Executive Assistant I

Company: Sierra Nevada Corporation
Location: Plano
Posted on: April 2, 2026

Job Description:

Do you have a passion for all things executive administrative support, operational excellence and team leadership? We have the opportunity for you! As an Executive Assistant I, you will provide dynamic, proactive administrative support to leaders at the Sr. Vice President level and above as well as manage the daily operations of our administrative support teams. You will have oversight of business or functional-area administration teams to ensure overall adherence to corporate standards and business processes throughout the execution of daily support tasks and contribution to the completion of various projects and goals. You will act as the point of contact between the executive and both internal and external customers while providing an exceptional level of customer service. On behalf of the executive, you'll direct incoming calls, correspondence, and voice messages, accurately maintain calendar details and manage scheduling. You'll also coordinate meetings and appointments for the executive, provide timely reminders, and ensure stakeholder awareness in support of executive activities. You'll compile executive communications and presentations, and liaise with key stakeholders in various departments to ensure all executive needs are met. Your duties will also include coordinating domestic and international travel to include visa and passport requirements, and supporting large events, tradeshows and galas. The Mission Solutions and Technologies (MST) business area provides affordable, turn-key command/control, communications, integrated ISR, force protection and security solutions worldwide. The MST team has a long legacy of supporting the Department of Defense, Department of Homeland Security, commercial and international customers with years of experience in platform operations, engineering and full lifecycle management across domains – air, land, sea, space and cyber. Responsibilities: Maintain and manage complex calendars, meeting and travel schedules for C-Suite and/or Executive Vice Presidents and/or Senior Vice Presidents. Direct incoming calls, correspondence, and voice messages. Review and edit internal department communications, reports, and presentations on behalf of executives. Act as a liaison between executives and staff stakeholders. Coordinate and organize meetings, including setting up conference rooms and preparing necessary materials. Arrange domestic and international travel, including visa and passport requirements. Assist in the planning and execution of internal department events and teambuilding with efficiency. Coordinate efforts between various departments to align with executive priorities. Support onboarding and training for senior team members. Handle confidential and sensitive information with a high level of discretion. Serve as a gatekeeper, managing the flow of information to and from executives. Assist in the planning and execution of executive-level projects, including tracking project milestones, managing timelines, and ensuring timely deliverables. Identify improvements in executive office processes. Manage office operations related to executive teams, including vendor management and purchase requests. Support budget tracking and financial documentation for the executive office. Qualifications You Must Have: High school diploma or equivalent. 1 years of relevant experience in an Executive Assistant support role. 3 years of relevant experience in an Administrative Assistant support role. Advanced in Microsoft Office Suite (Word, Excel, Outlook, Teams, OneNote and SharePoint Online), Travel and Expense Platforms (such as Concur), and Project Management Applications (such as Smartsheet). Foundational knowledge with Ticketing Systems (e.g. Service Now), Enterprise Performance Measurement (EPM) Software (e.g. Workday Adaptive Planning), Enterprise Resource Planning (ERP) Systems (e.g. Cost Point), Customer Relationship Management (CRM) Software (e.g. Microsoft Dynamics). Proven interpersonal communication skills with personnel at all levels internal and external to the organization, including foreign and military officials. Ability to interpret the intent of available guidelines and use considerable judgment in applying them to individual situations. Ability to solve a variety of problems of moderate scope and complexity, and contribute to the completion of projects and goals. Ability to efficiently manage schedules, prioritize tasks, and organize activities to ensure the executive's time is used effectively. Strong verbal and written communication for interacting with high-level executives, customers, and team members, as well as preparing reports, and other correspondence. Proficiency in anticipating issues, developing solutions, and handling unexpected challenges with resourcefulness and efficiency. The ability to quickly learn new software and systems relevant to the executive's needs. Capability to handle sensitive information with the utmost confidentiality and discretion, ensuring that private company matters are safeguarded. Comfortable working under pressure and handling high-stakes situations with poise. Advanced knowledge of administrative practices including preparing expense reports and purchase requisitions and coordinating meetings, events and travel. Qualifications We Prefer: Associate’s degree in Business Administration or a related field. Experience in the Aerospace and Defense industry. Certifications such as Microsoft Office Specialist (MOS), Certified Admin Professional (CAP). This posting will be open for application for a minimum of 5 days and may be extended based on business needs. SNC offers a generous benefit package, including medical, dental, and vision plans, 401(k) with 150% match up to 6%, life insurance, 3 weeks paid time off, tuition reimbursement, and more . IMPORTANT NOTICE: This position requires the ability to obtain and maintain a Secret U.S. Security Clearance. U.S. Citizenship status is required as this position needs an active U.S. Security Clearance for employment. Non-U.S. citizens may not be eligible to obtain a security clearance. The Department of Defense Consolidated Adjudications Facility (DoD CAF), a federal government agency, handles the adjudicative aspects of the security clearance eligibility process for industry applicants. Adjudicative factors which affect the outcome of the eligibility determination include, but are not limited to, allegiance to the U.S., foreign influence, foreign preference, criminal conduct, security violations and illegal drug use. Learn more about the background check process for Security Clearances. SNC is a global leader in aerospace and national security committed to moving the American Dream forward. We’re known and respected for our mission and execution focus, agility, and disruptive and rapid innovation. We provide leading edge technologies and transformative solutions that support our nation’s most critical security needs. If you are mission-focused, thrive in collaborative environments, and want to make our country stronger with state-of-the-art technologies that safeguard freedom, join our team! SNC is an Equal Opportunity Employer committed to an environment free of discrimination. Employment decisions are made based on merit without regard to race, color, age, religion, sex, national origin, disability, status as a protected veteran or other characteristics protected by law.

Keywords: Sierra Nevada Corporation, McKinney , Executive Assistant I, Administration, Clerical , Plano, Texas