Staff Software Engineer - AI/ML Platform

Posted 29 Days Ago
Be an Early Applicant
Redwood City, CA, USA
In-Office
190K-238K Annually
Expert/Leader
eCommerce • Fashion • Retail • Sports
The Role
Own the architecture and hands-on development of Fanatics’ enterprise AI/ML platform, including the LLM gateway, agent and MCP runtime, retrieval infrastructure, evaluation systems, governance, and cost analytics. Set technical standards, make build-versus-buy decisions, deliver scalable platform capabilities, improve observability and security, mentor engineers, and communicate architectural trade-offs to senior leadership.
Summary Generated by Built In

Fanatics Commerce is the global leader in licensed sports merchandise, operating a vertically integrated platform that designs, manufactures, and delivers officially licensed apparel, jerseys, headwear, and collectibles for major leagues, teams, and events worldwide. With more than 900 e-commerce sites and a global omnichannel presence across digital, in-venue, and retail, Fanatics Commerce reaches fans in over 180 countries and powers official fan experiences for many of the world's most iconic sports properties.

At Fanatics, we bring our BOLD Leadership Principles to life every day - building championship teams, obsessing over fans, acting with entrepreneurial speed, and delivering with a determined and relentless mindset.

About the team
The AI/ML Platform pod builds Fanatics' internal AI platform: the paved road for every team building with LLMs, MCPs, and agents. Gateway, agent runtime, registry, retrieval, evaluation,
and cost analytics, all running on a petabyte-scale lakehouse with enterprise-grade governance.  You'll join a pod that owns this platform end to end. This is a Staff-level role, and a hands-on
one. You will choose the architecture, define the standards other teams build to, and stay in the code, shipping the hardest parts yourself. The decisions you make are ones the organization
lives with for years.

Responsibilities
• Own the end-to-end architecture of the AI control plane: gateway, agent runtime, registry, retrieval, evaluation, and cost. Set technical direction, sequence the roadmap, and make the build-versus-buy calls.
• Build the enterprise LLM gateway: multi-provider routing, failover, caching, rate limiting, token optimization, and key management, with a path to self-hosted open-weight models where cost, latency, or data residency call for it.
• Build the Agent/MCP ecosystem on a managed runtime such as AWS BedrockAgentCore: enterprise systems exposed as governed tools over MCP, a control-plane registry for discovery, ownership, versioning, and lifecycle, and a no-code path from prototype to governed production agent, surfaced through a company-wide chat portal.
• Own the unified retrieval layer and the data platform behind it: the governed front door plus the ingestion, chunking, embedding, and indexing pipelines and the vector and search backends that feed it, kept reproducible, observable, and quality-gated at petabyte scale.
• Build the evaluation and feedback loop: offline evals, tracing, and regression gates in CI/CD, with production failures and user edits turning into new eval cases and root-cause attribution across prompts, retrieval, tools, and models.
• Own governance and cost: RBAC, agent identity, least-privilege access to enterprise data, audit logging, use-case-level cost attribution, and the enterprise AI tool portfolio, standing up to finance, executive, and EU AI Act scrutiny.
• Raise the bar: set the engineering standards, mentor engineers, and represent the architecture and its trade-offs directly to senior leadership

Qualifications
• 8+ years building production software, including 2+ years on AI/ML platform. Bachelor's or Master's in Computer Science, Engineering, or a related field or equivalent experience.
• Staff-level impact: system design across multiple services, decisions that span teams, and platforms other engineers build on.
• Strong Python and FastAPI, plus one of Java, GoLang, Scala, or TypeScript. Hands-on with Terraform, Kubernetes, Airflow, Postgres, Grafana, and Prometheus, and familiar
enough with the AWS data science toolkit and libraries like PyTorch to partner credibly with data scientists. Chat UI or internal developer portal work is welcome.
• Hands-on with LLMs and generative AI on Bedrock or Vertex: model routing, RAG, tool calling, structured outputs, and context engineering. Agentic systems and MCP server and client integrations. Agent runtimes such as AWS Bedrock AgentCore matter here, and because they are new we look for depth rather than years. Exposure to self-hosted serving with vLLM, SGLang, or llama.cpp is welcome.
• The data engineering behind retrieval: chunking, embedding, and indexing pipelines, vector or search backends such as OpenSearch, open lakehouse table formats, and a working method for measuring retrieval quality.
• LLM evaluation and observability: eval dataset design, tracing, LLM-as-judge scoring, and regression testing, with tools such as Langfuse or Arize Phoenix.
• Security and governance for AI platforms: RBAC, OAuth2/OIDC, least privilege, cost optimization, and usage metering. Familiarity with governance systems like DataHub and semantic layers, and with administering enterprise AI tools such as ChatGPT Enterprise, Claude Enterprise, or Glean, is welcome.
• Writes clearly and holds the room with executives. Open-source contributions or published work in agentic AI or LLMOps is welcome

