The Senior Site Reliability Engineer (SRE) will serve as a senior technical contributor, responsible for advancing observability and operational maturity across hundreds of application teams. This is not a product deployment or configuration role. The SRE will work directly with application engineers and external infrastructure partners to implement distributed tracing, profiling, structured logging, and metrics collection strategies that support reliability at scale. This role requires strong software engineering fundamentals, deep knowledge of observability tooling, and the ability to work across a wide range of technology stacks and organizational boundaries. The ideal candidate is comfortable with high ambiguity, varied application environments, and time-sensitive incident response involving external stakeholders.