Senior Mobile Engineer (KMP) – Cross-Platform, GraphQL

Sytac BV; Utrecht; On-site; EUR 70,000 - 95,000; Full time

Benefits offered by this job

Unlimited Growth Days

The Best Gear

Growth budget €2,400 annually

Pension contribution 3.75%

Annual ski trip & beach BBQs

Job summary

Sytac is seeking a Senior Mobile Engineer to join a client project, building a mobile app from ground up using Kotlin Multiplatform (KMP) with a GraphQL API, targeting Android and iOS.

You will own the mobile app from architecture to UI, work across platforms, write maintainable code, participate in CI pipelines, and help shape engineering best practices in a fast-paced, e-commerce oriented environment.

Qualifications

• Proven hands-on experience with Kotlin Multiplatform (KMP).
• Strong Android (Kotlin) or iOS (Swift) development background.
• Experience with GraphQL APIs and modern data handling.
• Familiarity with continuous integration pipelines and testing practices.

Responsibilities

• Build an engaging mobile app using Kotlin Multiplatform for Android and iOS.
• Deliver robust, well-tested mobile applications and maintainable codebases.
• Integrate the app with a GraphQL API architecture for efficient data flow.
• Contribute to CI workflows and engineering best practices within the team.
• Translate user needs into smooth, delightful product experiences.

Skills

Kotlin Multiplatform

Android Kotlin

iOS Swift

GraphQL

CI pipelines

Testing

Communication

Product focus

Tools

CI/CD tooling

Job description

Sytac is seeking a Senior Mobile Engineer to join a client project, building a mobile app from ground up using Kotlin Multiplatform (KMP) with a GraphQL API, targeting Android and iOS.

You will own the mobile app from architecture to UI, work across platforms, write maintainable code, participate in CI pipelines, and help shape engineering best practices in a fast-paced, e-commerce oriented environment.