Senior Kotlin MPF Developer (4-Month Contract | Remote) | Spain

Senior or Strong Semi-Senior Kotlin Multiplatform Developer (4-Month Contract | Fully Remote)

Are you a Senior or Strong Semi-Senior Kotlin Multiplatform Developer with solid experience in Android and/or iOS development — and excited to build something from scratch?

Join a focused, high-impact 4-month contract project, where you'll help develop a brand-new SDK for an innovative automotive product.

This position is 100% remote.

What You’ll Do

1. Design and implement a production-grade SDK using Kotlin Multiplatform (KMP)
2. Target both Android and iOS, collaborating with a small, remote team of mobile experts
3. Build core SDK functionality from the ground up
4. Write clean, maintainable, and testable code — performance and quality are key
5. Optionally contribute to CI/CD, release workflows, and SDK documentation (bonus points!)

What You Bring

1. Proven experience with Kotlin Multiplatform in real-world applications
2. Strong Android or iOS development background (or both!)
3. Solid debugging and architecture skills — you know when to abstract and when to get things done
4. Passion for building high-quality SDKs that developers love to use
5. Comfortable communicating in English — both written and verbal

Bonus Skills

1. Experience building SDKs intended for external developer use
2. Familiarity with mobile CI/CD pipelines, testing tools, and versioning practices
3. Understanding of native build systems like Gradle and Xcode
4. Exposure to automotive technologies (e.g., Bluetooth, CAN bus, sensors)

Who You’ll Work With

You’ll join a compact, cross-functional team consisting of:

1. 3 Developers (covering KMP, Android, and iOS)
2. 1 Project Manager
3. 1 Software Architect

A collaborative and agile setup — with fast feedback loops and direct impact.

What We Offer

Competitive compensation and an interesting technological challenge.

4-month freelance or contractor agreement

If you're a Kotlin Multiplatform enthusiast with mobile chops and a love for clean SDK architecture — we'd love to hear from you!