Senior Software Engineer - Client Service

As a Senior Software Engineer at Fanatics Betting & Gaming (FBG), you will play a senior technical role in building and evolving the client-facing service layers that power our Sportsbook and Casino experiences. These services sit between live sports data, internal platforms, and consumer applications, enabling fast, reliable, and personalized experiences for millions of fans.In this role, you are a highly experienced individual contributor who leads the design and evolution of backend services and APIs from concept through production and long-term operation. You will drive architectural decisions, shape technical direction within the team, and collaborate cross-functionally with mobile engineers, product managers, and platform teams to deliver scalable backend-for-frontend (BFF) services supporting real-time user acquisition and retention experiences.You bring deep expertise in service-oriented and distributed systems and are comfortable leading complex initiatives in ambiguous, high-impact problem spaces. You proactively identify system risks, drive performance and reliability improvements, and raise the bar for engineering quality. We value engineers who demonstrate strong technical leadership, ownership, and a commitment to operational excellence in real-time, high-traffic environments.ResponsibilitiesLead the design and development of consumer-facing backend services powering mobile Sportsbook and Casino experiencesArchitect and own backend-for-frontend (BFF) services that aggregate, transform, and optimize data for mobile clientsDrive API design and service contracts in partnership with mobile engineers and product managersTranslate complex product requirements into scalable, maintainable technical solutionsLead implementation of major backend initiatives from design through production readiness, including testing, observability, and operational planningMake and guide architectural decisions around data flow, service boundaries, resiliency, and performance optimizationImprove system reliability, scalability, and latency for real-time betting and gameplay systemsParticipate in and help evolve the team's on-call practices; lead root cause analysis and long-term reliability improvementsEstablish and promote best practices for observability, logging, metrics, tracing, and alertingProvide technical mentorship to other engineers through code reviews, design reviews, and knowledge sharingContribute to technical roadmaps, quarterly planning, and cross-team architecture discussionsContinuously deepen understanding of the business domain, including sports event hierarchies, betting workflows, and data quality considerationsFoster a high-performing, inclusive engineering cultureBe open to occasional travel to Fanatics offices or industry events for collaboration and team-buildingRequired Qualifications7+ years of professional software development experience, primarily focused on backend or service-oriented systemsStrong programming expertise with significant hands-on experience in Kotlin or JavaProven experience designing, building, and operating scalable backend services and RESTful APIs (ideally using Spring Boot, Spring Web, or similar frameworks)Deep understanding of microservices architecture, distributed systems patterns, and API design principlesExperience leading technical design discussions and making architectural tradeoffsStrong experience with databases (SQL and/or NoSQL), data modeling, caching strategies, and performance tuningDemonstrated ownership of services from design through long-term production supportExperience improving system reliability, scalability, and operational maturity in production environmentsStrong familiarity with monitoring, alerting, CI/CD pipelines, and incident response processesAbility to drive complex technical initiatives with minimal oversightStrong problem-solving skills and ability to reason through ambiguous, high-impact challengesExcellent communication skills with the ability to influence cross-functional stakeholders in a remote-first environmentPreferred QualificationsExperience designing and operating large-scale distributed or event-driven systemsStrong familiarity with Apache Kafka or similar messaging/streaming platformsExperience with Pekko (or Akka), reactive programming models, or asynchronous processingExperience building and scaling backend-for-frontend (BFF) architectures for mobile applicationsExperience in building backend services in KotlinKnowledge of cloud platforms such as GCP or AWS and containerized environments (Docker, Kubernetes)Experience optimizing systems for low latency, high throughput, and real-time data deliveryBackground working with data-intensive services, live feeds, or real-time processing pipelinesExperience mentoring engineers and contributing to technical hiring processesInterest in sports, gaming, or highly interactive consumer productsReady to build the future of sports betting? If you possess some of these qualifications but not all of them, we still encourage you to apply!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: $138,240 - $207,360 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!