Hire Kotlin developers remotelywith guaranteed levels of seniority and hyper vetted quality

Find amazing Kotlin developers with TurnKey. Hire now and spin up your dream engineering team that is fully customized to your specific needs in 30 days or less.

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Customers love TurnKey (and we love them back!)

3 Years in a Row Best in KLAS for Ambulatory Revenue Cycle Management (RCM) Services

"TurnKey is the only offshore firm we've interacted with that really places an emphasis on retention. They seem to be the only ones that understand how important retention is to maintaining strong product development cycles. Our churn rate with TurnKey has been under 5% annually whereas we were at more than 50% with our previous vendor!"

Anya from R1

Anya Alisova (US)

General Manager, R1
Discord Trusted Partner

We've hired 5 full-time software engineers through TurnKey. To date, not a single engineer has left our contract/arrangement. We worked with several U.S.-based recruitment firms, and none matched the speed and quality of candidates referred by TurnKey. Most impressive and unique about TurnKey is their willingness to reach for the perfect candidate. Our requirements are strict, and they did not compromise.

Kyle Dodson

Kyle Dodson (US)

Head of Engineering, Salad Technologies
2021 Brand Excellence Award for Brand Innovation by BCBSA

"It's been nearly two years of us working together and we have not had the need to replace a single developer. The programmers have all performed very well and TurnKey has been able to give us information that has helped to retain our key players."


Mackezie Drazan (US)

CEO of MiResource

We have hired 5 total developers including tech lead, full stack, dev ops and firmware. For each hire, a strong pipeline of candidates was provided, and the TurnKey team performed a lot of pre-screening such that those that entered the funnel were strong and relevant. They also helped with setting salary comp, and closing. Finally they continue to provide HR services as well as legal admin services associated with employment of a geographically diverse group of developers.

Fletcher Wilson

Fletcher Wilson (US)

80+M Downloads

We started with 8 hired developers and there have been no problems with any of the hires. We are currently monitoring them as we do all engineers but there is nothing to report that would make us consider this arrangement with TurnKey anything but successful. The transparent pricing up front as well as the genuine desire to continue improving with each hire we make is a big difference maker for us.

Chris Oh Chief of Staff and Technology Leader at Headspace

Chris Oh (US)

Chief of Staff, CTO
RESNET has been recognized by the U.S. Department of Energy and Environmental Protection

TurnKey provided high-quality talent at a cost-effective price. We employed TurnKey to manage the hiring/HR/Legal for >80% of our entire Product team - from identifying and hiring Team Leads, to agent level support roles. I also appreciated that they were proactive in suggesting certain criteria and requirements when first starting our search for key team lead members.


Ryan Rice (US)

Founder & CEO of ResNet AI Inc.
The Best E-Signature Software According to G2

We reviewed several similar companies and along with the cost the major deciding factor was the quality of experienced candidates TurnKey was presenting to us. The additional team members worked alongside our scrum teams delivering new feature functionality and enhancements to our platform.We're impressed with the quality of their candidates and the work ethic they demonstrate on a day-to-day basis in our agile ceremonies.


Sandy Speirs (US)

Director Of Engineering at Sertifi, Inc.

TurnKey is well versed in the startup ecosystem and really understands our needs when it comes to offshore dev, particularly how our needs may be different than the needs of a huge public company. I don’t have to explain as much to TurnKey as I have had to do with other offshore vendors—they seem to get it on the first take. But at the end of the day, all we really care about is quality, and TurnKey has delivered the goods on this front better than other firms we’ve worked with in the past.

Pat Williams

Pat Williams

CEO & Co-founder at iScribeHealth

Latest Hires

TurnKey only hires the Top 3% of talent across Eastern Europe and Latin America.

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Miranda T.

Middle Kotlin developer

3 years experience

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Victor G.

Middle Kotlin developer

2 years experience

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Darren P.

Senior Kotlin developer

5 years experience

Why Choose TurnKey?

Just a few of the awesome things that make us different from all the rest...

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We custom recruit your Kotlin developers from scratch, ensuring a perfect fit for your needs and culture.

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You are in total control of the team, including when they work, how they work and what they work on.

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We are super transparent about all salaries and fees—you will always know exactly how much your developers are getting paid.

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We have operations throughout Eastern Europe and Latin America so you can pick the country that is the best match for you.

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We have a robust talent retention program that reduces churn by 5x compared to the industry average.

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We are based in Silicon Valley so you always have someone local to call at any time.


Our interests match yours, so you know we're always on your side. We're super open about all the money stuff, including salaries and fees. No surprise charges!

