Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

ABHIKUMAR SONDAGAR

St. Louis,MT

Summary

Experienced Network and Systems Engineer with 5+ years of hands-on experience designing, implementing, and securing enterprise networks and IT infrastructure. Adept in managing LAN/WAN environments, virtual machines, cloud infrastructure (AWS & Azure), and cybersecurity measures. Proven ability to troubleshoot complex systems, optimize network performance, and implement scalable solutions that align with organizational goals. Strong communicator with cross-functional collaboration experience and a track record of supporting high-availability systems.

Overview

7
7
years of professional experience
1
1
Certification

Work History

System/Network Administrator

Crysalis Biosciences Inc.
05.2024 - Current
  • Architected and maintained robust LAN/WAN and virtual network infrastructure to support scalable, high-availability business applications.
  • Configured and administered enterprise-grade firewalls (Fortinet, Cisco ASA), switches (Meraki), and VPNs to enforce security segmentation and optimize connectivity across multi-site environments.
  • Deployed and monitored Azure virtual machines and services; implemented hybrid connectivity with on-premise systems using VPN gateways.
  • Led identity and access control initiatives using Active Directory, Group Policy, and PKI-based authentication to strengthen organizational security posture.
  • Developed network security controls including firewall rules, VLAN segmentation, and NAC policies in alignment with industry best practices and compliance requirements.
  • Created and maintained system documentation, including network diagrams, standard operating procedures (SOPs), and recovery plans for audit readiness and rapid troubleshooting.
  • Spearheaded disaster recovery and business continuity planning by designing redundant infrastructure and regularly testing backup systems.
  • Implemented centralized log monitoring and alerting through tools such as SolarWinds and Syslog for performance visibility and incident response.
  • Collaborated cross-functionally with security, DevOps, and application development teams to support infrastructure automation and compliance reviews.
  • Conducted network capacity planning and performance tuning, reducing latency by 28% across inter-site connections.
  • Initiated upgrade and patching cycles for critical infrastructure, minimizing exposure to known vulnerabilities while ensuring minimal downtime.
  • Configured and secured enterprise network infrastructure, managing Cisco switches, routers, and firewalls (including Palo Alto), and resolved complex TCP/IP, DNS, DHCP, and routing issues to ensure optimal network performance.
  • Maintained high-availability virtualized environments using VMware, supporting mission-critical Windows Server workloads with 99.9% uptime.
  • Led and executed IT infrastructure projects such as system migrations, enterprise software rollouts, VPN deployments, and network upgrades across multiple departments and vendor teams.
  • Designed and implemented VPN and remote access solutions, enabling secure hybrid work.
  • Developed and automated routine administrative tasks using PowerShell/Appscript scripting, improving efficiency and eliminating manual error-prone processes.
  • Administered Windows Server environments (2008, 2012, 2016, 2022) with role-based access, GPOs, file shares, and application hosting to meet organizational needs.
  • Built and maintained MySQL databases powering internal business applications such as Trident and Dearman; monitored performance and ensured database integrity.
  • Spearheaded the Google Workspace to Microsoft 365 migration, ensuring zero downtime, complete data migration, and successful user adoption.
  • Created and maintained detailed network topology diagrams, SOPs, and training documentation for both technical teams and end users.
  • Supported Active Directory infrastructure and seamless user provisioning with role-based permissions across on-prem and cloud environments.
  • Collaborated with HR, Operations, and Finance to align infrastructure with organizational growth and compliance initiatives.

Cloud & Infrastructure Support Specialist

Pro-tek Consulting
05.2023 - 04.2024
  • Delivered Tier 2/3 support for enterprise Windows Server infrastructure, ensuring SLA adherence and optimal uptime across departments.
  • Managed DNS, DHCP, and VPN services, including split-tunneling configurations and remote access policies using FortiClient and OpenVPN.
  • Assisted with the deployment and maintenance of Linux-based services, including firewall and web proxy configurations.
  • Participated in the transition to Office 365 and implementation of Exchange Online Protection and Mimecast for secure email and spam filtering.
  • Conducted root cause analysis of system outages and documented findings for preventive measures.
  • Helped define and execute secure configuration baselines across servers and workstations, contributing to security hardening efforts.
  • Facilitated VoIP integration projects, supporting Zoom and Microsoft Teams deployments as part of unified communications (UCaaS) initiatives.
  • Created training documentation and technical knowledge base articles to reduce repetitive support incidents.

