Machine Learning Engineer

At Riot Games, our engineers possess a profound expertise in their respective technical domains while thriving on the opportunity to explore a diverse array of projects. As a Staff Software Engineer, you will engage in initiatives that promote team synergy and collaborative goals across various teams. You will lead by influence, exemplifying exceptional engineering practices for your peers. Your mission will be to facilitate the production deployment of machine learning solutions globally for Riot Games. By employing contemporary MLOps methodologies, you will enhance deployment processes, simplify operational tasks, and establish robust infrastructures that empower data scientists, ML engineers, and product teams to deliver impactful results swiftly and with assurance. In this role, you will architect and execute strategies for model deployment, monitoring, and lifecycle management. You will be instrumental in creating vital infrastructures that support diverse AI/ML applications, such as model orchestration, feature stores, and vector databases. Your contributions will facilitate the adoption and operational efficiency of ML and AI across Riot, enabling our game and platform teams to implement high-impact machine learning solutions effectively.

Riot Games is seeking a Senior Manager of Machine Learning Engineering to join the Game Tech Group, focusing on AI Foundations. This role is based in either Los Angeles, CA or Mercer Island, WA. Role overview This leadership position centers on guiding a team of engineers as they develop and refine machine learning technologies for gaming. The work aims to enhance player experiences and advance AI capabilities within Riot’s products. What you will do Lead and mentor a team dedicated to building machine learning systems for games. Shape project direction to advance AI within the gaming space. Supervise the optimization and deployment of AI systems across multiple products. Foster a collaborative atmosphere that values high-quality work and creative problem-solving. Location This position is available in Los Angeles, CA or Mercer Island, WA.

StubHub connects fans to live events, making ticket buying and selling straightforward and secure for millions worldwide. Whether someone is attending their first show or managing tickets for a stadium tour, StubHub aims to deliver a smooth, safe experience from search to entry. Role Overview The Staff Software Engineer - Supply Platform will help shape how users and sellers interact with live events on a global scale. This role involves designing and building new technologies and features that improve the platform’s reach and reliability. Staff Engineers at StubHub contribute to both commercial and product strategies, balancing user needs with sound business decisions. Leadership and mentorship are key expectations, as is a proactive approach to solving complex challenges within an inclusive team. Work Location This position follows a hybrid schedule: three days per week onsite and two days remote. Offices are in Aliso Viejo, CA or Century City, CA. About the Supply Platform Team The Supply Platform team manages seller ticket inventory at StubHub. The group’s focus is on making processes faster and more efficient, primarily through automation and accessible APIs. Responsibilities include maintaining services that keep ticket listings current, prevent fraud, and ensure compliance with local laws. The goal is to provide sellers and buyers with a reliable, hassle-free experience.

At Riot Games, our engineers dedicated to Anti-Cheat are innovators and champions of competitive fairness. We safeguard the integrity of our multiplayer experiences by creating resilient platforms, developing advanced internal tools, and proactively addressing adversarial threats while prioritizing player enjoyment.As a Senior Staff Software Engineer on the Vanguard Platform Services team, you will work at the vital crossroads of platform services, internal development tools, and ecosystem design. Your role will involve supporting a platform that caters to millions of players, enhancing internal tools utilized by hundreds of Player Support agents, and pioneering cutting-edge technologies to thwart, identify, and deter cheaters from entering our games. This role is hands-on, ideal for engineers who are eager to engage deeply and construct services in a dynamic and innovative environment. You will leverage your technical expertise and interpersonal skills to guide the team's direction through code and a strong commitment to understanding and enhancing the product. Collaboration will be key as you partner with engineers, stakeholders, and anti-cheat specialists across the entire Vanguard framework to create efficient and impactful tools and services that support our players. This position reports to the Engineering Manager of Platform Services within the Anti-Cheat division.

At Raya, we foster a culture of continuous learning and collaboration, empowering our team members to tackle significant challenges and evolve into their best selves. We are seeking a passionate Senior Machine Learning Engineer who is eager to enhance our machine learning, AI, and advanced algorithm applications to elevate the user experience. Our ideal candidate aligns with Raya's mission to enrich lives through meaningful, in-person connections.We provide extensive medical and dental benefits, a daily food delivery budget of $50, equity opportunities, a vibrant workplace culture, professional development prospects, unlimited vacation, 12 weeks of paid parental leave, and an annual $1,000 travel stipend to encourage exploration and foster the values of human connection, empathy, and curiosity.

