Application Support Engineer
Denver Metropolitan Area, COFull-time$71k–$126kPosted Jun 16, 2026
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Application Support EngineerFull-timeCompany DescriptionArista Networks is an industry leader in data-driven, client-to-cloud networking for large data center, campus and routing environments. What sets us apart is our relentless pursuit of innovation. We leverage the latest advancements in cloud computing, artificial intelligence, and software-defined networking to provide our clients with a competitive edge in an increasingly interconnected world. Our solutions are designed to not only meet the current demands of the digital landscape but to also anticipate and adapt to future challenges.At Arista we value the diversity of thought and perspectives that each employee brings to the table. We believe that fostering an inclusive environment, where individuals from various backgrounds and experiences feel welcome, is essential for driving creativity and innovation.Our commitment to excellence has earned us several prestigious awards, such as Best Engineering Team, Best Company for Diversity, Compensation, and Work-Life Balance. At Arista, we take pride in our track record of success and strive to maintain the highest standards of quality and performance in everything we do.Job DescriptionWho You’ll Work WithThe TSE works in a non-silo environment, supporting all of Arista’s products. He or she will work directly with both the customer and (when needed) the software and hardware development teams. The TSE team also performs all their own recreates in a dedicated lab environment.Giving customers direct access to a high-level engineer streamlines the support process and raises customer satisfaction.What You’ll DoRespond to customer product inquiries via telephone or in written, internet-based email.Resolve customer concerns raised during installation, operation, maintenance or product application or compatibility matters.Interpersonal skills and product knowledge and expertise are critical to responding to daily customer-centric activities.Troubleshoot problems with hardware equipment and software applications and recommends corrective action.Document customer communication and recurring technical issues to support product quality programs and product development.QualificationsThe ideal candidate possesses the ability to troubleshoot complex and dynamic customer environments while balancing the communications needs of each case. A strong analytical mind is required, as is the ability to triage. As we are continually releasing new features and products, a high aptitude for both learning and teaching are required. Our engineers work closely with other members of Customer Engineering as well as both Software and Hardware development—both in diagnosing problems as well as communicating them in multiple technical contexts. Thus, excellent written and verbal communication skills are a must, as is a collaborative approach.Prior experience of 5+ years working in a Support/Technical Assistance Center (TAC) teamLinux and shell scripting skills such as log reading and performance testing high desired.Networking knowledge preferred (HTTP, TCP, IP, subnetting)Experience supporting a cloud serviceGeneral familiarity with concepts like multi-tenancy, password management, common access issues that customers might have with a cloud serviceExperience with REST apis, swagger and JSONExperience using / building REST clients (curl, postman, python)Good understanding of MySQLExperience debugging web applications using browser developer tools (e.g. console, network request log, debugger, etc.);Familiarity with Javascript a plus.Debug / troubleshoot the customer’s environment, collect additional information about the problem and resolve network performance issuesQuickly assess and understand customers issues and business impactAbility to reproduce customer reported issues in the lab environment, work with development and QA to verify and fixes before they are rolled out to our...