Seeking a network engineer to design, install, troubleshoot, and support campus-wide networking infrastructure, including routing, switching, firewalls, wireless, and optical networks. Responsibilities include configuring network devices, analyzing performance, collaborating with internet providers, participating in infrastructure design, and mentoring junior staff. Candidates should have 3-5 years of experience, knowledge of TCP/IP, BGP, OSPF, scripting with Python/Ansible, and experience with various network operating systems. Preferred qualifications include advanced certifications and optical transport expertise. The role offers a salary range of $138,300-$160,300, comprehensive benefits, and opportunities for professional growth. The position requires excellent communication, ability to manage multiple tasks, and willingness to respond to off-hours incidents. Caltech is an equal opportunity employer committed to diversity and inclusion.