Freelancer profile translated to English.

Description

Hello!

I am a software developer with over 6 years of experience in IT security and app development. I am currently actively working on the secure messenger app stashcat and, with my own company devacy, have been developing custom software solutions and websites for over 3 years.

My focus areas:

• Android development with Kotlin, Jetpack Compose, Clean Architecture

• Cross-platform iOS and Android with Kotlin Multiplatform

• Integration of REST APIs, Push, WebSockets, Firebase, Room

• Secure software architecture through IT security experience

• Websites with WordPress (Divi, WooCommerce)

• Backends with NestJS (Node.js)

• Docker, Git, CI/CD, server setup, hosting

I am reliable, learn quickly, and deliver well-thought-out solutions with an eye for security, maintainability, and UX.

Availability:

• Weekday evenings

• Full-day: Wednesday, Saturday & Sunday (higher availability possible by arrangement)

• Communication via Teams, Mail, and Phone – flexible and transparent

Prices:

• WordPress/Web: €400/day (8h), flat-rate offers welcome

• Software projects: hourly rate or individual agreement

I look forward to exciting projects!

Contact:

Mail:Phone:

Industry field of expertise

Languages

German
Native or bilingual
English
Conversational

Workplace preferences

Can work on-site

Hannover (up to 50km), Braunschweig (up to 50km), Osnabrück (up to 50km), Bremen (up to 50km), Hamburg (up to 50km)

Devacy GbR
Co-Founder
SOFTWARE PUBLISHING
September 2021 - Today (4 years and 11 months)
Braunschweig, NI, Germany
In 2021, I co-founded my own company with a colleague on a part-time basis. Since then, we have been working for small to medium-sized clients on various topics. I focus on software and website development.

Experiences:
numerous websites for various clients, see: https://devacy.de/referenzen/
smaller software solutions for problem-solving in, for example, Python
Backend development (NestJS)
Web App development (Angular)
Based on my experience as a Senior Android Developer, I can implement any project as an app developer.
stashcat GmbH
Senior Android Developer
SOFTWARE PUBLISHING
April 2025 - Today (1 year and 4 months)
Hanover, NI, Germany
In my previous role, I earned the senior title as an Android software developer. Through my many years of programming and project experience in app development and IT security, I have continuously developed my skills. Here are some of my acquired and deepened knowledge areas:
Kotlin
Java
Android SDK
MVVM
Clean Architecture
Kotlin Coroutines
Dependency Injection
Testing
Material Design 3 (as well as Material Design 2)
Accessibility
Retrofit, Room, Koin
Jira, Confluence
Agile software development
and much more.
stashcat GmbH
Android Developer
SOFTWARE PUBLISHING
April 2019 - April 2025 (6 years)
Hanover, NI, Germany
In my previous role, I worked as an Android software developer for several years. During that time, I was able to continuously develop my skills. Here are some of my acquired and deepened knowledge areas:
Kotlin
Java
Android SDK
MVVM
Clean Architecture
Kotlin Coroutines
Dependency Injection
Testing
Material Design 3 (as well as Material Design 2)
Accessibility
Retrofit, Room, Koin
Jira, Confluence
Agile software development
and much more.

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Bachelor of Science
Leibniz University Hannover
2020
Bachelor of Science, Informatik

Andreas Domin

Webdesigner & Developer | WordPress, Mobile

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