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Interactive technology comparison · 32 languages & frameworks

Kotlin vs. Ruby: Comparison, differences & use cases

Kotlin and Ruby compared: differences, strengths and use cases – with the job market live from real postings and suitability per use case.

Python vs. Java Python vs. JavaScript Python vs. TypeScript React vs. Angular React vs. Vue React vs. Next.js
Active jobs
116
Since
2011
Typing
statisch
VS
Active jobs
7
Since
1995
Typing
dynamisch

Kotlin leads in 6 of 8 use cases.

Live from 7,804 jobs

Who wins on the job market?

Real figures from all IT jobs currently published on Jobriver – not estimates. Every number states its basis.

Open positions

Kotlin is sought in 17 times as many job ads.

Remote or hybrid

Kotlin 46 %
Ruby 14 %

Basis: 116 and 7 jobs respectively

Senior & lead

Kotlin 39 %
Ruby 43 %

Junior jobs: 6 and 0 respectively

Salary according to job ads

Kotlin €57,500n = 87
Ruby too few jobs with salary (n = 3) –

Editorial assessment

Suitability by use case

0 to 100 per use case. Hover over an axis for the values – everything is listed as a table below.

6:1use cases ahead · 1 tied

Web backend 1 Frontend & dashboards 2 Data science & ML 3 Mobile apps 4 Systems programming 5 Scripting & automation 6 Game development 7 DevOps & cloud 8
Suitability per use case
Use caseKotlinRuby
1Web backend 80good fit 80good fit
2Frontend & dashboards 30less suitable 20less suitable
3Data science & ML 45suitable 25less suitable
4Mobile apps 95excellent fit 20less suitable
5Systems programming 45suitable 15less suitable
6Scripting & automation 55suitable 75good fit
7Game development 55suitable 25less suitable
8DevOps & cloud 60suitable 45suitable

Profile

Side by side.

KotlinRuby
2011 Year released 1995
Multiparadigma (OOP, funktional) Paradigm Multiparadigma (OOP, dynamisch)
statisch Typing dynamisch
Performance
Popularity
Learning curve (lower = easier)

Kotlin ist eine pragmatische, statisch typisierte JVM-Sprache. Offizielle Sprache für Android und zunehmend im Backend (Ktor, Spring) beliebt.

Ruby ist eine dynamische Sprache mit Fokus auf Lesbarkeit und Produktivität. Bekannt vor allem durch Ruby on Rails im Web-Backend.

Market demand is based on real, active IT job ads on Jobriver. The 1-5 ratings are editorial assessments.

Strengths & weaknesses

What speaks for which?

Kotlin

Pros

  • Moderner und kompakter als Java
  • Offizielle Sprache für Android
  • Voll interoperabel mit Java/JVM
  • Null-Sicherheit im Typsystem

Cons

  • Kleinere Community als Java
  • Längere Build-Zeiten
  • Außerhalb von Android/JVM wenig verbreitet
View Kotlin jobs

Ruby

Pros

  • Sehr lesbare, elegante Syntax
  • Hohe Produktivität, besonders mit Rails
  • Ausgereiftes Web-Ökosystem (Gems)
  • Angenehmer Einstieg

Cons

  • Geringere Laufzeit-Performance
  • Nachfrage rückläufig gegenüber der Hochzeit
  • Außerhalb des Webs kaum verbreitet
View Ruby jobs

Finder

Which one suits you?

What do you want to build?
What matters to you?
Type

How we calculate: average suitability for your use cases, +15 % weight per selected priority (learning curve, performance, jobs relative to the leader). Tie → alphabetical.

    More match-ups

    How else does Kotlin fare?

    vs Kotlin vs. Python Die lesbare Allzwecksprache für Data & Web Compare vs Kotlin vs. Java Der robuste Enterprise-Klassiker Compare vs Kotlin vs. JavaScript Die Sprache des Web - überall lauffähig Compare vs Kotlin vs. TypeScript JavaScript mit statischen Typen Compare vs Kotlin vs. C# Microsofts vielseitige .NET-Sprache Compare vs Kotlin vs. PHP Die pragmatische Sprache des Webs Compare

    FAQ

    Frequently asked questions about Kotlin and Ruby

    Salary comparison by role · IT skill trends

    What is the difference between Kotlin and Ruby?

    In the suitability comparison Kotlin leads in 6 and Ruby in 1 of 8 use cases; in the rest both are level. Kotlin fits Mobile apps best, Ruby fits Web backend best.

    How many jobs are there for Kotlin and Ruby?

    Currently 116 open IT jobs on Jobriver mention Kotlin, and 7 mention Ruby. Of these, 53 and 1 respectively are remote or hybrid.

    Is Kotlin or Ruby better for starting a career?

    For career starters there are currently 6 jobs with Kotlin and 0 jobs with Ruby; for senior and lead roles there are 45 and 3.

    Where are most jobs for Kotlin and Ruby?

    Most Kotlin jobs are in Berlin, most Ruby jobs are in Berlin.

    What do you earn with Kotlin compared to Ruby?

    In job ads with a salary, the median annual salary for Kotlin is EUR 57,500 gross and for Ruby EUR 69,500 gross (median of 87 and 3 ads).

    Decided? Then on to the job.

    Active IT jobs with exactly this technology – with salary, remote share and tech stack.

    Kotlin jobs Ruby jobs