As a Senior Manager of Machine Learning Engineering within the Anti-Cheat division at Riot Games, you will be at the forefront of combating unfair play. Our engineering managers are not only technical leaders but also champions of their teams, fostering an inclusive and growth-oriented environment. Your role will involve making informed architectural choices and ensuring that the quality of technical decisions enhances our service to players.The Anti-Cheat team is pivotal in safeguarding the integrity of our games against cheaters. Comprising a diverse group of experts—ranging from former cheaters to machine learning engineers—we develop innovative solutions like Vanguard to detect and eliminate unfair players across all titles and platforms. In your capacity as Senior Manager, you will lead multiple teams, including Data Analytics, Data Engineering, and Machine Learning Engineering, to operationally support and advance our anti-cheat initiatives.You will be responsible for setting the strategic direction of your teams, optimizing their structure for success, and ensuring alignment with game development teams. Your contributions will be crucial in translating product objectives into actionable technical strategies and in fostering collaboration across departments. Your success will be evaluated through the fairness of our competitive ladders and the effectiveness of anti-cheat measures.

Join Riot Games as a Staff Software Engineer, where you will leverage your extensive technical knowledge to contribute to the League of Legends. In this role, you will work collaboratively with your engineering team to empower developers in creating engaging around-game experiences that captivate both new and veteran players. You will report directly to the Engineering Manager and operate in a hybrid work environment from our Los Angeles office.

Join Crunchyroll as a Senior Machine Learning Engineer focusing on Recommendation and Personalization. In this key role, you will leverage cutting-edge machine learning techniques to enhance user experiences through personalized content recommendations. Your expertise will directly contribute to our mission of connecting anime fans with their favorite content.

Riot Games is hiring a Senior Software Engineer for the Riot Mobile team in Los Angeles. This team builds and maintains the mobile platform that connects millions of players to the broader Riot ecosystem. Riot Mobile serves as a daily companion app, offering personalized updates, patch notes, esports content, and social features such as cross-platform chat and coordination with friends. The platform links in-game and out-of-game experiences, helping players stay engaged beyond PC or console gaming. Key Responsibilities Design and scale mobile systems for millions of users on both iOS and Android platforms. Develop features focused on personalization, social connectivity, and cross-game interactions. Lead and deliver technical projects that span several months, managing them from planning to launch. Collaborate with product managers, designers, and engineers to solve complex technical problems. Make important architectural and technical decisions to enhance platform quality and ensure long-term stability. Tech Stack Native mobile development (iOS and Android) Kotlin Multiplatform (KMP) Riot APIs AWS Lambdas React (for select features) Embedded multimedia and live streaming Spring Boot (for smaller services) Riot's internal SDK How the Team Works Senior Software Engineers at Riot contribute deep technical knowledge while working across a variety of projects. The role involves close collaboration with cross-functional partners to introduce new features, address high-volume technical challenges, and improve player satisfaction through thoughtful engineering decisions.

At Riot Games, our engineers possess extensive expertise in specific technical areas and appreciate the chance to engage across a wider spectrum of domains. We leverage both emerging and established technologies to craft innovative solutions that address complex, large-scale challenges and enhance player experiences. As a Principal Software Engineer and Tech Lead for a groundbreaking R&D project, you will be at the forefront of developing the technical underpinnings for one of Riot's most thrilling new games. You will collaborate closely with a talented mix of engineers, quality assurance specialists, artists, and designers to ensure the game aligns with our team's development objectives, creative aspirations, and quality benchmarks across multiple platforms. In this dynamic role, you'll be actively involved in architecting core game features, assessing current and emerging technologies, guiding the efforts of fellow engineers, and troubleshooting some of the game's foundational systems. You will have the opportunity to utilize cutting-edge technology while exploring innovative solutions that will captivate our players as we bring this new gaming experience to fruition. You will report to the Senior Engineering Manager of the Tech Foundations team and collaborate with them to lead a team of 8-10 engineers focusing on engine, tools, build, rendering, and console functionalities.

Riot Games is at the forefront of creating captivating player experiences through data-driven insights. As a Principal Machine Learning Engineer on the Publishing Platform Data team, you will spearhead the design and implementation of the modeling architecture that enhances personalization, matchmaking, and social interactions within our expansive player community. Collaborating closely with Product, Data Engineering, and Software Engineering teams, you will leverage extensive datasets to develop adaptive AI systems that ensure meaningful connections and equitable gaming experiences.

Genies seeks a Senior Machine Learning Engineer specializing in Animation Modeling to join its Los Angeles team. This role centers on developing and refining machine learning models that power animated digital avatars. Role overview The position focuses on advancing the technology behind avatar animation, directly influencing how users engage with and experience avatars across various platforms. The work involves both building new models and improving existing ones to enhance realism, responsiveness, and interactivity. Location This role is based in Genies' Los Angeles office.

Join our innovative Match Team as a Senior Machine Learning Engineer at Enigmaio, where you will play a pivotal role in developing advanced algorithms and models that enhance our matching capabilities. You will collaborate with cross-functional teams to design, implement, and optimize machine learning solutions that drive business outcomes.

