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Ashish Sharma - Network Manager

[email protected]

Location: Chicago, Illinois, USA

Relocation: Local

Visa: H1B

Professional Summary: Network Manager with around 15 years of experience in designing, deploying, and managing complex wireless and wired network infrastructures. Proficient in Wi-Fi 5,6,6E, network security protocols (WPA3, 802.1X), across enterprise environments. Expertise in network automation using Python and shell scripting, VPN configuration (IPsec), and wireless troubleshooting using tools like Wireshark. Proven leadership in managing cross-functional teams, optimizing network performance, and implementing cloud-managed solutions like Juniper Mist and Cisco. Strong technical documentation skills, ensuring knowledge transfer and process consistency. Proficient in Wi-Fi 5,6, 6E technologies, ensuring high-speed, secure connectivity in multi-location environments. Expertise in RF site surveys and spectrum analysis to optimize wireless coverage, capacity, and performance in high-density areas. Led the migration from Cisco to Juniper environment, improving network scalability, performance, and security. Extensive experience with network security protocols such as 802.1X, WPA3, RADIUS, and TACACS+ for secure wireless access. Hands-on experience with packet analysis tools like Wireshark and tcpdump for advanced troubleshooting and performance optimization. Managed large-scale wireless networks, supporting over 2,000 simultaneous users with Cisco WLCs and Juniper Mist. Skilled in network automation using Python and Shell Scripting, improving network provisioning and reducing configuration errors by 30%. Led cross-functional teams in Wi-Fi deployments, enhancing network performance and reducing downtime by 40%. Managed secure remote access via VPN technologies such as IPsec, L2TP, and OpenVPN. Applied Quality of Service (QoS) policies to prioritize VoIP, video, and critical applications for improved user experience. Experience with enterprise-grade Cisco APs, Juniper Mist APs, and Mist Cloud for centralized wireless management. Extensive knowledge of firewalls such as Cisco ASA in wireless and hybrid cloud setups. Authored technical documentation, SOPs, and troubleshooting guides, ensuring efficient knowledge transfer within teams. Conducted training sessions on Wireless standards, WIPS, and network troubleshooting techniques to enhance team capabilities. Expertise in Active Directory, Group Policy, DNS, DHCP, and TCP/IP configuration for secure, efficient network operations. Conducted pre and post installation site surveys and RF analysis to ensure optimal wireless network design and coverage. Adept at resolving complex Layer 2/3 issues, including NAT, PAT, VLAN, and STP, ensuring seamless data flow and connectivity. Proven ability to manage high-priority escalations, collaborate with cross-functional teams and deliver results in fast-paced environments. Certifications: Pursuing Wireless Design Professional (CWDP 304). Certified Wireless Network Administrator (CWNA 107 (304619)). Cisco Certified Network Associate (CCNA) Routing and Switching. Cisco Certified Network Associate (CCNA) Security. Certified ITIL v3. Technical Skills: Wireless Networking Wi-Fi Standards & Technologies: 802.11 a/b/g/n/ax/ac, WPA2/WPA3, 802.1X Authentication, Mesh Networks, RF Site Surveys, Wireless Intrusion Prevention Systems (WIPS). Wireless Equipment & Platforms: Cisco Aironet Series, Cisco Meraki (MR33, MR42), Juniper Mist Cloud & APs, Cisco WLCs, vBLEs (Virtual Bluetooth Low Energy), Cisco Connected Mobile Experiences (CMX), Mobility Services Engine (MSE). Network Infrastructure Routing & Switching: Juniper (M120, Mi10, MX960, MX480), Mikrotik Routers, Protocols & Services: TCP/IP, IPv6, DNS, DHCP, QoS, STP, RSTP, VTP, VLAN Security Security Protocols & Services: IPsec VPN, RADIUS, TACACS+, NAT/PAT, Access Control Lists (ACLs) Network Management & Monitoring Analysis Tools: Wireshark, tcpdump, Spectrum Analysis using Cisco Prime or Mist Cloud Management Platforms: Cisco Prime Infrastructure, Juniper Mist Cloud & Virtualization Cloud Platforms: Juniper Mist Cloud, Cisco CMX, Cisco Prime. Automation & Scripting Programming & Automation: Python, Shell scripts (Network Automation Scripts) Enterprise Systems: Directory