Get your custom AI & software built — a working proof of concept in 7 days

$2,500, half credited to your build — works or it's free. Other agencies staff juniors. You get ex-Meta and ex-IBM founders and elite engineers armed with AI.

Founder-Led, Every Project Chosen by Exited Founders AILA Innovator Spotlight '25 Lovable Solution Partner
Get Your Proof of Concept
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OUR APPROACH

See it work before you commit.

We build a working proof of concept of your project for $2,500 — and credit half of it toward your build if you go forward. Works or it's free: miss what we agreed, and we refund it. You keep the code. Every engagement is founder-led, with 15+ years shipping at scale.
3–12 wk

Average delivery time

75%+

Demo-to-client conversion

50+

Production apps shipped

$500K+

Revenue generated for clients

"Wei has a great combination of technical ability and business sense. He helped unblock the team on several key product decisions by bringing clear insights and recommendations."
Michael Mangarella
Michael Mangarella
Staff Data Scientist, Meta

HOW IT WORKS

From idea to production in weeks, not months.

Other agencies start with a contract. We start with working code.
01

Proof of Concept

We build a working proof of concept of your project in 7 days. Not a mockup. Not a pitch deck. Real code you can click through and show your team. It's $2,500, half credited to your build — and if it doesn't do what we agreed, we refund it and you keep the code.

7-day delivery · $2,500, half credited
See what you get
your-prototype.nexrizen.dev LIVE
1 export async function buildPrototype(spec) {
2 const app = await deploy(spec)
3 return { demo: app, cost: 0, days: 3 }
4 }
5
Deployed | 3 files changed Day 3 of 3
Sprint 3 · Week 6
65%
To Do
Auth flow
API layer
Building
Dashboard UI
Integrations
Shipped
DB schema
Onboarding
Prototype
02

Build

You greenlight it, we go heads-down. Founder-led sprints, weekly demos, full-stack delivery in 3–12 weeks. You talk directly to the engineers building your product — not an account manager.

Founder-led, weekly demos
03

Launch & Scale

Production-ready code, not a prototype that 'needs a few more months.' We handle infrastructure, integrations, and the messy parts other shops skip. Need ongoing support? Monthly sprints, zero lock-in.

50+ apps in production
Production Dashboard All systems go
99.9%
Uptime
+340%
Throughput
0.8s
Response

Three ways to start. Each one ends with something you keep.

You do not need to know which service you want. Find the situation you are actually in — then check you are not ruled out underneath it.

Proof of Concept

Find out whether it works before you fund it.

This is you ifYou know what you want built, and you want to watch a real piece of it run before you commit the budget.

  • A working feature in your repo, live on your data, inside a week.
  • A real answer to “can this actually work here” for $2,500, instead of a six-figure guess.
  • The code, whether or not you take it any further with us.
Price
$2,500
Time
7 days
Credited to your build
$1,250 back if you build within 90 days

Not you if

  • Nobody internally agrees on what to build yet. AI Blueprint →
  • The build behind this is already six figures and unspecified — one working feature will not de-risk it. Discovery Sprint →
See the Proof of Concept

AI Blueprint

Spend the budget on the thing that pays it back.

This is you ifSomething is clearly costing you time or money, and nobody can tell you which fix is worth making first.

  • Three to five opportunities ranked by what each returns, with the arithmetic behind the ranking.
  • An ROI model you can defend to your board, and use with any team — not only ours.
  • Permission to not build: when the answer is fix the process first, we say so.
Price
$5,000
Time
2-4 weeks
Credited to your build
$2,500 back if you go ahead within 90 days

Not you if

  • You already know which single process to fix and only need it specified and priced. Discovery Sprint →
  • There is only one candidate on the table — ranking five of them is not worth $5,000.
See the AI Blueprint

Discovery Sprint

Know the real number before you sign for it.

This is you ifYou know the problem, and you are about to commit six figures to an estimate nobody has actually checked.

  • A clickable spec of the thing itself, so the argument about scope happens now and not in month three.
  • A price written by the engineer who would build it — at three budget levels, not one number.
  • The whole package to take to any firm, including one that is not us.
Price
$8,000
Time
2 weeks
Credited to your build
$4,000 back if you build within 90 days

Not you if

  • You only want to see one idea work first. Proof of Concept →
  • The build behind it is under roughly $55,000 — this is hard to justify. Email us, there is a smaller version that fits.
See the Discovery Sprint

WHY NEXRIZEN

Why clients choose us

A Working Proof of Concept — Credited to Your Build

Most agencies want a $50K deposit before you see a single screen. We build you a working proof of concept in 7 days for $2,500 — and credit half of it toward your build. Works or it's free: miss what we agreed, and we refund it. You keep the code. Then we deliver the full project in 3–12 weeks, not 6 months.

"His talent enabled us to take our platform to a level that would take most dev shops months to complete. A true hidden gem!"
Kevin Malley
CEO, GyftGram (Techstars '24)

AI That Actually Works

We've built AI systems handling 1,000+ conversations daily. Not demos. Production systems generating real revenue.

"This isn't just automation—it's a complete transformation. We've unlocked new revenue streams while actually reducing our operational complexity."
Arvin Saenz
Founder & CEO, Saenz-Garcia Law

Boutique Attention, Enterprise Quality

Big agencies shuffle you between account managers. We give you direct founder access on every project.

"I've hired him multiple times. He's smart, trustworthy and a great partner in thinking creatively not just about technology solutions - but how they match to business decisions."
Helaine Knapp
Founder & CEO, CITYROW (acquired by WaterRower)

We Don't Just Build AI — We Run On It

6 proprietary AI systems power our business — from proposal generation to dev acceleration. That's why we deliver in weeks, not months. Check our open-source work on GitHub.

"His approach to integrating cutting-edge solutions has been fundamental in improving operational efficiency. It has transformed our platform."
Josue Roman
COO, ABACROP

HOW WE OPERATE

We don't just build AI systems — we run on them

Every system we build for clients runs first inside our own business. That's the proof that it works — and it's why we know where to start.

10
AI systems in production
75–80%
Demo-to-client conversion
50+
Production apps shipped
10x
Engineer throughput
See the operating model
Proprietary AI development framework — 5 engineers at the throughput of 50
Meetings, emails, decisions — captured automatically
Sales — first call to signed contract in days
Institutional knowledge — in the system, not people's heads
Delivery quality — consistent on every project
Marketing intelligence — competitive analysis on autopilot
Finance and operations — automated end to end

CAPABILITIES

What We Build

Custom Software

Web apps, internal tools, client portals. Full-stack development with modern frameworks.

Examples: SaaS platforms, dashboards, workflow tools
"He is creative, nimble and understands how to align tech with business goals. Having this level of talent has been an absolute game changer for us."
Ashley Keith
Co-Founder, CITYROW
"I'd hired consultants with minimal progress. Nexrizen delivered in one week, saving attorneys hours weekly."
Tahreem Kalam
Tahreem Kalam
CEO, Minsky, McCormick & Hallagan, P.C.

Let's see if we're the right fit.

Book a free 30-minute call. We’ll discuss your project and tell you honestly if we’re the right fit.

Get Your Proof of Concept

$2,500 · half credited to your build · works or it's free