Senior Freelance Android Engineer - Kotlin (m/f/d)

voize; Köln; On-site; EUR 83,000 - 124,000; Full time

Benefits offered by this job

Travel expenses covered

Job summary

voize seeks a Freelance Senior Android Engineer to own the Android app, from initial concept through launch, using Kotlin and Jetpack Compose. You will work closely with product and engineering to deliver impactful features for frontline healthcare professionals.

Candidates based in Germany, France, or England are welcome; travel to Berlin is covered. Initial contract minimum of three months ensures you’ll contribute across the development cycle and refine user-centric interfaces.

Qualifications

• Several years of experience in Android development with Kotlin and Jetpack Compose.
• Good knowledge of Git, CI/CD processes, and testing.
• Fluent English; German is a plus but not required.
• Willingness to travel to Berlin (expenses covered).
• Available for a minimum 3+ months contract.

Responsibilities

• Take ownership of development and technical implementation of Android apps (Kotlin & Jetpack Compose).
• Build features that improve users’ daily workflow and launch them from idea to production.
• Collaborate with product and engineering to translate requirements into solutions.
• Participate in the full development cycle from concept and testing to user feedback.

Skills

Kotlin

Jetpack Compose

Android

Git

CI/CD

Testing

English fluency

Tools

Git

Job description

Why voize? Because we’re more than just a job! At voize, we believe the greatest gift to frontline workers is time - time to care, connect, and be present. Today, that time is lost to admin work that pulls nurses away from what matters most: people.

Your Mission

As a Freelance Senior Android Engineer, you'll take ownership of building and evolving our Android application, creating features that have a real impact on the daily lives of healthcare professionals. We are open to candidates based in France, Germany, or England, with a willingness to travel to our Berlin office from time to time (travel expenses covered). The initial contract is for a minimum of three months.

Your Daily Business – No two days are alike

• Take full ownership of the development and technical implementation of our Android apps (Kotlin & Jetpack Compose)
• Build features that genuinely make users’ lives easier, taking them from idea to launch
• Work closely with the product and engineering team to turn requirements into creative and efficient solutions
• Be involved in the entire development cycle: from concept and testing to user feedback

Your Skillset – What You Bring To The Table

• Several years of experience in Android development with Kotlin and Compose
• Good knowledge of Git, CI/CD processes, and testing
• A keen eye for intuitive and user-friendly interfaces
• Deep understanding of Flow lifecycle and Operators
• You speak English fluently C1 - German is a plus but not required.
• Willingness to travel to Berlin (we cover your expenses!)
• Can work with us for minimum 3+ months

We look forward to your application and can’t wait to meet you – no matter who you are or what background you have!