Oana Olteanu is a Romanian-born venture capital investor at SignalFire who draws on her immigrant background to connect with underestimated founders and her engineering experience to evaluate technical architecture and infrastructure decisions. She's known for coaching founders on how to properly evaluate and work with VCs, including sharing specific questions to ask investors and teaching founders to run board meetings as working sessions focused on key issues rather than status updates.
What they've been talking about across their social media accounts

- Cultural background and family dynamics, frequently drawing humorous contrasts between American habits and Eastern European upbringing, such as the intense effort required for cooking traditional meals versus making a quick salad, or how her father uses AI to plan a garden during freezing winters.
- Deep focus on artificial intelligence and automation, looking beyond the hype to practical applications like AI agents and large-scale data models, while also expressing frustration with integration issues between common tools like Claude and Notion.
- Appreciation for open source software and high-velocity engineering teams, explicitly celebrating portfolio companies that ship code quickly and expressing genuine joy when open source solutions succeed in the market.
- Honest perspective on the venture capital industry, offering warnings about junior investors who lack real decision-making authority and advising founders to focus on deck clarity rather than blaming investors for not understanding their vision.
- Nuanced observations of San Francisco tech culture, noting the shift in social norms where engineers might prefer mocktails and bubble tea over beer, and critiquing the pressure on professionals to dress down in hoodies just to fit the startup mold.
- Respect for hard work and ambition in young talent, countering narratives about quiet quitting by highlighting interactions with dedicated students, such as a researcher at CMU working on robotics.
About their Fund
Sectors
AI, Health, SaaS, Fintech, Cybersecurity
Rounds
Seed - Series B+
Avg Check Size
$250K - $20M
Notable Investments
SignalFire operates as a "tech company that does venture" with an in-house engineering team that built Beacon AI, a proprietary data platform tracking 650M employees and 80M organizations that 100% of their portfolio companies actively use for recruiting and go-to-market research. They explicitly avoid investing in AI foundation model builders despite being AI-focused, instead concentrating on applied AI companies with defensible business models and data moats, while using their scale to put up to $100M into single breakout companies at the seed stage.
Other partners at the fund
Notable Fund
Investments
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Avg. Check
Links
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Climate
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