SDK Engineer

September 16, 2026

Hybrid

Senior

London, Ljubljana

Description

Metica is an AI-native growth partner for mobile games studios, unifying user acquisition and in-game monetisation. The company is backed by Play Ventures, 13books Capital and Firstminute Capital, founded by a team with prior exits to King and Apple. They are hiring a Senior SDK Engineer to build and evolve mobile SDKs (Android Kotlin / iOS Swift) that ship inside customers' games, with end-to-end ownership from API design through release and live integration support.

Responsibilities

Build and maintain mobile SDK on Android (Kotlin) or iOS (Swift)
Own the public API surface: minimal, stable across versions, hard to misuse
Keep SDK lightweight and resilient — no crashes in host apps, graceful degradation when backend unreachable
Own releases, versioning, and distribution via Maven Central, SwiftPM, CocoaPods
Support customer integrations and investigate issues inside live production games
Work with backend and data teams to shape the client-server contract

Requirements

Senior experience shipping production mobile code on Android or iOS at scale
Experience building an SDK or library consumed by other developers, not only apps
Comfort debugging inside code you do not own, from crash reports, ANRs and partial customer reports, often without a reproducible case
Experience making networking and local storage survive flaky mobile connections: batching, retries, offline queueing, persistence
Test-first habit: no production code without a failing test first
Leverage from latest LLM tooling — central to how the team works
Strong plus: Unity experience for Unity package integration
Strong plus: Previous work on mobile ads SDK, especially AppLovin MAX, knowledge of mediation stack (waterfalls, bid floors, fill rate, eCPM, ad lifecycle)
Also welcome: cross-platform bridge experience (React Native, Flutter)

Conditions

Hybrid model with in-office presence in London or Ljubljana, Slovenia
Part of early-stage scaling team with real ownership opportunities

KotlinSwiftUnityMaven CentralSwiftPMCocoaPodsmobile gaming

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