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Webuildthesoftware.

Custom software and trading systems for businesses that need more than off-the-shelf tools.

Software that solves real problems.

We don't build demos. Everything here is running in production for real businesses — from trading systems to full internal platforms.

One stack. Assembled end to end.

Every layer below is built by the same team — client to data to deploy — then wrapped in a security perimeter.

Full-stack system schematic, assembled layer by layer inside a security perimeterCLIENTNext.js · React · TypeScript01API & BUSINESS LOGICNode.js · Route Handlers · Middleware02DATA LAYERPostgreSQL · Prisma · Neon DB03PAYMENTS & AUTHStripe · JWT · Role-Based Access04DEPLOYMENT & INFRAVercel · Docker · Fly.io · Sentry05SECURITY PERIMETERFull-scope pentest · Mapped to MITRE ATT&CK
quantlab · build.log
# quantlab — system assembly
boot client — next.js · react · typescriptok
wire api — node.js route handlers · middlewareok
provision data — postgresql · prisma · neonok
integrate payments — stripe · invoicing · subscriptionsok
enforce auth — jwt · role-based accessok
deploy — vercel · docker · fly.iodeployed
monitor — sentry error trackingok
pentest — full-scope · mapped to mitre att&cksecured
# system online — perimeter secured

20+

Projects Shipped

5

Live Trading Systems

4+

Industries Served

Industries We've Built For

Automotive
Construction
Entertainment
Financial Services
Topic clusters

Where to dig in next

Five topic clusters covering almost every QUANT LAB conversation — each bundles a pillar service with the supporting deep-dive posts and calculators, so you can read a topic end to end in twenty minutes.

Full-stack means the whole thing.

Front end to database. Auth to payments. Deployment to monitoring. We own every layer of the stack.

We've shipped platforms across trading, automotive, construction, and entertainment. Not a theme. Not a template.

20+

Projects Shipped

5

Live Trading Systems

4+

Industries Served

System Architecture

CLIENT INTERFACE

Next.js / React / TypeScript

API & BUSINESS LOGIC

Node.js / Route Handlers / Middleware

DATA LAYER

Prisma ORM / PostgreSQL / Neon DB

PAYMENTS & AUTH

Stripe / JWT / Role-Based Access

DEPLOYMENT & INFRA

Vercel / Docker / Fly.io / Sentry

Tech Stack

Next.jsReactTypeScriptNode.jsPrismaPostgreSQLStripeDockerVercelNeon DBTailwindFramer MotionFly.ioDigitalOceanSentryJWT Auth
Bill Beltz, founder and lead engineer of QUANT LAB USA INC custom software and trading systems firm in Macon, Georgia

William Beltz

Founder & Lead Engineer

I started QuantLab because I kept seeing businesses stuck with software that didn't fit how they actually work. I build the systems myself — from database to deployment — and I work directly with every client. No account managers, no handoffs.

Ready to Build?

Tell us what you need. We'll design a custom solution and deliver a transparent quote — no fluff, no runaround.

Book a Free Consultation

Share your vision and we'll handle the rest — architecture, development, delivery. Custom software that actually fits your business.

Response within 24 hours
100% confidential — NDA available
No commitment required
Free 30-min strategy call

No commitment · Takes 2 minutes

How it works

01

Submit your request

Fill out the 3-step form — takes under 2 minutes.

02

We review & reach out

You'll hear from us within 1 business day with next steps.

03

Free strategy call

We map out a solution, timeline, and transparent quote.

Prefer email? beltz@quantlabusa.dev