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Software Engineer, Backend
Sleeper · San Francisco , CA, USA
Pay
$140k–185k
Setting
Hybrid
Listed by Sleeper for a position based in the United States. Employers on this board attest they are hiring domestically.
Senior Software Engineer, Backend
Sleeper · San Francisco , CA, USA
Pay
$170k–220k
Setting
Hybrid
Senior Software Engineer, Backend
Location
San Francisco
Employment Type
Full time
Location Type
Hybrid
Department
Engineering
Overview
Application
About Sleeper
Sleeper is on a mission to connect people over sports through games and community. As one of the fastest-growing platforms in the fantasy sports and real-money gaming space, we're redefining how sports fans engage—whether it's through season-long leagues, pick'em contests, or real-time interactions with friends.
Our team is lean, passionate, and product-driven. We obsess over user experience and believe that building delightful, fast, and reliable products is the best way to grow. Backed by some of the most respected investors in Silicon Valley, including Andreessen Horowitz and General Catalyst, we're building the future of sports engagement.
About the Role
We're looking for a Senior Software Engineer - Backend to help us scale the core systems behind our fantasy sports and DFS (Daily Fantasy Sports) offerings. In this role, you'll build and own critical backend services, and collaborate with fellow engineers as we scale to support tens of millions of passionate sports fans.
You'll collaborate cross-functionally to bring innovative features to life—from real-time contest engines and game logic to personalized content and secure, seamless payments. You'll own significant parts of the backend stack and help raise the bar for performance, scalability, and reliability at Sleeper.
What You'll Do
Design and build core backend systems that power Sleeper's games and real-time user experiences—fantasy contests, Sleeper Picks, user profiles, leaderboards, and more.
Build scalable, distributed systems capable of handling millions of concurrent users with low latency and high availability.
Own backend initiatives from concept to deployment, ensuring clean interfaces, well-documented services, and resilient infrastructure.
Optimize system performance and proactively address bottlenecks through monitoring, profiling, and capacity planning.
Collaborate cross-functionally with product, design, and frontend teams to deliver features that users love.
Contribute thoughtful code reviews and help strengthen backend engineering best practices and standards.
Who You Are
5+ years of backend software engineering experience.
Proven ability to build and scale distributed systems that serve millions of users in real-time or gaming environments.
Strong proficiency in one or more backend languages (e.g., Go, Python, Node.js, Java), and an understanding of trade-offs between them.
Solid knowledge of databases (both SQL and NoSQL), caching strategies, and message queues (e.g., Kafka, RabbitMQ, Pub/Sub).
Comfortable designing and maintaining RESTful and/or graphql APIs, data models, and internal tooling.
Cloud experience (AWS, GCP, or similar), with familiarity with containers (Docker) and orchestration (Kubernetes a plus).
Strong product mindset—you care about the why, not just the how, and you build with users in mind.
Excellent communication and collaboration skills.
Bonus: Proficiency in Elixir
Bonus: Passion for sports, gaming, or building multiplayer or real-time systems.
Why Join Sleeper?
Massive Impact – Your work will touch millions of users and help shape the next generation of sports entertainment.
High Ownership – We trust our engineers to make high-leverage decisions and drive meaningful outcomes.
Startup Agility – Move fast, ship often, and see your work in the hands of users quickly.
Culture-First Team – We're a team of builders, thinkers, and sports lovers who value humility, collaboration, and having fun along the way.
What We Offer
Competitive salary ($170,000–$220,000) /year not inclusive of stock options and benefits)
Equity
Comprehensive medical, dental, and vision insurance
401(k)
Generous PTO and flexible remote work policy
Opportunities for fast career growth in a high-impact role
A small, focused team where your contributions truly matter
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Listed by Sleeper for a position based in the United States. Employers on this board attest they are hiring domestically.
