Network Engineer LAN​/WLAN – Cisco Enterprise

Role & Responsibilities

We’re seeking a Network Engineer with deep expertise in Cisco enterprise LAN and WLAN technologies to support a distributed campus and branch network environment. This role demands a balance of architectural thinking and hands‑on execution — someone who can design with foresight, configure with precision, and troubleshoot under pressure.

You’ll be responsible for maintaining and evolving a multi‑site Cisco network built on high‑availability, security, and scalability principles. The right engineer has seen networks break, learned from it, and knows how to build them better.

• Design, implement, and support Cisco LAN/WLAN infrastructure across campus and branch offices – including Catalyst switching, ISR/ASR routing, and Catalyst/Aironet/Meraki wireless solutions.
• Perform RF design and wireless site surveys (Ekahau or similar), ensuring optimal WLAN coverage and performance.
• Maintain and optimize Cisco DNA Center, ISE, and WLCs for centralized management and visibility.
• Conduct capacity planning, performance tuning, and QoS optimization for real‑time and data services.
• Implement and maintain network segmentation, access control, endpoint profiling and security policies in coordination with cybersecurity teams.
• Implement security protocols and ensure compliance with industry standards (e.g., WPA3, 802.1X).
• Manage redundant WAN and SD‑WAN links, ensuring optimal failover and traffic routing across sites.
• Lead network refresh, expansion, and migration projects, from design to deployment.
• Assist in capacity planning and future‑proofing wireless infrastructure for scalability and emerging technologies (e.g., WiFi 6/6E/7, IoT).
• Troubleshoot complex issues across Layer 1–7, providing deep‑dive analysis and long‑term remediation.
• Develop and maintain accurate network documentation – diagrams, configurations, and operational procedures.
• Participate in on‑call rotation and provide Tier 2/3 support for escalated network issues.
• Research, test, and recommend new LAN/WLAN technologies, network automation, and monitoring improvements.

• 5 + years of experience supporting enterprise Cisco networks (campus and branch).
• Expert‑level understanding of Cisco LAN technologies: VLANs, STP, Ether Channel, VTP, QoS, 802.1X, DHCP snooping, IP helper, etc.
• Strong knowledge of Cisco routing protocols: OSPF, EIGRP, and BGP; VRF and VXLAN experience a plus.
• Proficiency with WLAN standards (802.11a/b/g/n/ac/ax), wireless security (WPA2/3, 802.1X), and RF troubleshooting.
• Hands‑on experience with Cisco DNA Center, ISE, and WLC platforms.
• Familiarity with Cisco Meraki cloud‑managed networking is advantageous.
• Understanding of network automation and scripting (Python, Ansible, or REST APIs).
• Experience integrating with Cisco Secure Access (ISE/NAC) and implementing zero‑trust principles.
• Skilled with network monitoring and visibility tools such as Solar Winds, Net Flow, or Cisco Thousand Eyes.
• Excellent communication and documentation skills; able to translate technical insight into clear action.

• CCNP Enterprise or higher (e.g., CCIE Enterprise Infrastructure – a strong plus).
• CWNA / CWDP or equivalent WLAN certification.
• Cisco Certified Specialist in Enterprise Design or Wireless Implementation.
• Experience with Cisco DNA Center, and ISE.
• Exposure to cloud networking (Azure, AWS) and SD‑WAN technologies.
• ITIL Foundation or similar process certification – a plus.
• Knowledge of network automation tools (Python, Ansible) – is a plus.

• The network hums quietly – stable, secure, and optimized.
• Campus and branch users experience seamless connectivity, whether wired or wireless.
• Proactively identify issues before users notice them.
• Automation and visibility tools reduce manual intervention and increase uptime.
• Trusted voice in design discussions and a reliable partner during incident response.

In order to provide equal employment and advancement opportunities to all individuals, employment decisions at 3DS are based on merit, qualifications and abilities. 3DS is committed to a policy of non‑discrimination and equal opportunity for all employees and qualified applicants…