Rush Street Interactive · 1 month ago
Game Designer, Mathematician
United States
Full-time
Remote
Senior Level, Lead/Staff
$160K/yr - $180K/yr
8+ years expRush Street Interactive is a market leader in online casino and sports betting, currently operating real-money gaming with various brands. The Game Designer, Mathematician is responsible for designing the functional mechanics and mathematical models of original online casino games, ensuring compliance and optimizing player engagement.
GamingCasinoOnline Games
Responsibilities
Design and define the functional mechanics for original online casino games, including base game structures, bonus round triggers and flows, progressive jackpot systems, gamble features, cascading/grid-style mechanics, and meta-game experiences
Build the complete mathematical models for each game, including RTP targets, volatility profiles, hit frequency, standard deviations, prize distribution, and payout structures
Create and maintain PAR sheets, combination sheets, and all regulatory math documentation required for internal review, testing laboratory certification and regulatory approvals
Define symbol hierarchies, paytable structures, reel layouts (including non-traditional formats such as grid slots and cluster-pay), win-line configurations, and feature trigger conditions
Build and run simulation code (Python, C++, C#, Javascript, or equivalent) to validate math models, verify behavior across gameplay scenarios, and test edge cases
Write demo and prototype code to rapidly test mechanic concepts before full production commitment
Evaluate existing casino concepts for adaptation into RSI’s online real money gaming environment
Create comprehensive Game Design Documents (GDDs) and functional specifications for engineering, art, audio, and production teams
Ensure all math models meet regulatory requirements across RSI’s operating jurisdictions, adapting designs for market-specific RTP ranges, win caps, odds requirements, and fairness standards
Play-test and iterate on in-development games, providing feedback on math balance, mechanic feel, feature pacing, and edge case behavior
Analyze post-launch game performance data and recommend math and mechanic adjustments to live games
Maintain and contribute to RSI’s internal game design standards and style guides
Collaborate with creative leads by providing functional specifications and mechanic requirements that inform visual and thematic direction
Work with software engineers to verify math implementation in code and review game software during development
Partner with designers and product managers to brainstorm concepts, refine games in progress, and share best practices
Qualification
Required
Bachelor's degree in mathematics, statistics, applied mathematics, computer science, physics, engineering, or a closely related quantitative field required
8+ years of direct, hands-on experience in slot game design and/or slot game mathematics within a land-based or online casino game studio environment
Expert-level knowledge of casino game mathematics: RTP calculation, volatility modeling, hit frequency analysis, standard deviation, prize distribution, combinatorics, and probability theory
Proven ability to design engaging slot game mechanics across different gambling concepts and styles, including innovative feature structures, bonus flows, progressive/jackpot systems, and paytable economics
Proficiency in building and running game math simulations and verification scripts using Python, C++, C#, Javascript or equivalent programming languages
Advanced Excel skills for probability modeling, paytable prototyping, and large-dataset analysis
Deep familiarity with PAR sheet creation and regulatory documentation standards for online and/or land-based slot games
Strong understanding of player psychology, behavioral engagement patterns, and what makes slot games commercially successful
Excellent communication skills with the ability to translate complex mathematical concepts into clear documentation for both technical and non-technical audiences
Preferred
Master's degree or higher in a quantitative discipline preferred
Benefits
Discretionary annual company bonus (Eligibility Varies by Role)
401(k) plan with 100% company match on the first 4%
Comprehensive medical coverage (HSA & FSA plans), dental, and vision insurance
Paid Time Off (Eligibility Varies by Role)
Employee Assistance Program (EAP)
Company
Rush Street Interactive
Rush Street Interactive offers online casino and sports betting in the U.S.
501-1000 employees
H1B Sponsorship
Rush Street Interactive has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Management and Executive
Trends of Total Sponsorships
*2021 (1)
Funding
Current Stage
Public CompanyTotal Funding
$186MKey Investors
Fidelity
2026-05-05Post Ipo Secondary· $26M
2020-12-29Post Ipo Equity· $160M
2020-12-29IPO
Leadership Team
Richard Schwartz
Chief Executive Officer
K
Kyle Sauers
President & Chief Financial Officer
Recent News
2026-05-06
MarketScreener
2026-05-06
Company data provided by crunchbase