Where is Sierra headquartered?
Sierra's primary hub is San Francisco, where the majority of engineering and executive leadership is based. The company is expanding into a 300,000 sq ft campus at 185 Berry Street in China Basin — San Francisco's largest new tech office deal of 2025 — and maintains a global footprint across Europe and Asia-Pacific as its enterprise field sales team scales. Three acquisitions in 2026 (Paris, Japan) have also embedded local engineering talent in key international markets.
- HQ
- San Francisco, CA
- Current HQ Address
- 235 Second St, Floor 5, SoMa, SF
- Expansion Address
- 185 Berry St, China Basin, SF (300K sq ft)
- Offices
- SF, New York, Atlanta, London, Paris, Madrid, Singapore, Tokyo, Sydney, Toronto
- Founded
- 2023
- Employees
- ~500 (tripling to ~1,500)
Where does Sierra have offices?
Sierra operates across three continents with its engineering and executive core in San Francisco and a growing international field sales footprint bolstered by acquisitions in Japan and France.
- San Francisco, CA· Headquarters
- New York, NY· Office
- Atlanta, GA· Office
- London, UK· Office
- Paris, France· Office (+ Fragment acquisition)
- Madrid, Spain· Office
- Singapore· Office
- Tokyo, Japan· Office (+ Opera Tech acquisition)
- Sydney, Australia· Office
- Toronto, Canada· Office
Sources:Sierra About PageThe Real Deal: Sierra SF Office Lease
Where is Sierra's headquarters?
Sierra's official headquarters is 235 Second Street, Floor 5, in San Francisco's South of Market (SoMa) neighborhood. In November 2025, Sierra signed a lease for 300,000 square feet at 185 Berry Street in China Basin (on the Mission Bay edge of SoMa), owned by McCarthy Cook and JPMorgan Chase. This expansion represents a nearly fourfold increase in Sierra's San Francisco footprint and ranked as San Francisco's largest new tech office deal of 2025, placing Sierra alongside OpenAI and Anthropic in the city's AI corridor.
All founding and senior engineering leadership is based in San Francisco. Sierra's culture emphasizes in-person collaboration, and the majority of engineering and product roles are listed as San Francisco on-site. The China Basin campus is designed to accommodate Sierra's announced plan to triple headcount from ~500 to ~1,500 employees.
What other offices does Sierra have?
Sierra operates offices in New York and Atlanta in North America, with a growing European cluster in London, Paris, and Madrid, and an Asia-Pacific cluster in Singapore, Tokyo, Sydney, and Toronto. These offices primarily house field sales, sales engineering, and customer success teams aligned with Sierra's enterprise go-to-market under Eric Eyken-Sluyters.
Two 2026 acquisitions deepened Sierra's international bench: Opera Tech (Tokyo, March 2026) embedded enterprise AI engineering talent and Japan-market expertise in Sierra's Tokyo office, while Fragment (Paris, April 2026) brought YC-backed French engineers specializing in AI operations into Sierra's Paris presence. The platform's support for 34+ languages underpins Sierra's international sales narrative and gives field teams in each region a credible local-language deployment story.
What Sierra's office footprint means for territory planning
For sellers targeting Sierra, San Francisco is where most engineering and executive buying decisions are made — the CTO, infrastructure, and product teams are all HQ-based. New York is likely the largest US commercial field sales hub and a natural entry point for enterprise technology vendors looking to engage Sierra's commercial team. Atlanta provides additional US East Coast coverage.
In Europe, London is the largest hub and the most likely entry point for EMEA-focused vendors. For Asia-Pacific, Singapore is the regional anchor; Tokyo gains additional depth through the Opera Tech acquisition. Field events, executive briefings, and ABM campaigns should concentrate on San Francisco first, then New York, with London as the EMEA priority. Sierra's rapid office expansion means new buying relationships can be established with relatively junior local champions — the procurement organization is not yet mature enough to require navigating a large entrenched vendor management function.
As of June 2026.Sources:Sierra About PageThe Real Deal: Sierra SF Office LeaseBisnow: Sierra China Basin Office
Sierra — frequently asked questions
