Administrative & Office Operations Assistant

About Brain Co.

Brain Co. is an Applied AI startup founded by Elad Gil and Jared Kushner, and backed by many of Silicon Valley’s leading builders — including Patrick Collison (CEO of Stripe), Andrej Karpathy (Cofounder of OpenAI), Mike Krieger (CPO of Anthropic), Kevin Weil (CPO of OpenAI), and Aravind Srinivas (CEO of Perplexity).We are building an AI platform and applications for the world’s most important institutions - delivering impact on real-world problems. Our progress so far

• Automated construction permitting for a sovereign government → 80% faster, unlocking $375M+ in value

• Optimized supply chains for a leading global energy company → 30% lower cost, 99% reliability, preventing $100M+ in losses

• Streamlined hospital patient care across national health systems → 40% better outcomes, 80% less admin work

• Raised a $30M Series A from top investors

• Built a team of 40+ AI experts from Tesla, Google DeepMind, NVIDIA, and Databricks

At Brain Co., your work will be deployed in the real world, not stuck in research. We move fast, with more demand than we can serve, and are looking for exceptional people to take ownership from day one.

About The Role

We’re growing quickly and looking for an Administrative & Office Operations Assistant to help keep our team organized, efficient, and thriving. This full-time role blends executive support (starting with our Head of Engineering) and office operations ensuring the smooth functioning of our office environment.

You’ll work closely with our wonderful Executive Assistant to streamline workflows, support leadership, and create systems that bring order and joy to a fast-moving startup environment. If you’re energized by variety, love problem solving, and enjoy making things (and people) work better, this is the perfect role for you.

What We’re Looking For

• 3+ years in administrative support supporting senior leaders. Bonus if you haveoffice operations/ workplace coordination experience

• Operationally sharp; you anticipate needs and drive solutions without direction

• Experience using modern tools (G Suite, Slack, Notion, Gusto) and/or eager to learn

• Adaptable, reliable, and thrive in a startup environment that moves fast

• Hands-on, detail-driven, and proud of creating order, warmth, and excellence in the workspace

• Full-time Onsite role based in our San Francisco HQ

What You’ll Do:

• Administrative Support

  • Partner with our Head of Engineering to manage scheduling, travel, and team logistics

  • Support leadership meetings: agendas, notes, follow-ups, and coordination

  • Provide EA coverage during time off

• Office Operations

  • Keep the office running smoothly — manage supplies, vendors, facilities, and space needs

  • Able to lift up to 25 lbs

  • Serve as the on-site point of contact for day-to-day office needs and troubleshooting

  • Manage office systems, track budgets, and optimize processes as we grow

  • And jump in where needed!

• People & Culture

  • Help foster a welcoming, high-energy culture from onboarding and welcome kits to team events

  • Partner with the EA on internal celebrations, offsites, and other moments that make our workplace special

• Meals & Snacks

  • Manage our meal and snack programs, including coordinating vendors, tracking preferences, and staying on budget

Why Join Us

• Be at the center of the action. You’ll work closely with our leadership and help shape how the company operates day-to-day as we scale globally.

• Learn from the best. You’ll partner directly with Emilie, our Executive Assistant, who brings extensive experience supporting senior executives across high growth startups. She’ll be a hands-on mentor as you grow in this role and expand your operational scope..

• Work alongside exceptional people. Our team includes builders from Tesla, DeepMind, Robinhood, Databricks, and other world class organizations.

• Make an outsized impact. In this role, your work directly influences how efficiently our teams execute, communicate, and deliver.

• Thrive in a culture built on speed, curiosity, and care. We move fast, stay humble, and take pride in creating an environment people love to work in.

Benefits

• Competitive salary plus equity

• Daily lunches

• Commuter benefits

• 401(k)

• Medical, Dental and Vision

• Unlimited PTO