Dinarys Commerce MVP · AI-speed delivery. Production-grade output.
Every founder ships a demo in a weekend. The ones that raise survive Monday.
You could vibe-code a store this weekend. Your first hundred orders will find the bugs. Your term sheet will find the tech debt. We use the same AI tooling you do — then we apply ten years of checkout, payments, and migration scar tissue. A live commerce MVP in six weeks. On a codebase your Series A tech DD can’t refuse. Fixed price. Ship-or-refund.
6 Weeks to Live Payments
Real store, real transactions, real customers.
Ship-or-Refund Guarantee
Not live in six weeks, you get 100% back.
Survives Tech DD
Audit-ready code, infra-as-code, documented flows.
Built on platforms investors respect
The vibe-coded MVP isn’t the problem. It’s the ceiling.
AI dev tools put a demo in every founder’s laptop by Sunday night. That’s useful. The trouble starts on Monday, when customers, payment processors, investors, and future engineers arrive and the code has to answer to all four. Most vibe-coded MVPs cannot. You don’t lose the gold rush by building too slow. You lose it by shipping something that dies on contact.
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01
The Demo That Dies
at 100 OrdersRace conditions in the cart. No idempotency on the payment webhook. Transactional boundaries nobody set. It works in a screen recording and melts at the first load spike.
“We lost three weeks and four customers to a double-charge bug nobody knew was in there.”
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02
The Code Your Term Sheet
Won’t SurviveSeries A tech DD isn’t about features. It’s about whether the codebase can be maintained, scaled, and audited. Most AI-generated code fails all three by month three.
“The lead investor sent two engineers into our repo. We spent the next month rewriting before the term sheet closed.”
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03
The Rewrite That Eats
the RunwayWhat cost fifty dollars in AI credits on day one costs six figures on month nine, when the first real engineer refuses to touch any of it and a full rebuild is the only path forward.
“By the time we hired our first real lead, nothing was salvageable. We rebuilt from zero on runway we couldn’t spare.”
You don’t need an MVP that demos. You need an MVP that survives.
Our engineers ship in Cursor and Claude Code at the same velocity as any solo founder. The difference is what they won’t let the AI do — double-submit a payment, leak tenant data, break on a 3DS redirect, or pass a PCI audit with embarrassing gaps. AI speed. Senior conviction. One codebase that clears a tech DD without apologies.
Three roles.
One shippable business.
We don’t staff a squad of juniors and learn on your dime. You get three named seniors who each own a distinct surface of the build, all working against the same six-week clock.
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The Architect
Senior
ArchitectOutcome:
the decisions that hurt to reverse, made once, correctly.Ten-plus years in Shopify and production systems. Decides the data model, the checkout topology, the payment flow, and the integration seams before anyone opens an editor.
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Opinionated catalog, order, and inventory schemas from day one.
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Checkout that survives 3DS, refunds, partial captures, and taxes.
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Integration patterns your Series A engineers won’t want to rip out.
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Migration paths documented before you ever need one.
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The Builders
AI-Leveraged
Senior EngineersOutcome:
vibe-code velocity, production-grade output.Our engineers live inside Cursor, Claude Code, and Copilot. They generate the same throughput as any solo founder chasing a weekend demo — but every output is reviewed, tested, and wired into a real pipeline.
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AI-assisted output, human-enforced review on every PR.
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Automated tests, linting, and CI gates from commit one.
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Infra-as-code from week one — not bolted on at Series A.
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No hidden offshore handoffs. Named seniors only.
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The Keeper
Delivery Lead with a Scope-Lock Mandate
Outcome:
we ship on Friday of week six. No excuses.One person owns the calendar, the scope freeze, and the weekly burndown. Their job is to say no — to us and to you — when a new feature would cost you the launch date.
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Scope written and signed in week zero. No ambiguity.
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Daily async status, weekly 30-minute sync. No theater.
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If we scoped it wrong, we eat the overage. Not you.
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Post-launch handover documented and rehearsed.
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Six weeks, four phases, one live store.
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01
Scope Lock
Days 1–3. Not a discovery phase. A two-session decision sprint where we write down the product, the integrations, and the must-ship list. If we scoped it wrong, we eat the overage.
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02
Core Build
Weeks 1–3. Catalog, cart, checkout, payments, auth, admin. AI-accelerated, senior-reviewed. Infra-as-code from the first commit. Every PR passes gates before it lands.
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03
Integrate
Weeks 4–5. One critical integration — ERP, 3PL, CRM, or PIM. Investor dashboard wired. Order operations, refund flow, admin training prepped. First end-to-end test transactions.
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04
Launch
Week 6. Load test. PCI review. DNS cutover. Live payments on your domain. Handover pack delivered, admin training done, 90-day support window opens.
What’s in the box.
Every one of these ships on or before Friday of week six. You own the code, the tenant, the data, and the Stripe account from day one. If you fire us, everything keeps working.
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01
Production storefront on Shopify Plus, deployed to your domain.
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02
Payments wired end-to-end: Stripe or Adyen, 3DS, refunds, partial captures, tax, shipping.
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03
One critical integration included: ERP, 3PL, CRM, or PIM — your call.
