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Freelance Kotlin Multiplatform Developer Jobs (NOW HIRING)

Salvo Software

OTX Runtime Engineer

$125.40K - $165.30K/yr

The work demands equal fluency in language-implementation concepts, Kotlin Multiplatform engineering, and automotive diagnostic protocols. Key Responsibilities OTX Runtime Core * Design and implement ...

MM International

Lead Android Developer

Rocklin, CA · On-site

Lead Android Developer Rocklin, CA Technical Expertise 12+ years of total experience in mobile app ... Familiarity with Kotlin Multiplatform (KMP) or Compose Multiplatform. Exposure to App Store/Play ...

Rapsodo

Senior Software Developer

Saint Louis, MO · On-site

$53 - $70/hr

... Kotlin Multiplatform codebase. * Own architectural scoping-articulating trade-offs and risks ... Continuously improve developer experience through smarter tooling, build optimization, CI/CD, and ...

Rapsodo

Senior Software Developer

Saint Louis, MO · On-site

$53 - $70/hr

... Kotlin Multiplatform codebase. * Own architectural scoping--articulating trade-offs and risks ... Continuously improve developer experience through smarter tooling, build optimization, CI/CD, and ...

Rapsodo

Senior Software Developer

Saint Louis, MO

$53 - $70/hr

... Kotlin Multiplatform codebase. * Own architectural scoping-articulating trade-offs and risks ... Continuously improve developer experience through smarter tooling, build optimization, CI/CD, and ...

Zwift

Senior Software Engineer 2, Mobile

$136.60K - $170.90K/yr

Zwift is looking for a Senior Software Development Engineer to join their Zwift Companion team ... Preferred : • Proficiency in Kotlin Multiplatform, Compose Multiplatform & React Native • ...

Walter

Android Developer

$57 - $75/hr

We are looking for skilled Android developers to join our team and work on cutting-edge features to ... Experience with Kotlin Multiplatform is a plus. Highlights - Long term (12+ months ) and full-time ...

Zwift

Senior Software Engineer 2, Mobile

Long Beach, CA · On-site +1

$128K - $204K/yr

Zwift is looking for a Senior Software Development Engineer to join our Zwift Companion team. In ... Bonus points: * Proficiency in Kotlin Multiplatform, Compose Multiplatform & React Native

Globusmedical

Senior Software Engineer

Audubon, PA · On-site

$123.60K - $162.90K/yr

Nevro, a Globus Medical subsidiary, is hiring a Senior Software Engineer where you will work on our ... Strong proficiency in Kotlin, Compose Multiplatform, and mobile architecture patterns (MVVM ...

Globus Medical

Senior Software Engineer

Audubon, PA · On-site

$123.60K - $162.90K/yr

Nevro, a Globus Medical subsidiary, is hiring a Senior Software Engineer where you will work on our ... Strong proficiency in Kotlin, Compose Multiplatform, and mobile architecture patterns (MVVM ...

NAVA Software Solutions

IOS Developer

Lakeland, FL · On-site

$48 - $66/hr

Experience with Kotlin Multiplatform * Experience with Azure DevOps and GitHub * Experience with the release of at least 1 publicly available app to the Apple Store participating from feature ...

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How much do freelance kotlin multiplatform developer jobs pay per hour?

As of May 31, 2026, the average hourly pay for freelance kotlin multiplatform developer in the United States is $61.13, according to ZipRecruiter salary data. Most workers in this role earn between $53.61 and $70.43 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Freelance Kotlin Multiplatform Developer, and why are they important?

To thrive as a Freelance Kotlin Multiplatform Developer, you need strong expertise in Kotlin, cross-platform mobile and backend development, and experience with both Android and iOS ecosystems, often supported by a degree in computer science or equivalent experience. Familiarity with development tools such as Android Studio, IntelliJ IDEA, Git, and build systems like Gradle, as well as knowledge of Ktor, SQLDelight, and multiplatform libraries, is essential. Excellent problem-solving skills, self-motivation, and proactive communication with clients set top freelancers apart. These skills ensure you can deliver robust, maintainable solutions across platforms while effectively managing projects and client expectations.

What are some common challenges faced by Freelance Kotlin Multiplatform Developers when working with multiple platforms simultaneously?

Freelance Kotlin Multiplatform Developers often encounter challenges related to maintaining consistent functionality and user experience across different platforms such as Android, iOS, and web. Each platform has unique APIs and lifecycle requirements, so adapting shared code while handling platform-specific logic can be complex. Additionally, keeping up with evolving tooling, libraries, and ensuring seamless integration with native code requires ongoing learning and collaboration with other developers or clients. Effective communication and strong project management skills are essential to meet client expectations and deliver high-quality, cross-platform solutions.

What is a Freelance Kotlin Multiplatform Developer?

