Zero to First Customer
Idea to first paying customer. The sequence I would run again, and the five ways I have watched it fail.
Download PDFI coach early founders through product, pricing, fundraising, hiring, and technical risk. YC W21. Two startups founded and acquired. One platform I still run today, from the first commit to real customers using it every morning.
Operator, not commentator
Testimonials
Doron has the rare founder-engineer ability to turn messy ideas into working products without losing sight of the people using them. He brings speed, taste, and real technical judgment to every conversation.
Working with Doron feels like having a CTO, product strategist, and builder in the same room. He asks sharp questions, moves fast, and keeps the work grounded in what actually matters.
Doron doesn’t just write code; he creates momentum. He can take an ambiguous problem, cut through the noise, and ship something clean, useful, and thoughtfully built.
What stands out about Doron is his balance of curiosity and execution. He explores deeply, but when it’s time to build, he becomes practical, focused, and incredibly effective.
Doron explains complex technical ideas in a way that makes them feel approachable. Whether he’s discussing machine learning, product architecture, or startup strategy, he makes people smarter around him.
As a founder and technical leader, Doron brings calm clarity to high-pressure work. He sees both the system and the user, which makes his decisions unusually strong.
Doron is a builder in the best sense: hands-on, thoughtful, and allergic to unnecessary complexity. He brings clean engineering, product intuition, and a genuinely optimistic energy to the work.
Doron introduced AI into our business end to end — today 80% of our operations run automated, and the team finally has room to tackle the next big thing.
Services
Every engagement is shaped around the stage you are in: first customer, product-market fit, or the operating problems that show up once growth starts.
How I work
Ship
A small thing in production teaches more than a quarter of planning. Launch fast, then let real usage pick the roadmap.
Types
Strict typing, tenant-scoped queries, secrets in a vault. Not a later phase. It is how you keep moving fast for longer.
Ownership
Clear ownership beats detailed process. I set the bar and the context, then get out of the way.
Business
Elegant architecture that moves no business number is a hobby. I optimize for the number.
Resources
Written from running the thing, not from advising on it.
Idea to first paying customer. The sequence I would run again, and the five ways I have watched it fail.
Download PDFScaling a product without breaking it. What fails first, in what order, and what it costs to fix it late.
Download PDFWriting
Essays from the operator's seat — what I would actually do, written down. Start with these, or browse everything.
Prefer email? doron@segaldoron.com
Background
Media
For engineers
I hire engineers and I sit on the other side of the loop. Separate from client work, I keep a few slots each month for individual engineers.
AI
Which parts of the work became commodity, which became more valuable, and what to start building evidence in now rather than in two years.
Loop
System design, take-homes, five rounds. How to prepare for each stage, and how to read what the company is actually testing.
Level
What separates senior from staff in practice, when management is the wrong move, and how scope really gets handed out.
I also work one-on-one as a coach — leveling, the interview loop, and landing the job you actually want.
Contact
One call, no deck. If I am not the right person for it, I will say so and point you at someone who is.