Software Engineer III (FanApp)

Fanatics Commerce•Redwood City, CA

7d•$146,000 - $180,000•Hybrid

About The Position

Fanatics is looking for a Software Engineer III to join the FanApp team, where you will help build the next-generation shopping experience within a universal FanApp — creating intuitive, high-impact journeys that improve discovery, personalization, engagement, and conversion for sports fans. You will partner closely with product, design, backend, data, and platform teams to deliver reliable, performant, and measurable full-stack experiences end to end, with a focus on search, recommendations, merchandising, promotions, and product discovery. The Software Engineer III, FanApp delivers business and fan impact through BOLD leadership and execution excellence, leveraging data, automation, and AI-enabled insights.

Requirements

5+ years of professional software engineering experience building consumer-facing applications or platforms.
Strong experience with modern frontend development technologies and patterns, including component-based UI development and API-driven applications.
Solid foundation in JavaScript or TypeScript and experience building maintainable, scalable user-facing systems.
Experience integrating with backend services using RESTful APIs and building resilient client-side data flows.
Experience with Go, Java, or similar programming languages.
Experience writing unit and integration tests and contributing to a culture of code quality and continuous improvement.
Strong problem-solving, debugging, collaboration, and communication skills.
Bachelor's degree in Computer Science or a related field, or equivalent practical experience.

Nice To Haves

Experience building native apps, mobile web, or high-scale ecommerce experiences.
Experience with Server-driven UI.
Experience with search, recommendations, personalization, experimentation, or merchandising systems.
Familiarity with A/B testing, analytics, and event instrumentation for consumer products.
Experience improving performance, observability, and release quality for customer-facing applications.
Experience working in cross-functional product and engineering teams in a fast-paced environment.
Prior experience serving as a tech lead on product or platform initiatives is a plus.

Responsibilities

Partner with product managers, designers, and engineers across teams to translate business goals into scalable technical solutions and deliver them with high quality.
Contribute to code reviews, documentation, automation, and engineering best practices that raise the team's overall quality bar.
Take ownership of well-scoped projects, drive execution from design through launch, and actively help improve team efficiency and delivery quality.
Design, build, test, and ship high-quality user experiences across FanApp surfaces — including search, recommendations, merchandising, promotions, and product discovery.
Identify and resolve performance bottlenecks, improve app responsiveness, and help create exceptional, conversion-driving fan experiences.
Implement instrumentation and eventing that help the team understand fan behavior, feature adoption, experimentation outcomes, and funnel performance.
Support production excellence by debugging issues, improving observability, and contributing to a strong quality and release culture.
Build robust integrations with backend APIs and services, with careful attention to performance, reliability, and maintainability.
Apply experimentation, A/B testing, and analytics to inform product decisions and continuously improve discovery and conversion experiences.
Explore and adopt modern patterns — including Server-driven UI, personalization systems, and high-scale ecommerce techniques — to push FanApp forward.
Contribute to a culture of continuous improvement by identifying opportunities to automate, instrument, and optimize engineering workflows and fan-facing surfaces.
Write clean, well-tested, maintainable code and consistently deliver well-scoped features with strong quality and measurable impact.
Drive execution end to end — from technical design through launch — with a bias toward clear communication, sound judgment, and on-time delivery.
Support a strong release and quality culture through proactive debugging, improved observability, and accountability for production health.
Help FanApp ship better discovery and conversion experiences for fans through thoughtful product engineering and close cross-functional collaboration.
Apply AI and technology to improve efficiency, quality, and outcomes.
Use data and digital tools to inform decisions and enhance performance.
Demonstrate curiosity and adaptability in adopting new technologies and ways of working.
Contribute to a culture of innovation and continuous improvement.