Data Scientist - Risk and Trading (Daily Fantasy Sports)
Sleeper · Remote, Remote, United States
Pay
$75k–150k
Setting
Remote
Data Scientist - Risk and Trading (Daily Fantasy Sports)
Location
Remote, United States
Employment Type
Full time
Location Type
Remote
Department
Engineering
Overview
Application
About Sleeper:
Sleeper is one of the fastest growing sports platforms in the US. As the leader in Fantasy Sports, Sleeper’s product portfolio includes a variety of free-to-play Fantasy Sports and real money Daily Fantasy Sports (“DFS”) games and applications. Our growing list of titles spans a diverse range of sports leagues, including the NFL, NBA/WNBA, MLB, NHL, EURO, and other soon-to-be released offerings.
We are seeking a Data Scientist with relevant DFS or Sportsbook experience to help support our risk and trading function.
Responsibilities:
Support risk and liability management with respect to Sleeper’s DFS operations, conducting data analysis and modeling to identify trends, patterns, and insights.
Develop predictive models and algorithms to better understand Sleeper’s real-time liability, including risk exposure related to specific markets and events.
Conduct data wrangling, processing and cleaning operations, and design processes, as well as tools for monitoring and analyzing performance and accuracy.
Monitor all pricing for real-time odds, active player statistics markets, breaking news, and other relevant information to make real-time market adjustments / suspensions, while also ensuring that data flows from external partners are being recorded timely and accurately.
Build out user risk profiles, staying close to behavior patterns and trends, and collaborate with product and engineering teams to enhance personalization within our DFS ecosystem.
Automate risk and trading processes to scale for growth in users, sports, and markets in support of all game operations, and contribute to research and innovation for this function as a whole.
Qualifications:
Background in computer science, data science, machine learning, mathematics/statistics, or a similar field with related experience. Comfortable working with and analyzing large data sets.
In-depth knowledge of DFS, sports betting, player props, handicapping, expected value, and closing line value. Ideal candidates have extensive experience with high volumes of DFS/sports betting and real money games, either as a trader, +EV bettor, and/or oddsmaker.
Proactive – ready to hit the ground running; excited about the idea of building out processes from scratch, and not afraid to break the “sports trading mold”, challenging how the industry has historically approached risk management and trading.
Comfortable working “off hours” to align with peaks in the sports calendar. This will often include nights and weekends. We are generally quite flexible and will work with you to ensure an appropriate work/life balance is molded around game schedules.
Knowledge of SQL, Python, and/or related software/tools, and familiarity in working with databases, data warehouses, data visualizations and report building.
Experience with player performance metrics, game outcome predictions, in-game event modeling, as well as working with real-time sports data feeds and APIs.
Additional Information:
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.
For this role, in this particular location, a reasonable estimate of the base salary range for new hires is between $75,000 USD to $150,000 USD, plus benefits including Medical, Dental, PTO, and 401k.
Please note that the salary range for this role 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 jobs@sleeper.app.
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
Apply for this Job
Powered by
Privacy PolicySecurityVulnerability Disclosure
Listed by Sleeper for a position based in the United States. Employers on this board attest they are hiring domestically.
Staff Software Engineer – Backend
Sleeper · San Francisco , CA, USA
Pay
$225k–300k
Setting
Hybrid
Staff Software Engineer – Backend
Location
San Francisco
Employment Type
Full time
Location Type
Hybrid
Department
Engineering
Overview
Application
Location: Remote-friendly. Preference for SF Bay Area, Los Angeles, NYC, or Pacific Northwest.
About Sleeper
Sleeper is on a mission to connect people over sports through games and community. As one of the fastest-growing platforms in the fantasy sports and real-money gaming space, we’re redefining how sports fans engage—whether it’s through season-long leagues, pick’em contests, or real-time interactions with friends.
Our team is lean, passionate, and product-driven. We obsess over user experience and believe that building delightful, fast, and reliable products is the best way to grow. Backed by some of the most respected investors in Silicon Valley, including Andreessen Horowitz and General Catalyst, we're building the future of sports engagement.
About the Role
We’re looking for a Staff Software Engineer - Backend to help us scale the core systems behind our fantasy sports and DFS (Daily Fantasy Sports) offerings. In this role, you’ll drive architectural decisions, build critical backend services, and mentor fellow engineers as we scale to support tens of millions of passionate sports fans.
