• Architect and implement microservices, APIs, and scalable server infrastructures supporting millions of concurrent users. • Design for high availability, fault tolerance, and low latency. • Write clean, efficient, and secure code (primarily C# and Go, plus Java or similar). • Optimize performance, conduct rigorous testing, and implement monitoring/logging. • Leverage AWS, GCP, or Azure for scalable deployments. • Develop auto-scaling, load-balancing, and disaster-recovery strategies. • Partner with designers and engineers to integrate gameplay features (events, leaderboards, live-ops) with backend services. • Mentor junior engineers, review code, and champion best practices. • Implement robust security measures to protect player data. • Ensure data consistency across distributed systems using SQL and NoSQL solutions. • Stay current with industry trends. • Lead post-mortems and implement preventative improvements.