Cornerstone Tech — Building software that moves your business forward.

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Cornerstone Tech
0+Projects shipped
0Practice areas
0%Production-grade
0hAvg. response

From idea to production

Have an idea? We'll build it.

Tell us what you're trying to ship. We'll come back within one business day with a clear path forward.

  • Explain the idea — we'll build your app.

    Polished, scalable, production-ready software. From first sketch to launch.

  • Explain your automation — we'll build it to last.

    Cold email engines, WhatsApp bots, agentic Claude pipelines. Quietly running for years.

What are we building

Reply within 1 business day · No upsells

What we do

Engineered for clarity. Built for scale.

Four practice areas, every one of them backed by production software you can point at. No demoware.

Web Applications & Portals

Production Next.js apps with TypeScript, Supabase or Prisma, and Tailwind. Role-based dashboards, auth, RLS, real data flows.

Shipped

  • Steward Budget
  • AMTO Lesportaal
  • Felister Stays
  • UniShopCart Web

HR Information Systems

Government-scale HRIS — Laravel 12 + Filament admin and Next.js portal. RBAC, audit log, document workflows, salary structures.

Shipped

  • MAS HRIS (Maritieme Autoriteit Suriname)
  • MRO HRIS (Min. Regionale Ontwikkeling)

Outreach Automation & AI

Cold-email engines, WhatsApp outreach bots, and agentic Claude pipelines — Sheets → AI demo → email → follow-up → WhatsApp, orchestrated end-to-end.

Shipped

  • Enhance Media Pipeline (agentic)
  • WhatsApp Outreach
  • Email Engine

Multi-platform Software

When one surface is not enough — React Native (Expo), Next.js web, Chrome extensions, and shared backends. One product, native everywhere.

Shipped

  • UniShopCart (mobile + web + Chrome extension + scraper)

Selected work

Ten projects. Shipped, in production.

A mix of full-stack platforms, automations, and targeted apps — spanning HR systems for ministries, e-commerce, education, and outreach engines.

Discuss your project →

Mobile · Web · Extension

UniShopCart

Cross-platform shopping cart aggregator: React Native app, Next.js 16 web, and Chrome extension on Supabase + Firebase.

Automation

WhatsApp Outreach

Production WhatsApp outreach engine sending personalized messages with on-the-fly Playwright screenshots, for Enhance Media.

Web App · Personal Finance

Steward Budget

Personal budgeting app on Next.js 16, React 19, and Prisma — Decimal.js for cent-precise math, envelope-style categories.

Government · HRIS

MAS HRIS

Full HR system for the Maritime Authority of Suriname — Laravel 12 + Filament admin + Next.js portal. 22-table schema, RBAC, audit log.

Agentic · Automation

Enhance Media Pipeline

End-to-end outreach pipeline: Google Sheets → Claude generates a personalized demo → cold email → follow-up → WhatsApp.

Automation · Email

Enhance Outreach Email

Cold-email engine with Playwright site captures, IMAP reply tracking, and templated follow-ups on Nodemailer.

Education · Web App

AMTO Lesportaal

Lesson portal for AMTO with role-based dashboards (admin, teacher, student) on Next.js App Router and Supabase RLS.

Booking · Multi-language

Felister Stays

Direct-booking website for three Kenyan vacation homes, with M-Pesa STK Push payments, iCal sync to Airbnb/Booking, and EN/NL/SW.

Government · HRIS

MRO HRIS

HR system for the Surinamese Ministry of Regional Development — Next.js 16 + Tailwind 4 + TanStack Query frontend.

About

Engineering rigor, applied to software.

I'm Giorgio Simson, founder of Cornerstone Tech — a software studio based in Delft that helps businesses grow with modern websites, web applications, and smart automations.

My passion is building digital solutions that look polished and actually deliver results. From professional company sites and custom dashboards to automations for email, WhatsApp, and customer workflows — I focus on systems that are efficient, scalable, and easy to live with.

My background is in Aeronautical Engineering, with hands-on experience on satellite systems and software integration as part of the InhollandSat-1 project. That technical foundation shapes how I work: structured, strong fundamentals first, attention to detail throughout.

At Cornerstone Tech, it's about trust, quality, and a strong foundation. We build digital solutions that work today and are ready for tomorrow.

Giorgio Simson

Founder · Engineer

  • Delft, Netherlands
  • Aeronautical Engineering
  • InhollandSat-1 contributor
01

Reliability

We ship systems we would happily own at 3am. Boring tech, predictable behaviour, honest tradeoffs.

02

Structure

Clear contracts, layered architecture, and documentation that survives the next refactor.

03

Scalability

Built for the load you have today and the one you will have in two years — without rewrites.

Built on a strong foundation.
Cornerstone Tech

Let's build

Ready to build something powerful?

Tell us what you're trying to ship. We'll come back within one business day with a clear path forward.

Contact UsSee work