Senior Software Engineer, Backend

DraftKings Inc.; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

DraftKings Inc. is seeking a Senior Software Engineer to design and build high-performance systems that scale to support millions of transactions weekly. You will own key services, contribute to architecture decisions, and deploy code rapidly to production in a cloud-native environment.

This role collaborates with Product and Architecture teams and emphasizes reliability and performance. You will work with Java or C#, implement robust tests, and help drive engineering excellence through code

Qualifications

• Bachelor's degree in Computer Science or equivalent.
• Experience with Java or C# and OO design.
• Strong grasp of design patterns and scalable software architecture.
• Experience with relational databases.
• Proven cloud experience (AWS) and microservices.
• Experience building automated test suites.
• Performance tuning in distributed systems.
• Ability to mentor and influence technical decisions.
• Collaborative and independent work style.

Responsibilities

• Design and build systems and APIs powering experiences for millions of users.
• Develop scalable, high-performance services in a cloud-native environment.
• Partner with Product and Architecture teams to implement ideas.
• Ensure code quality with comprehensive tests across levels.
• Respond to production incidents and drive root-cause analysis.
• Own health and performance of services with focus on scalability.
• Participate in code and design reviews to raise engineering standards.
• Adapt in a fast-paced environment emphasizing learning.

Skills

Java

C#

OO programming

Design patterns

Scalable architecture

Automated tests

Performance tuning

Mentoring

Collaboration

Education

Bachelor's degree in Computer Science

Tools

Docker

Kubernetes

AWS

Job description

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 Software Engineer, you’ll join one of the most innovative technology teams, where you’ll engineer high-performance systems that scale to support millions of transactions each week. In this role, you’ll work closely with engineers, product managers, and architects to build scalable and reliable software that directly impacts our customers. You’ll take full ownership of key services, contribute to architectural decisions, and see your code quickly deployed to production. This is a unique opportunity to sharpen your skills in a fast-paced environment where technical excellence and impact go hand in hand.

What You’ll Do

• Design and build systems and APIs that power experiences for millions of users across our platforms.

• Develop scalable, high-performance services and applications in a cloud-native environment.

• Partner cross-functionally with Product and Architecture teams to bring new ideas to life.

• Ensure code quality with comprehensive test coverage including unit, integration, and performance tests.

• Respond to production incidents and contribute to root cause analysis and continuous improvement efforts.

• Own the health and performance of the services you build, with a strong focus on scalability and reliability.

• Participate in code and design reviews, elevating engineering excellence across the team.

• Stay adaptable in a fast-paced environment that values flexibility, iteration, and continuous learning.

What You’ll Bring

• Bachelor’s degree in Computer Science or any relevant combination of education, experience, and training

• At least 3 years of software development experience using object‑oriented languages like Java or C#.

• A strong grasp of object‑oriented programming, design patterns, and scalable software architecture.

• At least 1 year of experience working with relational databases.

• Proven experience developing in cloud environments like AWS, including microservices and containerization such as Docker and Kubernetes.

• A track record of writing and maintaining automated test suites across multiple levels.

• Experience tuning performance in large-scale distributed systems.

• The ability to mentor others and influence technical decision‑making.

• A collaborative, solutions‑driven mindset and the ability to work both independently and in team settings.

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.