Arun John Kuruvilla

Arun John Kuruvilla is a US-based solo angel investor and security engineer who backs early-stage technical founders at pre-seed and seed with checks under $250K. His focus areas are cybersecurity, AI infrastructure, and developer tooling, all reflecting his own engineering background. Healthcare is not a stated focus, and founders pitching him should expect the conversation to move quickly into technical and architectural details rather than commercial or clinical specifics.

The investment thesis is concentrated on B2B technical companies with strong founders, and it favors co-investment alongside institutional VCs or other angels rather than a lead role. Arun is most interested in companies where the technical wedge is genuinely difficult and where the founder has direct authority over the relevant engineering questions. Healthcare opportunities, when considered, would need to fit within that lens, typically through cybersecurity for healthcare data or AI infrastructure that serves clinical or research use cases. Pure clinical or workflow plays without a strong technical infrastructure or security angle are unlikely to engage him.

As a solo angel writing under $250K and explicitly co-investing rather than leading, Arun adds value through credibility on a cap table rather than through capital scale. He does not set valuation or terms and participates in rounds organized by larger institutional investors. Geographically, his activity is concentrated in the United States. Founders should expect rapid decisions when his technical interest is engaged, and equally rapid passes when the company falls outside his expertise areas.

There is no fund or team behind him. Arun is investing on his own behalf, drawing on his engineering background to evaluate companies and engage with founders. The relationship is direct, with no associate layer, no investment committee, and no formal governance structure to navigate.

His working style is informal and technically focused. He does not take board seats, and the practical value of the relationship comes through technical advice, hiring referrals within engineering and security communities, and introductions to other angels and operators. For founders building cybersecurity, AI infrastructure, or developer tooling products, particularly those who can use a technically credible voice on the cap table alongside institutional leads, Arun is a worthwhile addition to a round. For healthcare founders without a strong cybersecurity or technical infrastructure component, the conversation will likely be short and the redirection toward a healthcare-focused investor will be the right outcome.