Lead Mobile SDK Engineer - Unity & Native (Flexible Hours)

MWDN; Warszawa; On-site; PLN 180,000 - 300,000; Full time

Benefits offered by this job

29 days PTO

10 paid recovery days

Free English classes

HR support

Flexible working hours

Legal & financial support for independ

Ind contractor support

Job summary

MWDN is seeking a senior Unity SDK engineer to lead architecture and implementation for a mobile gaming SDK. You will own end-to-end development, including in-game components, app-to-app handoff, and cross-platform bridging to iOS and Android.

The role demands deep Unity knowledge and strong English communication. You will work on a high-impact project with a fast-growing gaming platform, offering flexible hours, and a supportive, people-first culture.

Qualifications

• 5+ years engineering experience with Unity/C# shipped to iOS and Android.
• Built or core-contributed to a library or SDK used by other developers, with API design input.
• Deep knowledge of the Unity mobile build pipeline.
• Comfortable with Kotlin/Java and Swift/Obj-C to bridge platforms.
• Good profiling discipline and strong written English.

Responsibilities

• Design and build the SDK: in-game placement components, app-to-app handoff, deep linking, and the referral identifier that survives the store visit and install.
• Build the native layer: iOS and Android bridges, IL2CPP, Gradle and Xcode plugin plumbing, coexistence with other SDKs in the build.
• Hold size, cold-start and frame-time budgets, enforced in CI.
• Own versioning, UPM/Asset Store distribution, Unity LTS support, and migration paths.
• Build the test surface: sample game, cross-version build verification, integration tests, debug mode, and the docs.

Skills

Unity/C# experience

SDK development

Unity build pipeline

Kotlin/Java

Swift/Obj-C

Profiling

Strong English

Tools

Unity

Job description

MWDN is seeking a senior Unity SDK engineer to lead architecture and implementation for a mobile gaming SDK. You will own end-to-end development, including in-game components, app-to-app handoff, and cross-platform bridging to iOS and Android.

The role demands deep Unity knowledge and strong English communication. You will work on a high-impact project with a fast-growing gaming platform, offering flexible hours, and a supportive, people-first culture.