Senior Linux & Network Administrator

9D Technologies is a leader in mobile app and game publishing, dedicated to creating innovative and captivating digital experiences for users around the globe. We strive to push the limits of creativity and technology by leveraging AI to deliver extraordinary entertainment. We are currently seeking a Senior Linux and Network Administrator to take full ownership of our production Linux servers and network services, including maintenance, new deployments, incident management, and ongoing research.

Key Responsibilities

- Manage the configuration and deployment of Linux network services, ensuring a reliable rollback strategy is in place.
- Take ownership of WireGuard, RADIUS (FreeRADIUS), LDAP, KanIDM, and Active Directory–style directory services, including management of groups, credentials, and replication processes.
- Design and implement Ansible automation for new hosts and services, while overseeing DNS, TLS, and firewall policies.
- Lead troubleshooting efforts for complex issues related to authentication, connectivity, or capacity when root causes are not immediately apparent.
- Oversee alerting systems, telemetry, and log/event review using tools such as Prometheus, Grafana, and syslog.
- Conduct vulnerability assessments across the server fleet and verify that remediation steps are effectively applied.
- Develop proofs of concept for new technologies or processes, recommend solutions for production deployment, and maintain up-to-date runbooks.

Required Qualifications

- Bachelor’s degree in Computer Science or a closely related discipline.
- 4 to 6 years of hands-on experience in Linux system administration and network operations, with demonstrated responsibility for production environment changes.
- Proven production experience with RADIUS and directory services such as KanIDM, LDAP, or Active Directory, along with expertise in WireGuard or comparable tunnel technologies.
- Strong skills in Ansible automation, monitoring solutions, and vulnerability remediation on Linux servers.

Preferred Qualifications and Benefits

While not explicitly listed, candidates with additional experience in advanced network security, cloud infrastructure, or AI-driven system management would be well-positioned to excel in this role.

We offer a competitive salary that reflects your skills and experience, along with comprehensive family health insurance coverage. Our team enjoys paid time off to ensure proper rest and work-life balance within a supportive work environment. To keep you energized, delicious meals are provided during work hours, and on-site fitness facilities are available to help you stay active.

Join 9D Technologies and contribute to shaping the future of digital entertainment through cutting-edge technology and creative innovation.