The salary range represents base pay only and does not include short-term or long-term incentive compensation. When determining base pay as part of a final compensation package, we consider several factors such as location, experience, qualifications, and training. For information about our benefits, please visit https://benefitsatfanatics.com/

Salary Range
$190,000—$237,500 USD

At Fanatics, we operate with a BOLD mindset - We Build Championship Teams, we’re Obsessed with Fans, we embrace a Limitless Entrepreneurial Spirit, and we approach every challenge with a Determined and Relentless Mindset. If you’re ready to contribute to a dynamic, fast-paced environment that thrives on collaboration and growth, we want you to be part of our team.
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
Fanatics Commerce is a leading designer, manufacturer, and seller of licensed fan gear, jerseys, lifestyle and streetwear products, headwear, and hardgoods. It operates a vertically-integrated platform of digital and physical capabilities for leading sports leagues, teams, colleges, and associations globally – as well as its flagship site, www.fanatics.com.
Fanatics Commerce has a broad range of online, sports venue, and vertical apparel partnerships worldwide, including comprehensive partnerships with leading leagues, teams, colleges, and sports organizations across the world—including the NFL, NBA, MLB, NHL, MLS, Formula 1, and Australian Football League (AFL); the Dallas Cowboys, Golden State Warriors, Paris Saint-Germain, Chelsea FC, and Tokyo Giants; the University of Notre Dame, University of Alabama, and University of Texas; the International Olympic Committee (IOC), England Rugby, and the Union of European Football Associations (UEFA).
At Fanatics Commerce, we infuse our BOLD Leadership Principles in everything we do:
· Build Championship Teams
· Obsessed with Fans
· Limitless Entrepreneurial Spirit
· Determined and Relentless Mindset

By submitting your application, you agree to our terms of service and acknowledge you have read our Candidate Privacy Policy.

Fanatics will never ask candidates for money, banking information, or other sensitive personal information as part of the interview process. If you receive a suspicious message claiming to be from Fanatics recruiting, please do not respond and report it here.

Skills Required

  • 8 to 12 years of production software engineering experience
  • At least 2 years of AI/ML platform experience
  • Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field
  • Staff-level impact, including system design across multiple services and cross-team technical decisions
  • Strong Python and FastAPI experience
  • Experience with at least one of Java, Go, Scala, or TypeScript
  • Hands-on experience with Terraform, Kubernetes, Airflow, Postgres, Grafana, and Prometheus
  • Experience with AWS data science tools and familiarity with PyTorch
  • Hands-on experience with LLMs and generative AI, including model routing, RAG, tool calling, structured outputs, and context engineering
  • Experience with agentic systems and MCP server or client integrations
  • Experience with agent runtimes such as AWS Bedrock AgentCore
  • Experience with chunking, embedding, indexing pipelines, vector or search backends, and retrieval quality measurement
  • Experience designing LLM evaluation datasets, tracing, LLM-as-judge scoring, and regression testing
  • Experience with AI platform security and governance, including RBAC, OAuth2/OIDC, least privilege, cost optimization, and usage metering
  • Clear written communication and ability to present effectively to executives
  • Experience with self-hosted model serving using vLLM, SGLang, or llama.cpp
  • Experience with Langfuse or Arize Phoenix
  • Familiarity with DataHub and semantic layers
  • Experience administering enterprise AI tools such as ChatGPT Enterprise, Claude Enterprise, or Glean
  • Chat UI or internal developer portal experience
  • Open-source contributions or published work in agentic AI or LLMOps

Fanatics Commerce Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Fanatics Commerce and has not been reviewed or approved by Fanatics Commerce.

  • Parental & Family Support — Paid maternity and paternity leave along with fertility coverage, adoption support, and gender-affirmation reimbursement are prominently offered. These programs stand out as a strong aspect for employees planning or supporting families.
  • Healthcare Strength — Multiple health-plan options, wellness resources, life-assistance support, and an employee assistance program are available. The breadth of core medical and support services is repeatedly highlighted.
  • Wellbeing & Lifestyle Benefits — Tuition reimbursement, wellness and fitness programs, merchandise and gym discounts, and employee resource groups are included. Flexible scheduling is also noted, contributing to a broader lifestyle-oriented offering.

Fanatics Commerce Insights

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The Company
HQ: New York, NY
22,000 Employees
Year Founded: 2011

What We Do

Fanatics Commerce is a global sports-commerce business that designs, manufactures, and retails licensed consumer products, including fan gear, jerseys, lifestyle and streetwear products, headwear, and hardgoods. It operates a vertically integrated digital and physical platform for sports leagues, teams, colleges, and associations, and has evolved into a mobile-first, direct-to-consumer brand with manufacturing capabilities serving fans worldwide across global markets.

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