Services, Active Directory, Group Policy, LDAP. Operating Systems: Windows Server, Windows 7/8/10, macOS, Linux. Documentation & Project Management Technical Documentation: Network Topology Diagrams, Standard Operating Procedures (SOPs), Technical Specifications, Visio, SAT/FAT Documentation, Bill of Materials (BOM). Mobile Technologies Cellular Technologies: 2G, 3G, 4G, LTE, UMTS, OOBM. Professional Experience: Client: Western Digital, San Jose, CA June 2024 Present Role: Senior Network Manager Responsibilities: Led the design, deployment, and optimization of an enterprise-wide wireless network utilizing the latest wireless standards to ensure high-speed, secure connectivity across multiple locations. Conducted comprehensive RF surveys and spectrum analysis to troubleshoot and optimize wireless coverage, minimizing interference and maximizing network capacity in high-density environments. Managed a team of network engineers in the successful migration of legacy wireless infrastructure (Cisco) to a next-generation cloud-managed solution (Juniper Mist Cloud), enhancing network scalability and performance. Developed and implemented network security protocols, including 802.1X, WPA3, and RADIUS, to secure wireless access and ensure compliance with organizational security policies. Utilized Wireshark and tcpdump for advanced packet analysis and troubleshooting, resolving complex wireless connectivity issues and reducing downtime by 40%. Managed network automation using Python and Shell scripting, significantly reducing manual configuration errors and improving network provisioning times by 30%. Developed and maintained detailed technical documentation, including network topology diagrams, SOPs, and troubleshooting guides, ensuring efficient knowledge transfer within the team and to stakeholders. Led the troubleshooting and resolution of critical network issues related to VPN connectivity (IPsec/L2TP), ensuring secure remote access for employees and external partners. Authored detailed technical documents on Wi-Fi troubleshooting techniques, covering RF surveys, spectrum analysis, and interference mitigation methods, improving team efficiency by 30% in resolving wireless issues. Directed the deployment of a high-performance wireless network for a multi-site campus environment, using Cisco WLC and Aironet APs to support over 2,000 simultaneous users. Expert in deploying and troubleshooting 802.11 a/b/g/n/ac (WiFi 5) and 802.11 ax (WiFi 6) standards, ensuring high-speed wireless connectivity. Configured and managed TCP/IP, IPv6, DNS, DHCP, and QoS for efficient network performance and seamless user experience. Designed and deployed mesh networks in high-density environments, ensuring optimal signal distribution and minimal interference across large office buildings. Led training sessions for internal teams on the latest wireless technologies, including Wi-Fi 6, 6E, WIPS, and network troubleshooting techniques to enhance operational efficiency. Developed detailed technical documentation and SOPs for wireless network deployments and troubleshooting guides using Visio, ensuring consistency and efficiency in ongoing projects. Configured and managed VPNs using IPsec/L2TP, GRE, and OpenVPN to provide secure and reliable remote access to the network. Deployed and managed Cisco Meraki APs (MR33, MR42), Aironet APs (2800, 3800), and Cisco WLCs (2500, 3500, 5500) to provide robust wireless networking solutions. Environment: Python, Wi-Fi, RF surveys, Cisco Aironet, WPA3, RADIUS, Wireshark, tcpdump, SOPs, VPN, IPsec, L2TP, Cisco WLC, TCP/IP, IPv6, DNS, DHCP, QoS, Mesh networks, WIPS, SOPs, GRE, OpenVPN, Cisco Meraki, Colubris, Mikrotik, TACACS+. Client: HSBC, Pune India. Jul 2022 Aug 2023 Role: Network Lead Engineer Responsibilities: Managed the global Wi-Fi infrastructure migration and deployment from Cisco to Juniper Mist, ensuring seamless transition and optimized network performance. Led and coordinated a cross-functional team, providing guidance and support to ensure timely and efficient project execution. Led the deployment, configuration, and troubleshooting of Juniper Mist APs, Mist Cloud, and Mist Edges, ensuring optimal wireless network performance. Authored and maintained technical documentation using Visio and internal tools including network designs, network