Senior Principal Engineer

About the Team

The FBG Trading Team leads the development of high-performance, low-latency trading platforms tailored for real-time, data-driven decision-making. Our engineers build mission-critical systems where performance, precision, and stability are paramount. We operate at the intersection of advanced software engineering and high-frequency sports betting, leveraging modern .NET architecture, high-throughput data processing, and cutting-edge cloud infrastructure to set industry standards.

Role Overview

We are looking for a hands-on Senior Principal with deep C#/.NET expertise to architect and develop advanced trading platforms and data feed systems. You will be a key technical leader, working on scalable microservice-based systems that power automated pricing engines, real-time trading strategies, and resilient data pipelines. This is a coding-intensive role suited for engineers who enjoy solving complex problems and designing high-performance distributed systems from the ground up.

Key Responsibilities

Architecture & System Design

Architect low-latency, fault-tolerant trading systems using C#, .NET Core, and high-throughput messaging platforms (e.g., Kafka, ZeroMQ).

Design and implement scalable microservices, leveraging cloud-native technologies (AWS or Azure) and containerization (Docker, Kubernetes).

Lead design reviews and build enterprise-grade software adhering to performance, observability, and security best practices. Hands-on Engineering

Write high-performance C# code for trading logic, real-time pricing engines, and data feed handlers.

Build and optimize distributed caching, in-memory databases, and concurrent data structures to support sub-millisecond latency requirements.

Develop and maintain CI/CD pipelines, automated testing frameworks, and system monitoring tools. Innovation & Technical Strategy

Evaluate and integrate new technologies to improve throughput, resilience, and system intelligence.

Contribute to the evolution of our platform through advanced instrumentation, real-time analytics, and rule-based automation. Leadership & Collaboration

Mentor senior engineers and help scale technical decision-making across the organization.

Collaborate with data scientists, quants, and traders to translate strategic goals into scalable, high-performing solutions.

Partner with product managers and business stakeholders to align technical roadmaps with trading objectives. Required Qualifications

Experience

10+ years of software engineering experience with a focus on backend systems and distributed architectures.

Extensive background in designing and building trading systems, automated pricing engines, or high-frequency trading platforms.

Strong hands-on expertise with the C# language, .NET Core, and related ecosystem. Technical Skills

Expert in multithreading, memory management, and high-throughput message processing.

Familiar with real-time systems, sports betting markets, or financial trading platforms.

Proficiency with modern DevOps practices, including IaC (e.g., Terraform), monitoring (e.g., Prometheus/Grafana), and GitOps workflows. Soft Skills

Proven leadership in architecting and delivering critical software in high-pressure environments.

Excellent communicator with the ability to translate complex technical concepts to stakeholders at all levels. Education

Bachelor's or Master's in Computer Science, Engineering, or a closely related field (Ph.D. a plus). Preferred Qualifications

Experience building systems for sports betting, market making, or algorithmic trading.

Contributions to open-source C#/.NET projects or technical speaking at industry events.

Familiarity with compliance and regulatory considerations in financial or gaming tech.

About Us

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.

About the Team

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.