Position: Senior Network & Systems Engineer Department: Information Technology Reporting Manager: Director, Technology Status: Full-Time Job Classification: Exempt Location: Las Vegas, NV   About the A's: The A's are a baseball team founded in 1901. They have a rich history, having won nine World Series championships and 15 American League pennants. The A's are known for pioneering the "Moneyball" approach to team-building, which focuses on using statistical analysis to identify undervalued players. In addition to their success on the field, the A's also have a positive and dynamic work culture. They have been recognized twice as the Front Office Sports, Best Employers in Sports. The A’s are defined by their core pillars of being Dynamic, Innovative, and Inclusive. Working for the A's offers the opportunity to be part of an innovative organization that values its employees and strives to create a positive work environment. Description: The Senior Engineer, Network & Systems is responsible for the design, implementation, administration, security, and support of the organization's enterprise network and server infrastructure. This role serves as a technical leader, ensuring the reliability, scalability, and performance of critical systems supporting business operations, stadium technology, broadcasting, guest services, and corporate functions. The ideal candidate combines deep expertise in networking, systems administration, cybersecurity, cloud technologies, and infrastructure architecture. This role will work closely with various business units to assist with new initiatives and projects. In this role, you are expected to implement technology best practices while also emphasizing a continuous improvement mindset.   Responsibilities: * Design, deploy, manage, and optimize enterprise LAN, WAN, Wi-Fi, and data center networks. * Administer core network technologies including routing, switching, firewalls, VPNs, SD-WAN, and network access control solutions. * Lead network architecture planning for stadium operations, corporate offices, and event-based environments. * Monitor network performance, troubleshoot complex issues, and implement proactive improvements. * Ensure high availability and redundancy for mission-critical systems. * Manage Windows and Linux server environments, virtualization platforms, and storage systems. * Administer Active Directory, Azure Active Directory, DNS, DHCP, Group Policy, and identity management solutions. * Maintain server, application, and database infrastructure supporting business and operational systems. * Oversee backup, disaster recovery, and business continuity planning. * Implement and manage cloud infrastructure in Microsoft Azure and/or AWS environments. * Implement security best practices across network and server environments. * Manage endpoint protection, vulnerability remediation, patch management, and security monitoring. * Collaborate with internal stakeholders and external partners to maintain compliance with organizational and industry security standards. * Participate in incident response, forensic investigations, and security audits. * Lead infrastructure projects from planning through deployment and operational support.  * Evaluate emerging technologies and make recommendations aligned with organizational goals.  * Coordinate with vendors, consultants, contractors, and technology partners.  * Develop technical standards, documentation, diagrams, and operating procedures.  * Participate in on-call support rotations and provide event-day technical support when required.  * Maintain accurate asset inventories and lifecycle management plans.  * Other duties as assigned. Qualifications/Requirements: * Bachelor's degree in Information Technology, Computer Science, Engineering, or related field, or equivalent experience.  * 7+ years of progressive experience in enterprise network and systems engineering.  * Enterprise networking expertise with Cisco (experience with Aruba, Juniper, Palo Alto, Fortinet, or similar platforms also preferred); industry certifications such as CCNP, Palo Alto PCNSE, Fortinet NSE, VMware VCP, Microsoft Azure Administrator, or AWS Solutions Architect preferred. * Strong experience with VMware, Hyper-V, or comparable virtualization technologies.  * Advanced knowledge of Windows Server and Linux administration.  * Experience with Azure, AWS, or hybrid cloud environments.  * Strong understanding of cybersecurity principles and infrastructure hardening.  * Experience with scripting and automation using PowerShell, Python, or similar tools.  * Excellent troubleshooting, analytical, and communication skills.  * Willing and able to work a non-traditional schedule, including evenings, weekends, and holidays, as required to support events and critical business operations. * Willingness to travel as needed, including to conferences, conventions, Spring Training in Arizona, and Athletics game operations in West Sacramento during the 2026 and 2027 seasons. * Willingness to travel throughout the Las Vegas area as needed to support business operations across multiple locations. * Willing and able to lift and install network and server equipment up to 50 pounds.  * Willing and able to work in data centers, telecommunications rooms, and stadium operational environments. * Experience supporting sports, entertainment, hospitality, venue, or large public-facing environments preferred. * Familiarity with broadcast, IPTV, digital signage, AV-over-IP, or stadium technology systems preferred. * Experience with large-scale wireless deployments and high-density network environments preferred. The A’s Social Impact & Belonging Statement: Social Impact & Belonging are in our organizational DNA. Our commitment to these values is unwavering – on and off the field. Together, we continue to build an inclusive, innovative, and dynamic culture that encourages, supports, and celebrates belonging and amplifies all voices. Combining a collaborative and innovative work environment with talented team members, we've created a workforce in which every team member has the tools to reach their full potential. Equal Opportunity Consideration: We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, sexual orientation, age, disability, gender identity, marital or veteran status, or any other protected class.