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Senior Kotlin Multiplatform Engineers Trusted by Enterprise CTOs

Hire Kotlin Multiplatform Devs
Hire Kotlin Multiplatform Devs
Kotlin Multiplatform Technology Logo

Pioneers in Kotlin Multiplatform

We were early adopters of Kotlin Multiplatform at a time when most teams were still skeptical about production readiness.

Whether you’re starting a KMP project from scratch or migrating an existing app, stability is guaranteed.

Our iOS developers work in Kotlin Multiplatform as well!

Types of KMP Development Services

Cross-platform API integration

We build a shared Kotlin Multiplatform logic layer for iOS and Android, covering authentication, payments, analytics, and core business logic.

This ensures consistency across platforms, fewer integration issues, and faster QA cycles in enterprise environments.

Platform-Specific UI/UX Design

Native user experience is preserved on both iOS and Android while shared logic runs in Kotlin Multiplatform.

This allows enterprise teams to meet strict UX expectations per platform without maintaining two separate backend implementations.

Native Feature Integration

Platform-specific capabilities such as push notifications, GPS, camera, biometrics, and sensors are implemented natively where needed.

This ensures full device functionality while maintaining shared business logic across iOS and Android.

Kotlin Multiplatform Consulting & Migration

Support for teams adopting KMP or scaling existing implementations in enterprise environments, including integration into ongoing mobile projects, migration from native or cross-platform codebases, stabilization of architecture in projects with increasing delivery risk, and enabling in-house teams or external partners to work effectively with Kotlin Multiplatform.

Apps We Built For Clients

Don’t Just Take Our Word For It, See What Our Clients Say.

More testimonials

“Thanks to Aetherius, the client met deadlines, maintained quality, and handled multiple projects without slowing down development. The team managed the project well and communicated through virtual meetings. The client also praised the developers' seniority and their quick integration.”

Client's Logo
Endre Tóth
CEO, Appsoluty Software

“Aetherius built SDKs for our apps across multiple platforms. The development process was smooth, and working with their team was a good experience from start to finish. Any questions we had were handled quickly.”

Client's Logo
Igor Lyubimov
Founder & CEO at web2wave

"Aetherius helped the client improve revenue and customer ratings. The team always provided content on time and took the initiative to solve things really quickly."

Felix Wolf
Senior Consultant & Program Manager, Merkle DACH

"Aetherius' work achieved the correct functionality, satisfying the client's expectations, and planning to collaborate on a larger project in the future."

Client's Logo
Mike Ralph
Managing Director, Band of Coders

"What stood out most about Aetherius was their exceptional adaptability and dynamic problem-solving approach."

Wheretogo Client's Logo
Yogesh Veeraraj
CTO, Wheretogo

"I worked with Aetherius team on an early-stage project. They were great at taking direction and executing a functional prototype of our concepts.

Would love to work with his team again."

Kin Client's Logo
Dmitry Zolotaryov
Ex Engineering Manager at Kin Social

"We have had a great experience with Aetherius Solutions. Their skilled developers provided us with clear and detailed information, ensuring effective communication throughout the project.

I would highly recommend them for any project you might have."

Client's Logo Ing
Srdjan Miladinovic
Sales Operations Manager,Ingsoftware

"Aetherius team reassured us with their experience and knowledge that there are still companies that respect agreements. We successfully executed our plans, and the team followed our desires throughout, consistently working on the Salona application."

Salona Client's Logo
Djordje Dimitrijevic
Founder & CEO, Salona

"We had a specific industry problem and wanted to help people solve it with a unique app. Our first plan was to test the MVP version in a couple of smaller cities in Serbia, but we didn't expect to encounter such positive reactions from users so quickly. Aetherius's team developed the first version in just 1 month with O bugs and issues!"

Znam Majstora Client's Logo
Katarina Ristic
Founder & COO, Znam Majstora

"Aetherius successfully completed the app, meeting our expectations.

Moreover, the team communicated effectively and frequently via email and messaging apps, ensuring a smooth collaboration. Overall, their promptness and ability to deliver on time were hallmarks of their work."

Marija Milosevic
Owner of SmartBIN

"Aetherius developers immediately identified why my app was experiencing bugs that had been a problem for over a year! After that, the number of downloads increased, and users told me it felt like they were using a completely new app. I especially appreciate their detailed reporting on the process."

