10+ years of experience in performance engineering or a related field Expertise with profiling tools for browsers and NodeJS Deep knowledge of performance metrics, reporting, and analysis across the full stack Strong analytical skills with the ability to interpret metrics, logs, and load test results Advanced understanding of web/mobile architectures, HTTP protocols, caching, databases, and load balancing Proven problem-solving skills and a passion for optimizing client experiences Experience optimizing SQL and databases Fluency in data structure and algorithm optimization