ABOUT CIM GROUP:CIM Group is a visionary real estate and infrastructure company dedicated to enhancing communities through thoughtful investment and development. Established in 1994, our founders have successfully transformed neighborhoods in Southern California, and today, we boast a diverse team of over 900 professionals working on projects across the Americas. Our commitment to delivering sustainable infrastructure and creating vibrant living environments is at the core of our mission. Join us at CIM Group and contribute to making a meaningful impact in the communities we serve.POSITION PURPOSE:As the Senior Machine Learning Operations Engineer, you will spearhead the design and management of secure, scalable infrastructure for machine learning model deployment and lifecycle management. This pivotal role focuses on building and optimizing the firm's ML Ops platform on Databricks, with a strategic emphasis on productionizing Generative AI and Large Language Model (LLM) solutions, including Retrieval-Augmented Generation (RAG) systems and vector database implementations.You will ensure the seamless transition of models from development to production, adhering to regulatory and compliance standards. Collaborating with Data Science, Platform Engineering, Information Architecture, and various business verticals (such as Fund Accounting, Investor Relations, and Investments), you will drive ML insights, improve model accuracy, and manage the ML/AI ecosystem effectively.Beyond technical responsibilities, you will define the ML Ops strategy and architecture, tackling the final hurdles of AI value realization by automating and scaling ML models and Generative AI applications as essential business assets. Your leadership will enhance operational efficiency, improve model accuracy, accelerate time-to-market for AI solutions, and ensure robust governance of machine learning and generative AI initiatives.

At Riot Games, our engineers possess not only deep expertise in their specific technical fields, but they also appreciate the chance to explore a wide array of broader domains. As a Staff Software Engineer in Tools, you will spearhead vital technical projects and exemplify outstanding engineering practices to your fellow engineers. We utilize both cutting-edge and established technologies to craft innovative solutions that tackle high-volume challenges while delivering exceptional value to our players. In this role as a Staff Software Engineer, Tools on a groundbreaking R&D product, you will design and develop the core components of the tools ecosystem for one of Riot's most thrilling upcoming titles. Collaborating closely with designers, artists, producers, and fellow engineers, you will gather requirements and establish a long-term vision for the developer tooling. Your responsibilities will include hands-on involvement in conceptualizing, planning, implementing, and maintaining the tools that enhance content creation workflows and boost developer efficiency. You will engage with state-of-the-art technology and seek innovative solutions that will surprise and delight our players as we bring this new game to life. You will report directly to the Director of Software Engineering within the team.

Join Riot Games as a Technical Producer II in our League Studio, where you'll lead dynamic technical teams dedicated to enhancing developer and player experiences. Your role will involve steering the Game Machine Learning team—a collective of data scientists focused on machine learning initiatives and data-driven products for League of Legends and Teamfight Tactics. Collaborating closely with Product and Machine Learning Engineering Leads, you’ll be pivotal in the development of systems such as matchmaking, recommendation engines, and personalization features. In this capacity, you will set clear team objectives, manage daily operations, and uphold effective delivery processes while fostering a sustainable and collaborative work environment. Your oversight will ensure that projects are executed smoothly, maintaining alignment with broader business goals and providing leadership with visibility into complex deliverables. Reporting directly to the Manager of Technical Production, your contributions will be integral to the team's continuous improvement and success.

At Riot Games, our engineers possess deep expertise in specific technical areas while embracing the chance to engage across a variety of broader domains. As a Staff Software Engineer in our Unreal Ecosystem (UnEco) team, you will contribute to projects that enhance team cohesion and align cross-team objectives.The UnEco team plays a pivotal role in shaping various aspects of game development, including gameplay features, runtime performance, tooling, and CI/CD processes, among others. As a Software Engineer III, you will establish organizational alignment by crafting a robust engineering vision and devising innovative solutions to technical challenges. You will also mentor engineers, helping identify growth opportunities and fostering the delivery of captivating player experiences.

Role overview Riot Games seeks a Staff Software Engineer to help develop the Riot Client Publishing Platform in Los Angeles. This platform serves as the main entry point for millions of players accessing games like League of Legends and VALORANT. The role centers on building and refining the software that allows players to discover, install, and interact with Riot’s titles. What you will do Enhance the Riot Client, with a focus on game distribution, content publishing, and social features. Lead projects that benefit both player-facing experiences and internal development teams. Foster a collaborative approach within the desktop software engineering group. Partner with colleagues to deliver features that improve how players access and enjoy Riot’s games. Impact This position has a direct effect on the experience of millions of players worldwide. The software built in this role also supports other game teams at Riot, helping them deliver new content and features more efficiently. Location This role is based in Los Angeles, USA.

Join Riot Games as a Staff Software Engineer specializing in Gameplay Meta for an exciting unpublished research & development project. This role calls for innovative thinkers who thrive in fast-paced environments and seek to push the boundaries of gaming technology. You will collaborate with a talented team to develop cutting-edge solutions that enhance gameplay experiences. Your expertise will be critical in shaping the future of interactive entertainment.