Senior Executive Assistant to Founder & CEO

This is a career-defining opportunity to act as the strategic right-hand and Executive Assistant to our Founder and CEO, Joris Poort. This role is not only about administrative support; it's about leverage and impact. You will be the force multiplier who ensures the CEO's time, focus, and energy are optimized to drive Rescale's vision forward.

You will operate at the intersection of technology, business strategy, board dynamics, and customer engagement. You'll have a front-row seat—and a critical role—in how a category-defining company is built. The ideal candidate is a proactive, intellectually curious, and exceptionally organized individual who can operate with precision and grace under pressure. You will be a trusted advisor, a master of execution, and the key to unlocking the next level of effectiveness for our CEO and the entire executive team.

At Rescale, we're on a mission to accelerate the future. We believe that the most significant breakthroughs in science and engineering shouldn't be constrained by the ability to leverage advanced computing, access specialized data, and deploy the latest AI tools. Here’s how we're changing the game:

• Solve Grand Challenges: Our platform is the backbone for innovators tackling humanity's toughest problems. Your work will directly support R&D in aerospace, life sciences, automotive, energy, and more.

• Build Cutting-Edge Tech: You'll help develop a sophisticated platform that unifies the world's most powerful cloud supercomputers, advanced data tools, and applied AI to accelerate complex modeling and simulation.

• Power the World's Best: We're the trusted partner for global leaders like Arm, General Motors Motorsports, Samsung, SLB, and the U.S. Department of Defense. The work you do here will have a massive, immediate impact.

Learn more about Rescale: Company Website - Rescale Leadership Team - Rescale Investors

• Location: Bay Area (hybrid) or Denver/Boulder (hybrid); US remote considered for exceptional candidates

• Travel: <10% (team offsites, special events)

What you’ll do

Executive Leverage & Time Allocation

• Maximize CEO leverage: Own time, priorities, and follow-through across the CEO’s agenda. Own the CEO’s calendar as a capital allocation problem—design weeks for highest ROI; create focus blocks; pre-read gates; hard trade-offs.

• Meeting management: Prep, brief, and debrief the CEO for key meetings; drive pre-work, set decision frames, capture actions, ensure follow-through.

• Comms management: Manage communications triage (email/Slack/Text) with clear SLAs and judgment about what must reach the CEO.

• Operate with urgency: Be highly reliable and available, including after hours, and during travel time zones or other critical periods.

• Exercise impeccable judgment: Handle highly sensitive information with absolute discretion.

• Bias to action: Roll up sleeves—no task too big or small; own outcomes end-to-end.

• Own the calendar: Manage a dynamic, high-volume schedule; screen requests, set priorities, and resolve conflicts proactively.

• Run meetings & travel: Coordinate domestic/international meetings and end-to-end travel (time zones, visas, itineraries, briefing packs, comms).

• Exercise impeccable judgement: Deliver diverse, confidential work with tact, initiative, and anticipation.

• Deliver at pace: Ship a high volume of work with minimal guidance; respond rapidly to time-critical issues.

Executive Operating System

• Drive operational excellence: Partner with senior leadership to design and run the executive operating cadence that increases throughput.

• Build and run the cadence for staff meetings, weekly exec reviews, quarterly OKR checkpoints, and off-sites.

• Maintain decision logs, action trackers, and “single source of truth” in a well-managed up to date collaboration doc system.

• Implement automations and AI agents (e.g., GPT + Zapier) for recurring workflows (agenda packs, trip briefs, follow-ups).

Board, Investor, and Special Events

• Own logistics for board meetings and corporate events; coordinate materials and secure-time distribution; manage cap-table sensitive workflows in close partnership with Legal/Finance.

• Partner with Comms/IR on investor and strategic partner interactions.

Customers & External

• Orchestrate CEO involvement in top accounts and strategic partners; ensure briefs, goals, and follow-ups convert to pipeline or product signal.

• Support external speaking and PR engagements in close partnership with Marketing leadership.

Personal Support

• Manage personal calendar intersections and select personal admin so the CEO’s professional commitments are uninterrupted.

• Assist with personal tasks to ensure the CEO’s personal life runs as smoothly as their professional one.

Qualifications

Required

• 5+ years directly supporting a C-level executive (founder/CEO preferred) in a high-growth tech company.

• Track record running a complex, fast-changing calendar and communications stack with excellent judgment and confidentiality.

• Strong operator: you’ve built lightweight systems/cadences that improved executive and team throughput.

• Fluency with Google Workspace and modern collaboration tools (Slack, etc), plus automation (Zapier, etc) and AI tools (ChatGPT, Gemini, etc); willingness to own implementation.

• Comfortable working with urgency and after-hours needs aligned to CEO schedule, travel and critical events.

Nice to have

• Experience partnering on board meetings, investor interactions, or enterprise customer exec engagements.

• Curiosity about technology, science, or engineering; ability to parse technical briefs and extract what matters.

Who you are

• A Systems Thinker: You don't just complete tasks; you build scalable processes and systems to improve efficiency for the entire executive office.

• Intellectually Curious: You are genuinely interested in what Rescale does and are driven to understand our business, our customers, and our market.

• Owner's Mentality: You take immense pride in your work and demonstrate a high degree of ownership and accountability. You treat the CEO's priorities as your own.

• Exceptional Judgment & Integrity: You consistently demonstrate sound judgment, especially when navigating complex situations with limited information. You are the vault and handle confidential information with absolute discretion.

• Proactive & Resourceful: You are a forward-thinker who anticipates needs and solves problems before they arise. You have a "figure it out" mentality.

• High Emotional Intelligence: You build strong, trust-based relationships and interact with people at all levels with diplomacy, professionalism, and grace.

• Unflappable & Poised: You maintain a calm and positive demeanor in a fast-paced, high-pressure environment. You are resilient, adaptable, and thrive on challenges.

Tools you’ll run

Google Workspace, Slack, Zapier, ChatGPT/Gemini, etc. You’ll recommend and implement better next-gen AI-based tools where it helps.

Work style & availability

This role supports a global CEO schedule. Expect core overlap with Pacific Time and high responsiveness is expected during all hours including evenings and weekends. Core schedule may shift to early/late windows during travel weeks or critical events. We understand that this role can be demanding at times and are prepared to offer appropriate compensation that will match the time, energy, and effort needed to be successful.

Rescale is an equal opportunities employer and welcomes applications from all qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation or age. As part of our standard hiring process for new employees, employment with Rescale will be contingent upon successful completion of a comprehensive background check. Here at Rescale, we are committed to being transparent in our policies around candidate privacy. For more details on the information Rescale collects in your application, please view the Rescale Applicant Privacy Policy here.