Senior Software Engineer, Accounts - Core

Fanatics is seeking a Senior Software Engineer for its Fanatics Betting and Gaming Accounts team. The role builds and maintains scalable, highly available, compliant Java services supporting the customer account lifecycle, working closely with product, compliance, and operations partners.

Responsibilities:

• Design, build, and maintain Java backend services using Spring Boot or similar frameworks
• Deliver features across registration, KYC, login and MFA, device registration, account management, tax reporting, Fanatics ID integration, and watchlist monitoring
• Build and maintain services that enforce regulatory and responsible gaming requirements, including geolocation, state and self-exclusion, prohibited persons, loss limits, and eligibility
• Build integrations with third-party identity, verification, geolocation, and compliance providers, designing for failure, retries, and data integrity
• Write scalable, well-tested services with strong unit and integration test coverage
• Contribute to architecture and design discussions for APIs, event-driven systems, and data flows
• Troubleshoot complex production issues and take part in the weekly on-call rotation, contributing to runbooks and post-mortems
• Partner with Product, Technical Program Management, Compliance, Support, and client engineering to turn business and regulatory requirements into technical solutions, and take part in sprint planning and agile delivery
• Mentor junior to mid-level engineering teammates through code reviews, design feedback, and pairing
• Follow engineering best practices (CI/CD, testing, observability, feature flagging, documentation) and improve reliability and maintainability by addressing technical debt

Requirements:

• 5+ years of professional software engineering experience with Java
• Strong experience building and supporting production Java backend services with Spring Boot or similar frameworks
• Experience developing REST APIs and integrating distributed systems and data flows
• Experience with event-driven architectures such as Kafka or similar messaging platforms
• Experience working in AWS or other cloud environments
• Experience with relational and NoSQL data stores such as Postgres and MongoDB
• Experience using AI tools or coding assistants to improve engineering productivity
• Strong troubleshooting, ownership, and communication skills, with the ability to work independently and with cross-functional partners
• Experience with identity and account systems (registration, authentication, MFA, OAuth2/OIDC), KYC, fraud, or payments is preferred
• Experience with compliance-driven systems such as geolocation, responsible gaming, or regulatory data handling is preferred
• Experience building highly available, regulated, or enterprise-scale applications is preferred
• Experience with observability tooling (for example Datadog) and operating services on call is a plus