Web Engineer (Fantasy Sports)

Joseph Sleeper & Sons, Inc.
San Francisco, CA, United States
13 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
5 years minimum
Compensation
$160,000.0 - $220,000.0
Working hours
Regular working hours
Job source

Tech stack

Clean Code Principles Computer Animation Application Programming Interfaces (APIs) Software Debugging Web Development Next.js TypeScript Web Content Accessibility Guidelines Web Strategies Tailwind ReactJS Information Technology
+3 more
Graphql Restful APIs Data Caching

Job description

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 the fantasy experience on web, ensuring it’s scalable, reliable, and fast for millions of dedicated users every day., * 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, Typescript, and related libraries (Tailwind, React Query, NextJS, etc.).
  • Build fluid, responsive interfaces with a strong emphasis on animation and gesture, the interactions that make the product feel fast and alive.
  • 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, web development best practices, and accessibility guidelines.

Requirements

Our web experience is built with React and Typescript, along with Tailwind, React Query, and NextJS. We’re looking for an experienced web developer who can bring their knowledge and skills to help shape it; bringing new features, improved quality, and lightning fast performance to our millions of users. You’ll have real ownership over what you build and a direct hand in the product decisions behind it., * An active fantasy sports player: you’re in leagues each season and have opinions about how the product should work

  • 5+ years of web application development experience, with React as your primary framework
  • Experience building and owning a large-scale, consumer-facing application - not a series of smaller one-off projects
  • A strong eye for interaction detail, with real depth in animation and gesture work on the web
  • Desire to take on and own a large scale product with freedom to design and develop a best in class experience
  • Comfortable in fast-paced and ambiguous environments, equally at home extending an existing codebase and standing up new surfaces
  • Hold a degree in Computer Science or have equivalent experience

Benefits & conditions

  • A salary range of $160,000 to $220,000 USD, based on experience, plus benefits including Medical, Dental, PTO, and 401k.
  • A small, impactful team environment where you can truly make a difference.
  • Support for professional growth with a company backed by leading investors.

About the company

Sleeper is a rapidly expanding platform for fantasy sports and games, revolutionizing the way sports fans connect and engage. Though once only an NFL fantasy football company, we have continued to expand our offerings over 10+ years of operation with NBA, LCS, and soccer. In Sleeper Picks, our real-money Daily Fantasy Sports (DFS) game, users predict player performance against 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.

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Good distractions

Talks and stories from around this role — technically off-topic, practically not.

4:30 min

Scaffolding pages and routing single-page applications with Next.js

Josh Goldberg · JS Congress

1:21 min

Exploring the target application for front end tests

Anna Mcdougall · JS Congress

2:52 min

Generating APIs with the Neo4j GraphQL library

William Lyon · LIVE

10:09 min

Transitioning from graphic design to large scale frontend architecture

Erasmo Hernandez Erasmo Hernandez · World Congress 2026 Europe

1:31 min

Introduction to the GraphQL, Apollo, and Next.js stack

Josh Goldberg · JS Congress

3:07 min

Finding a content niche with frontend UI recreations

Nacho Iacovino · World Congress 2021

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