Senior Network Engineer, GreenNode

Role Overview Participate in network operations and development for GreenNode Data Center. Collaborate with team members to manage, maintain, and deploy/enhance network techniques to meet product requirements. Monitor and supervise network to detect and resolve incidents during operations. Prepare deployment, analisys reports and draft comprehensive system documentation. Design, deploy, optimize, and manage large-scale Network and Data Center infrastructure projects.

Key Responsibilities Data Center Design & Deployment: Design, plan, and scale Network architecture and resources for Data Center clusters, ensuring high availability, scalability, stringent security standards, and traffic flow optimization. AI Network Infrastructure Operations: Support the planning process and actively participate in the design, deployment, and maintenance of network infrastructure for AI Data Centers. Engage in major projects related to building AI infrastructure. Multi-Vendor Equipment Administration: Directly configure, optimize, and maintain the network equipment ecosystem across the Data Center, including Core/Edge Routers, Spine/Leaf Switches, and Next-Gen Firewalls from various vendors. Network Management: Manage IP planning, ASN allocation, and complex BGP architectures. Design traffic engineering policies and control traffic flow within the Data Center environment. Network Automation: Utilize Infrastructure as Code (IaC) to automate configuration deployment and device monitoring. Write scripts and build automated configuration management tools to standardize infrastructure, reducing deployment and troubleshooting time. L1-L4 Troubleshooting: Analyze, isolate, and resolve complex network incidents across Layer 1 to Layer 4. Escalation Point: Act as the primary contact and coordinate with team members to support the resolution of critical and emergency network incidents on a 24/7 basis.

Qualifications Bachelor's degree in Information Technology, Telecommunications, or a related field (a major in Computer Networks and Data Communications is a strong plus). Candidates holding professional certifications such as CCNP, CCNP-DC, CCDP, JNCIS-ENT, JNCIP-DC, or JNCIP-SEC are highly preferred.

Technical Expertise (Knowledge) In-depth knowledge of routing and switching protocols: OSPF, OSPFv3, BGP, VLAN, EVPN, VXLAN, MLAG, Routing policies and related Data Center Networking technologies. In-depth knowledge of building and implementing IP Fabric network. Security: Solid understanding of network security, network operation procedures and standards. Strong proficiency with Next-Gen Firewalls. Strong grasp of essential AI Network technologies: RDMA over Converged Ethernet (RoCEv2), InfiniBand, QoS, and load-balancing techniques. Knowledge of Cloud networking is an advantage. Understanding of the hardware architecture of high-end network equipment. Working knowledge of Python scripts, YAML, XML, Infrastructure as a Code (Ansible, Terraform) are highly preferred. Working knowledge of AI agent, AI models, AI tools, MCP are preferred.

Skills Excellent communication and presentation skills in both English and Vietnamese. Strong teamwork and collaboration, automation mindset. Proactive, agile, and eager to learn new networking technologies and knowledge to meet operational or business demands. Disciplined, honest, and detail-oriented.

Experience Minimum of 4 to 5 years of working experience in a similar role. Proven experience in handling major switching, routing, and hardware incidents with cross-service impact. Hands-on experience designing or operating large-scale networks utilizing high-end equipment. Experience of working in/with ISP or Data Center services.

Others Willingness to travel for business or work on-call/shift schedules as required.