Executive Assistant / Office Manager

About Alljoined

Alljoined is creating a future where humans are fully understood and augmented by technology. Our work solves the communication bottleneck between humans and computers by decoding thoughts from the brain, entirely non-invasively. We apply deep learning research to large-scale EEG datasets to decode multimedia input, eventually moving to internal thought. We are state-of-the-art in our capabilities and fully vertically integrated. Our goal is to develop a general consumer interface that completely transforms how we live our lives.

We are actively growing our world-class team of researchers and operators to build the next interface to improve individual lives and the well-being of society as a whole.

About the Role

As anExecutive Assistant & Office Manager, you will support our team and keep the company operating smoothly across administrative and operational domains. You will own day-to-day office operations at our new San Francisco office, while also managing travel logistics, investor scheduling, calendar workflows, and team events.

This is a unique opportunity to work closely with a technical founder at an early-stage deep-tech company and gain a front-row seat to how a frontier AI and neurotechnology company is built. You will collaborate with the operations lead and the broader team to anticipate needs, reduce friction, and develop lightweight systems that make the company more effective. This is an in-office role based in San Francisco, five days per week.

About You

• 1-3 or more years of relevant experience in executive assistance, office management, operations, hospitality, customer service, recruiting coordination, or startup support.

• High ownership, strong follow-through, and the ability to anticipate needs without waiting to be told every next step.

• Excellent judgment in calendar management, inbox management, written communication, and handling confidential information.

• Strong attention to detail without losing sight of broader company priorities.

• Comfort working in a fast-paced startup environment where priorities may change quickly.

• A proactive, resourceful, low-ego approach and a strong service orientation.

• The ability to turn broad objectives-such as protecting the CEO’s strategy time-into practical systems and better working rhythms.

• Excellent organizational and logistical skills across meetings, travel, team events, office operations, onboarding, and recruiting coordination.

• Excitement about AI, neuroscience, brain-computer interfaces, or other frontier technologies.

• Willingness to work from our San Francisco office five days per week.

Experience supporting a founder, CEO, investor, or technical executive is a plus, as is experience at an early-stage startup. Familiarity with tools such as Google Workspace, Slack, Ashby, Notion, and Linear is also helpful.

Benefits

• Competitive equity compensation at a seed-stage startup

• Options for housing support

• Visa sponsorship

• Health insurance