Kotlin Agency : Kotlin over Java

Our team of experts uses Kotlin to avoid common Java bugs, improve development speed, and boost the attractiveness of your JVM stack

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Kotlin is the new Java for finance

Interfaceable with Java, Kotlin is the only language combining stability, compatibility with banking IT systems, and a strong popularity among developers : it is the 4th favourite language among developers in 2019, according to StackOverflow.

Key figures


less NullPointerException


less verbose compared to Java


favourite language among developers

Our Kotlin projects

Crystal du background

Why Kotlin ?

Compared to Java, Kotlin offers advantages in terms of quality, productivity and attractiveness, while staying fully compatible with the Java ecosystem and existing IT systems  :
  • It reduces the amount of bugs by avoiding the NullPointerException and introducing nullable and non nullable variables. Pinterest dropped the number of exceptions by 40% by migrating their Android app from Java to Kotlin
  • It enhances development speed by reducing Java verbosity between 25% and 35%
  • It attracts talents by standing at the  4th position of the most popular language among developers, when Java is the 18th
  • It can coexist with Java files and ecosystems, mainstream IDEs even allowing code conversion from Java to Kotlin

Latest Kotlin articles

Are Kotlin and finance a good match ?

Is Kotlin ready to overthrow Java ? Does it have what it takes to become the new standard for IT systems, or is it only adapted for Android fintech apps ?
Read article

Automated Liquidbase migration generation

By combining plugins, it becomes possible to automatically generate Liquidbase migrations based on Kotlin-written Hibernate entities.
Read article

Contact us


48 Bd des Batignolles
75017 Paris


+33 1 53 24 53 23


Sipios is part of the M33 Start-up studio. We design digital products from the needs of the end-users and use the latest technologies to develop them in record time. Our focus is the impact on the business.

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