About

Product owner, developer, woodworker.

Product owner, UX designer and full-stack developer focused on Flutter apps and web platforms. I build robust, user-centred products with clean architecture and an eye for detail.

Gerald Gmainer
Location
Garsten near Steyr, Austria · remote/hybrid
Languages
German · English · Japanese
Focus
Product · app · web
Japan
5 years lived · 4+ years at Japanese companies
Off-screen
Woodworking
Freelance
Open to projects · remote or on site
01

In short

  1. 01

    End to end, from the product idea through UX/UI and architecture to implementation, tests and release.

  2. 02

    As product owner: roadmap, backlog and requirements together with customers and the team – Certified Scrum Master.

  3. 03

    Flutter apps with a local database, low-conflict sync and a stable state architecture.

  4. 04

    Web platforms with TypeScript, clearly structured APIs and well-thought-out data models.

  5. 05

    User-centred collaboration with clear communication, good tickets and real ownership.

02

Away from the screen

When I'm not in the editor, I like working with wood: a small rattle for my son turned into furniture, toys and everyday helpers in solid wood.

The working holiday in Japan – across the country from Hokkaido to Okinawa – is one of the experiences that shaped me most.

03

Skillset

Highlighted is what I use every day.

Product & UX

  • Product Ownership
  • UX/UI design
  • Scrum (CSM)
  • Requirements & backlog
  • Prototyping
  • SEO & marketing websites
  • Jira

App

  • Flutter / Dart (BLoC)
  • Offline-first & sync
  • Bluetooth (BLE)
  • Maps & GPS tracking
  • On-device OCR
  • Store releases (Fastlane)
  • Native Android (Kotlin)

Web

  • TypeScript
  • Angular
  • Vue / Nuxt
  • React / Next.js
  • Tailwind CSS
  • Three.js / WebGL

Backend & ops

  • Supabase
  • PostgreSQL (RLS, triggers, RPCs)
  • Spring Boot (Java/Kotlin)
  • Node.js
  • Keycloak / OIDC
  • Docker / Kubernetes
  • CI/CD (GitHub Actions, Jenkins)
  • Sentry

Also

  • Unity / C#
  • Blender
  • React Native
  • GraphQL
  • AWS Amplify
  • Playwright / Cypress
04

Tools

Tools that make my day faster

  • Figma
  • Jira
  • Android Studio
  • Xcode
  • IntelliJ IDEA
  • VS Code
  • Supabase Studio
  • Postman
  • Docker Desktop
  • Sentry
  • Grafana
  • Vercel