A Cisco Field Engineer is responsible for installing, configuring, maintaining, and troubleshooting Cisco networking equipment, such as routers, switches, and firewalls, at client locations. They provide on-site technical support, assist with network infrastructure upgrades, and ensure network stability and security. This role often requires extensive travel and direct interaction with clients to resolve technical issues and optimize network performance. Strong networking knowledge, problem-solving skills, and Cisco certifications (such as CCNA or CCNP) are typically required.