A Freelance Kotlin Multiplatform Developer is a self-employed software developer who specializes in building applications using Kotlin Multiplatform, a technology that allows sharing code across Android, iOS, web, and desktop platforms. They work on a contract basis for various clients, helping to create and maintain cross-platform apps efficiently. Their expertise includes Kotlin language proficiency, understanding of platform-specific APIs, and experience with integrating shared and native code. Freelance developers often manage multiple projects, collaborate remotely, and must stay updated with the latest Kotlin Multiplatform advancements.
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Freelance Kotlin Multiplatform Developer jobs near you
Infographic showing various Freelance Kotlin Multiplatform Developer job openings in the United States as of May 2026, with employment types broken down into 1% Internship, 18% Full Time, and 81% Part Time. Highlights an 17% Physical, 1% Hybrid, and 82% Remote job distribution, with an average salary of $127,151 per year, or $61.1 per hour.
Kotlin Multiplatform Engineer (Senior-Staff Levels)

Kotlin Multiplatform Engineer (Senior-Staff Levels)

Cantina

Los Angeles, CA • On-site, Remote

$180K - $230K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 11 days ago

Job description

About Cantina:
Cantina Labs is a social AI company, developing a suite of advanced real-time models that push the boundaries of expression, personality, and realism. We bring characters to life, transforming how people tell stories, connect, and create. We build and power ecosystems. Cantina, our flagship social AI platform, is just the beginning.
If you're excited about the potential AI has to shape human creativity and social interactions, join us in building the future!
About the Role:
As a Kotlin Multiplatform Engineer at Cantina, you'll be the architect of our shared-code strategy - building the foundation that powers our experiences across Android, iOS, and web from a single Kotlin codebase. You'll work at the cutting edge of the KMP ecosystem, shipping production code to real users on multiple platforms, while keeping platform-specific layers feeling truly native.
We're looking for a Kotlin expert who has been in the trenches with KMP - someone who has wrestled with interop edge cases, navigated the wasm target, and shipped Compose Multiplatform UI that feels polished everywhere.
What You'll Do:
  • Design and build shared KMP modules covering networking, data persistence, business logic, and domain models used across Android, iOS, and wasm targets.
  • Ship production-grade Compose Multiplatform UIs that feel native and performant on Android, iOS, and web.
  • Build optimized platform-specific targets - leveraging Swift/Obj-C interop for iOS and Kotlin/Wasm for web - to meet the performance and UX bar of each platform.
  • Architect clean platform-expect/actual boundaries and maintain Kotlin/Native and Kotlin/JS interop layers.
  • Set up and manage Koin Multiplatform for dependency injection across all targets, ensuring clean and testable module graphs.
  • Collaborate with platform teams (iOS, Android, web) to align on shared APIs, versioning, and release cadences.
  • Drive KMP best practices across the organization - tooling, testing strategies, CI/CD for multiplatform builds.
  • Lead development of new AI and media-driven features within the shared codebase.
  • Participate in architecture reviews and uphold high standards for shared module design and testability.

What You'll Bring:
  • 8+ years of software engineering experience with deep, expert-level Kotlin - you know the language spec, not just the idioms.
  • Real-world, production KMP experience: you've shipped KMP code that real users ran on Android, iOS, and/or wasm - not just toy projects or internal tools.
  • Hands-on Compose Multiplatform experience: building shared UI across multiple targets with platform-specific adaptations.
  • Experience with Koin Multiplatform for dependency injection across KMP targets in production codebases.
  • Solid understanding of Kotlin/Native memory model, freezing, and interop with Obj-C/Swift APIs.
  • Experience targeting Kotlin/Wasm and/or Kotlin/JS, including the Compose for Web stack.
  • Fluency with multiplatform build tooling: Gradle multiplatform plugin, source sets, target configuration, and CI pipelines.
  • Strong grasp of coroutines, Flow, and structured concurrency - understanding how they behave across targets.
  • Ability to write readable, maintainable, thoroughly documented, and well-tested shared code.
  • Bonus: experience with KMP libraries (Ktor, SQLDelight) in production environments.
  • Bonus: contributions to the KMP/CMP open-source ecosystem or close familiarity with JetBrains' roadmap.

Compensation:
The anticipated annual base salary range for this role is between $180,000-$230,000. When determining compensation, a number of factors will be considered, including skills, experience, job scope, location, and competitive compensation market data.
Benefits:
  • Competitive salary and generous company equity
  • Medical, dental, and vision insurance - 99.99% of premiums covered by Cantina
  • 42 days of paid time off, including:
    • 15 PTO days
    • 10 sick days
    • 15 company holidays
    • 2 floating holidays
  • Generous parental leave & fertility support
  • 401(k) retirement savings plan
  • Lifestyle spending account - $500/month to use however you'd like
  • Complimentary lunch and snacks for in-office employees
  • One Medical membership, and more!

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