SmartDev is an AI-powered software development company headquartered in Vietnam, part of the Verysell Group. We help global businesses deliver faster and build smarter — combining AI-driven development practices with deep expertise across fintech, healthcare, retail, and enterprise technology. Our team of engineers, architects, and AI specialists works across the full stack: from custom software and cloud solutions to generative AI, MLOps, and intelligent automation. At SmartDev, we believe that great architecture and AI-first thinking are a competitive advantage — and we build our teams accordingly. 

The company is at a pivotal point in our journey: transitioning from a pure IT outsourcing provider to an AI-enabled solutions partner. 

We have over 100 talented employees working both on-site and remote/hybrid at locations: 

• Hanoi: Zodiac building, 19 Duy Tan Street, Dich Vong Hau ward, Cau Giay District, Hanoi 
• Danang: 81 Quang Trung, Hai Chau 1 ward, Hai Chau District, Danang

The Senior System Engineer is a key technical authority within SmartDev’s IT Infrastructure team. You will own the reliability, performance, and security of our systems - spanning on-premises hardware, cloud workloads, and the network fabric that connects them. You are the primary escalation point for complex incidents and a trusted partner to development and product teams.

System & Infrastructure Operations 

• Resolve and close incidents and service requests in line with help desk SLAs, acting as the first point of escalation for system-related issues. 
• Plan and execute hardware and software deployments, upgrades, and lifecycle maintenance. 
• Monitor system health, performance, and capacity; proactively address risks before they impact service. 
• Maintain scheduled data backups and validate restore procedures regularly. 

Network Administration 

• Administer and maintain wired and wireless network infrastructure, including LAN/WAN, load balancers, and firewall devices. 
• Run regular network and data-security assessments and act on findings promptly. 

Email Management 

• Administer Exchange Online and other mail services like Sendgrid; configure and maintain mail flow rules, connectors, and anti-spam/anti-phishing policies. 

Procurement & Vendor Coordination 

• Evaluate tools and vendors to recommend cost-effective, future-proof solutions. 

Continuous Improvement & Reporting 

• Identify and drive improvements to systems, tooling, and operational processes. 
• Produce and share clear, regular operational reports for stakeholders and leadership. 
• Maintain accurate technical documentation and runbooks.

• 4+ years as a System Administrator, with hands-on expertise in Linux/Windows environments. 

Technical Skills 

• Networking — LAN/WAN, load balancing, firewall configuration and management. 
• Virtualization — Xen, KVM, or VMware. 
• SaaS Administration — Microsoft 365 Global Admin and Jira/Confluence Admin. 
• IT Management Platforms — Endpoint Management, Endpoint Security (ManageEngine or equivalent ITSM/RMM tooling), including policy configuration, agent deployment, and antivirus/EDR policy, patch automation, software inventory & compliance 
• Web Services — Nginx, Apache, reverse proxy configuration. 
• Observability & Monitoring — Grafana, Prometheus, ELK Stack, or PRTG. 
• Scripting — Bash and/or PowerShell for automation and task management. 
• Email — MS Exchange Online / SendGrid 

Soft Skills & Other Requirements 

• Communicates clearly in English (reading, writing, speaking, and listening). 
• Able to produce concise technical documentation for varied audiences. 
• Strong analytical mindset with a bias towards proactive problem-solving. 

Nice to Have 

• Cloud platforms — AWS or Azure knowlegde and hands on 
• Containerisation — Docker and/or Kubernetes. 
• CI/CD pipelines — GitHub Actions, GitLab CI, Jenkins, or similar.

• International working environment with AI-driven strategic direction.
• 20 days of annual leave – Hybrid working mode.
• Premium healthcare package with PVI and comprehensive annual health check-ups
• Competitive salary & 13th salary bonus
• Lunch allowance to fuel your productivity.
• Engaging company culture with fun activities
• Global collaboration – Work with both Vietnamese and international colleagues.