Siena AI is a New York-based company, founded in 2023 by Andrei Negrau and Lisa Popovici, that builds AI agents for consumer brands. Its platform covers customer service, shopping, social media and voice agents sharing one data layer of orders, subscriptions and past conversations, and is used by brands such as FIGS, SPANX and HexClad.
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Siena is an ai/ml company headquartered in United States. It has raised at least $21.7M across the 2 funding rounds on record. Its most recent funding round, Series A, raised $17M in October 2026. Xcout tracks 4 named people at Siena, including Andrei Negrau (Chief Executive Officer). Xcout recorded 8 job postings from Siena in the last 90 days, naming tools such as ChatGPT, Claude, Cursor.
At least $21.7M raised across the 2 rounds on record. Every round on record:
| Date | Round | Amount | Investors |
|---|---|---|---|
| Series A | $17M | 5 named | |
| Seed | $4.7M | 8 named |
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Xcout recorded 8 job postings from Siena in the last 90 days, from a hiring record Xcout has kept since September 2026.
The weekly hiring trend, the roles and locations behind it — see Siena's hiring signals →
A few of Siena's closest competitors — see the full list of competitors and alternatives →
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