Linux & Network Administrator

9D Technologies is a leading publisher of mobile apps and games, dedicated to delivering innovative and engaging digital experiences to users around the world. Our mission is to push the boundaries of creativity and technology by leveraging AI to create captivating entertainment. We are currently seeking a skilled Linux and Network Administrator to join our team. This role involves maintaining production servers, configuring new hosts, and promptly resolving live operational issues to ensure seamless service delivery.

Key Responsibilities
- Maintain and configure Linux servers and network services using automation tools such as Ansible and containerization platforms like Docker.
- Manage and operate secure network protocols and directory services including WireGuard, RADIUS (FreeRADIUS), LDAP, KanIDM, and Active Directory–style services, handling accounts, groups, authentication, and replication.
- Configure and maintain DNS settings, TLS certificates, and host-based firewalls using iptables or nftables to secure network traffic.
- Troubleshoot and resolve issues related to authentication, connectivity, and service failures by analyzing logs, metrics, and system states.
- Monitor alerts and review system logs and events through tools such as Prometheus, Grafana, journald, and syslog to maintain system health and performance.
- Apply patches based on vulnerability assessments and verify that security gaps are effectively closed.
- Conduct proofs of concept for new configurations and document findings with concise reports to support continuous improvement.

Required Qualifications
- Bachelor’s degree in Computer Science or a closely related discipline.
- Between 2 to 4 years of professional experience in Linux system administration and network operations.
- Practical experience working with at least two of the following technologies: WireGuard, RADIUS, LDAP, KanIDM, Active Directory, Ansible, or Docker.

Preferred Qualifications and Benefits
We offer a competitive salary that reflects your skills and experience, along with comprehensive family health insurance coverage. Our company values work-life balance and provides paid time off to help you recharge. Employees enjoy a supportive work environment, delicious meals on-site, and access to convenient fitness facilities to stay active and healthy.

If you are passionate about Linux systems and network administration and want to contribute to a dynamic team at the cutting edge of mobile technology, 9D Technologies is the place to grow your career.