Senior Frontend Engineer

Rush Street Interactive (NYSE: RSI) is a market leader in online casino and sports betting, currently operating real-money gaming with our brands: BetRivers.com, PlaySugarHouse.com, and RushBet.co. We’re building bridges between online, social and land-based gaming businesses to create amazing, integrated experiences that keep players in the game. We are a mobile-first organization evolving our digital platform toward a modern, scalable, event-driven architecture. As a Sr. Front End Engineer, you will play a foundational role in building and evolving our client applications and the event orchestration architecture that powers them. This role extends beyond traditional feature development. You will help architect and implement scalable client-side instrumentation frameworks, shared frontend capabilities, and integration patterns that enable structured event collection, analytics, lifecycle engagement, and downstream data systems. You will work in close coordination with feature-delivery teams to ensure instrumentation and orchestration standards are embedded directly into product development. In parallel, you will help shape the long-term evolution of our client event architecture. This position requires deep frontend and mobile expertise combined with systems thinking, architectural rigor, and a strong understanding of scalable event-driven systems. What You'll Do: Client & Mobile Engineering Frontend development across web and native mobile platforms (React, Angular, TypeScript, iOS, Android). Contribute to and evolve a modular, scalable micro-frontend architecture. Build reusable frontend components and shared client frameworks. Optimize performance and responsiveness across devices, with particular focus on mobile reliability and efficiency. Establish best practices for SDK integrations, consent enforcement, observability, and client performance. Event Instrumentation & Orchestration Design and implement structured event instrumentation frameworks across web and mobile applications. Instrument native iOS and Android applications, including analytics/CDP SDK integration with attention to performance, batching, offline handling, and reliability. Define, version, and govern structured event schemas and taxonomy standards. Architect scalable integration patterns between client applications, backend services, and downstream data platforms. Ensure event data is reliable, well-structured, and suitable for streaming, analytics, identity resolution, and activation use cases. Support monitoring, debugging, and continuous improvement of client event pipelines. Cross-Functional Partner closely with Product, Analytics, and Engineering teams to align instrumentation and architecture with business objectives. Participate in architectural discussions that shape long-term platform modernization. Balance ongoing support needs with forward-looking architectural improvements. Mentor engineers, conduct code reviews, and elevate frontend and mobile engineering standards. Clearly communicate technical concepts to both technical and non-technical stakeholders. What You'll Bring: 8+ years of experience in software engineering with strong frontend expertise. Deep experience building and scaling web and native mobile applications. Strong proficiency in React, Angular, TypeScript, and native iOS/Android development. Proven experience implementing analytics or CDP SDKs within mobile applications. Strong understanding of event-driven architecture and structured event schema design. Experience integrating client event streams into CDPs and downstream analytics platforms. Familiarity with relational databases (Postgres, Oracle) and analytical platforms (e.g., Snowflake). Experience with CI/CD pipelines, Git-based workflows, and modern development tooling. Strong understanding of data integrity, governance, observability, and privacy best practices. Demonstrated ability to lead technical discussions and influence architectural decisions. Excellent written and verbal communication skills #LI-REMOTE #LI-PROMOTE This role spans a wide breadth of experience at Rush Street Interactive, welcoming candidates with diverse experiences, backgrounds, and locations. The pay range reflects potential variations in experience, skills, and location. The pay range does not reflect total compensation, which includes base pay, benefits, and/or bonuses. For candidates outside the US (Canada, Europe, Latin America), we take a locally informed approach to compensation and will share specific ranges based on your country of residence. Location Eligibility (for nationwide roles): Open to candidates across the U.S. Location Eligibility (for other roles): Location requirements may vary and will be specified in the job posting. Canada Benefits: Comprehensive health coverage (medical, prescription drugs, vision, and paramedical services) Competitive dental plan with strong coverage for basic, major, and orthodontic services Annual Health Care Spending Account (HCSA) to support your personalized wellness needs 24/7 virtual healthcare access for you and your eligible dependents Life, disability, and AD&D insurance for financial peace of mind Wellness-focused perks including mental health support and rewards programs RRSP and company DPSP contribution, up to 100% of the first 4% Parental leave top up policy Paid vacation and sick time Pay Range for candidates in Canada: $103,000 — $155,000 CAD What Makes Us Great: Comprehensive compensation Work-life balance initiatives Autonomy – we embrace personal freedom and responsibility Creativity – we are open to new ideas of how we can be better Growth – we want you to develop personally as well as professionally Top-notch professionals who are passionate about what they do People-oriented environment and supportive atmosphere As a rapidly growing company in an emerging industry, you’ll have a huge impact on our product and our company. We like proactive team members and strive to have a company of self-disciplined professionals who enjoy collaboration, having fun, and of course, achieving together what others believe to be improbable. We are dedicated to treating everyone with respect and to support your professional and personal growth. Rush Street Interactive is an equal opportunity employer and committed to a diverse and inclusive workplace. All qualified applicants will be considered for employment without regard to race, national origin, ancestry, sex, sexual orientation, sexual identity and expression, marital status, family status, lifestyle, age, culture, religion, military and veteran status, citizenship, or disability. Be at the forefront of this ground-breaking industry! Apply now! Rush Street Interactive uses AI-assisted tools at select stages of the hiring process to enhance efficiency, consistency, and communication. AI does not make hiring decisions - final decisions are made exclusively by our recruiting and hiring teams.