Senior Software Engineer - Distributed Systems

at Fanaticsfbg

New York, NY, United States, senior, full time, USD 1,52,000–2,00,000 / year, 5+ years

posted 26 May 2026

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Java
Kafka
Redis
Spring Boot
gRPC
Kotlin
Protobuf
WebSocket
REST
Terraform
Postgres
Redis PubSub
Helm
AWS
Kubernetes

About the role

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.

Fanatics Markets is the real-money prediction and trading app where you can invest in moments you care about. Built on a secure platform, we let users predict real-world outcomes and trade on events they actually follow - from sports and entertainment to political elections and beyond. Our mission is to redefine how fans engage with the moments and markets that matter most. We're looking for the right people to help us build the future of prediction markets.

The Opportunity

As a Sr Software Engineer on our Distributed Systems team, you'll be at the core of what makes Fanatics Markets work — the event-driven infrastructure that powers real-money trading at scale. This is a role for an engineer who moves fluidly between hands-on coding and architectural influence: someone who can design a system that handles massive traffic spikes during live events, then roll up their sleeves and build it.

You'll work alongside some of the most experienced distributed systems engineers in the industry, owning meaningful technical decisions and directly shaping how the platform scales over the next several years. If you thrive at the intersection of high-throughput systems, low-latency design, and technical leadership — this is your seat

What you would do

- Design, build, and scale distributed systems using Kotlin, Java, and Spring Boot, architecting for the traffic spikes and concurrency demands of a live real-money trading platform.

- Own the development and optimization of high-throughput event pipelines using Kafka, including partition strategy, consumer group design, and exactly-once processing guarantees.

- Build and tune low-latency data layers across Postgres, Redis, and Redis PubSub — ensuring data integrity, cache coherence, and sub-millisecond read paths under peak load.

Read from job-boards.greenhouse.io, last seen 3d ago.

What they are looking for

- 5+ years of software engineering experience with a primary focus on distributed systems and high-concurrency production environments.

- Expert-level proficiency in Java or Kotlin and Spring Boot, with a strong command of modern API design — REST, gRPC, and Protobuf.

- Deep hands-on experience with Kafka (or Redpanda/Pub Sub) — including internal mechanics, partition strategies, consumer group rebalancing, and delivery guarantees.

- Proven ability to diagnose and resolve bottlenecks in asynchronous messaging systems and implement patterns like idempotency, distributed caching, and exactly-once processing.

- Hands-on experience with Kubernetes, Helm, Terraform, and cloud-native infrastructure on AWS.

- Strong instincts for production reliability — you've been on-call, triaged distributed system failures under pressure, and shipped durable fixes.

- Demonstrated ability to influence technical direction across teams and guide engineers through complex architectural decisions without direct authority.

- Track record of defining success metrics upfront — SLAs, latency budgets, throughput targets — and holding systems accountable to them in production.

- 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.

Depending on the role, your interview and onboarding experience may include in-person components, such as onsite interviews or Launching into Better: LIVE—a multi-day cultural immersion in New York City for full-time, non-seasonal hires. These sessions are designed to build connection and bring our culture to life, though specific travel and participation requirements will be confirmed based on your role and location. Your recruiter will provide clear guidance at each stage of the process.

For information about our benefits, please visit https://benefitsatfanatics.com/

#LI-Remote

#LI-AL1

Ranges will change based on country and state of residence, which are reflected in Geographical Zones defined by Fanatics Betting and Gaming. The range incorporates all of our Geographical Compensation Zones and is subject to change as the Zone associated with the actual offer is confirmed. In addition to the base and bonus, full-time employment, and more. For information about our benefits, please visit https://benefitsatfanatics.com/

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