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Senior Frontend Web Engineer

About Sleeper:
Sleeper is a rapidly expanding platform for fantasy sports and games, revolutionizing the way sports fans connect and engage. With Sleeper Picks, our real-money Daily Fantasy Sports (DFS) game, users predict player performance against statistical projections provided by third-party vendors. We are at the forefront of innovation in the sports gaming industry, backed by some of Silicon Valley's top investors.

Role Overview:

We are searching for a highly intelligent and innovative Frontend Web Engineer to join our team. At Sleeper, we believe in the power of smart, creative individuals to drive change and build incredible things, regardless of their background in specific technologies. You will play a crucial role in developing our web products to ensure scalability, reliability, and quality, impacting millions of dedicated users every day.

Sleeper is a rapidly growing platform for sports fans with social at its core. Our web platform consists primarily of React, typescript, and webpack and shares much of its core with our mobile product. We’re looking for an experienced web developer who can bring their knowledge and skills to help refine our web product; bringing feature, quality, and technology parity to our mobile experience.

Responsibilities:

  • Collaborate with designers to understand user requirements and translate them into technical specifications for the React web application.

  • Write clean, maintainable, and efficient code using React, JS, and related libraries (Tailwind, React Query, NextJS, etc.).

  • Develop reusable UI components and implement a well-structured component hierarchy for the React application.

  • Implement user interface (UI) functionality and logic using React features like state management, hooks, and server-side rendering.

  • Integrate front-end components with back-end services using APIs (RESTful or GraphQL).

  • Troubleshoot and debug complex web application issues

  • Stay up-to-date on the latest advancements in React, web development best practices, Core Web Vitals, and accessibility guidelines.

Who You Are:

  • A degree in Computer Science or equivalent experience

  • 5+ years of web development with an emphasis on frontend

  • Desire to take on and own a large scale product with freedom to design and develop a best in class product

  • Proven ability to develop and implement algorithms or systems in a professional setting, with strong coding skills in Javascript and strong a web technologies skillset

  • Highly proactive, with a track record of building processes from scratch and a willingness to challenge traditional risk management paradigms.

  • Comfortable in fast-paced, ambiguous environments, thriving on innovation and the challenge of creating something new.

What We Offer:

  • A salary range of $150,000 to $235,000 USD, based on experience, plus benefits including Medical, Dental, PTO, and 401k.

  • A small, impactful team environment where you can truly make a difference.

  • The opportunity to be at the forefront of transforming the sports betting and DFS landscape.

  • Support for professional growth with a company backed by leading investors.

Our Hiring Philosophy

Sleeper believes in quality over quantity, and intentionally keeps our team small as a result. In past roles, we found it very hard to make a big impact when companies grow too large in size, which has a detrimental effect on the product and the impact any single individual can have. Our team includes designers, engineers, product experts, and finance & operation focused on one thing — connecting people over sports. We believe in fair and equitable pay. Certain locations in the United States require job postings to include a reasonable estimate of the base salary range and/or a general description of benefits and other compensation applicable to the role.

Competitive salary plus benefits including Medical, Dental, PTO, 401k. Please note that The salary range for this role ($150,000 to $235,000 per year salary) takes into account a wide range of factors that are considered in making compensation decisions including, but not limited to, skill sets; experience and training; licensure and certifications; and other business and organizational needs. The policy of Sleeper is to provide equal employment opportunities to all applicants and employees without regard to race, color, creed, religion, sex, sexual orientation, gender identity, marital status, citizenship status, age, national origin, ancestry, disability, veteran status, or any other legally protected status and to affirmatively seek to advance the principles of equal employment opportunity. Sleeper is committed to being an Equal Opportunity Employer and offers opportunities to all job seekers, including job seekers with disabilities. If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access the Company’s career webpage as a result of your disability. You may request reasonable accommodations by sending an email to [email protected].

Headquartered in Las Vegas, NV, Sleeper is backed by Silicon Valley’s top investors, including Andreessen Horowitz, General Catalyst, and Expa.


To learn more, visit us online at: www.sleeper.com

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Average salary estimate

$192500 / YEARLY (est.)
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$150000K
$235000K

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DATE POSTED
September 24, 2025
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