Job
Description
Job Title : Network Administrator - On-Premise Infrastructure & Security Location : Noida Office or at Client Site as Required Employment Type : Full-Time Experience Level : 5+ Years Job Summary: Seeking an experienced Network Administrator to architect, implement, and maintain our/client in-house infrastructure for a public-facing web application. The ideal candidate will be responsible for setting up secure, high-availability networks and server environments within our premises, ensuring robust security, scalability, and consistent uptime, while also adhering to industry-standard best practices. Key Responsibilities: Infrastructure Setup & Configuration: Design and implement a secure local network infrastructure including firewalls, switches, routers, and load balancers. Set up and maintain physical servers to host web applications, databases, and internal tools. Configure public DNS, NAT, port forwarding, and firewall rules to expose selected services securely to the internet. Setup and Manage web server environments (Apache, Nginx, IIS) and reverse proxies. Security Management: Implement and enforce physical and network security measures including perimeter firewalls, endpoint protection, SSL/TLS certificates, WAF, IDS/IPS, MFA and access control. Configure and monitor Intrusion Detection/Prevention Systems (IDS/IPS) and DLP solutions. Manage VPN gateways and secure remote access for internal users. Manage endpoint security, Conduct regular vulnerability assessments, patch management, and security audits. Implement access control policies using IAM (Identity and Access Management). Monitor for and respond to network security breaches or anomalies. Monitoring & Maintenance: Implement network and system monitoring tools (e.g., Zabbix, Prometheus, Grafana, CloudWatch). Set up infrastructure monitoring and alerting systems for servers, network devices, and application services. Regularly monitor bandwidth, latency, system logs, disk utilization, and hardware health. Ensure daily and periodic backups, test recovery processes, and maintain DR (Disaster Recovery) protocols. Ensure compliance with security audits, standards (e.g., ISO 27001, SOC 2), and data protection policies. Maintain system performance and plan for capacity upgrades as required. * Operational Support: Provide ongoing technical support for internal users and infrastructure services. Provide 24/7 support for mission-critical infrastructure components. Apply OS and firmware updates, antivirus definitions, and security patches in a timely manner. Create and maintain detailed documentation of infrastructure topology, configurations, and policies. Monitor compliance with internal IT and data protection policies. Analyze and optimize infrastructure for cost-efficiency and performance. * Required Skills and Experience: 5+ years of experience as a Network/System Administrator managing on-premise infrastructure. Proficiency in configuring and managing firewalls, routers, switches (e.g., Cisco, MikroTik, Fortinet, Ubiquiti). Strong experience with Windows/Linux server administration and network services (DNS, DHCP, FTP, SSH, SMTP). Solid understanding of TCP/IP, subnetting, routing, VLANs, and NAT. Expertise in setting up and managing local server rooms or data centers (power backup, physical security, ventilation, etc.). Experience with tools like Nagios, Zabbix, PRTG, or similar for infrastructure monitoring. Preferred Qualifications: Relevant certifications such as CCNA, CCNP, CompTIA Network+/Security+, or Red Hat Certified Engineer (RHCE). Experience with containerized deployments (Docker, Kubernetes) is a plus. Experience in public IP management and secure remote administration. Understanding of DevSecOps principles. Knowledge of data compliance standards (e.g., ISO 27001, GDPR) is a plus. What is on offer: Opportunity to own and lead the core infrastructure of a growing tech company. Exposure to enterprise-level network and security practices in a hands-on environment. A collaborative and innovation-driven work culture. Job Type: Full-time Pay: ₹500,000.00 - ₹1,000,000.00 per year Application Question(s): What is your notice period (in days)? What is your current annual salary (in INR)? What is your expected annual salary (in INR)? Experience: on premise infrastructure Network/System Admin: 5 years (Required) configuring and managing firewalls, routers, switches: 5 years (Required) Windows/Linux server administration: 5 years (Required) network services (DNS, DHCP, FTP, SSH, SMTP): 5 years (Required) TCP/IP, subnetting, routing, VLANs, and NAT: 5 years (Required) infrastructure monitoring tools: 5 years (Required) DevSecOps: 5 years (Required) License/Certification: CCNA, CCNP, CompTIA Network or RHCE (Required) Location: Noida, Uttar Pradesh (Required) Work Location: In person