As a senior technical leader, you’ll collaborate cross-functionally to bring innovative features to life—from real-time contest engines and game logic to personalized content and secure, seamless payments. You’ll be empowered to own major parts of the backend stack and help define what "great" looks like in terms of performance, scalability, and reliability at Sleeper.
What You’ll Do
Design and build core backend systems that power Sleeper's games and real-time user experiences—fantasy contests, Sleeper Picks, user profiles, leaderboards, and more.
Architect scalable, distributed systems capable of handling millions of concurrent users with low latency and high availability.
Lead backend initiatives from concept to deployment, ensuring clean interfaces, well-documented services, and resilient infrastructure.
Optimize system performance and proactively address bottlenecks through monitoring, profiling, and capacity planning.
Collaborate cross-functionally with product, design, and frontend teams to deliver features that users love.
Mentor engineers, provide thoughtful code reviews, and shape backend engineering best practices and standards.
Drive innovation, technical direction, and team culture as a key engineering voice at the leadership level.
Who You Are
7+ years of backend software engineering experience, including experience in staff-level or tech lead roles.
Proven ability to design and scale distributed systems that serve millions of users in real-time or gaming environments.
Strong proficiency in one or more backend languages (e.g., Go, Python, Node.js, Java), and an understanding of trade-offs between them.
Deep knowledge of databases (both SQL and NoSQL), caching strategies, and message queues (e.g., Kafka, RabbitMQ, Pub/Sub).
Comfortable designing and maintaining RESTful and/or graphql APIs, data models, and internal tooling.
Cloud experience (AWS, GCP, or similar), with familiarity with containers (Docker) and orchestration (Kubernetes a plus).
Strong product mindset—you care about the why, not just the how, and you build with users in mind.
Excellent communication and collaboration skills. You elevate your teammates and enjoy mentoring.
Bonus: Proficiency in Elixir
Bonus: Passion for sports, gaming, or building multiplayer or real-time systems.
Why Join Sleeper?
Massive Impact – Your work will touch millions of users and help shape the next generation of sports entertainment.
High Ownership – We trust our engineers to make high-leverage decisions and drive meaningful outcomes.
Startup Agility – Move fast, ship often, and see your work in the hands of users quickly.
Culture-First Team – We’re a team of builders, thinkers, and sports lovers who value humility, collaboration, and having fun along the way.
What We Offer
Competitive salary ($225,000–$300,000/year not inclusive of stock options and benefits)
Equity
Comprehensive medical, dental, and vision insurance
401(k)
Generous PTO and flexible remote work policy
Opportunities for fast career growth in a high-impact role
A small, focused team where your contributions truly matter
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 ($225,000 to $300,000 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 jobs@sleeper.app.
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
Apply for this Job
Powered by
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Listed by Sleeper for a position based in the United States. Employers on this board attest they are hiring domestically.
Senior Frontend Engineer (Mobile)
Sleeper · San Francisco , CA, USA
Pay
$180k–235k
Setting
Hybrid
About Sleeper:
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.
Role Overview:
We are searching for a highly intelligent and innovative Frontend Software 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 mobile and 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 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 developer who can bring their knowledge and skills to help refine our product; bringing new features, improved quality, and lightning fast performance to our millions of users.
Responsibilities:
Collaborate with designers to understand user requirements and translate them into technical specifications for our products.
Write clean, maintainable, and efficient code using React Native, TypeScript, and related libraries (React Query, Navigation, Reanimated, etc).
Develop reusable UI components and implement a well-structured component hierarchy for the application.
Implement user interface (UI) functionality and logic using React features like state management, props, hooks, and lifecycle methods.
Integrate front-end components with back-end services using APIs (RESTful or GraphQL).
Troubleshoot and debug complex performance, socket, data caching and other issues
Stay up-to-date on the latest advancements in React, mobile development best practices, and accessibility guidelines.
Who You Are:
A degree in Computer Science or equivalent experience
5+ years of mobile / 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 knowledge of best practices
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 $180,000 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.
Listed by Sleeper for a position based in the United States. Employers on this board attest they are hiring domestically.
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