Software Engineer, Full Stack Developer, Backend Developer

Location: New York

THE POSITIONOur roster has an opening with your name on it

Fan Duel is looking for a mid-level full stack software engineer who can work independently designing, developing, and testing software applications, demonstrating a solid understanding of programming languages and software development methodologies, while actively collaborating with cross-functional teams to translate requirements into functional code, troubleshoot issues, and contribute to code reviews to ensure quality and maintainability.

In addition to the specific responsibilities outlined above, employees may be required to perform other such duties as assigned by the Company. This ensures operational flexibility and allows the Company to meet evolving business needs.

THE GAME PLAN
Everyone on our team has a part to play

• Independently design, implement, and deliver high-quality features and code within your team, ensuring successful outcomes for assigned tasks.
• Translate business requirements into technical solutions and actively contribute to team goals, tracking progress and flagging roadblocks early.
• Collaborate with seniors to break down large initiatives and proactively debug complex issues across the stack.
• Navigate high levels of ambiguity independently, propose robust solutions, and evaluate technical trade-offs before implementation.
• Work effectively with cross-functional partners and communicate technical concepts clearly to both technical and non-technical stakeholders.
• Write maintainable, well-tested code and maintain comprehensive documentation for features and system designs.
• Perform code reviews to ensure code quality and adherence to best practices.
• Make informed decisions that consider long-term scalability, maintenance, and system reliability.
• Take full ownership of assigned components while proactively learning new technologies and methodologies to improve the codebase.
• Monitor systems, respond to incidents, and help maintain high standards through knowledge sharing and supporting newer team members as part of an on-call rotation.
• Integrate AI coding assistants and agentic tools into their daily workflow as a default, not an afterthought.
• Use AI to accelerate the full lifecycle - from drafting specs and generating scaffolding to writing tests, reviewing diffs, and producing documentation.
• Exercise strong engineering judgment when working with AI output: validate, test, and review AI-generated code rather than accepting it blindly.
• Help define and improve team standards for responsible, effective AI-assisted development.

THE STATS
What we're looking for in our next teammate

• Degree in Computer Science or related field with 3+ years of experience preferred.
• Experience developing backend services using Java and Spring Boot.
• Solid foundation in JavaScript, ReactJS, HTML5, CSS3, Type Script, and React Native.
• Experience building responsive web and mobile applications with a focus on cross-browser compatibility.
• Understanding of performance optimization techniques (e.g., lazy loading, code minification).
• Familiarity working with CI/CD pipelines and testing frameworks, preferably Jest.
• Working knowledge of relational databases, concurrency, and messaging queues (e.g., Kafka).
• Experience implementing and managing API services using GraphQL and Cosmo for data federation.
• Familiarity with software design patterns for reliable and maintainable code.
• Experience with cloud infrastructure, preferably AWS.
• Familiarity with containerization (Docker) and orchestration (Kubernetes).
• Experience with Gradle, Helm, Terraform, and Build Kite.
• Demonstrated experience using AI development tools (e.g., AI coding assistants, agentic IDEs, LLM-based testing or review tools) in real projects.
• A test-first mindset and commitment to code quality, maintainability, and observability.
• Strong communication skills and the ability to collaborate across functions.

ABOUT FANDUEL

Fan Duel Group is the premier mobile gaming company in the United States and Canada. Fan Duel Group consists of a portfolio of leading brands across mobile wagering including:
America's #1 Sports book, Fan Duel Sports book; its leading iGaming platform, Fan Duel Casino; the industry's unquestioned leader in…