Lead Architect - Network Engineering

Company Profile

Lennox (NYSE: LII) Driven by 130 years of legacy, HVAC and refrigeration success, Lennox provides our residential and commercial customers with industry-leading climate-control solutions. At Lennox, we win as a team, aiming for excellence and delivering innovative, sustainable products and services. Our culture guides us and creates a workplace where all employees feel heard and welcomed. Lennox is a global community that values each team member’s contributions and offers a supportive environment for career development. Come, stay, and grow with us.

Job Description

We are seeking a Lead Architect – Network & Data Infrastructure to own the end‑to‑end architecture, governance, and evolution of enterprise network platforms.This role is responsible for defining scalable, secure, and resilient network architectures across LAN, WAN, SD‑WAN, and wireless domains, while ensuring alignment with business objectives, security standards, and operational excellence.The ideal candidate brings deep hands‑on expertise combined with strong architectural judgment, acting as the design authority and senior escalation point for complex network and security challenges.This role plays a critical part in driving modernization, performance optimization, and proactive vulnerability management across the enterprise.

Architecture & Design:

• Define and own enterprise network architecture standards, reference designs, and technology roadmaps across LAN, WAN, SD‑WAN, and wireless platforms
• Lead architecture design reviews and provide technical direction for Cisco and Aruba–based solutions
• Translate business, application, and security requirements into scalable and resilient network designs

Network Engineering & Optimization:

• Design, deploy, and optimize high‑availability network solutions using Cisco and Aruba technologies
• Architect and govern dynamic routing strategies (OSPF, EIGRP, BGP) to ensure performance, resiliency, and scalability
• Architect and optimize Aruba wireless platforms for enterprise‑grade mobility and seamless user experience
• Operational Excellence & Incident Leadership
• Act as the final escalation authority for critical and complex network incidents
• Lead root cause analysis (RCA) for major incidents and drive corrective and preventive actions
• Collaborate with operations, security, and application teams to minimize downtime and improve MTTR

Security & Vulnerability Governance

• Architect network security controls aligned with enterprise security frameworks and industry best practices
• Oversee vulnerability identification, remediation strategy, and lifecycle management using tools such as Rapid7, Nessus, or Qualys
• Ensure patching, hardening, and compliance with security, QoS, and regulatory standards

Monitoring, Automation & Continuous Improvement

• Define monitoring and observability standards using tools such as SolarWinds, PRTG, and Fluke
• Drive network performance analytics, capacity planning, and continuous optimization initiatives
• Promote and guide network automation and standardization to improve reliability and operational efficiency

Documentation, Reporting & Stakeholder Engagement

• Maintain architecture documentation, standards, and design artifacts
• Provide executive‑level reporting on network health, risk posture, vulnerabilities, and improvement initiatives
• Mentor senior engineers and influence cross‑functional teams without direct authority

Qualifications

• Bachelor’s degree in Computer Science, IT, or related field (relevant certifications may substitute).
• 12 years of progressive experience managing and architecting enterprise‑scale network environments
• Demonstrated experience operating at architect or senior design authority level

Technical Skills

• Advanced expertise in Cisco switching, routing, wireless, and SD‑WAN platforms

•  Strong command of OSPF, EIGRP, and BGP in large‑scale environments

•  Deep knowledge of Aruba wireless architectures and optimization techniques

•  Experience with vulnerability management and security assessment tools

•  Proficiency with enterprise network monitoring and performance tools

•  Exposure to network automation frameworks and scripting

Soft Skills

• Strong analytical and problem‑solving mindset with architecture‑level thinkin

• Ability to communicate complex technical concepts to technical and non‑technical stakeholders

• Proven leadership during high‑severity incidents and transformation initiatives

• Ability to work independently while influencing cross‑functional teams

 Key Competencies

• Enterprise network architecture & design governance
• Proactive risk, performance, and vulnerability management
• Incident leadership and decision‑making under pressure
• Continuous learning and adoption of emerging network technologies

Certifications (Preferred)

• Cisco Certified Network Professional (CCNP)
• Aruba Certified Mobility Associate (ACMA)
• Aruba Certified SD-WAN Deployment Professional (ACSDP)
• CCIE is a plus