IT Projects & Security Analyst

Raghuveer Infotech
01.2020 - 08.2021
  • Assisted in the deployment and monitoring of cloud-hosted infrastructure using AWS services including EC2, VPC, Route 53, and CloudWatch.
  • Designed and implemented VPCs with subnets, route tables, NAT gateways, and security groups to support secure multi-tier architecture.
  • Configured and maintained site-to-site VPN tunnels for secure communication between on-premises environments and AWS.
  • Supported administration of Palo Alto Next-Gen Firewalls—configured policies, NAT rules, and security zones for segmented network access.
  • Worked with Layer 2/3 switches (Cisco and HP) to manage VLANs, trunking, STP, and port configurations in a hybrid campus setup.
  • Provisioned and managed virtual machines in VMware ESXi and vCenter for lab testing and internal development environments.
  • Conducted network troubleshooting using tools such as Wireshark and NetFlow to identify and resolve latency and packet drop issues.
  • Participated in scheduled upgrades for switches and firewall firmware, ensuring minimum downtime and rollback safety.
  • Supported cloud resource optimization by analyzing usage patterns and making recommendations for cost-effective hosting.
  • Maintained up-to-date documentation for network architecture, IP allocations, firewall rules, and change management logs.

Network Support & Systems Engineer

Pixigo Innovation Pvt. Ltd
02.2018 - 12.2019
  • Configured and supported LAN/WAN infrastructure including Cisco routers, switches, and wireless access points.
  • Assisted in deploying VLANs to segment network traffic and improve performance and security.
  • Performed regular monitoring and analysis using Wireshark and SolarWinds to detect anomalies and latency issues.
  • Participated in scheduled network maintenance, firmware upgrades, and patch management.
  • Investigated and resolved issues related to IP conflicts, switch loops, and DNS/DHCP misconfigurations.
  • Collaborated with senior network staff to implement and test firewall rules and ACLs on perimeter devices.
  • Maintained detailed documentation for IP addressing schemes, device configurations, and change logs.
  • Helped ensure compliance with university security policies through port audits and access control lists.

Education

Master of Science - Computer Science

California State University Long Beach
Long Beach, CA
05.2023

Bachelor of Science - Computer Engineering

Gujarat Technological University
Surat, Gujarat
08.2021

Skills

  • Tools & Platforms: Cisco Packet Tracer, GNS3, Wireshark, SolarWinds, VMware vSphere/ESXi, AWS (VPC, EC2, CloudWatch), Microsoft 365, pfSense, ServiceNow
  • Databases & Programming: MySQL, Firebase, Azure SQL Server, Microsoft SQL Server, Java, Python, Dart, C, PowerShell, Google Apps Script
  • Documentation: Network Diagrams (Visio), Technical SOPs, Change Logs, User Guides, Training Materials
  • Soft Skills: Problem-solving, Time Management, Collaboration, Verbal & Written Communication, Cross-functional Coordination
  • Networking: TCP/IP, DNS, DHCP, VPN, VLAN, wireless, OSI model
  • Hardware: Cisco, Fortinet, Palo Alto; routers, switches, UPS
  • Operating Systems: Windows Server, Active Directory, Linux, Unix
  • Cloud & Virtualization: AWS, Azure: Intermediate, GCP:Basics, VMware, virtual networks, Load Balancer
  • Security: IAM (OAuth, SAML, PKI), firewall policies, SSL, DLP, NAC, disaster recovery, Endpoint Protection, Palo Alto Firewall Configuration
  • Monitoring/Tools: Ping, Log Analysis, Network Performance Optimization
  • Other: Group Policy, UCaaS (Zoom, Teams), O365, Exchange, Google workspace, Process Historian: Data collection

Certification

AWS Certified Cloud Practitioner

Cisco Networking Basics

Microsoft Certified: Azure Fundamentals (AZ-900)

VMware Certified Professional – Data Center Virtualization (VCP-DCV)

Timeline

System/Network Administrator

Crysalis Biosciences Inc.
05.2024 - Current

Cloud & Infrastructure Support Specialist

Pro-tek Consulting
05.2023 - 04.2024

IT Projects & Security Analyst

Raghuveer Infotech
01.2020 - 08.2021

Network Support & Systems Engineer

Pixigo Innovation Pvt. Ltd
02.2018 - 12.2019

Master of Science - Computer Science

California State University Long Beach

Bachelor of Science - Computer Engineering

Gujarat Technological University

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