Senior React Native Engineer, Sleeper
Fantasy Sports
$180-235k
Fantasy sports app
Be an early applicant
Fantasy sports app
101-200 employees
Be an early applicant
$180-235k
101-200 employees
Company mission
To connect people over sports.
Role
Who you are
- We're hiring at the senior level, but will seriously consider strong mid-level engineers — we care more about what you've shipped and how deeply you understand it than about years on a resume
- An active fantasy sports player: you're in leagues each season and have opinions about how the product should work
- 4+ years of mobile application development experience, with React Native as your primary framework
- Desire to take on and own a large scale product with freedom to design and develop a best in class experience
- Proven ability to develop and implement algorithms or systems in a professional setting, with strong coding skills and knowledge of best practices
- Comfortable in fast-paced and ambiguous environments, working inside a large, established codebase
- Hold a degree in Computer Science or have equivalent experience
What the job involves
- You'll be working on our fantasy sports product — season-long leagues, drafts, matchups, live scoring, and the social layer that connects them. It's the core of Sleeper, with traffic that peaks hard on game days and a season calendar that doesn't move. You will play a crucial role in developing our mobile application to ensure scalability, reliability, and quality, impacting millions of dedicated users every day
- Our mobile platform is built on React Native, and has been modernized with TypeScript and many of the leading packages like react-query, react-navigation, and reanimated. We’re looking for an experienced mobile developer who can bring their knowledge and skills to help refine our app; bringing new features, improved quality, and lightning fast performance to our millions of users
- Collaborate with designers to understand user requirements and translate them into technical specifications for our fantasy sports product
- Write clean, maintainable, and efficient code using React Native, TypeScript, and related libraries (React Query, Navigation, Reanimated, etc)
- Troubleshoot and debug complex performance, socket, data caching and other issues
- Develop reusable UI components and implement a well-structured component hierarchy for the application
- Integrate front-end components with back-end services using APIs (RESTful or GraphQL)
- Stay up-to-date on the latest advancements in React Native, mobile development best practices, and accessibility guidelines
Our take
The popularity of being able to create fantasy teams and enjoy watching sports virtually has taken socialising around sports to a virtual level. In fact, the fantasy sports market size is expected to reach $48.6 billion by 2027. Sleeper was initially an app on which users discussed fantasy sports, but in 2017, it began hosting free fantasy football leagues, competing with sites like Yahoo. Integrating social media and sports, the company is now known to be one of the best DFS communities to hang out on.
Through substantial funding, Sleeper is expanding the game offerings on its platform and in 2022, release a new feature called Wallet that enables users to sync their preferred payment methods to the platform.
There has been consistent growth for the platform since its founding and it has successfully attracted a loyal user base.
Steph
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 4 rounds)
Sep 2021
$40m
SERIES C
May 2020
$20m
SERIES B
Total funding: $67.3m
Company benefits
- 401k and health insurance
- Unlimited Vacations
- Regular virtual game-time with the team with company-sponsored snacks
- Company-sponsored fantasy leagues with real prizes
- Team outing every quarter and company retreat once a year
Company HQ
Paradise, NV
Leadership
Nan Wang
(Co-Founder & CEO)After studying went on to become a Senior Analyst at Fidelity Investments, Representative for China Investment Corporation and Private Equity Investor at Neuberger Berman.
Henry Leung
(Co-Founder)Worked as an Android Developer at Vevo, Senior iOS Developer at Dwell Media and Lead Mobile Engineer at Whil Concepts.
Ken Wang
(Co-Founder)Previously worked as a NET Web Engineer at Genex/O’Grady Meyers, Senior C# Engineer at Decore-ative Specialties and UI Engineering Tech Lead (TV/Console Platform) at Vevo.
Weixi Yen
(Co-Founder)Worked as a Software Engineer at Kabam and then went on to work through several roles at Storm8, most recently as an Engineering Manager.
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