Staff Software Engineer - Fanatics Markets

The role

You will design, build, and scale distributed systems using Kotlin, Java, and Spring Boot. You will work on event-driven infrastructure to power real-money trading at scale.

What you will do

• Design, build, and scale distributed systems using Kotlin, Java, and Spring Boot
• Own the development and optimization of high-throughput event pipelines using Kafka
• Design and build systems that process high-throughput, low-latency event streams
• Partner with product and engineering leadership to align cross-domain technical decisions
• Diagnose and durably fix production issues in a live trading environment
• Proactively identify performance bottlenecks and technical risk
• Raise engineering standards through design docs, code/architecture reviews, and patterns

Required qualifications

• 7+ years building scalable, fault-tolerant distributed systems in production
• Expert-level proficiency in Java or Kotlin and Spring Boot
• Strong command of modern API design — REST, gRPC, and Protobuf
• Deep hands-on experience with Kafka (or Redpanda/Pub Sub)
• Deep experience with event-driven architecture and async messaging
• Demonstrated end-to-end domain ownership
• Strong performance instincts — latency, throughput, and data pipeline efficiency
• Clear, direct communicator
• High tolerance for ambiguity and speed

Nice to have

• Experience with real-time delivery systems — WebSocket fan-out, server-sent events, or pub/sub at scale
• Familiarity with financial platforms, real-time trading systems, or prediction markets
• Experience in a high-growth startup environment where ownership is broad and the technical landscape evolves quickly
• Familiarity with FIX protocol or exchange connectivity patterns

About the company

Fanatics is building a leading global digital sports platform. Fanatics Betting and Gaming is the online and retail sports betting subsidiary of Fanatics.