Approxima
YC W26San Francisco, US Β· Founded 2025 Β· 2 employees Β· 1 known investors
Approxima provides AI agents that handle routine software development tasks including scoping work, writing code, validating fixes in isolated environments, and deploying to production, freeing developers to focus on novel work.
Also known as Sidekit Β· SideKit
Founders & leadershipΒ· Y Combinator alumni (W26)
Approxima was founded in 2025 by Ethan Pronev and Ashish Selvaraj.
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Ethan PronevinπFounderEthan Pronev worked on trading systems at Jane Street and Citadel Securities, and is a computer science graduate from the University of Waterloo. He is co-founder of Approxima.
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Ashish SelvarajinπFounderHe previously worked on delta live tables at Databricks and on infrastructure testing infrastructure at Microsoft, and holds a double degree in computer science and business from the University of Waterloo.
Investors Β· 1
Funding
SEC filings, press & company announcements- Undisclosed amountSeries AMar 2025Source β
- Undisclosed amountSeries AFeb 2025Source β
- Undisclosed amountSeed FundingSep 2024Source β
Source: company announcements and press reports β follow each round's link for the claim.
In the news
Frequently asked questions
- What does Approxima do?
- Approxima provides AI agents that handle routine software development tasks including scoping work, writing code, validating fixes in isolated environments, and deploying to production, freeing developers to focus on novel work.
- Who founded Approxima?
- Approxima was founded by Ethan Pronev, Ashish Selvaraj in 2025.
- Who are Approxima's investors?
- Approxima's investors include Y Combinator.
- Where is Approxima headquartered?
- Approxima is headquartered in San Francisco, US.