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Job · Medior

Android Software Engineer

Software Engineer • Medior • Remote • Full-time • Spain Spain

The Android Software Engineer owns ActAI's Android client experience, building AI features in Kotlin and ensuring stability and performance in production.

Responsibilities

  • ▹Build and maintain production Android apps using Kotlin
  • ▹Integrate AI-powered features (chat, vision, voice, recommendations) via backend APIs
  • ▹Design UX patterns for AI interactions: streaming responses, retries, partial results
  • ▹Optimize performance, memory usage, and responsiveness for AI-heavy flows
  • ▹Implement analytics, logging, and feedback capture for AI evaluation
  • ▹Collaborate closely with backend and ML engineers on API contracts
  • ▹Ensure app stability, security, and scalability in production

Requirements

  • ▹3+ years of Android development experience using Kotlin
  • ▹Hands-on experience integrating AI features (LLM, vision, speech APIs)
  • ▹Strong understanding of asynchronous programming (Coroutines, Flow)
  • ▹Familiarity with REST or gRPC APIs and structured data formats
  • ▹Strong debugging and performance profiling skills
  • ▹Published production apps on the Google Play Store

Nice to have

  • ▹MLKit or light on-device inference experience

Soft skills

Comfort building in environments with latency, partial failure, and non-deterministic behaviorIndependent, structured way of working

About the company

ActAI builds proactive, AI-native applications for the five billion users of today's non-AI-native tools (email, notes, tasks, calendar). The goal is high reliability for long-running workflows, persistent context, and real-world task completion with minimal prompting.

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