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Senior Android Developer (AdTech)

Тип работы
fulltime
Грейд
senior
Английский
b2
Страна
Germany
Релокация
Germany
Вакансия из списка Hirify.GlobalВакансия из Hirify Global, списка международных tech-компаний
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Описание вакансии

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TL;DR
Senior Android Developer (AdTech): Building and optimizing the adjoe Ads SDK that runs inside hundreds of publisher apps, renders native ad formats, and captures behavioral signals for real-time bidding and machine learning with an accent on Kotlin, Android internals, high-performance networking, and resource efficiency. Focus on maintaining backward-compatible APIs, eliminating instability across millions of devices, improving observability, and automating reliable SDK delivery.

Location: Worldwide; relocation support to Hamburg, Germany is available for candidates ready to join the team.

Company

hirify.global builds technologies for mobile app growth and monetization, including a programmatic in-app advertising platform connecting advertisers and publishers through Android and iOS SDKs.

What you will do

  • Own the core development and optimization of the hirify.global Ads Android SDK used inside hundreds of publisher applications.
  • Build and maintain native ad experiences that operate across multiple formats and support high-volume real-time auctions.
  • Design APIs and behavioral signal capture in collaboration with backend teams, maintaining backward compatibility for external integrators.
  • Optimize battery usage, memory consumption, application footprint, and runtime performance on resource-constrained devices.
  • Monitor and debug SDK reliability using observability and data tools, turning operational data into engineering decisions.
  • Maintain CI/CD pipelines for testing, building, packaging, and delivering mobile libraries.

Requirements

  • 8+ years of Android development experience, or 3+ years specifically in SDK or library development.
  • Strong Kotlin experience and deep knowledge of Android lifecycles, ProGuard/R8, and multithreading.
  • Experience designing high-performance APIs and maintaining strict backward compatibility.
  • Experience with networking technologies such as gRPC, Protobuf, Wire, and OkHTTP.
  • Hands-on experience with Sentry, Kibana, AWS S3, QuickSight, and Athena for observability and data analysis.
  • Experience with Gradle and GitLab CI for mobile build automation and delivery.

Nice to have

  • Experience in ad-tech or programmatic advertising, including alignment with IAB specifications.
  • Experience with NDK/JNI and C/C++ interoperability on Android.
  • Parallel iOS development experience with Swift.

Culture & Benefits

  • Build infrastructure reaching hundreds of millions of users and powering billions of daily decisions.
  • Own high-impact projects and ship solutions multiple times a day.
  • Collaborate directly across teams in a diverse, global organization representing more than 40 countries.
  • Relocation support to Hamburg, Germany is provided.

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