Arvana

Sitefire is a marketing suite for the agentic web that helps brands reach AI agents by measuring AI visibility and identifying what gets cited. It enables brands to ship brand-aware content that earns prominence within AI-driven discovery and citation ecosystems. The company was founded in 2025 by Jochen Madler and Vincent Jeltsch, who met at Technical University of Munich, and has since participated in Y Combinator Winter 2026 with Jon Xu as the primary partner. Sitefire currently has a small team of two and is hiring its first engineer in Munich. Its European client roster includes BMW Group, DWS Xtrackers, AVI Medical, GEV, Wemolo, and Jerry.ai.

Aleph is AI-native and designed to be the always-on decision layer for modern businesses, offering real-time data collaboration for finance teams and automating reporting, variance analysis, and forecasting. It operates as a global digital advertising powerhouse serving 150+ countries, connecting over 26,000 advertisers to a 3 billion consumer audience and partnering with major platforms such as TikTok, X, Microsoft, Amazon, Pinterest, Reddit, Spotify and Google. Its mission is to make the digital world accessible to all, while connecting global brands with local audiences in emerging markets and empowering businesses and individuals through its Digital Ad Expert education platform. The company also facilitates cross-border payments and credit underwriting through Local Payments by Aleph, supported by a team of over 1,500 digital experts in 75+ offices and backing from investors including CVC Partners, Mercado Libre, Sony, X (formerly Twitter), and Snap. Aleph serves a spectrum of clients from small startups to multinational corporations, boasting a trial-to-customer conversion rate exceeding 90%.

Ambi is building the interface for the AI era - software and hardware that move at the speed of thought. We're creating a living memory system that turns conversations, meetings, and daily signals into one connected knowledge base, across phone, watch, and desktop. Backed and early-stage, headquartered in San Francisco with hybrid flexibility - this is a ground-floor seat on category-defining hardware.