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Junior Kotlin Multiplatform Developer Jobs (NOW HIRING)

Conch Technologies Inc

Android Developer

New York, NY · On-site

$61 - $80.25/hr

Title: Android Developer Location : remote Type: 6+ months Note Only W2 No C2C Job Description ... Experience with Kotlin Multiplatform (KMP) for cross-platform code sharing * Write clean, well ...

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 Inc.

Senior Developer

Saint Louis, MO · On-site

$51.75 - $68.25/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

$51.75 - $68.25/hr

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

PeopleSERVE, Inc.

UI Desktop Developer

Manhattan, NY · On-site

$55 - $71.50/hr

... .NET, Kotlin Multiplatform, etc.) • Ensure cross-platform compatibility and optimize the ... a UI Developer with a strong portfolio of cross-platform projects • Proficiency in web ...

Mark43

Lead Mobile Engineer

Boston, MA · On-site

As we continue investing in Kotlin Multiplatform, you'll help determine where shared code ... Partnered with Android engineers to identify opportunities for shared business logic using Kotlin ...

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 · 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 ...

Mark43

Lead Mobile Engineer

Boston, MA · On-site

As we continue investing in Kotlin Multiplatform, you'll help determine where shared code ... Partnered with Android engineers to identify opportunities for shared business logic using Kotlin ...

Nanit

Senior Mobile Developer, Growth (US)

New York, NY · Hybrid

Our team of scientists, engineers, and parents is small but mighty - we share a mission to make ... Work with Kotlin Multiplatform and Compose for iOS - we're already building with it, and we'd love ...

Nanit

Senior Mobile Developer, Growth (US)

New York, NY · On-site +1

Our team of scientists, engineers, and parents is small but mighty - we share a mission to make ... Work with Kotlin Multiplatform and Compose for iOS - we're already building with it, and we'd love ...

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How much do junior kotlin multiplatform developer jobs pay per year?

As of Sep 12, 2026, the average yearly pay for junior kotlin multiplatform developer in the United States is $88,976.00, according to ZipRecruiter salary data. Most workers in this role earn between $67,000.00 and $87,000.00 per year, depending on experience, location, and employer.

What is a junior Kotlin Multiplatform developer?

Junior Kotlin Multiplatform Developers are entry-level software engineers who specialize in building applications using Kotlin Multiplatform technology. They help create apps that share code across multiple platforms, such as Android, iOS, desktop, and web, using the Kotlin programming language. Their responsibilities typically include writing and maintaining code, debugging, collaborating with senior developers, and learning best practices in multiplatform development. This role is ideal for those with basic programming knowledge who want to focus on cross-platform mobile and backend solutions using Kotlin.

What are the key skills and qualifications needed to thrive as a junior Kotlin Multiplatform developer?

To thrive as a Junior Kotlin Multiplatform Developer, you need a solid understanding of Kotlin programming, basic software engineering principles, and familiarity with cross-platform mobile and desktop development. Experience with IDEs like IntelliJ IDEA, knowledge of version control systems such as Git, and exposure to Kotlin Multiplatform libraries are commonly required, while certifications in Android development or related fields can be beneficial. Strong problem-solving, teamwork, and communication skills help you collaborate effectively and learn from more experienced developers. These skills are crucial for delivering maintainable, scalable code and efficiently contributing to cross-functional teams in rapidly evolving technical environments.

What are some common challenges faced by junior Kotlin Multiplatform developers when working on cross-platform projects?

Junior Kotlin Multiplatform Developers often encounter challenges related to managing platform-specific code and ensuring consistent behavior across Android, iOS, and other supported platforms. Understanding platform APIs and properly structuring shared and expect/actual code can take time to master. Collaboration with mobile and backend teams is frequent, so clear communication and version control skills are essential. Over time, developers gain experience in debugging cross-platform issues and optimizing code reuse, which are valuable for career growth.
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Junior Kotlin Multiplatform Developer jobs near you
Infographic showing various Junior Kotlin Multiplatform Developer job openings in the United States as of September 2026, with employment types broken down into 50% Full Time, and 50% Contract. Highlights an 83% In-person, and 17% Remote job distribution, with an average salary of $88,976 per year, or $42.8 per hour.

Senior Mobile Engineer - Kotlin Multiplatform

Austin, TX • On-site

webAI Inc
See more jobs at webAI Incexternal

Full-time

Medical, Dental, Vision, Retirement

Re-posted 15 days ago

Job description

About the Role:
We're building a flagship cross-platform application on Kotlin Multiplatform (KMP) using Compose Multiplatform as well as SwiftUI. The ideal candidate will have a proven track record of developing and deploying native mobile apps using KMP technology.
Responsibilities:
  • Shared KMP modules - You will write shared Kotlin Multiplatform code that provides significant, testable business logic and repositories.
  • Compose Multiplatform UI and Native SwiftUI - You will write user interface code to utilize shared code modules.
  • On-device AI - You will integrate artificial intelligence frameworks both on-device and remotely.
  • Performance - Profile and harden app performance on real devices. Troubleshoot hard, technical bugs.
  • Code review and collaboration - Review human and coding-agent diffs with equal rigor, contribute to project conventions, and mentor teammates. Improve the quality of delivered code.

Qualifications:
  • 4+ years of mobile development with shipped production apps on Android, iOS, or both
  • Strong Kotlin skills including coroutines and Flows.
  • Demonstrated interest in AI engineering
  • Solid experience with mobile tooling and app stores
  • Strong mobile product instincts

Preferred Skills:
  • Compose Multiplatform or strong Jetpack Compose experience, including understanding recomposition stability
  • SwiftUI experience would be beneficial, including comfort working at the Swift/Kotlin boundary via SKIE, Swift Export, and/or hand-written interoperability code
  • Experience working with Rust UniFFI, C++, and JS is a plus
  • Contributions to open-source ML/AI or KMP libraries is a bonus

We at webAI are committed to living out the core values we have put in place as the foundation on which we operate as a team. We seek individuals who exemplify the following:
  • Truth - Emphasizing transparency and honesty in every interaction and decision.
  • Ownership - Taking full responsibility for one's actions and decisions, demonstrating commitment to the success of our clients.
  • Tenacity - Persisting in the face of challenges and setbacks, continually striving for excellence and improvement.
  • Humility - Maintaining a respectful and learning-oriented mindset, acknowledging the strengths and contributions of others.

Benefits:
We strive to provide competitive benefits to all employees. The benefits listed in this posting generally apply to U.S.-based employees. For employees hired outside the United States, benefits may vary based on local law, country-specific requirements, and the employment platform or entity through which the employee is hired.
  • Competitive salary
  • Comprehensive health, dental, and vision benefits package
  • 401(k) match
  • Equity options
  • $200/month Health & Wellness stipend
  • Continuing Education support
  • $500/year Function Health subscription
  • Free parking for in-office employees
  • Flexible Time Off (FTO)
  • Parental leave for eligible employees
  • Supplemental life insurance

webAI is an Equal Opportunity Employer and does not discriminate against any employee or applicant on the basis of age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations and ordinances. We adhere to these principles in all aspects of employment, including recruitment, hiring, training, compensation, promotion, benefits, social and recreational programs, and discipline. In addition, it is the policy of webAI to provide reasonable accommodation to qualified employees who have protected disabilities to the extent required by applicable laws, regulations and ordinances where a particular employee works.

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