وظيفة مهندس DDI - DNS, DHCP & IPAM لدى SIGMA في الرياض

Job Summary

We are looking for a Mid-Level DDI Engineer to support the operation, configuration, troubleshooting, and maintenance of enterprise DNS, DHCP, and IP Address Management (IPAM) services within a banking environment.

The engineer will be responsible for day-to-day DDI operations, incident resolution, performance monitoring, configuration changes, and maintaining a secure and reliable DDI environment.

Key Responsibilities

- Manage and support enterprise DNS, DHCP, and IPAM services.
- Configure and maintain DNS zones, records, forwarders, and DNS services.
- Configure and manage DHCP scopes, reservations, options, and leases.
- Perform IP address allocation, subnet management, and IPAM administration.
- Troubleshoot DNS resolution, DHCP, IP conflicts, and network addressing issues.
- Monitor DDI services for availability, performance, and capacity.
- Perform routine configuration changes, upgrades, and maintenance activities.
- Support high-availability and redundancy configurations.
- Investigate incidents and perform basic root-cause analysis.
- Resolve technical issues according to agreed SLA requirements.
- Maintain accurate DDI configuration and operational documentation.
- Coordinate with Network, Security, Infrastructure, and Application teams when required.
- Follow ITIL-based incident, change, and problem-management processes.
- Apply security and configuration best practices across the DDI environment.
- Support DDI migration, implementation, and integration activities when required.
- Provide regular operational and incident reports to the technical management team.

Required Technical Skills

- 3-5 years of experience in Network / Infrastructure Engineering.
- Hands-on experience with DNS and DHCP administration.
- Practical knowledge of IP Address Management (IPAM).
- Good understanding of:
- TCP/IP
- IPv4 / IPv6
- Subnetting
- VLANs
- Routing fundamentals
- DNS architecture
- DHCP architecture
- Good troubleshooting and incident-resolution skills.
- Experience with enterprise network/infrastructure environments.
- Knowledge of DNS/DHCP security and best practices.
- Experience with monitoring and ticketing systems.

Preferred Skills

- Experience with Infoblox, BlueCat, EfficientIP, or another enterprise DDI platform.
- Experience with Microsoft DNS/DHCP.
- Knowledge of Active Directory and DNS integration.
- Basic PowerShell or Python scripting.
- Previous experience in banking, financial services, telecom, or other large enterprise environments.
- Experience working in an onsite/client-facing support role.

Education & Certifications

- Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field.
- CCNA/CCNP or equivalent networking certification is preferred.
- DDI vendor certification such as Infoblox or BlueCat is an advantage but not mandatory.

Candidate Profile

The ideal candidate should be a hands-on engineer who can independently handle day-to-day DNS, DHCP, and IPAM operations, troubleshoot incidents, perform configuration changes, and coordinate with other infrastructure teams.

The role does not require an architect-level profile; strong practical DDI operational experience and troubleshooting capability are the primary requirements.