Develop and stably operate the zeta service backend handling hundreds of thousands of daily active users at game-server-level traffic
Design scalable and flexible backend architecture to support continuous user base growth
Build monitoring systems enabling rapid incident detection and response
What they want
3+ years of experience operating Spring (Kotlin or Java) services,or equivalent knowledge depth
Experience designing and operating systems handling large-scale traffic
Solid computer science fundamentals in OS and networking
Nice to have
Experience developing async or non-blocking web applications
Experience operating AI-based services in production
Kubernetes and Istio infrastructure operation experience
Seoulstart's read
Visa tier (likely)
E-7 specialty / professional (likely)
Korean language
Native Korean fluency required
English friendliness
Medium: English JD, mixed-language workplace
Context
Backend engineering role supporting 100+ real-time GPUs for Scatter Lab's in-house LLM; traffic doubles monthly and the service sustains game-server-level load,providing direct exposure to high-scale AI serving infrastructure that is rare at Seoul startups.
This is Seoulstart's analysis of the public job description, not the employer's stated policy. Verify visa sponsorship, language requirements, and remote allowances directly with the recruiter.