Full-Time

Executive Assistant

Posted on 10/31/2025

Andreessen Horowitz

Andreessen Horowitz

201-500 employees

Venture capital firm investing in startups

Compensation Overview

$149k - $165k/yr

+ Discretionary bonus programs + Carry program

San Francisco, CA, USA

In Person

In-office presence 3+ days per week required in San Francisco, CA.

Category
Administrative & Executive Assistance (3)
, ,
Required Skills
Word/Pages/Docs
Excel/Numbers/Sheets
PowerPoint/Keynote/Slides
Requirements
  • 5+ years of high level experience supporting multiple senior level executives
  • A strong team player, who thrives in a collaborative setting and works well within a matrixed environment, poised and able to work with individuals at all levels of the organization
  • Proactive, positive and personable with excellent communication skills and an upbeat, “can do” attitude- willing to take initiative with confidence
  • Resilient, with ability to manage multiple projects and deliver quality work to deadlines
  • Discretion, diplomacy and excellent judgment; high degree of integrity when dealing with confidential and sensitive information
  • Exceptional attention to detail
  • Strong calendar management and prioritization skills
  • Advanced proficiency with Gmail, Google Calendar as well as key applications such as Word, Excel, Powerpoint and Zoom
  • You are comfortable working in a remote environment and working independently
  • Low ego, high empathy, and the capacity to collaborate effectively with diverse teams
Responsibilities
  • Build and cultivate long-term relationships
  • Handle highly confidential information and documents with discretion and confidentiality
  • Manage and maintain multiple executive calendars, including recurring meetings, prioritizing appropriately and using good judgment in offering solutions to complex scheduling and meeting planning needs
  • Meetings will include executive meetings, off-sites and ongoing staff meetings. This includes but is not limited to, attendee communications, venue management/coordination, audio/video set-up and management as needed, travel, catering and program material preparation
  • Proactively manage communication, and respond to urgent inquiries from internal / external stakeholders on the executives’ behalf
  • Process and track travel & expenses in a timely manner for the executives
  • Operate with exceptional attention to detail. Anticipate potential changes or shifts in priorities amidst simultaneous demands for attention
  • Organize and compile information to facilitate exec presentations
  • Track and drive completion of key deliverables, proactively following up on outstanding items as needed
  • Provide innovative and creative methods for continued improvements to administrative processes as the company scales

Andrewsen Horowitz (a16z) is a venture capital firm that provides funding and strategic help to startups. It invests across many sectors, including AI, fintech, biotech, crypto, enterprise, consumer, games, and infrastructure, and it supports companies from seed stages through to IPOs. The firm’s product is capital in the form of equity stakes in startups, along with guidance, networks, and operational support to help these companies scale. Unlike many investors who focus on a single niche, a16z combines a very large capital base (about $43 billion in committed capital) with a broad portfolio and a long-term, hands-on approach to backing entrepreneurs, aiming to grow companies that can become industry leaders while delivering strong returns for its investors.

Company Size

201-500

Company Stage

N/A

Total Funding

$291.3B

Headquarters

Menlo Park, California

Founded

2009

Simplify Jobs

Simplify's Take

What believers are saying

  • Raised $2.2 billion crypto fund in May 2026 signaling sector commitment.
  • Led $16 million seed in Pit on May 7, 2026, accelerating AI enterprise adoption.
  • Participated in Ciridae's $20 million seed generating seven-figure revenue in 2025.

What critics are saying

  • Pit investment competes with OpenAI and Anthropic, eroding market share in 12-24 months.
  • Overexposure to AI seeds like Pit triggers 20-30% AUM slash via LP withdrawals in 18-36 months.
  • Pit recruits talent from portfolio, causing brain drain in 3-6 months.

What makes Andreessen Horowitz unique

  • a16z deploys specialized teams for AI, fintech, and bio/health sectors.
  • Firm manages $46 billion AUM as of July 2025 across multi-stage investments.
  • Launched $600 million American Dynamism fund in 2023 for defense and space.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

401(k) Retirement Plan

Paid Vacation

Paid Sick Leave

Flexible Work Hours

Company News

Intellectia.AI
Apr 15th, 2026
Mintlify raises $45M at $500M valuation for AI-powered software documentation tools

Mintlify has raised $45 million in a Series B round led by a16z and Salesforce Ventures, valuing the company at $500 million. The startup provides AI-powered tools that help businesses generate and maintain software documentation, including FAQs and user guides. Mintlify currently serves approximately 20,000 companies using its AI system for documentation purposes. The funding underscores growing investor interest in AI technologies for software documentation, a sector increasingly reliant on automation to streamline technical writing and maintenance processes.

TechCrunch
Apr 14th, 2026
AI-powered risk platform Pillar raises $20M seed led by a16z to automate commodity hedging

Pillar, a financial risk management platform for commodity-driven businesses, has raised $20 million in a seed round led by Andreessen Horowitz. Crucible Capital, Gallery Ventures and Uber CEO Dara Khosrowshahi participated, bringing total funding to $23 million. Founded in 2023, Pillar automates hedging processes for companies in metals, food and airlines. The platform uses AI to analyse data from contracts, cash flows, inventories and messaging apps to manage exposure across commodities, foreign exchange and freight. It builds and adjusts hedge portfolios automatically based on market conditions and risk tolerance. Pillar's clients include Shibuya Sakura Industries, Sigma Recycling and United Metals Solution Group. The company aims to make institutional-grade risk management tools accessible to small and medium-sized enterprises.

SiliconANGLE Media
Apr 14th, 2026
Orbital raises a16z funding to test space-based AI data centers in orbit by 2027

Orbital, a startup building space-based AI data centres, has raised an undisclosed amount in funding led by Andreessen Horowitz's a16z Speedrun. The company plans to launch its first test mission, Orbital-1, in April 2027 to demonstrate proof-of-concept for orbital AI infrastructure. Orbital aims to address AI's energy crisis by deploying satellites in sun-synchronous orbits 1,200 miles above Earth, running entirely on continuous solar power whilst using radiative cooling to dissipate heat. Each satellite will house Nvidia-powered GPU clusters designed for AI inference workloads, with latency comparable to terrestrial fibre connections at 20 to 40 milliseconds. The company is opening Factory-1, a research facility in Los Angeles, to manufacture its compute satellites. Rather than attempting repairs in orbit, Orbital will replace satellites at end-of-life with controlled deorbit and burn-up on reentry.

PR Newswire
Apr 9th, 2026
Factory leads $4.7M cultural capital investment in Kalshi alongside athletes and entertainers

Factory Holdings, a family office platform for athletes and entertainers, led a $4.7 million investment into Kalshi's Series E round alongside a16z's Cultural Leadership Fund. The investment united 74 investors including athletes Marshawn Lynch, Diana Taurasi, Breanna Stewart and Connor McDavid. The round valued Kalshi, a prediction markets platform, at approximately $11 billion and included participation from Andreessen Horowitz, Sequoia Capital, CapitalG and Charles Schwab. Factory exceeded its original allocation target and closed the investment in roughly 2.5 months. Founded by Keenan Beasley, Factory provides athletes, entertainers and entrepreneurs access to institutional-quality private investments traditionally reserved for legacy family offices. The platform operates across wealth advisory, private investments and business building, aiming to help cultural leaders gain ownership in platforms they help shape.

GitButler
Apr 8th, 2026
We’ve raised $17M to build what comes after Git

GitButler has raised a Series A round to accelerate developing the infrastructure for how software gets built next

INACTIVE