Sr Network Engineer

About the role

The Sr. Network Engineer partners with other engineering teams and Enterprise Architects to design, deploy, manage, and operate a large enterprise network. The infrastructure consists of a mix of network switches, routers, wireless access points, firewalls, load balancers and cloud network/application services. The Sr. Network Engineer operates and maintains some or all these components while ensuring an uptime of 99.9%. This position will play a lead role supporting projects, enhancing automation, performing technology evaluations, deploying Network technologies, and will be tasked with the day-to-day operation of Lennar network infrastructure. In addition, this role will participate on process improvement, operational excellence, AI transformation, design, and standardization.

Responsibilities

• Functions in a customer-facing role and therefore is expected to be approachable and service minded.
• Provides Tier 3 engineering support during critical operational incidents as necessary.
• Maintains current network infrastructure and leverages the manufacturer for advanced support.
• Maintains high network availability for redundancy and resilience.
• Understands and accounts for peak load; manages peak load events.
• Follows industry best practices, and Standard Operating Procedures (SOPs) for operational efficiency.
• Optimizes, implements and monitors network performance.
• Maintains and reacts to Enterprise-grade network monitoring system.
• Works with automation tools and platforms such as GitHub, HashiCorp, and coding languages like Python, Terraform, Ansible to build automation workflows and increase efficiency.
• Supports the deployment of network equipment for new office build outs.
• Oversees the order and deployment of WAN circuits, including MPLS, DIA, Broadbands, VPN's and point-to-point circuits.
• Supports the LAN wired and wireless infrastructure.
• Deploys, operates and maintains F5 load balancing LTM and APM modules.
• Works closely with Enterprise Security Office to implement reliable, manageable, and secure solutions that meet Network/Security Industry standards.
• Assists in the deployment of Palo Alto SD-WAN and SASE (Prisma SD-WAN).
• Performs security audits of the network system and improves the security posture.
• Assists with disaster recovery setups, both on a global and site-by-site basis.
• Performs network technologies evaluation.
• Writes technical documentation, including architecture decision records, network diagrams, policies and procedures.

Requirements

• Bachelor’s degree in Computer Science, Information Technology, Telecommunications, Engineering or related field; or equivalent work experience.
• Certifications such as ITIL, Cisco CCNP, or similar are preferred but not required.
• 5+ years relevant work experience
• This is primarily a sedentary office position which requires the incumbent to have the ability to operate computer equipment, speak, hear, bend, stoop, reach, lift, and move and carry up to 25 lbs.
• Finger dexterity is necessary.
• 10-20% of travel is required.
• Must be self-motivated with strong interpersonal, communication, presentation, and organizational skills.
• The ability to work effectively with clients, management, and staff members in a multi-tiered, fast-paced environment.
• Experience working in previous large Enterprise Network Engineering role desired.
• Ability to translate technical recommendations into a visual format for presentation to non-technical stakeholders.
• Experience with automation tools and CI/CD principles.
• Proficient with Palo Alto SD-WAN and SASE (Prisma SD-WAN).
• Expert with Cisco Meraki Networks, Catalyst and Nexus network switches, F5 load balancers LTM abd APM products, Cisco ISR and ASR routers.
• Knowledge of IP fundamentals, DNS, DHCP, and IPv4/IPv6.
• Knowledge and expertise in Wireless LAN technologies.
• Must demonstrate in-depth understanding of the OSI model.
• Demonstrable knowledge in the design, implementation, troubleshooting and operations of data center technologies.
• Firm understanding of operating systems, virtualization, network services for cloud enablement, and security.
• Consistently able to solve connectivity problems to increase bandwidth, improve response times, maximize performance, and support global operations.
• Extensive skills in WAN related architectures and technologies important to enterprises, such as MPLS, hybrid environments connectivity, IPsec and emerging technologies.

Benefits

• Our Associates have access to robust health insurance plans, including Medical, Dental, and Vision coverage, ensuring their health needs are well taken care of.
• Our 401(k) Retirement Plan, complete with a $1 for $1 Company Match up to 5%, helps secure their financial future.
• Paid Parental Leave and an Associate Assistance Plan provide essential support during life's critical moments.
• Education Assistance Program and up to $30,000 in Adoption