Sirideain Ventures

Every bet is
intentional.

We build software and back founders — because great products and great companies both start with the same thing: conviction applied with precision.

See our portfolio → Get in touch
What we do
We build things worth building — and back founders who do the same.
Portfolio
Everything we've built, backed, or bet on — each a deliberate investment of capital, craft, or conviction.
All
Ventures
Studio
Angel
Venture
Photo Time Machine
A self-hosted app that dates undated scanned photos using facial age estimation. Bringing order to decades of family memories.
Coming soon →
Studio
KissyKat Games Studio
A cat-themed game studio making games worth playing. Playful, crafted, and unabashedly feline.
Visit studio →
Angel
AQA
Water management technology platform bringing intelligence to how water is monitored and managed.
Water Tech
Visit site →
Angel
i-GENTIC AI
Enterprise AI governance platform using intelligent agents to enforce compliance policies in real time across regulated industries.
AI Governance
Visit site →
Angel
Mindgrasp
AI study tool that auto-generates notes, flashcards, quizzes, and tutoring from lectures, PDFs, and videos.
EdTech · AI
Visit site →
Our approach

We invest in
everything
we do.

Deliberate by design
Nothing at Sirideain is accidental. Every product, every check, every partnership starts with a clear answer to: is this worth building?
Founder-first
We've built companies and sat across the table from investors. We know what it feels like. That shapes everything about how we show up.
Conviction over consensus
We back ideas before they're obvious — and build products before they're safe. That's the only way anything interesting gets made.
Who's behind it
Patrick Sheridan
Patrick Sheridan
Founder · Builder · Investor
Founder of Sirideain Ventures. Former co-founder and CEO of Modus Create, a global product engineering consultancy. Builder at the intersection of technology and creativity. LinkedIn
Read the full mission →