best practice guides, technical bulletins, training materials, deployment guides, and standard operating procedures (SOPs) and change requests (CRs) to support network management and troubleshooting. Led the design and deployment of large-scale Wi-Fi networks for enterprise environments, ensuring optimal coverage and capacity planning based on traffic demands and user density. Implemented and managed Juniper Mist Cloud solutions for centralized wireless management and monitoring, reducing operational complexity. Coordinated with Cisco TAC for escalated issues, collaborating on resolutions and conducting root cause analysis to prevent recurrence. Optimized wireless security by configuring WPA2/WPA3, 802.1X authentication, and RADIUS to ensure secure network access across multiple campuses. Troubleshoot complex Wi-Fi issues, leveraging tools like Wireshark and tcpdump to identify and resolve packet loss, interference, and roaming problems. Led a team of engineers in deploying and configuring Juniper Mist APs, integrating them with cloud-based Mist Edge and Wi-Fi 6 infrastructure for future-proofing the network. Collaborated with cross-functional teams (security, IT, and applications) to integrate wireless networks into broader enterprise architecture, ensuring network efficiency and security. Implemented QoS policies for prioritizing VoIP, video, and critical applications over Wi-Fi to ensure optimal user experience in high-traffic environments. Addressed and resolved escalated migration and operational issues, providing expert troubleshooting and ensuring minimal downtime during transitions. Environment: Python, Cisco, Juniper Mist, Mist Edges, Mist Cloud, RF Site, Visio, Cisco APs, WPA2/WPA3, RADIUS, Wireshark, tcpdump, QoS, Cisco WLCs, WIPS, SOPs, CRs. Client: Benison Technologies Pvt Ltd, Pune, India. Aug 2020 Jun 2022 Role: Technical Support Manager Responsibilities: Conducted pre- and post-site surveys for deploying LTE wireless enterprise routers to ensure optimal setup and functionality. Managed the integration and troubleshooting of 2G, 3G, 4G, UMTS, LTE, and OOBM technologies, ensuring seamless communication and connectivity across global sites. Provided technical mentorship to the team, addressing technical issues and introducing new technologies to enhance knowledge and performance. Developed and maintained comprehensive technical documentation, including external and internal resources, to ensure accuracy and consistency. Utilized expertise in networking protocols (TCP/IP, Ethernet, VLAN) to troubleshoot connectivity issues and optimize network performance for wireless environments. Applied strong knowledge of security protocols (IPSEC, SSL-VPN, NAT, GRE) to secure wireless connections and address customer security concerns. Led and mentored Pre-Sales and Tech Support teams, guiding them in handling customer needs and technical inquiries effectively. Coordinated closely with internal engineering teams and clients to facilitate seamless communication and project execution. Configured the support team from scratch. Defined, streamlined, and automated various processes and tools for smoother functionality of the team. Managed P1 escalations by bringing together cross-functional teams to resolve critical issues promptly. Acted as the single point of contact (SPOC) for all technical, financial, and general inquiries, handling escalations to ensure smooth project delivery. Managed vendor relationships to streamline procurement and project logistics. Created essential technical documentation and network diagrams using Visio, including SAT, FAT, and BOM, and developed instructional videos for user guidance. Conducted pre and post installation site surveys at multiple remote locations nationwide to support efficient and compliant installations. Performed pre and post installation site surveys at various retail store locations to assess site readiness. Managed and resolved P1 escalations, ensuring quick response and minimal disruption to project timelines. Environment: LTE, P1 escalation, SAT, FAT, BOM, Visio, TCP/IP, Ethernet, VLAN, VPN, NAT, GRE Client: Indio Networks Pvt Ltd, Pune, India. Jun 2019 Jul 2020 Role: Technical Support Manager Responsibilities: Performed comprehensive analysis, deployment, and troubleshooting of wired and wireless network