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Contrario

YC W25

San Francisco, US · Founded 2025 · 20 employees · Hiring · 3 known investors

Contrario is a recruitment platform that uses AI agents and a network of expert recruiters to source and deliver qualified candidates to companies. It integrates with existing ATS systems and handles candidate screening, scheduling, and coordination to reduce hiring time and overhead.

AI & Machine LearningEnterprise SoftwareHR TechSaaSRecruitingAIUnited States of AmericaAmerica / CanadaPartly Remote

Founders & leadership· Y Combinator alumni (W25)

Contrario was founded in 2025 by Arya Marwaha and Aditya Sood.

AMArya Marwaha
Arya Marwahain𝕏Co-Founder & CEOArya Marwaha holds a bachelor's degree from Stanford and previously worked in product development at BCG, conducted HCI research at Stanford, and founded an edtech startup that reached six-figure annual recurring revenue. He is now founder and CEO of Contrario.
ASAditya Sood
Aditya SoodinCo-Founder & CTOAditya Sood studied AI at Stanford before leaving to found Contrario. He previously led NLP work at NASA, conducted AI research in defense technology, and was a researcher at Stanford's Artificial Intelligence Laboratory and an Anthropic lab.

Investors · 3

Funding

SEC filings, press & company announcements

Source: company announcements and press reports — follow each round's link for the claim.

Company profile

researched Aug 2026

Contrario operates an AI recruiting platform that pairs software agents with a network of expert recruiters to source, screen and deliver candidates to hiring companies. The platform integrates with the hiring processes and applicant tracking systems companies already use, and handles candidate screening, scheduling and coordination in order to shorten time-to-hire and reduce recruiting overhead.

The product includes an assistant referred to by customers as "Rio," which customers describe as helping narrow a candidate pipeline, track the state of in-flight processes, and review outcomes between hiring cycles. Contrario positions itself for teams at a range of stages that are filling critical or hard-to-fill roles.

Business model

Contrario sells a recruiting service delivered through a software platform, combining automated sourcing and screening with human expert recruiters; the company markets to prospective customers through a demo request and sign-in flow on its website.

Traction

Contrario stated on its website that it publicly launched after crossing $6 million in annualized revenue. Customer testimonials on the site come from executives at Wispr Flow, AfterQuery and Slash, including one customer who said Contrario was one of only two of more than 50 recruiting channels tested from which they hired.

Full profile — market position, technology, go-to-market, geography

Market position

Contrario presents itself as an AI-driven alternative to conventional recruiting agencies and sourcing channels, differentiating on candidate quality and speed while retaining human recruiter involvement.

The combination of AI agents with a network of human expert recruiters, and integration into customers' existing hiring stack rather than replacing it.

Technology

The platform applies AI agents to candidate sourcing, screening, scheduling and coordination, and includes an assistant ("Rio") used to filter pipelines and track candidate processes. It is designed to connect into a company's existing applicant tracking system and hiring workflow.

Go-to-market

Direct sales driven by inbound demo requests on the company website, supported by published customer stories and testimonials from startup founders and CEOs.

Companies hiring for critical roles, including venture-backed technology startups; named customers referenced on the company's site include Wispr Flow, AfterQuery and Slash.

Geography

Headquartered in San Francisco, United States.

Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
Annualized revenueJan 2025$6M
HeadcountAug 202657

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

Competitors · 1

by search overlap

Companies competing with Contrario for the same Google search keywords, organic and paid, via search-intersection analysis.

Timeline · 1

launches, deals, and filings
Jan 2025
Contrario launches after crossing $6M annualized revenue

Contrario announced its public launch, stating it had crossed $6 million in annualized revenue.

source ↗

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

In the news

Research sources · 1

primary sources listed

1 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Contrario do?
Contrario is an AI recruiting platform combining AI agents with expert recruiters to source and place candidates for hiring teams.
Who founded Contrario?
Contrario was founded by Arya Marwaha, Aditya Sood in 2025.
Who are Contrario's investors?
Contrario's investors include Dash VC, Y Combinator, Nexus Venture Partners.
Where is Contrario headquartered?
Contrario is headquartered in San Francisco, US.