Dhanni Sandeep Kumar
Sr Network Engineer
Hyderabad
Summary
To work in challenging environment and be known for depth in knowledge, quality, hard work, timeliness of service, honoring the commitments and providing innovative solutions and enable organization to enhance their business.
IT professional with overall 9 years of experience excels at implementing and administering large network infrastructure, including, Routers and switches.
Overview
11
11
years of professional experience
3
3
Certifications
3
3
Languages
Work History
Sr. Network Engineer
Sify Digital Services Ltd
05.2022 - Current
- I am part of a NOC Team that is responsible for Network Support, maintenance, highly available network architectures that meet business objectives and SLAs.
- In this role, I have excellent problem-solving skills and thorough knowledge of network and Helpdesk architecture.
- Configure and install various network devices and services (e.g., routers, switches, VPN, IPSec VPN).
- Perform network maintenance and system upgrades.
- Monitor performance and ensure system availability and reliability.
- Monitor system Network resource utilization, trending, and capacity planning using various tools like NETIM, Vunet and App response.
- Provide Level-1/2 support and troubleshooting to resolve issues using Remedy ticketing tool.
- Work within established configuration and change management policies to ensure awareness, approval and success of changes made to the network infrastructure.
- Works helpdesk ticketing system to ensure SLAs and business objectives.
- Hands-on experience & deep knowledge of routing protocols like EIGRP, OSPF and Basic BGP in the enterprise environment.
- Good troubleshooting skills and identifying/locating the area of the problem.
- Detailed knowledge of the OSI model and switching technologies (STP, VLAN, VTP, HSRP, VRRP etc.).
- Routing and switching technologies and corresponding protocols.
- Knowledge of Network Monitoring Tools PRTG.
- Experience in DHCP and IP address Management.
- Hands-on experience & deep knowledge of routing protocols like OSPF in the enterprise environment.
- Develop and maintain functional and secure networks.
Specialist (Networking)
HCL Technologies Ltd
03.2021 - 05.2022
- Installation and setup of routers and switches.
- Responsible for troubleshooting of networking equipment across multiple sites.
- Managed the end-to-end lifecycle replacement of legacy Cisco Catalyst 2960 Series switches with high-performance Catalyst 9000 Series hardware to enhance campus-wide throughput and reliability.
- Executed seamless hardware migrations including stack configurations and physical cutovers, ensuring minimal downtime for critical business operations.x
- Optimized Layer 2 and Layer 3 switching environments by implementing Cisco IOS-XE features and transitioning from traditional base configurations to modern, scalable architectures.
- Integrated HP/Aruba ClearPass Policy Manager to enforce robust Network Access Control (NAC) across the switching fabric.
- Standardized MAC Authentication Bypass (MAB) and MAC Binding policies to secure endpoint connectivity and prevent unauthorized device access.
- Collaborated on the design of ClearPass service profiles, utilizing Aruba’s management tools to gain granular visibility into wired device profiling and health.
- Architected automated deployment pipelines using Ansible and Jenkins to streamline the configuration and provisioning of new Cisco 9000 switches.
- Developed Infrastructure as Code (IaC) playbooks to standardize VLAN assignments, interface descriptions, and security hardening across the enterprise network.
- Reduced manual configuration errors by 40% by implementing CI/CD workflows for network changes, allowing for version-controlled updates and automated validation testing.
Network Engineer
Akshara Enterprises India Pvt Ltd
06.2019 - 02.2021
- Responsible for troubleshooting of networking equipment across multiple sites.
- Configuration of VLAN ‘s in Switches.
- Good knowledge of OSI 7 Layer Model, TCP/IP, DNS, DHCP, TFTP.
- Server OS installation and Raid system implementing and enabling services.
- TSCAN, providing high-availability connectivity and 24/7 technical support for critical government departments and administrative blocks.
- Managed core and distribution layer operations using Cisco Catalyst 6500 and 4500 Series chassis-based switches, ensuring the backbone of the Secretariat’s LAN met rigorous performance standards.
- Optimized Layer 2 stability by implementing and managing VTP (VLAN Trunking Protocol) domains, ensuring consistent VLAN database synchronization across the entire campus fabric.
- Performed expert-level hardware troubleshooting, resolving supervisor engine failures, line card issues, and backplane congestion on legacy and modern chassis modules.
- Mitigated network vulnerabilities by identifying and patching outdated IOS versions, ensuring compliance with the latest security standards, and hardware features.
Network Engineer (HARDWARE & NETWORKING)
SVNT Info Tech Pvt Ltd
07.2015 - 07.2018
- Installation and setup of routers and switches.
- Installing, Configuring, Maintaining and Troubleshooting the Wired and Wireless Networks.
- Responsible for troubleshooting of networking equipment across multiple sites.
- Managed and executed end-to-end network deployments across multiple sites in India, ensuring consistent hardware standards and connectivity for distributed branch offices
- Coordinated the physical installation and rack-mounting of Cisco Catalyst and HP/Aruba switches, optimizing power redundancy and cable management in diverse data center environments.
- Orchestrated site readiness audits and cutover activities, migrating legacy network setups to modernized switching fabrics with minimal disruption to business operations.
- Configured and deployed Layer 2 and Layer 3 switching protocols across a mixed-vendor environment (Cisco and HP), ensuring seamless interoperability and traffic routing.
- Established secure remote management for all newly installed hardware using SSH, SNMPv3, and Out-of-Band (OOB) management to allow for centralized monitoring from a primary NOC.
- Developed standardized configuration templates for Cisco and HP switches, ensuring uniform VLAN assignments, port security policies, and Quality of Service (QoS) tagging.
Education
BTech - CSE
JIJIT College of engineering
Intermediate - M.P.C
IDEAL Junior College
DilsukhnagarSSC - undefined
RHS High School
ShalibandaSkills
Good Knowledge of Routing concepts and OSPF, BGP and MPLS
Good Knowledge of switching concepts and STP, VLAN, HSRP and VRRP
Certification
Completed Cisco Certified Network professional Exam (CCNP)
Declaration
I hereby affirm that the Information in this document is accurate and true to the best of my knowledge and belief. Date: Place: Hyderabad (Dhanni Sandeep Kumar)
Personal Details
- Father Name: Dhanni Sandeep Kumar
- Gender: Male
- DOB: 1989-11-27
- Marital Status: Married
- Nationality: Indian
- Address: H.No 23-4-424 Sultanshahi near moghalpura PS Hyderabad-65,TS.
Timeline
Sr. Network Engineer
Sify Digital Services Ltd
05.2022 - Current
Specialist (Networking)
HCL Technologies Ltd
03.2021 - 05.2022
Network Engineer
Akshara Enterprises India Pvt Ltd
06.2019 - 02.2021
Network Engineer (HARDWARE & NETWORKING)
SVNT Info Tech Pvt Ltd
07.2015 - 07.2018
Intermediate - M.P.C
IDEAL Junior College
SSC - undefined
RHS High School
BTech - CSE
JIJIT College of engineering