infrastructure, ensuring optimal network performance and reliability. Developed scripts using Python and shell scripting to automate daily operational tasks, improving efficiency and reducing manual workload for routine processes. Monitored and optimized the health and performance of cloud-hosted servers, implementing proactive measures to maintain system stability and responsiveness. Provided servant leadership to a technical support team, handling escalations and guiding team members to resolve complex technical issues effectively. Facilitated communication between engineering and support teams, ensuring alignment on technical priorities and effective issue resolution. Created and maintained detailed documentation for internal and external products and services, supporting knowledge transfer and consistent troubleshooting procedures. Led weekly technical case reviews and training sessions, sharing insights and best practices to enhance team knowledge and skills. Conducted regular project review meetings to monitor progress against schedule and budget, facilitating timely project completion and delivery to clients, while extending technical support as needed. Interfaced with customers to provide project status updates and delivery timelines, ensuring adherence to established delivery schedules and maintaining strong client relationships. Led network operations involving Colubris 3000 Series and Mikrotik Routers, ensuring secure and stable network environments. Coordinated and managed cross-functional development teams and business partners in a global setting, ensuring effective collaboration and project execution. Environment: LTE, Python, Shell scripting, technical documentation, user guides, KB articles, TCP/IP, Ethernet, VLAN Client: Persistent Systems Ltd, Pune, India. Mar 2017 May 2019 Role: Sr Technical Support Engineer Responsibilities: Managed escalations related to vBLEs, Cisco CMX, MSE, and Prime Infrastructure, ensuring high-quality technical support and quick issue resolution. Coordinated with Cisco TAC for escalated issues, collaborating on resolutions and conducting root cause analysis to prevent recurrence. Trained, mentored, and led the L1 support team to enhance technical knowledge and improve service efficiency. Designed and validated RF link performance, quality, and reliability to maintain strong and stable wireless connectivity. Deployed virtual servers on AWS Cloud, enabling scalable and reliable infrastructure solutions. Monitored air interference, troubleshot, and resolved performance issues to optimize network performance. Developed technical documentation, including tech notes and Wiki articles, to support knowledge sharing and standardized processes. Provided expert support for Cisco Connected Mobile Experiences (CMX), Mobility Services Engine (MSE), and virtual Bluetooth Low Energy beacons (vBLEs), ensuring seamless location-based services and asset tracking for clients. Troubleshot and resolved escalated issues related to Cisco CMX and MSE, identifying root causes and implementing effective solutions to optimize performance and reliability. Configured, monitored, and maintained vBLEs for location tracking and proximity-based services, ensuring accurate data collection and client satisfaction. Created comprehensive technical documentation, including configuration procedures and troubleshooting guidelines, to support efficient problem resolution for CMX, MSE, and vBLEs deployments. Handled escalated technical issues from Tier-1 support, delivering timely solutions to complex IT infrastructure challenges for small to mid-sized businesses. Mentored Tier-1 support team members, sharing best practices and technical knowledge to enhance team effectiveness and response capability. Familiar with ticketing systems and remote support tools to streamline case handling and tracking. Environment: LAN, WAN, TCP/IP, Tier-1 support, DNS, DHCP, Windows, Mac OS, RF link, Cisco CMX, Prime, MSE, vBLEs. Client: Mojo Networks, Pune, India. Jun 2014 Feb 2017 Role: Technical Support Engineer Responsibilities: Designed, installed, configured, and managed technical components within the network environment Troubleshot 802.11 and 802.1x RADIUS authentication issues using Wireshark and tcpdump for efficient network diagnostics and resolution. Worked extensively