Network Engineer TS/SCI clearance required

We are seeking a Senior Network Engineer to support a secure, standalone enterprise environment. This role is responsible for designing, maintaining, and securing network infrastructure supporting virtualized systems, application platforms, and compliance- driven operations. Network Engineer Tampa, FL TS/SCI security clearance Roles & Responsibilities

• Design, implement, and maintain Layer 2/Layer 3 network infrastructure

• Configure and support Cisco Catalyst (9300/9500 series) and Cisco NX- OS-based switching platforms

• Manage VLANs, trunking, segmentation, ACLs, firewall rules, and traffic segmentation

• Maintain network topology, routing logic, and traffic flow design

• Support evaluation and future deployment of data center-optimized switching platforms for modernization initiatives

• Deploy and support 802.1X authentication using Cisco ISE and LDAP Integration

• Implement machine authentication with user fallback, dynamic VLAN assignment, and fail-open design

• Manage TACACS+ for network device administration

• Support networking for VMware ESXi / vCenter environments, including vSwitch and distributed switch configuration

• Provision and maintain VM networking

• Troubleshoot multi-tier service flows across infrastructure layers

• Implement and maintain STIG-compliant network configurations

• Enforce port security, DHCP snooping, Dynamic ARP Inspection, and secure management access

• Support RMF security controls and FIPS-compliance

• Integrate network devices with SIEM (Elastic), Zabbix, or equivalent monitoring tools

• Troubleshoot network connectivity, authentication failures, and application reachability issues

• Perform structured troubleshooting using logs, packet capture, and service validation

• Support change control (CAB) processes

• Execute network upgrades (e.g., Cisco IOS-XE / NX-OS) with validation and rollback planning

• Maintain documentation including VLAN mappings, IP plans, and network diagrams

• Support network components of backup and disaster recovery operations

• Validate connectivity for backup systems and storage platforms

• Assist in failover and restoration procedures

• Work with systems engineers, security teams, and application owners

• Provide network impact analysis for system architecture decisions, Description Leidos has an immediate need for a highly skilled and versatile Data Protection Engineer to join the Network Execution Team supporting a critical Zero Trust initiativ…

• 1 month ago

• An active TS/SCI security clearance.

• Current DoD 8570 certification at IAT level II, (i.e. Security+ CE).

• 3+ years of experience in network administration/engineering in a Cisco environment.

• Experience with Cisco switches and routers

• A solid foundation in networking including routing, switching, and security.

• Ability to work in a high-tempo operational environment where priorities change frequently.

• Must be able to interface with individuals at all levels of the organization both verbally and in writing.

• Must be well-organized with the ability to coordinate and prioritize multiple tasks simultaneously., * Experience with hybrid connectivity between on-prem and AWS

• Familiarity with AWS VPC design, Site-to-Site VPN, Client VPN, and Direct Connect

• Understanding of extending secure or restricted environments into cloud architectures

• Knowledge of BGP routing concepts, including route advertisement, path selection, redundancy, and failover

• Experience with BGP in hybrid cloud or enterprise routing environments

• Ability to troubleshoot routing issues such as asymmetric paths and route filtering

• Experience with Cisco NX-OS platforms (e.g., Nexus series)

• Familiarity with data center technologies such as: o vPC (Virtual Port Channel) o Leaf-spine architectures o High-throughput east-west traffic design

• Ability to support or lead network modernization efforts toward data center-optimized architectures

• Experience with Terraform (AWS networking) or Ansible for network automation

• Ability to automate provisioning, validation, and compliance checks

We offer a competitive benefits and compensation package and FUN place to work! Benefits include, but not limited to: Health and Wellness Benefits Medical Insurance (three CareFirst healthcare plans to choose from, Dental and Vision Insurance, 75% covered for employee/ 50% per dependant Health Savings Account (HSA) contributions $1500 individual/ $3000 family Personal Insurance Benefits Company-paid Life Insurance and AD&D coverage Company-paid Short-term and Long-term Disability Insurance Paid Leave Employees receive 20 days of vacation/10 holidays built into hourly rate/ 5 days of sick time (currently used for snow, jury, bereavement) Retirement Pre-tax 401k program including 6% company match 100% fully vested from eligibility date *Eligible after 90 days of employment Tulzi Technologies provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, pregnancy, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training., + $69,550-125,725 per year

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