Principal Software Engineer (Computer Vision / Automation)

Riot engineers bring deep knowledge of specific technical areas but also value the opportunity to work in a variety of broader domains. As a Software Engineer, you’ll work with both new and current technology, creating innovative solutions to overcome high-volume obstacles and to deliver player value. As a Principal Software Engineer on the League of Legends Quality Team, you will define and drive the technical vision for our core automation frameworks, ensuring the highest standards of quality across the League of Legends ecosystem. Your work will empower engineers across multiple initiatives—ranging from gameplay mechanics to skin development—by providing reliable, scalable frameworks that support efficient and robust testing practices. In this role, youll report directly to the Engineering Manager and play a key leadership role in cross-team collaboration. You’ll work closely with engineers and QA across Riot to align on quality frameworks and workflows, elevate the developer experience, and improve the overall quality of our products. We primarily use C++ for game and tooling logic, and Python to drive our test automation and validation systems. This role is based in Los Angeles. Responsibilities :

• Collaboration with diverse teams to ensure features accomplish expectations from multiple dimensions (code quality, extensibility, modularity, scalability, security, operational concerns, and industry standards / trends)
• Work and align with different partners that span across multiple teams to ensure were delivering awesome features to excite them
• Setting the tone for, contributing to, and defining technical discussions / designs that your team is accountable for
• Mentorship. You help Rioters develop the tools and creative atmosphere to shine, but ultimately hold them accountable for making smart calls and delivering player value
• Participate in the teams support rotation Required Qualifications :
• 8 years of deep hands-on experiences with compiled programming languages (C / C++, Java, Go, or C#)
• 4 years experience utilizing computer vision in support of automation tests
• 3 years experience with C / C++ that spans various use-cases and platform
• Extensive experience leveraging machine learning, AI, and functional testing techniques to enhance automated testing workflows, enabling smarter test case prioritization, anomaly detection, and adaptive regression coverage across complex game systems.
• Have been responsible for driving value through leading the development of organization-sized efforts (one year scope), including requirements gathering, planning, testing, and release or deployment
• Championed software development best practices within your organization that includes design / code reviews, coding standards, source control management, testing, delivery performance, scalability, and maintainability
• You have a strong history of mentoring others in both soft and hard skills For this role, youll find success through craft expertise, a collaborative spirit, and decision-making that prioritizes the delight of players. We will be looking at your past studies, experience, and your personal relationship with games. If you embody player empathy and care about players experiences, this could be your role!aa415a4b-8b21-40fc-a65c-70d2b25ca29a