Senior Site Reliability Engineer (SRE)

UJET is seeking a Senior Site Reliability Engineer to build and scale the SRE function. The role involves leading efforts to improve system reliability, scalability, and performance, defining SLIs/SLOs, designing observability systems, leading incident response, conducting postmortems, eliminating toil through automation, partnering with teams on architecture, and mentoring engineers. The position is based in Seoul, Korea and requires South Korean citizenship or residency.

Must be a South Korean citizen or currently reside in South Korea with a valid work visa. 6-10+ years of experience in SRE, infrastructure, or backend systems engineering. Demonstrated experience owning reliability outcomes for complex distributed systems. Strong experience with cloud infrastructure (AWS, GCP, or Azure) and production-scale systems. Deep understanding of observability, incident management, and system performance. Proficiency in at least one programming language (Go, Python, Java