System Admin Network Security

Job Opening ID

OTSI_2292_JOB

Date Opened

09/15/2025

Industry

Government/Military

Job Type

Contract

Work Experience

5+ years

Required Skills

switch

routers

+1

City

Mumbai , Kochi

State/Province

Chembur, Ambala mugal

Country

India

Zip/Postal Code

400008,682001

OTSI is a leading global technology company offering solutions, consulting, and managed services for businesses worldwide since 1999. OTSI serves clients from its 15 offices across 6 countries around the globe with a "Follow-the-Sun" model. Headquartered in Overland Park, Kansas, we have a strong presence in North America, Central America, and Asia-Pacific with a Global Delivery Center based in India. These strategic locations offer our customers the competitive advantages of onshore, nearshore, and offshore engagement and delivery options, with 24/7 support. OTSI works with 100+ enterprise customers, of which many are Fortune ranked, OTSI focuses on industry segments such as Banking, Financial Services & Insurance, Healthcare & Life Sciences, Energy & Utilities, Communications & Media Entertainment, Engineering & Telecom, Retail & Consumer Services, Hi-tech, Manufacturing, Engineering, transport logistics, Government, Defense & PSUs.

Our focused technologies are:

• Data & Analytics (Traditional EDW, BI, Big data, Data Engineering, Data Management, Data Modernization, Data Insights)
• Digital Transformation (Cloud Computing, Mobility, Micro Services, RPA, DevOps)
• QA & Automation (Manual Testing, Nonfunctional testing, Test Automation, Digital Testing)
• Enterprise Applications (SAP, Java Full stack, Microsoft, Custom Development)
• Disruptive Technologies (Edge Computing/IOT, Block Chain, AR/VR, Biometric)

Network & Security Administrator :

• 5+ years of experience in Network Administration and Maintenance including network design and switching &routing etc.
• One or more networking certifications: CCNA, CCNP,CCIE, etc., or its equivalent.
• Fundamental knowledge of networking concepts.
• Proficient in enterprise-level networking with knowledge of TCP/IP, Routing Protocols (OSPF and BGP, etc.),SMTP, and SNMP.
• Network engineering, network operations, and network
• performance analysis skills.
• Working experience with Cisco, HP Aruba, Citrix . SDWAN, and Fortinet technologies

Roles & Responsibilities :

• Administration and Configuration of Network Switches and Routers (CISCO/HP)
• Daily health monitoring of Network Switches, Wi-Fi devices, and Routers (Cisco/HPE/Arista) and ensure network system availability & reliability.
• Hardening of network & security devices and Configuration of network switches/routers / Wi-Fi devices/firewall backup and restore of network devices and firewall configuration email alerts and reports configuration for network devices and firewall
• Network monitoring of other IP-based devices like RFID sensors, CCTV, Access control, VC, Digital clock, smoke detection system, etc.
• Firewall policy configuration and traffic monitoring
• Performing network maintenance and system upgrades including service packs, patches, hotfixes, and security configuration.
• First-level call attending from users and taking appropriate action to resolve minor issues.
• Administration and Configuration of Network Switches, routers, Wi-Fi devices, and Firewalls (CISCO/HP/ Arista/Fortinet) Hardening of network & security devices and Configuration of network switches/routers / Wi-Fi devices/firewall backup and restoration of network devices and firewall configuration. Customized email alerts and reports configuration for network devices and firewall policy configuration and traffic monitoring Performing network maintenance and system upgrades including service packs, patches, firmware upgradation, hotfixes,and security configuration. Any major issues noticed are to be discussed with the Reporting or line manager before taking any action/decision Arrange repair for hardware in the occasion of hardware failure. Any major issues noticed are to be discussed with the Reporting or line manager before taking any action/decision.
• Arrange repair for hardware in occasion of hardware failure
• Support online/onsite on a need basis during extended hours.
• Coordination with Hardware vendor for troubleshooting of hardware-related issues by call logging/follow‐up/issue resolution.
• Create and maintain proper technical documentation of all issues/configurations etc.
• The System Administrator (Network & Security) shall need to go to the plant area and corporate data center where network infrastructure is located as and when required.
• Audit recommendation adherence, general cleanliness, coordinating with data center/Network team for issues relating to infrastructure/network facilities, etc. Hardware installation assistance coordination with hardware engineers.
• Performs any other infrastructure-related activities as and when required.
• Creates and maintains good technical documentation.