Executive Administrator

Executive Administrator to the Chief of Staff (CoS)

Location: Onsite – Pleasanton, California

Reporting to: Chief of Staff

At STN
, we don't just adapt to the digital future, we engineer it. Our mission is to help organizations thrive in a rapidly evolving technology landscape through strategic insight, cutting‑edge solutions, and a security‑first mindset. We provide end‑to‑end services spanning cloud consulting, AI infrastructure, and enterprise security, enabling secure, scalable, and future‑ready transformation.

As trusted advisors, we align IT investments with business outcomes that drive performance and growth, starting with deep strategic engagement and delivering tailored solutions built for long‑term impact.

Our approach is innovation‑led and rooted in cybersecurity, with a focus on leveraging the right technologies to solve real‑world challenges. We invest in our people and foster a culture of growth, inclusion, and purpose because we believe empowered teams build transformative technology.

We are seeking a highly organized, proactive Executive Administrator to directly support the Chief of Staff. This is a dual‑purpose role: it combines the full scope of traditional executive assistance with hands‑on support for the execution of cross‑functional projects and initiatives the Chief of Staff drives across the business.

The ideal candidate is a trusted right hand — someone who anticipates needs, manages competing priorities with discretion, keeps projects moving, and operates comfortably amid the ambiguity and pace of a scaling company. You will have visibility in nearly every part of the business and play a meaningful role in helping leadership operate effectively.

• Track action items, deadlines, and deliverables across multiple concurrent projects and initiatives, following up with internal and external stakeholders to keep work on schedule.
• Build and maintain project trackers, status dashboards, checklists, and timelines; flag risks, slippage, and dependencies to the Chief of Staff proactively.
• Coordinate cross‑functional work streams spanning legal/contracts, finance, insurance, HR, infrastructure, and commercial teams — ensuring the right people have what they need to deliver.
• Prepare, format, and organize documents, presentations, spreadsheets, and reports; draft first versions for the Chief of Staff’s review.
• Maintain organized filing systems and shared work spaces for contracts, vendor records, project files, and reference materials so information is easy to locate.
• Conduct research, gather data, and assemble briefing materials to support decision‑making and meeting preparation.
• Help manage recurring operational processes (e.g., approvals, onboarding logistics, vendor compliance follow‑ups) and recommend improvements over time.

• Calendar Management: Own and optimize the Chief of Staff’s calendar — scheduling meetings, resolving conflicts, protecting focus time, and ensuring the day runs smoothly.
• Communications: Manage and triage email and messages, draft and proofread correspondence, and serve as a professional point of contact for internal colleagues and external partners.
• Meeting Coordination: Schedule and prepare for meetings — agendas, materials, logistics, and technology — then capture notes and track follow‑up items to completion.
• Travel & Expenses: Arrange domestic and occasional international travel, build detailed itineraries, and prepare and submit expense reports accurately and on time.
• Event & Offsite Support: Help plan and coordinate team meetings, leadership offsites, customer‑facing events, and company functions.
• Office & Logistics: Coordinate shipping/receiving, supplies, and on‑site needs as required; liaise with vendors and service providers.
• Confidentiality: Handle sensitive business, legal, financial, and personnel information with the utmost discretion and professionalism.

• 3+ years of experience as an Executive Assistant, Administrative Assistant, or in a comparable coordination/operations role supporting senior leadership.
• Exceptional organizational and…