Kotlin · Jetpack Compose · Spring Boot · Ktor
Hire Kotlin developers
Vetted Kotlin engineers who build Android apps and backend services in your codebase, matched to your stack and budget. On your team in 2–3 weeks.
Rated 5.0 on Clutch · CVs in 3–5 days · No long-term lock-in
- Kotlin
- Jetpack Compose
- Coroutines
- Spring Boot
- Ktor
- Kotlin Multiplatform
What does a Kotlin developer do?
A Kotlin developer builds software in Kotlin, a concise, type-safe language that is the standard for Android and also runs on the JVM backend. Most build Android apps with Jetpack Compose; others write server-side services with Spring Boot or Ktor, or share code across platforms with Kotlin Multiplatform.
DevKit Kotlin developers work with Jetpack Compose, coroutines and the Android Jetpack libraries, or with Spring and Ktor on the server, and join your team in your tools and processes. Every one of them passes a technical interview with our senior engineers before you see their CV.
When to hire one
- Building new features in an existing Android app
- Moving XML layouts to Jetpack Compose
- Kotlin backend services with Spring Boot or Ktor
- Sharing business logic across Android and iOS with Kotlin Multiplatform
What our Kotlin developers do
Typical work our Kotlin engineers take on for clients.
Jetpack Compose interfaces
Android screens built from your designs in Compose, with a consistent, reusable component set.
Android architecture
MVVM or MVI with Hilt, Room and Navigation that keeps features modular and testable.
Coroutines and Flow
Asynchronous code with coroutines and Flow that stays readable and avoids leaks and race conditions.
Backend services
REST and gRPC services in Spring Boot or Ktor, with clean data access to PostgreSQL and Kafka.
Kotlin Multiplatform
Shared networking, data and business logic for Android and iOS, with native UI on each platform.
Testing and release
Unit, UI and integration tests, CI pipelines and Google Play releases.
Kotlin technologies we cover
Android
- Jetpack Compose
- Android SDK
- Hilt
- Room
- Retrofit
- Jetpack Navigation
Language and multiplatform
- Kotlin
- Coroutines
- Flow
- Kotlin Multiplatform
- Compose Multiplatform
- Java
Backend
- Spring Boot
- Ktor
- Exposed
- PostgreSQL
- Kafka
- gRPC
Testing and tooling
- JUnit
- MockK
- Espresso
- Gradle
- Firebase
- Google Play Console
Matched to your budget: which level do you need?
We match the level to the work, so you don't pay senior rates for tasks a mid-level engineer handles well, or put critical work on the wrong hire.
Junior
Well-defined tasks with guidance
Bug fixes, tests and smaller features in an established codebase, with a senior on your team to review their work. The most budget-friendly option.
Mid-level
Independent feature work
Builds features end to end in an existing architecture with little supervision. The best value for most product teams.
Senior
Complex features and ownership
Owns complex parts of the system, makes sound technical decisions and mentors others. Worth it where mistakes are expensive.
Tech lead / Architect
Architecture and team leadership
Designs the system, sets standards and leads other engineers. Ideal for new products, rewrites or a team without technical leadership.
Not sure? Tell us the work and your budget on a free call, and we'll recommend the right level for each role.
What's in every profile we send
Within 3–5 business days of our call, you get a shortlist of vetted candidates. Every profile gives you what you need to decide quickly.
- 01
Skills verified by engineers
Each candidate passes a technical interview with our senior engineers. You see what they can actually do, not just what their CV says.
- 02
Interviewer's notes
Strengths, gaps and how the candidate approached the interview tasks, written by the engineer who interviewed them.
- 03
Why this match
How the person fits your role, your team and your budget, and which level we recommend for the work.
- 04
Level and relevant experience
From junior to tech lead, with the projects and domains that matter for your role.
- 05
English, time zone and availability
Communication level, working-hours overlap with your team and the earliest start date.
- 06
A clear monthly rate
One price per engineer per month, so you can compare candidates against your budget straight away.
Client reviews: rated 5.0 on Clutch
Verified Clutch reviews from engineering leaders and founders who scaled their teams with DevKit.
Head of Engineering, IT Company
“Their flexibility and ability to provide access to talented specialists.”
Read on ClutchLead Frontend Engineer, Ultra Commerce
“We were particularly impressed by their management approach.”
Read on ClutchSenior Unity Engineer, Software Company
“Their management side always cared about the engineers provided.”
Read on ClutchCEO, Software & AI Company
“Their responsiveness and the quality of the engineers were impressive.”
Read on ClutchDevOps Engineer, Ubiqube
“They were always ahead of schedule and suggested a lot of modern solutions.”
Read on ClutchSenior Software Engineer, HealthTech Firm
“They combine technical expertise with a strong understanding of business objectives.”
Read on ClutchTeam Lead, AI Solutions Co
“DevKit has found an approach that works well with startups.”
Read on ClutchThree ways to hire
Choose how you want to work. You can switch models as your needs change.
Hiring Kotlin developers: FAQ
How quickly can I hire a Kotlin developer through DevKit?
You usually receive vetted Kotlin CVs within 3–5 business days, and the developer typically starts within 2–3 weeks of the first call. If the fit isn't right, we replace them free of charge.
Do your Kotlin developers work on Android, the backend or both?
Both. Most of our Kotlin developers focus on Android with Jetpack Compose, coroutines and Hilt, while others build backend services with Spring Boot or Ktor, and some work with Kotlin Multiplatform. Tell us your stack and we'll match to it.
Do I need a senior Kotlin developer?
Not always. If your architecture is set and someone senior reviews the code, a mid-level developer often delivers the same features for less. For a new app or service architecture, a Compose or Multiplatform migration or serious performance problems, a senior engineer or tech lead is usually worth it. We'll recommend the right level on a free call.
How much does it cost to hire a Kotlin developer?
Staff augmentation is billed as a monthly rate per engineer, depending on the level and stack. Tell us your budget and we'll match Kotlin developers to it; exact rates come with the first CVs.
Need engineers next month? Let's talk this week.
Send us the role. Get CVs in 3–5 days.
Tell us what you need. We reply within one business day.
What happens next
- 1
We reply within one business day
A real person reads every request, not a bot.
- 2
A free 30-minute call
We talk through the role, your team, the timeline and the budget.
- 3
Vetted CVs in 3–5 days
Each profile comes with interview notes and a clear monthly rate.
“Their responsiveness and the quality of the engineers were impressive.”
hi@devkit.agency