Senior Fullstack Engineer

At DraftKings, AI is becoming an integral part of both our present and future, powering how work gets done today, guiding smarter decisions, and sparking bold ideas. It's transforming how we enhance customer experiences, streamline operations, and unlock new possibilities. Our teams are energized by innovation and readily embrace emerging technology. We're not waiting for the future to arrive. We're shaping it, one bold step at a time. To those who see AI as a driver of progress, come build the future together.
The Crown Is Yours
As a Senior Fullstack Engineer, you'll play a critical role in developing high-performance applications that support thousands of users daily. Working in a collaborative, cross-functional environment, you will contribute to building scalable, robust, and distributed systems while gaining hands-on experience with Cloud, Kubernetes, and AI-driven tooling. Your work will directly impact mission-critical business operations, ensuring optimal efficiency, scalability, and seamless user experiences.
What you'll do as a Senior Fullstack Engineer

• Develop and maintain high-performance web applications using .NET and React.
• Build and optimize complex distributed systems and APIs that power core business workflows.
• Ensure high availability and reliability of our systems through performance tuning and best engineering practices.
• Write clean, maintainable, and testable code, covering functionality with unit, integration, and performance tests.
• Investigate and debug production issues, optimize system performance, and ensure smooth operations.
• Participate in code reviews, mentorship, and architectural decisions, contributing to a culture of excellence.

What you'll bring

• 3+ years of experience in C#/.NET development with a strong understanding of object-oriented principles.
• 2+ years of experience with React or other modern JavaScript frameworks such as Angular or Vue.
• Experience building distributed systems and working with Docker, Kubernetes, and AWS.
• Experience with SQL and NoSQL databases.
• Good understanding of software architecture, performance optimization, and scalability challenges.
• Solid debugging and troubleshooting skills, with experience profiling and optimizing application performance.
• Good level of verbal and written English for clear communication within a global team.

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Join Our Team
We're a publicly traded (NASDAQ: DKNG) technology company headquartered in Boston. As a regulated gaming company, you may be required to obtain a gaming license issued by the appropriate state agency as a condition of employment. Don't worry, we'll guide you through the process if this is relevant to your role.