Client's Logo
Hristina Lazarevic Milosevic
Founder and CEO, Avoid Additives

"Aetherius successfully delivered a functional cross-platform app on schedule, meeting all requirements. The team established a CI/CD pipeline and monitoring framework, enabling rapid iteration cycles. Aetherius' project management was well-structured and responsive. Their technical depth stood out."

Client's Logo
Vladimir Brkovic
BDM, Codepixel
Aleksa Simic CTO at Aetherius Mobile App Development Company ImageAleksandra Miljkovic Business Developer at Aetherius Image

Tell us about your project

You’re one step away from getting the right developers.

"Working with Aleksa and his team at Aetherius has been a great pleasure! He is very understanding, especially for people like me who aren't tech savvy, makes time to work on issues that come up, and is always willing to work hard to find a solution."

Erkin Jumayev
Erkin Jumayev
Co-Founder of Mindguard

"I worked with Aetherius team on an early-stage project. They were great at taking direction and executing a functional prototype of our concepts. Would love to work with his team again."

Dmitry Zolotaryov
Dmitry Zolotaryov
Ex Engineering Manager at Kin Social

"Aetherius developers immediately identified why my app was experiencing bugs that had been a problem for over a year! After that, the number of downloads increased, and users told me it felt like they were using a completely new app. I especially appreciate their detailed reporting on the process. Their team is reliable and truly cares about the success of my app!"

Hristina Lazarević Milosević
Hristina Lazarević Milosević
Founder and CEO, Avoid Additives

"What stood out most about Aetherius was their exceptional adaptability and dynamic problem-solving approach."

Yogesh Veeraraj
Yogesh Veeraraj
CTO, Wheretogo

"Aetherius' work achieved the correct functionality, satisfying the client's expectations, and planning to collaborate on a larger project in the future."

Mike Ralph
Mike Ralph
Managing Director, Band of Coders

“We had a specific industry problem and wanted to help people solve it with a unique app. Our first plan was to test the MVP version in a couple of smaller cities in Serbia, but we didn't expect to encounter such positive reactions from users so quickly. Aetherius Solution’s team developed the first version in just 1 month with 0 bugs and issues!”

Katarina Ristić
Katarina Ristić
Founder & COO, Znam Majstora

"We have had a great experience with Aetherius Solutions. Their skilled developers provided us with clear and detailed information, ensuring effective communication throughout the project. I would highly recommend them for any project you might have."

Srdjan Miladinovic
Srdjan Miladinovic
Sales Operations Manager, Ingsoftware

"Aetherius Solutions helped the client improve revenue and customer ratings. The team always provided content on time and took the initiative to solve things really quickly. ”

Felix Wolf
Felix Wolf
Senior Consultant & Program Manager, Merkle DACH

"Aetherius successfully completed the app, meeting our expectations. Moreover, the team communicated effectively and frequently via email and messaging apps, ensuring a smooth collaboration. Overall, their promptness and ability to deliver on time were hallmarks of their work."

Marija Milošević
Marija Milošević
Owner of SmartBIN

"Aetherius Solutions team reassured us with their experience and knowledge that there are still companies that respect agreements. We successfully executed our plans, and the team followed our desires throughout, consistently working on the Salona application."

Djordje Dimitrijević
Djordje Dimitrijević
Founder & CEO, Salona

"Their team was very easy to work with, and they genuinely cared about the success of our project. They managed the project efficiently, kept us updated regularly, and always responded quickly to changes or feedback."

Nemanja Dimic
Nemanja Dimic
Founder & CEO, BIT Events
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FAQ

How do you reduce delivery risk when introducing Kotlin Multiplatform into an existing app?
What if our iOS team is not familiar with Kotlin Multiplatform?
How do you prevent Kotlin Multiplatform from slowing down our existing teams?
Can your engineers integrate into our existing engineering team without disrupting workflows?
What makes your Kotlin Multiplatform engineers different from typical mobile contractors?
How do you handle complex native features in a KMP architecture?
What happens if our current architecture is not ready for KMP?
How do you ensure both iOS and Android teams stay aligned when using KMP?
Is Kotlin Multiplatform suitable for scaling teams and enterprise environments?
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