable working in a fast-paced environment with evolving priorities.
• Experience working in Agile and Scrum development environments.

Preferred Qualifications

• Hands-on experience with AWS cloud services and tools supporting deployment, monitoring, and observability (e.g., Terraform, CI/CD, Datadog, CloudWatch).
• Experience or curiosity in shared business logic using Kotlin Multiplatform (KMP) to support web and mobile.
• Hands-on experience or interest in React as part of a modern full-stack development workflow.
• Exposure to startup or hyper-growth environments, with a pragmatic, iterative approach to building MVPs and delivering customer value.
• Interest in system design and architecture, with an eye for clean APIs, reusable services, and scalable patterns.
• Familiarity with container orchestration (e.g., Docker, Kubernetes) and/or event-driven architectures using tools like Kafka (helpful as we move in this direction).
• Experience supporting production systems, participating in on-call rotations, and improving operational excellence.

We know not every candidate will check every box, and that’s okay. If you’re excited about this role, passionate about backend architecture, curious about full-stack systems, and eager to grow with Kotlin Multiplatform and React—we encourage you to apply. We value potential, a strong technical foundation, and a growth mindset just as much as specific tool experience.

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.