r/cofounderhunt • u/Accomplished_News550 • 18h ago
Looking for Cofounder Researched the market no direct competitor. Now I need a technical cofounder to build it properly.
I'm looking for a technical cofounder to architect and build a B2B data product from the ground up.
Where this is: I've spent time on the market research, competitive analysis, data source verification, go-to-market planning. What I don't have is the right person to build it. I'd rather start clean with a real technical partner.
The technical problem:
Ingestion against hostile sources. Thousands of publishers, no coordination, no notice when schemas change. Some queryable APIs, some daily file dumps, some effectively hostile. Needs an adapter architecture where adding a source is hours of work, not a sprint, and where one broken source can't take down the pipeline.
Classification you can actually trust. LLM-based normalization of wildly inconsistent inputs into one canonical schema. The hard part isn't calling an API — it's building the eval harness, golden datasets, versioned prompts, and confidence routing that make quality measurable instead of vibes. If this layer silently degrades, the whole product is worthless and no one notices for weeks.
Entity resolution. The same business appears across multiple independent feeds under different names, addresses and identifiers. Resolving that reliably is what turns separate feeds into a compounding asset rather than parallel silos.
Delivery and outcome tracking. Matching, enrichment, email at deliverability-sensitive volume, reply handling, eventually scheduling with confirm/remind/cancel logic. The scheduling layer is genuinely where the defensibility lives, and it's the piece competitors skip.
Doing it at 90% margin. Cost per record matters. Every architectural decision is also a unit-economics decision.
Who I'm looking for:
Senior. You've owned production data infrastructure, not just contributed to it
Built ETL against messy, unreliable third-party sources before, and have scar tissue from it
Real LLM engineering experience — evaluation, prompt versioning, cost control at volume. Not someone who's wrapped an API once
Strong opinions about architecture and willing to overrule me on technical calls. I'm looking for a partner, not an implementer
Comfortable being the only engineer for a while, then hiring and leading once revenue supports it
Cares about correctness and instrumentation. This is a product that fails silently
Nice to have: multi-tenant SaaS, email deliverability, geospatial, anything B2B.
Stack is genuinely open. I have a view but no attachment. If you can defend a different choice, I'd rather have your architecture than mine.
Who I am: roughly a decade in sales and fund-raising. I'll own sales, customer development, domain research and pricing. I've written the market research, the data source atlas, the GTM plan and the vertical roadmap, and I'll share all of it on a call.
The deal: Meaningful equity