HILstart
YC S26San Francisco, US · Founded 2026 · 1 known investors
Hilstart provides an AI agent and a hardware interface device called Tracer that automate electronics board bring-up, firmware development, and design validation on real hardware. It serves hardware engineering teams, generating and running approved test plans, driving instruments, and writing results back to their tracker via API, usable in the cloud or from the user's own environment.
Advanced ManufacturingAI & Machine LearningDeveloper ToolsHardwareRoboticsUnited States of AmericaAmerica / Canada
Founders & leadership· Y Combinator alumni (S26)
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William A'CourtNamed on SEC filing
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William A'courtinFounderFounder and CEO of Hilstart. He was previously Lead Mechatronics Engineer at Aquila, working on laser-based wireless charging for drones, and has also built FSAE race cars and electric jetboats.
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Simon AlexanderinFounderFounder and CTO of Hilstart, who previously worked as a firmware engineer at Aquila.
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Rahul BhatiinFounderRahul Bhati is the founder of Hilstart, having previously worked on power and thermal systems at Vessev and test rigs at Halter, and been part of the founding team at the powerbeaming company Aquila, where he contributed to wireless laser energy transmission technology across multiple engineering disciplines.
Investors · 1
Reported raises · per SEC filings
Form D private placements$1.1M disclosed across 1 round · 2026
▶$500KraisedAug 2026 · 2 investors · Other TechnologyRule 506(b)
▶$500KraisedAug 2026 · 2 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- William A'CourtExecutive Officer, Director
- Rahul BhatiExecutive Officer, Director
- Simon AlexanderExecutive Officer, Director
- Offering amount
- $500K
- Amount sold
- $500K
- First sale
- Aug 2026
- Incorporated
- Corporation, Delaware, 2026
- Federal exemptions
- 06b
▶$1.1MraisedJul 2026 · 3 investors · Other TechnologyRule 506(b)
▶$1.1MraisedJul 2026 · 3 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- William A'CourtExecutive Officer, Director
- Rahul BhatiExecutive Officer, Director
- Simon AlexanderExecutive Officer, Director
- Offering amount
- $1.5M
- Amount sold
- $1.1M
- First sale
- Jul 2026
- Incorporated
- Corporation, Delaware, 2026
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Frequently asked questions
- What does HILstart do?
- Hilstart provides an AI agent and a hardware interface device called Tracer that automate electronics board bring-up, firmware development, and design validation on real hardware. It serves hardware engineering teams, generating and running approved test plans, driving instruments, and writing results back to their tracker via API, usable in the cloud or from the user's own environment.
- Who are HILstart's investors?
- HILstart's investors include Y Combinator.
- How much funding has HILstart raised?
- HILstart has disclosed $1.1M raised across 1 round.
- Where is HILstart headquartered?
- HILstart is headquartered in San Francisco, US.

