Systems Administrator, Global Infrastructure

Systems Administrator - Global InfrastructureAbout the team:The Technical Operations team is distributed across the globe and handles a wide variety of responsibilities, from providing tech support to architecting long-range build-out and day-to-day operations at our seven global data centers. We have well over 8,000 servers, which process over a million of ad serving requests per second (billions per day). All production systems run on Linux, with employees running roughly 70% Mac and 30%Windows laptops.As part of Technical Operations, the CorpIT Infrastructure team at AppNexus is responsible for the internal networks and systems that support our global corporate offices. Items under our purview consist of wired & wireless networks and their associated core network services, global video-conferencing, phone systems and our corporate VPN services. We select hardware, design our networks, implement and support them, which gives our SAS exposure to systems and techniques that they wouldn’t find at most companies. This is a fast-paced and demanding environment where you will have a chance to work with and help shape a rapidly growing, world class IT infrastructure.About the job:Manage and maintain our existing internal wired, wireless networks and servicesArchitect new networks and prepare existing systems for massive growthAutomate deployment related and repetitive tasks using scripting languages, puppet, and/or other automation frameworksProactively monitor and maintain all internally facing systems and servicesReport to IT Management on service levels achieved and on-time delivery of serviceParticipate in 24X7X365 support of critical Corporate systemsWrite and update documentation on all systems and servicesAct as escalation point for Help Desk technicians regarding corporate IT systemsWe’re in search of troubleshooters and those who love to tinker and innovate with technologyAbout your skills:3+ years of experience with TCP/IP Networking, preferably using Cisco, Juniper or Fortinet. Having worked in a multi-vendor environment is a plus.2+ years of experience managing wired and wireless networks.2+ years of experience using Unix/Linux2+ years of experience with Microsoft Hyper-V or VMware2+ years of experience managing a VPN infrastructureAbility to participate in an on-call rotationFamiliarity with Windows or a strong desire to learnExcellent interpersonal, written and verbal (phone) communication skillsExperience managing PBX systemsExperience managing video-conferencing systemsAbility to function as an individual contributor or as a team member depending onproject/situationDesired but not required: Bachelor's degree in CS or MIS Experience with systems automation (puppet, chef, cfengine, etc)Good documentation skillsMore about you:You are passionate about a culture of learning and teaching. You love challenging yourself to constantly improve, and sharing your knowledge to empower others.You like to take risks when looking for novel solutions to complex problems. If faced with roadblocks, you continue to reach higher to make greatness happen.You care about solving big, systemic problems. You look beyond the surface to understand root causes so that you can build long-term solutions for the whole ecosystem.You believe in not only serving customers, but also empowering them by providing knowledge and tools.Learn. Teach. Build.AppNexians make greatness happenJoin our communityAppNexus is proud to offer equal opportunity in all aspects of employment. We strive to foster a diverse, inclusive and engaging work environment. We welcome applications from all candidates and look forward to receiving yours. Our diversity in action:Partnering with Path Forward to offer returnships to help caregivers reenter the workforceSharing feedback openly through roundtable discussions on how to make progress on our Diversity & Inclusion goalsCelebrating our diversity with affinity groups (including OutNexus, AppNexus Women’s Network, AppNexus Latino alliance and AppNexus Black Alliance to name just a few!)


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