Freelancer & Consultant

Senior tech lead
when it matters.

I support companies as a senior software architect and tech lead, especially when projects become technically complex or teams need additional senior experience. My focus is durable architecture, clean implementation, and systems that remain maintainable.

Senior Software Engineer, App & Full Stack, Architect & CTO. Vienna, Klagenfurt, remote across Europe and beyond.

Discuss a project creative workline →
Modern development workflows

AI as a tool
with review.

I use Claude Code, OpenAI Codex, and GitHub Copilot deliberately for prototyping, refactoring, tests, documentation, and implementation. The important part remains technical ownership: architecture, review, quality, and a clean handover to the team.

Where I help

Typical
situations.

→A project is technically stuck
→Architecture decisions need senior validation
→The team needs temporary senior support
→Performance or stability issues slow the product down
→Scaling or cloud migration is coming up
→AI-supported development workflows need a practical setup
→An app does not reliably make it to the store
Starting points

Small entries, close to the code.

App Architecture Review

A look into the codebase: architecture, modules, data flow, build, tests, dependencies, release process, and the areas that will hurt next.

Senior Developer on demand

Temporary hands-on support when app experience is missing in the team: Android, Kotlin, Jetpack Compose, KMP/CMP, reviews, modernization, and implementation.

AI in daily development

Use Claude Code, Codex, and GitHub Copilot for prototyping, refactoring, development, and reviews - with clear boundaries, tests, and technical responsibility.

Mobile App Modernization

Stabilize existing Android, iOS, Ionic, or cross-platform apps and make them maintainable again step by step.

Skills

Tech stack.

Mobile & App
Android / KotlinJetpack ComposeJavaKotlin MultiplatformCompose MultiplatformIonic / Capacitor / CordovaiOS / Objective-C / SwiftfastlanePlay Store / App StorePWA / SPA
Frontend & Web
AngularTypeScriptJavaScriptRxJSAngular MaterialBootstrap / Flexbox / CSSjQueryWordPress / PHPGoogle AnalyticsFirebase App Analytics
Backend & Cloud
Node.js / Express / NPMMongoDB / Mongoose / AtlasFirebase / ParseAWS / GCP / DigitalOcean / HetznerDockerRedisPostgreSQL / MySQL / SQLiteLinux / Ubuntu / Debiannginx / Apache / TomcatDomains / DNS / Networking
AI-assisted Development
Claude / Claude CodeGitHub CopilotOpenAI CodexGoogle Gemini
Availability

Where and how.

I work on a project basis or support existing teams temporarily as a tech lead or senior engineer.

○
On-site
Klagenfurt am Woerthersee · Vienna · Austria
○
Remote
Austria · Germany · Switzerland · USA · UK · worldwide

More than 20 years of software development and technical project responsibility, with a focus on architecture, mobile, and cloud. Hourly rate, day rate, and availability on request.

Talk?

For rates, availability, and an initial conversation, contact me through creative workline, my company for app development, freelance engineering, and IT consulting in Vienna and Klagenfurt.

Write an email creative workline →