Senior System Engineer

Your tasks

• System Administration and Operations
• Administer physical servers, virtualization platforms, Windows Server/Linux operating systems, and shared infrastructure services such as Active Directory, DNS, DHCP, and NTP.
• Administer SAN/NAS storage systems, SAN connectivity, capacity allocation, and redundant storage access paths.
• Administer backup and recovery platforms; monitor backup results, troubleshoot failures, and conduct regular recovery tests.
• Administer Microsoft 365 and email services, and manage endpoint devices within the assigned scope.
• Monitor system resources, performance, and health; analyze usage trends, forecast demand, and recommend capacity expansion.
• Apply patches, perform system hardening, and manage configurations in accordance with approved standards.
• Incident Management and Service Continuity
• Serve as the focal point for complex incidents involving servers, operating systems, virtualization, storage, and backup.
• Analyze logs, performance metrics, and events to identify root causes; prepare RCA reports and implement preventive measures.
• Coordinate with DBAs, application teams, information security teams, and vendors to resolve incidents involving multiple components.
• Develop, update, and test HA/DR plans and system failover and recovery procedures in line with approved RTO/RPO targets.
• 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 infrastructure architecture and sizing for new or upgraded systems.
• Lead the technical work or participate in server, storage, virtualization, backup, DC/DR, and infrastructure service projects.
• Develop or review design documentation and implementation, testing, migration, and rollback plans.
• Evaluate vendor solutions for integration, performance, HA/DR, operability, lifecycle, and total cost.
• Automate administration, checking, and reporting tasks using suitable tools or scripts.

Requirements

• Required
• Bachelor’s degree in Information Technology, Computer Science, or a related field.
• At least 5 years of experience in systems infrastructure administration, including hands-on operation of high-availability production environments.
• Hands-on experience with Windows Server, Linux, enterprise virtualization platforms, and Active Directory/DNS services.
• Experience administering SAN/NAS storage, backup/restore, and implementing or operating HA/DR.
• Ability to analyze CPU, RAM, disk I/O, and storage latency performance and identify bottlenecks.
• Ability to independently troubleshoot incidents, prepare RCA reports, and develop change and rollback plans.
• Ability to use PowerShell, Bash, or equivalent tools to automate tasks.
• Ability to read technical documentation in English and discuss technical matters with vendors.
• Preferred
• Experience in banking, finance, or 24/7 operations environments.
• Experience implementing or relocating DC/DR environments and upgrading infrastructure supporting critical databases and applications.
• Knowledge of infrastructure supporting Oracle RAC/ASM, storage mechanisms, and database backup coordination.
• Experience with Microsoft 365, Entra ID, Intune, and hybrid infrastructure environments.
• Relevant certifications in Linux, Microsoft, virtualization, storage/backup, or ITIL.Key Responsibilities

Skills: Requirements Analysis, UML, Software Documentation, Customer Service, Stakeholder Management, Microsoft Office, Teamwork, Business Analysis, System Analysis, SDLC

What we offer

• 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