Senior Software Engineer - Publishing Platform, Riot Mobile (Los Angeles)

Riot engineers bring deep knowledge of specific technical areas but also value the opportunity to work in a variety of broader domains. As Software Engineers, we work with both new and current technology, creating innovative solutions to overcome high-volume obstacles and to deliver player value.Riot Mobile is a personalized, always-on companion that connects players to the full Riot ecosystem—bridging in-game and out-of-game experiences to keep players engaged, informed, and ready to play. Designed as a player’s daily portal into Riot’s worlds, Riot Mobile helps millions of players stay connected to what matters most, from tailored news, patch notes, and esports to social experiences like cross-platform chat and lightweight coordination with friends. As a core surface for engagement beyond the PC or console, Riot Mobile ensures players have meaningful, game-enriching experiences wherever they are.As a Senior Software Engineer on the Riot Mobile team, you’ll build and scale a mobile platform that supports millions of players across Riot’s ecosystem. You’ll work across iOS and Android to develop features spanning personalization, social systems, and cross-game experiences, while owning multi-month technical efforts from discovery through delivery. You’ll collaborate with product, design, and engineering partners to solve ambiguous problems, make impactful technical decisions, and improve the quality and resilience of the platform. Riot Mobile is built with native code, Kotlin Multiplatform (KMP), numerous Riot APIs, AWS Lambdas, some React, embedded multimedia and live streaming, small Spring Boot services, and Riot’s internal SDK.Responsibilities:Design, build, and maintain mobile features across iOS and Android that support millions of players across Riot’s ecosystemOwn and execute on multi-month projects, from technical discovery and prototyping through production deliveryCollaborate with product managers, designers, and engineers across teams to break down ambiguous problem spaces and deliver impactful solutionsMake and influence technical decisions at the team level, contributing to architecture, system design, and long-term technical strategyWrite high-quality, maintainable code with appropriate test coverage, and uphold engineering excellence through code reviews and best practicesImprove the reliability and performance of Riot Mobile by contributing to monitoring, on-call rotations, incident response, and root cause analysisContribute to and evolve team development processes, CI/CD pipelines, and engineering standardsMentor and support other engineers through collaboration, code reviews, and knowledge sharingPartner with teams across Riot to integrate features with shared systems and enable cross-game experiencesRequired Qualifications: 4+ years of professional software engineering experience, including experience building and shipping mobile applicationsBachelor's or Master’s degree in Computer Science or a related field, or comparable experience in software developmentExperience working with complex code basesExperience working with UX and visual designersStrengths in collaboration, communication, technical requirements gathering, and determining technical strategyDesired Qualifications:Professional experience working with web front end tech (preferably React)Experience with or willingness to work in Kotlin Multiplatform (KMP)Professional experience with telemetry and analytics (e.g. Firebase, Statsig, DataDog)Professional experience with Java Spring Boot servicesUnderstanding of build / deploy automationFor this role, you'll find success through craft expertise, a collaborative spirit, and decision-making that prioritizes your fellow Rioters, who are the customers of your work. Being a dedicated fan of games is not necessary for this position!Our Perks:Riot focuses on work/life balance, shown by our open paid time off policy and other perks such as flexible work schedules. We offer medical, dental, and life insurance, parental leave for you, your spouse/domestic partner, and children, and a 401k with company match. Check out our benefits pages for more information.At Riot Games, we put players first. That mission drives every decision in our quest to create games and experiences that make it better to be a player. Whether you’re working directly on a new player-facing experience or you’re supporting the company as a whole, everyone at Riot is part of our mission. And just like in our games, we’re better when we work together. Our goal is to create collaborative teams where you are empowered to bring your unique perspective everyday. If that sounds like the kind of place you want to work, we’re looking forward to your application.It’s our policy to provide equal employment opportunity for all applicants and members of Riot Games, Inc. Riot Games makes reasonable accommodations for handicapped and disabled Rioters and does not unlawfully discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, handicap, veteran status, marital status, criminal history, or any other category protected by applicable federal and state law. We consider for employment all qualified applicants, including those with criminal histories, in a manner consistent with applicable federal, state and local law, including the California Fair Chance Act, the City of Los Angeles Fair Chance Initiative for Hiring Ordinance, the Los Angeles County Fair Chance Ordinance for Employers, the San Francisco Fair Chance Ordinance, and the Washington Fair Chance Act.Per the Los Angeles County Fair Chance Ordinance, the following core duties may create a basis for disqualifying candidates with relevant criminal histories:Safeguarding confidential and sensitive Company data Communication with others, including Rioters and third parties such as vendors, and/or players, including minorsAccessing Company assets, secure digital systems, and networksEnsuring a safe interactive environment for players and other RiotersThese duties are directly related to essential operations, safety, trust, and compliance obligations within our organization. Please note that job duties may evolve based on business needs and additional responsibilities may be assigned as necessary to maintain operational efficiency and security.