Executive Assistant & Office Manager
About The Position
Ostium is building a transparent, permissionless trading stack onchain for anyone with a digital wallet to trade stocks, commodities, currencies, and crypto. They have raised over $27.9M from various investors. The company is looking for an experienced and highly resourceful Executive Assistant & Office Manager to support the executive team. This is a high-trust, high-visibility role requiring the individual to protect executives' time, maintain their focus, and ensure the office runs flawlessly. The ideal candidate will have supported C-suite executives or senior management in a fast-paced, high-standards environment, demonstrating sound judgment, discretion, and proactive instincts. This role also involves close collaboration with Ostium's Operations team.
Requirements
- 5-10 years of experience supporting C-suite executives and senior management
- Proven track record managing complex calendars and travel logistics for senior executives
- Exceptionally organized, detail-oriented, and proactive — you solve problems before they surface
- Polished communicator across all mediums; high EQ and strong relationship-building skills
- Calm under pressure, discreet, and trustworthy with sensitive information
- Genuinely excited to be in the NYC office five days a week
- Proficient in Google Workspace, Slack, Notion, and standard expense management tools; quick to adopt new systems
Nice To Haves
- Background in investment banking, a hedge fund, or a high-growth startup preferred
- Bachelor's degree preferred
Responsibilities
- Own and manage the executive team's complex calendars, inboxes, and correspondence — prioritizing ruthlessly and closing loops without being asked
- Act as gatekeeper, protecting executives' time and filtering requests with sound judgment
- Prepare for and coordinate meetings across investors, partners, and internal teams including agendas, pre-reads, and follow-ups
- Arrange complex domestic and international travel with seamless logistics
- Prepare and submit expense reports accurately and on time
- Handle all sensitive and confidential information with absolute discretion and good judgment
- Serve as the face of Ostium's NYC office — welcoming guests and setting the tone for our culture
- Own all office operations: facilities, vendors, supplies, equipment, and day-to-day logistics
- Manage incoming mail and deliveries
- Support employee onboarding, team events, and off-sites
- Manage office budgets, invoices, and service contracts
- Partner with the operations team to ensure seamless day-to-day support across the office
- Take on ad hoc projects and operational needs as they arise
Benefits
- Competitive compensation package
- Equity in a well-capitalized, high-growth company
- Collaborative environment with a highly skilled team
- Professional development opportunities
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What This Job Offers
Job Type
Full-time
Career Level
Senior
