Successful Projects
There might be nothing worse than an unfinished or unsuccessful project. I'm reliable and get projects done.
Building software that elevates your dreams.
David Pertiller
Software architect and hands-on engineer in Vienna.
From enterprise platforms to web and mobile apps, I design and ship software end to end.
20Years of Experience
780k+App Installs
10+Published Apps
ViennaAustria
From Architecture to App Release
With 20 years of experience, I have worked across enterprise platforms, full-stack web products, and mobile apps. My computer science background supports the full path from design and implementation to testing and long-term maintenance.
What I work across
- Software Design & Architecture
- Agile Software Development
- Web Engineering
- Interface Design
- Rapid Prototyping
- Usability Testing
- Data Visualization
- Implementation & Testing
- Project & Risk Management
- Computer Animation & Multimedia
- Desktop, Mobile & Cloud Platforms
- Legal aspects of Information Technology
How I Build
Latest Technologies
I'm quick on the uptake and enjoy exploring useful new technologies without losing sight of pragmatic delivery.
Ideas People Use
I turn everyday problems into products people rely on: cheaper fuel across Europe, city services at a glance, and markets in real time.
Collaboration
I have a strong capacity for teamwork and enjoy working alongside other builders, always open to interesting projects and ideas.
Agentic Software Development
I'm fully utilizing AI agents to accelerate software delivery: from implementation and automated code review to fully autonomous development pipelines and releases.
Shipping & Maintenance
I take projects past the demo stage: released to the stores, kept alive, and improved over time.
Across the Full Stack
Web & Frontend
Component-driven UIs, server rendering, and standards-first front-end engineering.
Mobile Platforms
Native development for Apple and Android: from SDK internals to polished App Store releases.
Backend & Infrastructure
Scalable server-side systems, cross-platform runtimes, and containerized deployments.
Data & Databases
Relational foundations and reactive real-time databases for modern app architectures.
AI & Agentic Development
Agentic coding with Claude and Codex, automated pipelines, and AI-assisted software delivery end-to-end.
Workflow & Architecture
Monorepo tooling, collaborative version control, and lean delivery practices at scale.
Featured Work
Petroly
Petroly compares petrol and diesel prices across 15 countries, helping drivers find cheaper stations nearby or along a route…
Spritpreise Österreich
Spritpreise Österreich helps drivers in Austria compare current diesel and petrol prices, find cheaper gas stations, and refuel…
Bitcoin Monitor
Bitcoin Monitor compares cryptocurrency prices across exchanges and surfaces trade signals, volatility metrics, and market data…
Frequently Asked Questions
What does David Pertiller build?
David Pertiller builds mobile and web apps as independent side projects, including Petroly, Spritpreise Österreich, and Bitcoin Monitor, consumer apps with more than 780,000 combined installs. They are personal projects, built in evenings and weekends, focused on products people actually use.
What technologies does David Pertiller work with?
These projects span full-stack web development, native iOS and Android apps, data products, and AI-assisted delivery, taken from idea through to the App Store. The common thread is end-to-end ownership: design, build, ship, and maintain.
What makes these projects stand out?
Two decades of engineering experience and consumer apps with more than 780,000 installs, applied to self-funded side projects. Each one solves a real problem the author ran into himself, and gets shipped rather than left as a prototype.
Where is David Pertiller based?
David Pertiller is a software engineer based in Vienna, Austria, building these apps independently alongside a full-time engineering role. This site is a personal portfolio of those private and weekend projects.