Software · Finance · Commercial Real Estate · Marketing

I build systems
that run businesses.

M&A models, SaaS platforms, real estate operations, and marketing engines — designed, built, and deployed. Seven ventures. One operator. West Palm Beach, FL.

Zachary Vorsteg - Full-Stack Developer, Financial Analyst, Commercial Real Estate Sales Associate, and Growth Operator based in West Palm Beach, Florida
7 Shipped
Live Products
FAU '20
Finance
SL3603483
FL RE License
Nationwide
Remote Clients

What I Do

Four disciplines. One operator. Every engagement gets the full stack from day one — code that ships, models that hold up, deals that close clean, and marketing that compounds.

Software

You want a website or app that actually moves your business.

Full-stack developer. Websites, web apps, and native iOS — designed, coded, and deployed solo. Seven live products in market. React, Next.js, Node, SwiftUI, Supabase. Full ownership of the code and domain, and a direct line to the person writing it.

See how I build →
Finance

You want models and systems leadership can stand behind.

FAU '20 Finance. M&A synergy modeling, automated FP&A infrastructure, multi-entity consolidation, and board-ready scenario planning. Deliverables that hold up in the room with investors, acquirers, and operators — backed by the same frameworks available as free templates below.

See templates & case work →
Commercial Real Estate

You want a transaction that closes clean and works for every side.

Florida Licensed Sales Associate (SL3603483), Cornerstone Realty. Commercial and industrial specialist across Palm Beach County. Same institutional-grade investor pro forma I use on real deals — free for yours. Cap rates, cash-on-cash, breakeven, 10-year projections, A–F investment grading.

Launch Pro Forma →
Marketing & Growth

You want traffic, leads, and conversions that compound month over month.

Founder of Ads Handled — done-for-you Facebook and Google ads for local businesses. Full funnel: landing page, ad creative, tracking, and optimization. Built and run by an operator who also writes the code and models the unit economics behind every campaign.

Start a growth plan →
Websites for Small Businesses

A simple website that actually
helps your business grow.

Whether you run a dental practice, a law office, a cleaning business, or a boutique shop — you deserve a professional website without the agency markup, hidden fees, or six-month timeline. I build it, you own it.

Launched in 7–14 days

From first call to live site — no drawn-out agency timelines. You'll see a working draft within the first week.

Mobile-first, SEO-ready

Over 60% of your customers will find you on a phone. Every site I build is fast, looks great on mobile, and gets found on Google.

You own everything

Clear scope up front. You own the domain, the hosting, and the code when we're done. No vendor lock-in, no hidden fees.

You talk to me directly

No account managers, no ticket systems. You work directly with the person writing the code. Text, call, or email — I respond fast.

Landing Page
Scoped per project

One-page site with hours, services, photos, and a contact form. Perfect for practices, clinics, and small shops that just need a professional presence online.

  • Custom design — not a template
  • Contact form + Google Maps embed
  • Mobile-optimized, fast load times
  • Google search setup
  • SSL & hosting guidance
Custom Web App
Scoped per project

Beyond a website — custom portals, booking systems, member areas, dashboards, and internal tools. Built with React, Node.js, and Supabase.

  • Custom software built for your workflow
  • User accounts, payments, databases
  • iOS app option (SwiftUI)
  • Ongoing support available
  • Scoped and quoted after a free call
Get a Fast Quote

Free 20-minute scoping call. Quote by end of day.

Free Tool

Investor Pro Forma

Institutional-grade underwriting. Zero cost.

Cap rates, cash-on-cash returns, breakeven analysis, and 10-year projections. A-F investment grading with strategic recommendations. The same framework I use on real deals.

No signup. No paywall.

Selected Work

Recent client work.

SaaS Exit Prep

Built comprehensive ARR model with cohort-level retention and expansion analysis for acquisition diligence on a $12M+ deal.

Identified $800K+ in missed expansion revenue, directly strengthening the seller's negotiating position and valuation multiple.

Post-Acquisition Integration

Consolidated 3 entities into unified financial reporting post-merger, with real-time synergy tracking against deal-model assumptions.

Reduced month-end close from 12 days to 3 with automated consolidation and variance reporting.

Series A Scenario Planning

Built dynamic 3-scenario model (base/bull/bear) covering burn rate, runway sensitivity, and founder dilution across term sheet variants.

Board-ready materials cut investor Q&A cycles in half and helped close the round 6 weeks ahead of target.

Templates

Proven frameworks. Free to download.

Clean, functional frameworks you can use today. Custom engagements build on these foundations with automation, multi-entity logic, and scenario engines.

Revenue Waterfall

SaaS retention analysis—new bookings, expansion, contraction, and churn tracking.

Download

3-Statement Model

Integrated P&L, balance sheet, and cash flow. Foundation for budgeting and forecasting.

Download

M&A Deal Model

Synergy modeling, purchase price allocation, and accretion/dilution analysis.

Download

Need something custom?

Let's scope it →

How I Work

Clear scope. Direct access. Engagements shaped around outcomes, not hours.

Software & iOS

Websites, web apps, and native iOS — designed, coded, deployed, and yours to keep.

Scoped per project

Finance & FP&A

M&A synergy modeling, automated reporting, multi-entity consolidation, and board-ready scenario planning.

Retainer or project

Commercial Real Estate

Industrial and commercial transactions in Palm Beach County. Florida Licensed Sales Associate, Cornerstone Realty.

Brokerage engagement

Marketing & Growth

Full-funnel paid media, landing pages, creative, tracking, and optimization. Built for compounding lead volume.

Monthly retainer

Let's solve something.

Tell me about your challenge.

Usually respond within 2-4 hours.

(561) 718-6725 Schedule a Call

Based in West Palm Beach. Available nationwide.