Software engineering · Florida, USA · Embarcadero MVP
Software that runs your business — built, verified, shipped.
I'm Dr. Holger Flick. I build the systems companies run on: warehouse and shop platforms, field apps that work offline, and web applications that replace aging desktop software — with Next.js, React, TypeScript, and PostgreSQL. A Master's in Computer Science, a PhD in Mechanical Engineering, and 30+ years of Delphi as an Embarcadero MVP mean I can read the old code as well as write the new. I'll help you ship it — and show you what I shipped before.
01 — Latest news
Fresh from the blog.
Latest
RAD Studio 13.2 Gives Delphi a Modern Linux Compiler
RAD Studio 13.2 moved the Delphi Linux compiler from LLVM 3.3 to LLVM 20.1 in a single release -- what that jump actually buys you, the new IDE and VCL work that ships with it, and the one generics change that will stop your build.
- Delphi
- Linux
- LLVM
- RAD Studio
- VCL
Read article
Independent & ad-free
The articles and tutorials here are free to read — funded by readers, not ads. If they've helped you, there's a way to give back.
02 — What I do
Six services, each with proof attached.
/01
Delphi to web migration
Legacy VCL and multi-tier Delphi apps — Delphi 7 and up, Firebird, InterBase, MS SQL — rebuilt on Next.js, React, and TypeScript with the data moved over.
Proof: Delphi 7 + Firebird 1.5 to Next.js
/02
Custom business systems
Warehouse management, B2B web shops, delivery apps, reporting pipelines — built from scratch, wired into the ERP you already run, and shipped to production.
Proof: Warehouse management system
/03
AI-assisted engineering, verified
Spec-driven development with Claude Code, local LLMs embedded in Delphi and web apps with no data leaving the building, and independent review of everything the model wrote.
Proof: Spec coding a native Delphi tool in one afternoon
/04
Delphi consulting and code rescue
Architecture reviews, FireDAC and database modernization, REST and JSON APIs, Docker and PostgreSQL for Delphi shops — three decades of Delphi on call.
Proof: PostgreSQL and FireDAC from scratch
/05
Training and courses
Live training for teams, video courses, and five books on Delphi, multi-tier architecture, and the road from desktop to web — in English and German.
Proof: Books and courses
/06
Long-term partnership
An expert on retainer for teams that need one: US-based, Eastern time, fluent German for DACH customers, and the same person on the phone every time.
Proof: How I work and where
03 — Selected work
Built, shipped, and running.
Anonymized on purpose — no customer names, no product details a competitor could use. The engineering is described exactly.
In production/01European manufacturer, industrial products
A warehouse management system, built from scratch
Stock, picking, packing, receiving, and reporting for a manufacturer's warehouse, integrated with their cloud ERP and running every day in production.
Launching/02Same manufacturer as the warehouse system
A B2B web shop that never holds its own stock
A business-to-business shop whose catalog is public, whose prices appear after staff approval, and whose availability comes live from the warehouse on every page view.
In production/03US home-delivery operation, existing Delphi backend
A delivery app for drivers that works without a signal
An offline-first mobile web app for drivers on the road, talking to the customer's existing Delphi REST backend, plus a live driver map for the office wall.
In production/04US public agency, property and inspection program
A twenty-year-old Delphi 7 application, on the web in a week
Delphi 7 and Firebird 1.5 rebuilt as a Next.js application with Prisma and PostgreSQL, the production data migrated, and an offline inspection app for the field.
04 — Built on what I sell
This site is the demo.
The page you are reading replaced a PHP site with a custom Next.js application and its own admin CMS. Everything I sell is running under your cursor.
- Blog and tutorials in Postgres with an admin markdown editor, drafts, scheduled publishing, and one-click translations into German, Spanish, and Portuguese
- Photo galleries with server-side uploads to S3, perceptual duplicate detection, EXIF display, and automatic re-encoding of videos so they play on every browser
- Server-side PDF export for every article, full-text search, RSS, and social preview images rendered on the fly
- Passkey login for the admin area, first-party click analytics with self-hosted geo lookup, no third-party trackers
- A paywalled video course platform (in preparation, not live yet), a private offline Delphi documentation library (for my personal use only, due to licensing rights), and a GraphQL API
05 — Explore
Articles, courses, books, and more.
06 — Say hello
Have a project in mind? Let's build it.
Available for consulting, migration work, and long-term partnerships — in English and German.