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04
Branded storefront from our commerce design kit. Not a Figma handoff.
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05
Infra-as-code (Terraform), CI/CD (GitHub Actions), automated tests, linting gates.
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06
Investor pack: unit-economics sheet, GMV dashboard, architecture doc, code-audit checklist.
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07
Admin training: 2 hours live, recorded. Runbooks for order, refund, and incident flows.
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08
90 days of post-launch support: bug fixes, minor iterations, one feature addition.
Three ways to get to an MVP.
Only one clears a tech DD.
The question isn’t whether you can ship something fast. It’s whether what you shipped survives the week, the quarter, and the diligence call.
Vibe-coding solo
Generic MVP studio
Dinarys Commerce MVP
Time to first demo
One weekend
Four weeks
Two weeks, on your domain
Survives 1,000 orders a day
No. Race conditions, no idempotency.
Depends on the studio. Usually no.
Yes. Load-tested before launch.
Passes Series A tech DD
No. Rewrite clause incoming.
Sometimes. Often conditional.
Yes. Audit pack shipped with the code.
Payments-ready
Happy path only. 3DS and refunds TBD.
Basic Stripe. Edge cases often left open.
Stripe or Adyen, 3DS, refunds, tax, shipping.
Infra-as-code from day one
No. Manual deploys from a laptop.
Sometimes bolted on later.
Terraform and CI/CD from commit one.
Fixed price with scope-lock
Not applicable.
Flexible until it isn’t.
€29,000. We eat any overage.
Ship-or-refund
Not applicable.
No. "We’ll extend."
Not live in six weeks, 100% back.
What founders say after the term sheet closes
We spent three weekends vibe-coding a prototype. It looked great and collapsed on the first promo day. Dinarys rebuilt it in six weeks, payments included, and it’s carried us through Series A. The lead investor’s tech diligence cleared us without a single follow-up.
Founder & CEO
DTC Brand, DACH · Seed to Series A
I wanted AI speed without the AI mess. Dinarys engineers work in Cursor the same way I do, but they argue with it. The code reads like ten years of experience because it is ten years of experience. We launched on day forty-one.
Technical Co-founder
B2B Marketplace · Pre-seed
The stack we build on
Boring where it should be boring. AI-assisted where it should be fast.
Nothing you’ll rip out at Series A.
One price. One timeline. Four guarantees.
We took the negotiation out. You pay what everyone else pays. What’s different is what we owe you if we miss.
Commerce MVP
Fixed scope.
Six weeks to live payments.
€29,000
Total. Not a monthly retainer.
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Ship-or-refund
Not live in six weeks, you get 100% back. Not an extension, not a credit. A refund.
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Scope-lock
Scope signed in week zero. If we scoped it wrong, we eat the overage.
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Portability from day one
You own the code, the tenant, the data, and the Stripe account. Fire us any time without losing anything.
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Funded-founder upgrade
When your round closes, one free re-scoping session and 25% off month one of extended build if you continue with us within 120 days.
Common questions
If your plan is to get a demo in front of ten friends for feedback, don’t pay us. Vibe-code it. If your plan is to take real payments from real customers, raise a round on the back of it, and not rewrite the whole thing in month nine, the six weeks and the fixed price are the cheapest version of that outcome you’ll find. We’ve seen the rewrite bills. They’re in the six figures.
Two weeks gets you a demo. Four weeks gets you a demo with a payment form. Six weeks gets you live transactions on your domain, with 3DS, refunds, tax, shipping, one real integration, and a code audit pack. We picked the honest number. Competitors selling four-week MVPs are almost always shipping a landing page wrapped around an LLM prompt.
On Friday of week six, the site takes a real payment on your domain from your checkout. If it doesn’t, you get the full €29,000 back. Not a credit, not an extended timeline, not a negotiation. We carry the risk because the scope was locked on day one and we know what fits in six weeks. It’s only a guarantee because the recipe is repeatable.
You might, briefly. Then you’ll get over it. Scope-lock means the product we agreed on in week zero is the product that ships on week six, with zero change requests in between. If you realize in week three that you need a feature we didn’t scope, we park it for the 90-day post-launch window or for a follow-on engagement. This is the only way we can honor the fixed price and the refund guarantee. Founders who’ve shipped before tell us this is the best part.
No. Equity deals look elegant and create ambiguity about who decides what. The scope-lock discipline that lets us guarantee the timeline depends on a clean client-vendor relationship. We’d rather be the fastest path to your Series A than a minority co-owner of your cap table.
They should. We ship an investor pack with every build: architecture doc, code-audit checklist, infra-as-code baseline, test coverage report, incident runbooks. Most DD questions are pre-answered by the documentation. We’ve never had a build fail a diligence call. We’ve had founders use our audit pack to close rounds faster.
Ninety days of included support covers bug fixes, minor iterations, and one feature addition. After that, you can continue with us on a dedicated squad at standard rates, hire internally (we help with the handover), or just run it. Because the code is portable from day one, all three options are real.
You could ship a demo this weekend.
Let’s build the business.
No deposit. No discovery invoice. If it’s not a fit, we’ll say so on the call and point you somewhere that is.
Book a free 20-minute scope call