Networking & security Specialist (Core Infrastructure Services)

About Signify

Through bold discovery and cutting-edge innovation, we lead an industry that is vital for the future of our planet: lighting. Through our leadership in connected lighting and the Internet of Things, we're breaking new ground in data analytics, AI, and smart solutions for homes, offices, cities, and beyond.

At Signify, you can shape tomorrow by building on our incredible 125+ year legacy while working toward even bolder sustainability goals. Our culture of continuous learning, creativity, and commitment to diversity and inclusion empowers you to grow your skills and career.

Join us, and together, we’ll transform our industry, making a lasting difference for brighter lives and a better world.

More about the role

Role Purpose

The Networking & Security Specialist – Core Infrastructure Services is responsible for the operational management, availability, security, performance, and continuous improvement of the foundational network services that enable reliable and secure enterprise connectivity globally.

The role owns and supports core network infrastructure platforms including:

- DNS
- DHCP
- IP Address Management (IPAM)
- TACACS
- RADIUS
- Cisco Identity Services Engine (ISE)
- Network Access Control (NAC)
- Proxy Services
- SolarWinds
- Syslog Infrastructure
- NetFlow & Traffic Analysis Platforms
- Cloudflare Core Infrastructure Services

The specialist works closely with network operations teams, security teams, cloud teams, service providers, and platform owners to ensure the stability, security, scalability, and compliance of these critical services across on-premises, cloud, and hybrid environments. These responsibilities align with the Network Services scope covering DNS, DHCP, IPAM, authentication services, network visibility, and supporting infrastructure platforms.

Key Responsibilities

Core Network Services

- Administer and maintain global DNS infrastructure and services.
- Manage enterprise DHCP services and address allocation standards.
- Own and maintain IP Address Management (IPAM) platforms and data accuracy.
- Support lifecycle management of DDI platforms.
- Configure and maintain proxy services supporting secure connectivity.
- Ensure high availability, resiliency, and performance of core infrastructure services.
- Support migration, consolidation, and modernization initiatives for network infrastructure platforms.

Authentication & Access Services

- Administer TACACS authentication services for network device management.
- Manage RADIUS infrastructure supporting wireless and network authentication.
- Operate and maintain Cisco ISE environments.
- Support Network Access Control (NAC) services and policy enforcement.
- Maintain authentication integrations with identity platforms and Active Directory services.
- Support secure access controls and role-based administration.

Monitoring, Visibility & Observability

- Manage and maintain SolarWinds platforms and associated monitoring systems.
- Support Syslog infrastructure and log collection platforms.
- Administer NetFlow, IPFIX, and traffic analysis solutions.
- Monitor network service health, performance, utilization, and capacity.
- Develop dashboards, reports, and operational insights.
- Support observability initiatives to improve operational visibility and proactive issue detection.

Infrastructure Operations

- Support platform upgrades, patching, lifecycle management, and vulnerability remediation.
- Execute configuration management and compliance activities.
- Create and maintain operational documentation, diagrams, standards, and SOPs.
- Participate in incident, problem, and change management processes.
- Perform root-cause analysis for recurring infrastructure issues.
- Ensure platform compliance with cybersecurity and operational standards.
- Drive automation and self-healing initiatives across supported platforms.

Vendor & Service Management

- Work with managed service providers and vendors to resolve operational issues.
- Participate in supplier governance and service review activities.
- Review platform performance and recommend improvements.
- Support technology evaluations and roadmap initiatives.

Required Technical Skills

Core Infrastructure

- DNS
- DHCP
- IPAM
- DDI Platforms

Network Authentication & Security

- Cisco Identity Services Engine (ISE)
- TACACS
- RADIUS
- Network Access Control (NAC)

Monitoring & Observability

- SolarWinds
- Syslog
- NetFlow
- IPFIX
- Network Performance Monitoring

Connectivity Services

- Proxy Technologies
- Cloudflare Infrastructure Services
- Traffic Management Platforms

Cloud Networking

- Microsoft Azure Networking
- AWS Networking
- Hybrid Networking Concepts

Operational Skills

- Incident Management
- Problem Management
- Change Management
- Infrastructure Lifecycle Management
- Automation & Scripting
- Technical Documentation

Experience & Qualifications

- Bachelor's degree in Computer Science, Information Technology, Engineering, or related field.
- Minimum 5–8 years of experience in enterprise network infrastructure operations.
- Experience managing DNS, DHCP, IPAM, authentication services, and network observability platforms.
- Strong troubleshooting skills across network infrastructure and authentication services.
- Experience supporting large-scale global enterprise environments.
- Experience working with managed service providers and multi-vendor environments.
- Understanding of cybersecurity principles and secure network design.

Key Competencies

- Strong analytical and troubleshooting capabilities
- Operational ownership mindset
- Customer-focused approach
- Attention to detail
- Effective stakeholder communication
- Problem-solving and root-cause analysis
- Continuous improvement mindset
- Automation-first thinking
- Ability to work independently and within global teams

Preferred Certifications

- Cisco CCNP Enterprise
- Cisco Identity Services Engine (ISE) Specialist
- Microsoft Azure Administrator Associate
- AWS Certified Advanced Networking – Specialty
- ITIL Foundation
- CompTIA Network+
- Cloudflare Certifications (preferred)

Success Measures

- High availability of DNS, DHCP, IPAM, and authentication services.
- Compliance with service availability and SLA targets.
- Reduction in recurring incidents through automation and problem management.
- Successful completion of platform lifecycle and upgrade activities.
- Accurate infrastructure documentation and operational standards.
- Improved monitoring, observability, and operational visibility.
- Positive stakeholder and customer satisfaction scores.

Everything we’ll do for you

You can grow a lasting career here. We’ll encourage you, support you, and challenge you. We’ll help you learn and progress in a way that’s right for you, with coaching and mentoring along the way. We’ll listen to you too, because we see and value every one of our 27,000+ people. We believe that a diverse and inclusive workplace fosters creativity, innovation, and a full spectrum of bright ideas. With a global workforce present in 70+ countries, we are dedicated to creating an inclusive environment where every voice is heard and valued, helping us all achieve more together.

Come join us, and together we can light up the future.