AI-Driven Android Engineer (Kotlin)

ActAI; Poland; On-site; PLN 90,000 - 160,000; Full time

Job summary

ActAI in Poland is seeking an experienced Android Developer for AI-powered apps. You will own the Android client experience, shaping how AI feels, behaves, and performs on mobile devices, with production-grade reliability and performance.

Work includes building with Kotlin, integrating AI features via backend APIs, designing UX for streaming responses, and collaborating with backend and ML engineers to define API contracts.

Qualifications

• 3+ years of Android development with Kotlin.
• Hands-on experience integrating AI features (LLM, vision, speech).
• Strong async programming with Coroutines/Flow.
• Familiarity with REST or gRPC APIs and structured data formats.
• Strong debugging and performance profiling skills.
• Experience with MLKit or on-device inference.
• Published production apps on Google Play.

Responsibilities

• Build and maintain production Android apps using Kotlin.
• Integrate AI-powered features via backend APIs.
• Design UX patterns for AI interactions, including streaming responses, retries, and partial results.
• Optimize performance, memory usage, and responsiveness for AI-heavy flows.
• Implement analytics, logging, and feedback capture for AI evaluation.
• Collaborate with backend and ML engineers on API contracts and system behavior.
• Ensure app stability, security, and scalability in production environments.

Skills

Kotlin

Android development

Asynchronous programming

REST APIs

gRPC

Debugging

Performance profiling

MLKit

TensorFlow Lite

Tools

MLKit

TensorFlow Lite

Google Play Console

Job description

ActAI in Poland is seeking an experienced Android Developer for AI-powered apps. You will own the Android client experience, shaping how AI feels, behaves, and performs on mobile devices, with production-grade reliability and performance.

Work includes building with Kotlin, integrating AI features via backend APIs, designing UX for streaming responses, and collaborating with backend and ML engineers to define API contracts.