System Engineer (DNS / GSLB / SLB)

About the role

Manage the end-to-end implementation and delivery of DNS and load balancing projects, including requirement gathering, solution design, environment deployment, system integration testing, and acceptance, ensuring on-time, high-quality delivery. Provide daily technical support and maintenance for customer on-site DNS systems and load balancing equipment, ensuring production environment stability and high availability.

Key responsibilities

• Manage the end-to-end implementation and delivery of DNS and load balancing projects, including requirement gathering, solution design, environment deployment, system integration testing, and acceptance, ensuring on-time, high-quality delivery; coordinate resources to drive project progress
• Provide daily technical support and maintenance for customer on-site DNS systems and load balancing equipment, ensuring production environment stability and high availability
• Handle daily cases from acceptance to closure, using protocol analysis to quickly identify root causes and ensure efficient resolution
• Produce monthly service reports to review and summarize system performance
• Lead or participate in live network change activities; prepare high-quality change plans, detailed implementation steps, and emergency rollback procedures
• Author operation manuals, configuration guides, and standard operating procedures (SOPs) for fault handling

About you

• Associate degree or above (full-time) in Computer Science, Communication, or Networking
• Minimum 3 years of network operations experience with deep expertise in DNS and load balancing
• Proficient in GSLB (Global Server Load Balancing) principles and various application scenarios
• Skilled in configuring and operating mainstream load balancers (e.g., F5, A10, Citrix)
• In-depth understanding of Layer 4-7 load balancing
• Solid grasp of TCP/IP theory; familiar with routing and switching (OSPF/BGP) and network security technologies
• Proficient in protocol analysis tools such as Wireshark and Tcpdump; capable of fault localization, packet analysis, and independent troubleshooting in complex network environments
• Excellent cross-department communication and customer service skills
• Strong technical documentation ability, able to translate complex issues into clear operational guidelines
• Preferred: CCNP/HCNP or above, or F5 201/301 or higher vendor certifications