with technologies including DHCP, DNS, RADIUS, BYOD, Layer 2/3 Roaming, NAT, PAT, VLAN, STP, and various network switches, with solid expertise in the OSI model and TCP/IP stack. Conducted RF site surveys and addressed performance issues and coverage gaps to ensure optimal network capacity and data rates. Trained new engineers in network technologies and company-specific products, enhancing team capability and technical proficiency. Organized and led technical meetings with the Engineering and Product Management teams, created technical documentation for new features, replicated complex issues in lab environments, and filed bugs for continuous improvement. Analyzed network logs, packet traces, and bandwidth usage to understand communication patterns, identifying essential application-to-application networking information such as source/destination, protocol, and port data. Documented network environment, including topologies and specific device configurations, to ensure accurate and up-to-date records for firewall and network administration. Environment: LAN, WAN, RADIUS, Wireshark, TCPdump, DHCP, DNS, BYOD, NAT, PAT, VLAN, STP, OSI model, TCP/IP, RF, Client: Fiserv India Pvt Ltd, Pune, India. May 2012 May 2014 Role: Sr Helpdesk Engineer Responsibilities: Internal software and hardware support for the employees of the organization Administration/Troubleshooting of RSA secure Client 6.2 and 7.2 McAfee Server administrator Provided 24/7 network support for all network infrastructure, ensuring reliable operations across the organization. Environment: AD, Email clients, desktop support, macOS, Win XP, Win 7 Client: Applied Micro Circuits Corp, Pune, India. Jul 2011 Jan 2012 Role: IT Helpdesk Admin Responsibilities: Assembled and upgraded computer peripherals, repaired PCs and laptops, and provided support for system troubleshooting. Planned, installed, and maintained small to medium-sized LANs, including setup and printing support for Windows XP, Windows 7, and macOS environments. Installed operating systems, application software, and antivirus solutions, along with a variety of hardware devices such as printers, modems, and scanners. Maintained and troubleshooted email systems and Outlook, responding to technical support requests for Windows and macOS endpoints, as well as iOS and Android devices. Performed regular maintenance of installed PCs, networks, routers, switches, and peripheral devices. Participated in key departmental IT projects and performed diagnostics on network and desktop environments under IT management direction. Environment: Windows, macOS, LANs, PCs, Laptops, iOS, Networks, Wireless networks. Client: New VC International, Pune, India. Nov 2009 Jun 2011 Role: Technical Support Engineer Responsibilities: Handled queries related to Linksys wireless routers and APs, Range extenders and for various SOHO devices. Installed and maintained desktop computers, Linksys wireless routers and APs, Range extenders and for various SOHO devices, and various peripherals. Provided scheduled maintenance and technical support to customers, ensuring efficient operation and upkeep of system equipment. Configured and maintained LAN/WAN networks, including IP routing, TCP/IP protocols, access control lists, VLAN creation, and VPN tunneling. Conducted hardware troubleshooting, coordinated with vendors, and prepared detailed weekly and monthly status reports to track project and maintenance progress. Proficient in Microsoft OS and its products, including Windows Server and Windows 7, for efficient system management and collaboration. Experienced as a System Support Engineer, handling hardware and software support for printers, laptops, and both external and internal storage devices. Escalated complex issues to higher-level support when necessary, including delays in response times, repair challenges, and parts availability, to maintain high levels of customer satisfaction. Conducted general maintenance, troubleshooting, and repairs for computer systems, printers, range extenders and associated peripherals. Environment: LAN, WLAN, IP, TCP/IP, VLAN, VPN, Windows, MacOS. Education: Bachelor s in computer applications from Lachoo Memorial College of Science and Technology, Jodhpur, India. Keywords: active directory information technology fourg California Wisconsin