mbrigl/opamp-fleet
Public
Fleet management based on OpAMP. A Rust implementation of OpenTelemetry's OpAMP protocol with an API-first server and a native client that supervises many agents.
- Rust
- OpAMP
- Hexagonal
- Specs + ADRs
Markus Brigl · Model-driven and spec-driven development
SoftwareArchitect
I'm a software architect and fullstack developer in the field of model-driven and spec-driven development.
Currently Product Owner at Würth IT Italy, Bolzano
INPUT
Model and spec
CORE
Generator · agent
OUTPUT
Running software
23 yrs
building software, since 2003
11 yrs
as CTO, 2013 to 2024
CAFM · GIS
enterprise domains
01 / Vision
Models and specs outlive the stack
Software should be described by what it means, not by the technology it happens to run on.
Since 2003 I have worked on one idea: describe the system first, then let tools produce the technology. From UML-based ERP frameworks and an Eclipse code generator to a low-code platform on hexagonal architecture, the stack changed many times. Today, with AI in the loop, the written specification takes the same role: specs and architecture decisions define the intent, and coding agents build against them. What stays is the description of intent.
01
Start from the model
Describe what a system means, independent of any platform. Technologies change, the model stays.
02
Write the spec first
Specifications and architecture decision records define intent before code. People decide, agents implement, and the spec is the contract between them.
03
Keep the core independent
Hexagonal architecture keeps business logic free of frameworks, so the stack can evolve without disrupting it.
04
Generate, don't repeat
Generators, templates and coding agents turn models and specs into running code, so effort goes into decisions instead of boilerplate.
02 / Projects
Selected projects
Selected repositories from my account and from the HiveVM organization.
hivevm/waggle
Public
HiveVM CC, a parser generator forked from JavaCC. Tree building is defined inside the grammar; a Gradle plugin generates parsers in Java, C++ or Rust.
- Parser generator
- Gradle plugin
- Java · C++ · Rust
hivevm/comb
Public
Node-based visual workflow engine and UI coordinator. A browser node editor on WebGL2 with a Rust engine compiled to WebAssembly, built for tens of thousands of nodes.
- Rust
- WebAssembly
- WebGL2
- Specs + ADRs
hivevm/ocelli
Public
View and edit Git repositories. A Git client that draws history as a lane graph, as desktop app (Tauri), terminal app or read-only remote server.
- Rust
- Tauri
- Git
- Web UI
hivevm/libgpkg2
Public
SQLite loadable extension for GeoPackage file access. A fork of luciad/libgpkg, revived with a specification, conformance notes and ADRs.
- C++
- GeoPackage
- SQLite
- Specs + ADRs
hivevm/nuc
Public
Template for agentic development in a Dev Container. A written specification and architecture decision records guide the work, and one AGENTS.md rules file is read by all coding agents.
- Spec-driven
- Dev Container
- AGENTS.md
03 / Career
Platforms built from models
Five case studies from twenty years of architecting enterprise systems.
FEATURED · 2016 – 2024 · CTO, TOL GmbH
Enterprise low-code application platform for CAFM
A comprehensive low-code platform for Computer-Aided Facility Management. Hexagonal architecture keeps it extensible and independent of any single technology, so it adapts to new environments and survives technology change. Delivered full-stack, with clients for web browsers and native mobile devices.
- Backend
- Java, Rust
- Frontend
- GWT, C++/Qt
- JavaScript engine
- V8
- Architecture
- Hexagonal
2013 – 2016
Mobile GIS, native on iOS and Android
CTO · Territorium Online
High-performance native apps with robust offline capabilities for field operations in places with poor connectivity.
- iOS
- Android
- C++
- REST
2008 – 2013
WebGIS 3.0 platform
Software Architect · Territorium Online
A next-generation platform on service-oriented architecture, delivering scalable, interoperable geospatial solutions for enterprise environments.
- SOA
- UMN MapServer
- pgRouting
2005 – 2006
UML2 designer and code generator for Eclipse
Software Engineer · Alpisco
A graphical UML2 designer plugin for the Eclipse IDE with automated code generation for enterprise Java applications and business process automation.
- Eclipse
- UML2
- EJB
- Linux
2003 – 2004
ERP/CRM application framework on UML
Requirements Engineer · Würth Phoenix
A framework for enterprise ERP/CRM applications, modelled with UML 1.4, built while covering several leadership roles across the project lifecycle.
- UML 1.4
- Linux