Kotlin: market
Kotlin is the modern JVM language: primary for Android development and increasingly common in server-side backend with Spring and Ktor. We track 3 053 open positions listing Kotlin, 2 939 of them fresh. Kotlin is fully Java-interoperable, so teams migrate gradually, and Kotlin Multiplatform extends it to iOS and desktop. Most of the demand comes from Mobile, Backend and Fullstack roles. It most often appears next to Java, Jetpack Compose and AWS. 47% of the postings allow fully remote work. Below is a live slice of Kotlin developer demand.
The Kotlin market currently has 3,053 open roles, 2,939 of them freshly observed. Median salary $8,059/mo. Observed candidate pool — 1,785.
47% of Kotlin postings allow fully remote work; the share counts only postings that state the work format.
⚠ salary known for 225 of 3053 jobs; remote share from 2600 with a stated format; 2939 counted as fresh observations; trend and hiring difficulty are not shown
Timeline: postings and sources
How many Kotlin postings appeared each week since 10 Aug, and from how many sources. The second line separates market growth from coverage growth: a jump in the week new sources were connected means we started seeing more, not that the market grew.
New postings and active sources per week
Sources over the period: 177
New sources connected: 17 Aug +27 · 24 Aug +18 · 31 Aug +10 · 7 Sept +19 · 14 Sept +13 · 21 Sept +23 · 28 Sept +9 · 5 Oct +6 · 12 Oct +14
Week = posting first-seen date, all statuses. A posting belongs to the technology by its stack tag; the series starts on 10 Aug 2026 — earlier tags were assigned differently and are not comparable. Sources are distinct collection channels; their names are not published.
Salaries over time
Median Kotlin salary per week, USD per month.
Median salary, USD per month
Only postings with a USD salary and a known period (month or year), $500–$50,000 per month. Weeks with fewer than 10 such postings are left blank — that means no data, not zero.
Remote work over time
Share of Kotlin postings offering fully remote work, per week.
Remote postings, %
The share is among postings that state a format (remote, hybrid, office). Weeks with fewer than 10 such postings are left blank.
Countries over time
How the share of Kotlin postings in each of the top countries changed, per week.
Postings in the country, %
Share among postings with a known country; the chart shows the five countries with the most postings over six months. Weeks with fewer than 20 postings with a known country are left blank. A rising share can mean a newly connected source in that country rather than market growth.
Demand and observed supply
| Open demand | 3,053 |
| Observed supply | 1,785 |
⚠ candidates matching a vacancy are not counted yet: demand and the observed pool are shown
Salary distribution
One in ten earns under $3,940, one in ten over $17,833. Half the market falls between $6,062 and $15,208. Sample: 225.
The range histogram for Kotlin postings uses only postings with an explicit compensation range; the median is computed over the same sample.
Demand geography
| country | jobs |
|---|---|
| US | 621 |
| PL | 570 |
| DE | 183 |
| RU | 158 |
| GB | 138 |
| IN | 105 |
| CA | 94 |
| BR | 61 |
| SG | 54 |
| FR | 33 |
The top country for Kotlin demand is the US (621 positions).
⚠ job counts only: salary by country is not published
Used together with
Kotlin most often appears next to Java, Jetpack Compose and AWS. Jetpack Compose among the neighbours marks Android postings, Java — server-side backend.
Roles that use it
| role | jobs |
|---|---|
| Mobile | 841 |
| Backend | 822 |
| Fullstack | 364 |
| DevOps | 160 |
| Architect | 107 |
| QA | 99 |
| Frontend | 54 |
| Data | 51 |
| ML/AI | 46 |
| Security | 36 |
⚠ the `Other` and `IT` buckets are excluded as non-roles
Demand by grade
| grade | jobs |
|---|---|
| senior | 1,058 |
| lead | 446 |
| principal | 251 |
| middle | 191 |
| junior | 100 |
Senior-and-above is about 86% of 2 046 graded Kotlin postings.
⚠ demand side only: the grade of the observed pool is unknown for most of it
Employers
Demand is spread across 1,062 employers. The largest accounts for 14.3%, the top ten for 26.3%; the remaining 73.7% is long tail.
| share | value |
|---|---|
| top-1 | 14.3% |
| top-3 | 20.4% |
| top-10 | 26.3% |
| long tail | 73.7% |
⚠ names are not shown: staffing agencies and end employers are not yet told apart by the classifier
Where Zorky sees this market
Observed across 124 sources; the largest accounts for 30.6% — this market does not rest on a single channel.
Kotlin postings arrive mostly from ATS & career sites and job boards & aggregators.
Recent openings
- React/React-Native Developer Part-Time (Fully Remote) · US
- Senior Software Engineer (Java / Kotlin) - Product Page · PL · $5,594
- Guidewire BillingCenter Developer - IT Contracting · PL
- Senior Mobile Engineer (iOS & Android) · PL · $7,291
- Senior Android Developer (Kotlin) - Accessibility · PL
- Senior Android Developer · PL
- Senior Software Engineer, Consumer · US
- Staff Software Engineer, Android · IN
Adjacent markets
⚠ adjacent markets for comparison are not defined yet
How this is measured
- Vacancy
- an open job that cleared the quality gate and lists at least two technologies
- Observed candidate
- a candidate whose stack contains this technology; an aggregate — not a single record leaves the perimeter
- Matchable candidate
- not counted yet
- Window
- jobs open at the moment the snapshot was built
About the data
- Some breakdowns are hidden: their data coverage is not yet sufficient.
- Statistics are shown only where the sample clears a quality gate.
- A missing block does not mean a value of zero.
Breakdowns currently hidden: 7.
Data as of 2026-10-23
Frequently asked questions
Common questions about the Kotlin market — short answers from the same data slice.
Is Kotlin only for Android?
No: a notable share of postings is server-side backend on Spring Boot or Ktor, where Kotlin replaces Java. Another growing niche is Kotlin Multiplatform for shared iOS and Android code.
Do I need Java to work with Kotlin?
It helps: the ecosystem is shared (JVM, Gradle, libraries), and in real projects Kotlin code lives next to Java code. Java appearing in Kotlin job requirements reflects exactly that.
What is asked of a Kotlin Android developer?
Coroutines and Flow, Jetpack Compose, architecture (MVVM, MVI), DI (Hilt or Koin), networking and local storage, tests.
How remote-friendly are Kotlin jobs?
47% of postings with an explicit format allow fully remote work; the slice tracks 3 053 open Kotlin positions.