My advice to people looking for a "technical cofounder" is always to learn to code—and not in a snarky, "learn to build it yourself" way. Having even a cursory ability to code and a CS50 level understanding of computers will give you enough context to vet the plausibility of ideas, and give you the ability to articulate them in terms that might interest an engineer, as opposed to just saying "An app for investing in real estate."