Senior Staff DevOps Engineer

Sonatus builds the software platform for AI-enabled, software-defined vehicles. Our Korea engineering site is responsible for critical product delivery to major automotive OEMs — it generates 30% of company revenue and operates dedicated build infrastructure, lab hardware, and test environments that must run reliably on-premises. We are seeking a Staff DevOps Engineer based in Seoul to own and modernize the Korea site's on-premises infrastructure: bare-metal Jenkins build servers, enterprise storage, lab networking, and the automation that ties CI/CD pipelines to physical test hardware. This is a hands-on engineering role where you will be the primary infrastructure owner for the Korea site, working closely with the global Engineering Operations team (Sunnyvale, Dublin) to bring consistency and modern practices to a critical production environment.

Responsibilities

Own the Korea Jenkins controller and physical build agents. Manage capacity planning, server health, and reliability for the bare-metal servers that produce ECU firmware builds. Coordinate AWS overflow capacity when on-prem resources are constrained; Own the integration between CI/CD pipelines and physical test hardware (ECUs, evaluation boards). Support board provisioning, health monitoring, and the automation that connects builds to hardware test execution. Work with QA engineers to ensure test environments are reliable and reproducible; Bring up and operate Pure Storage (FlashArray) for build workspaces, artifact caching, and test output. Own the NFS layer and multi-site replication between Korea, Sunnyvale, and Dublin. Document and stabilize storage infrastructure that currently has single-person dependencies; Lead the migration from manual server configuration to codified infrastructure. Terraform for provisioning, Ansible for configuration management. The Korea site currently has zero IaC — you will design the target state and execute the migration without disrupting active builds; Maintain and improve the Korea release automation pipelines (Jenkins shared libraries, Groovy-based release workflows). Partner with the global CI/CD team on consolidation and standardization efforts while ensuring Korea-specific build and release requirements are met; Deploy monitoring (Nagios, Prometheus/Grafana, or equivalent) for all Korea on-prem infrastructure: build servers, storage arrays, network equipment, and lab hardware. Replace the current model of "someone notices it's broken" with proactive alerting and dashboards; Own the physical environment for the Korea server room: coordinate with facilities on power and cooling constraints, manage rack layouts, and plan capacity for future hardware deployments

Requirements

15+ years in infrastructure, DevOps, or SRE roles, with significant time managing on-premises and bare-metal infrastructure — not exclusively cloud-native environments; Linux systems administration — You debug production servers over SSH daily: networking, storage, process management, systemd, log analysis; On-premises infrastructure — Hands-on experience with physical servers, rack management, storage arrays (NFS/SAN), and datacenter operations including power, cooling, and capacity planning; CI/CD platform administration — Experience operating Jenkins at scale (distributed agents, shared libraries, credential management) or equivalent enterprise CI/CD platform; Infrastructure as Code — Practical experience with Terraform and Ansible (or equivalent). You've migrated environments from manual to codified, not just maintained existing IaC; Networking — Working knowledge of VLANs, DNS, VPN/site-to-site connectivity, and how lab networks integrate with cloud environments; Scripting and automation — Proficiency in Python and Bash. Comfortable working in large Groovy codebases; Storage administration — Experience with enterprise storage (Pure Storage, NetApp, or similar), NFS configuration, and backup/replication strategies

Nice to have

Embedded systems build toolchains (Bazel, Yocto, CMake cross-compilation); Virtualization technologies (VMware vSphere, KVM); Hardware-in-the-loop or automotive test infrastructure experience; Security scanning integration (Coverity, BlackDuck, or similar SAST/SCA tools); Experience with Kubernetes in hybrid on-prem/cloud environments; Korean language proficiency (business conducted in both Korean and English)