Senior Network Engineer

Key Responsibilities
Network Administration and Operations
Administer LAN, WAN, SD-WAN, Internet, Wi-Fi, and DC/DR networks.
Administer routers, switches, and assigned firewall, VPN, load balancer, and NAC components.
Manage IP addressing, VLANs, routing, QoS, network segmentation, and connectivity configurations between systems.
Operate connectivity to internal bank units, service providers, and payment/business partners.
Monitor bandwidth, latency, jitter, packet loss, and device status; proactively detect deterioration in connection quality.
Manage configuration backups, software versions, patches, and network device lifecycles.
Monitor carrier service quality and SLAs; coordinate the resolution of network circuit incidents.
Incident Management and Service Continuity
Serve as the focal point for resolving complex network incidents, connectivity outages, routing failures, and performance degradation.
Analyze packet captures, logs, routing tables, and connection session information to identify root causes.
Coordinate with system, application, and information security teams, carriers, and partners to resolve incidents across end-to-end transaction flows.
Design, operate, and test redundancy mechanisms for devices and network circuits, as well as DC/DR connectivity failover.
Prepare root cause analysis (RCA), recommend improvements, and track preventive actions to avoid recurrence.
Participate in on-call operations, incident resolution, and after-hours changes as assigned.
Project Design and Implementation
Assess requirements and the current environment, and propose network architectures that meet business, security, and scalability needs.
Lead the technical work or participate in DC/DR network, SD-WAN, Wi-Fi, NAC, and partner connectivity projects.
Develop or review HLD/LLD documents, physical and logical diagrams, connectivity flows, and access matrices.
Develop implementation, testing, migration, and rollback plans; assess impact before making changes.
Evaluate vendor solutions for redundancy, performance, compatibility, operability, and total cost.
Automate configuration backups, status checks, and configuration drift detection.
Benefit
Competitive salary and benefits
Working time: 8:30AM - 05:30PM, Monday - Friday;
12 days of annual leave + 3 days of sick leave + 1 day of birthday per year
Participated in social insurance, unemployment insurance, health insurance and full policies according to the labor law;
13th month salary & bonus policies, allowances at the Company;
UNIT-Care health care insurance by level;
Salary increases according to company regulations or unexpected salary raise in case of outstanding ability;
Professional and dynamic working environment, unlimited promotion opportunities;
Opportunity to participate in many large projects in Vietnam & abroad;
Work on the latest technology platform;
Join in company trip, teambuilding & community activities