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Описание вакансии
Senior Android Developer (f/m/d)
Company
adjoe
Conditions
Full-time Senior 🇩🇪 Germany 💻 Development ✈️ Relocation Job description
Senior Android Developer (f/m/d)
Location : Hamburg Employment Type : Full time Location Type : Hybrid
What you’ll do
- Own the core development and optimization of the adjoe Ads SDK (Kotlin & Android Internals), running inside hundreds of publisher apps, ensuring zero tolerance for instability across millions of devices.
- Collaborate with backend teams to design APIs and capture behavioral signals powering 50 billion daily ML predictions; design APIs with backward-compatible changes for thousands of external integrators; work with high-performance networking protocols (gRPC, Protobuf, Wire, OkHTTP).
- Design for minimal footprint to optimize battery and memory usage, ensuring native and fast ad impressions inside third-party apps.
- Monitor, debug, and maintain SDK reliability at scale; use observability and data tools (Sentry, Kibana, AWS: S3, QuickSight, Athena) to turn data into engineering decisions.
- Maintain and improve CI/CD pipelines (Gradle, GitLab CI) to automate testing, building, and packaging of mobile libraries.
- Plus – contribute experience in ad-tech/programmatic advertising (IAB specifications), NDK/JNI (C/C++ interop on Android), or cross-platform iOS development to support the ecosystem.
Who we are looking for
- Kotlin & Android Internals Expertise: 5+ years of Android experience (or 3+ years in SDK/library development) with deep understanding of Android lifecycles, ProGuard/R8, and multithreading.
- High-Performance Network Design: Strong API design background with backward compatibility for external integrators; experience with gRPC, Protobuf, Wire, OkHTTP.
- Resource-Constrained Optimization: Ability to design for minimal footprint, optimize battery and memory usage for code running inside other apps/devices.
- Data-Driven Observability: Experience with Sentry, Kibana, AWS (S3, QuickSight, Athena) to monitor and analyze SDK behavior.
- Build Automation & Delivery: Hands-on experience with Gradle and GitLab CI for automated testing, building, and packaging.
- Plus: AdTech/programmatic advertising experience, NDK/JNI or cross-platform iOS development is valued.
What’s in it for you
- Global team with relocation support to Hamburg, Germany.
- Impactful projects affecting hundreds of millions of users and billions of decisions daily.
- Move fast: ship solutions multiple times a day; learn from results; maintain momentum.
- Direct collaboration across teams; transparent problem-solving.
- Thriving, diverse team from over 40 countries; continuous learning from colleagues.
- Fun environment with daily wins and energy.
Benefits & perks
- Relocation support to Hamburg for eligible candidates.
- Global, diverse team culture.
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