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AI EngineeringSzymon Żynda5 min read

AI-native is not vibe coding

We build every project with Claude Code. But AI without engineering discipline is chaos in production. Here is how we combine both.

There is a moment in every conversation about AI in development when someone says: "anyone can build a store now, just ask the chat". That is exactly the moment where the projects someone will be rescuing in six months are born.

At Seedlight we build every project with Claude Code. Features that used to take a week ship in a day. But the difference between us and a "vibe coder" is not the tool, it is what the tool receives as input and what happens to its output.

What vibe coding is

Vibe coding is working without specifications, without tests and without understanding the generated code. It looks impressive until the first real problem: a data migration, a payment edge case, Black Friday load. Then it turns out nobody knows why the system does what it does.

What AI Agentic Engineering is

We call our approach AI Agentic Engineering: the agent gets a specification, repository conventions and domain context, and its work passes the same gates as human work: review, tests, CI. AI accelerates execution, but architecture, decisions and accountability stay with the engineer.

In practice that means a few hard rules. Spec before code: the agent builds from described behaviour, not guesses. Conventions in the repo: structure, naming and patterns are written down, so every generated change looks like the same team wrote it. Review on every change: a human reads and understands the code before it reaches production.

The difference shows point by point:

Vibe codingAI Agentic Engineering
SpecificationNone, working on guessesSpec before code
Tests and CINoneThe same gates as human work
Understanding the codeNobody knows why it worksReview on every change
When a problem hitsBreaks on migration, payments, Black FridayMaintainable and handed over

The same tool, two very different processes around it.

Why it matters to the client

Because you are buying predictability, not just speed. A platform built with discipline can be maintained, extended and handed over: every next engineer (and every next agent) finds their way around the code. That is the difference between "built fast" and "built fast and still working in two years".

FAQ

How is AI-native different from vibe coding?

Vibe coding is working without specifications, tests or understanding of the code. AI-native (AI Agentic Engineering) runs the agent’s work through review, tests and CI; architecture and accountability stay with the engineer.

Do you build with AI?

Yes, every project with Claude Code. Features that used to take a week ship in a day, but what the tool receives as input and what happens to its output decides the quality.

Will AI-written code be maintainable in two years?

Yes, if it was built in the repository conventions and passed review. Every next engineer and every next agent finds their way around such code.

Can anyone build a store just by asking a chat?

Until the first real problem: a data migration, a payment edge case, Black Friday load. That is when engineering discipline matters, not the prompt.

Journal

Szymon Żynda

Co-founder of Seedlight · eCommerce platforms, AI, SEO and GEO

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