Julian Petermaier · Independent Builder · Vienna
Building things that move ideas forward.
I design and build digital products, intelligent systems and businesses at the intersection of design, technology and artificial intelligence.
About
A non-linear journey into technology.
My path into technology wasn't a straight line. From hands-on technical work to project management, event operations and digital products, I've always been driven by curiosity and the desire to build things that matter.
Today, I work across design, technology and business, connecting different disciplines to turn ideas into working products.
- 2007-2014 Technical & Industrial Background
- 2015-2021 Project Management & Operations
- 2021-2023 Digital Products & UX
- Since 2022 AI & Software Development
- Since 2023 Independent Builder
Selected Work
Products in progress.
Two active products. Real-world challenges. Built with modern technology.
View all projects
AI & Engineering
A different way of building software.
Since 2022, artificial intelligence has become an integral part of my work. From agent engineering to harness engineering, I explore how to build reliable, useful and efficient AI systems.
Dive deeper- 01 Agent Engineering
- 02 Harness Engineering
- 03 AI-Driven Development
01 · Human Intent
Goals · Instructions · Constraints
02 · Agent Harness
Context · Orchestration · Tools · Verification
03 · Execution & Feedback
Plan · Execute · Evaluate · Improve
Illustrative conceptual model. Not a representation of one specific production system.
Capabilities
Different disciplines. One way of thinking.
I work across the boundaries of product design, software development and business. My approach is to understand the entire system, not just the individual components.
- 01 Product Strategy & Design Discovery · UX · UI · Design Systems
- 02 Software Development Frontend · APIs · Data Models · Architecture
- 03 AI & Agent Engineering LLMs · Agents · Harness Engineering
- 04 Systems & Infrastructure Docker · Self-hosting · Deployment · Automation
- 05 Business & Operations Business Models · Project Management · Operations
Journal
Thoughts, research and things worth sharing.
Ideas, perspectives and practical insights from working across product design, software engineering and artificial intelligence.
Open Source
Building in public.
I believe in learning by building. My GitHub profile offers a closer look at the projects, experiments and technical work behind my products.
Activity as shown on the public GitHub profile.