Senior Android Engineer CI/CD - (Freelancer)

Why voize? Because we’re more than just a job!
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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
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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 month

• Own the health of our mobile CI/CD pipeline end to end: \~70 Kotlin Multiplatform jobs, from lint to end\-to\-end tests to store release


• Be the person who unblocks a broken master: triage the failure, debug the app itself (not just the pipeline), get 40\+ engineers moving again


• Attack the structure, not the symptoms: define what healthy CI means for us as actual SLOs, decide which jobs to keep, combine or gate the rest, and take our P95 pipeline from \~90 minutes to something nobody complains about


• Make test flakiness visible and owned — dashboards, quarantining, a clear owner per failing test


• Leave a trail: what you tried, what worked, and what already exists, so we build the muscle into our dev culture

YOUR SKILLSET – WHAT YOU BRING TO THE TABLE

• Several years building Android apps with Kotlin and Compose — you've shipped to real users, not just to CI


• Deep Gradle knowledge: multi\-module builds, build caching, task/configuration avoidance, and a real answer to "why does this build take 20 minutes?"

You've owned a CI/CD setup before (GitLab CI ideally): runners, caches, artifacts, change\-based job gating

• Comfortable in the unglamorous layers: emulators, macOS/iOS build agents, Appium/E2E flakiness, memory\-hungry Kotlin compile jobs


• Kotlin Multiplatform and/or iOS exposure is a plus, but most of the work feels like Android


• You speak English fluently (C1\) — German is a plus but not required

WHAT YOU'RE WALKING INTO* We're not going to pretend this is greenfield. Our pipeline is \~70 jobs deep, P95 sits around 90 minutes, our two end\-to\-end suites fail \~16–18% of the time, and one test job once failed 600 runs in a row before anyone noticed. There's a \#ci\-alerts channel that needs someone who wants to be in it. If that reads as a mess, this isn't your role. If it reads as an unusually clear mandate with visible impact on every engineer in the company, we should talk.

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

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