Developer Salary
Taxes & Benefits

  • Since we are agnostic to salary, we find you the very best developer at the very best market price.
  • 100% of all bonuses and equity grants (if any) goes to the developer.

Employer of Record Fee

  • % of salary.
  • This includes all legal, administrative, payroll, liabilities, computers and much more.

Custom Recruiting Fee

  • % of salary for the first 18 months; fees are spread out (instead of one lump sum) to transfer employment risk from you onto TurnKey.
  • This fee is removed after the team member has been onboard for 18 months.

Talent Management Fee

  • % of salary. This includes:
    • HR and retention management program
    • Quarterly executive strategy reviews
    • Competitive compensation reports

So, what are you waiting for? Let's get this party started!

Assemble your dream team in just a few easy steps!


Strategic assessment of your needs


Simple pricing and painless contracting


Custom recruiting of your team


Easy kickoff and onboarding


Start building a great product!


Ongoing talent retention program

When it comes to Kotlin, we’ve got you covered.

TurnKey is your go-to solution for hiring high-quality, high-performing Kotlin developers. From sourcing amazing candidates to signing important contracts (like IP assignment) to managing payroll and taxes for each of your developers, TurnKey takes care of everything so you can just focus on building great software.


🖥 Custom Kotlin App Development

Kotlin developers are experts in crafting custom applications tailored to your unique business needs. They leverage the power of Kotlin to create efficient, scalable, and user-friendly mobile and web applications that resonate with your target audience. By deeply understanding your business goals and end-user requirements, Kotlin developers ensure that every line of code contributes to a solution that not only meets but exceeds your expectations. From elegant UI design to seamless integration of features, custom Kotlin app development services are designed to elevate your brand and enhance user engagement.

🤖 Android App

When it comes to Android app development, Kotlin developers are at the forefront. They harness the capabilities of Kotlin to build cutting-edge Android apps that deliver exceptional user experiences, robust functionality, and seamless performance. Kotlin developers are well-versed in the Android ecosystem, ensuring that your app not only meets the latest design and performance standards but also seamlessly integrates with a wide range of devices and Android versions, reaching a broader audience and maximizing your app's potential.

🖥 Kotlin for Backend Development

Kotlin's versatility extends to backend development, and such developers excel at harnessing its power. They can design and implement efficient server-side solutions using Kotlin, ensuring your back-end is as reliable as your front-end. Whether you need a scalable microservices architecture, real-time data processing, or secure APIs, Kotlin developers will architect and develop a robust backend that supports your applications' performance and scalability needs, all while maintaining clean, maintainable code.

🖇 Kotlin API

Need a robust API to connect your applications and services? Kotlin developers specialize in creating secure, high-performance APIs that facilitate smooth communication between different components of your software ecosystem. They follow best practices in API design and security, ensuring that your data remains protected while enabling seamless data exchange between various systems. With Kotlin API development services, you can streamline business processes and foster innovation through effective data sharing.

🔄 Kotlin Migration

If you're looking to migrate your existing Java codebase to Kotlin for improved maintainability and productivity, top Kotlin developers have the expertise you need. They'll seamlessly transition your projects to Kotlin while ensuring compatibility and reducing technical debt. Kotlin migration services encompass comprehensive code analysis, refactoring, and thorough testing, ensuring a smooth transition that retains the functionality of your existing systems while leveraging the advantages of Kotlin's concise and expressive syntax.

⚙ Kotlin Support and Maintenance

Kotlin developers offer comprehensive support and maintenance services to keep your Kotlin-based applications running smoothly. They proactively identify and address issues, apply updates, and ensure your software remains up-to-date and secure. With support and maintenance from top Kotlin developers, you can focus on growing your business while specialists handle the technical aspects, ensuring your Kotlin applications continue to perform optimally and deliver value to your users.

Enjoy all the amazing benefits of using TurnKey.

30 days

Time to your first custom hire (or less!)


Annual retention rate of our developers

Industry average = 60%


Average increase in product development velocity

Our clients are winning all types of awards with their top quality developers

  • TripleTree iAward

  • Zoom Finalist Marketplace Competition

  • KLAS 2023 Points of Light Award

  • G2 Awards

  • Energy Visionary by California Energy Commission

  • Capterra Best Value

  • GetApp Best Functionality & Features

  • SoftwareAdvice Most Recommended

Looking for more than just Kotlin developers?

When you are building out a development team, you often need multiple players who are skilled in different things. That’s why TurnKey is a perfect partner for your hiring needs across the development stack.

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Front-end Developer

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Mobile Developer

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Android App Developer

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iOS Developer

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UI/UX Designer

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QA Engineer

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Release Managers

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DevOps Engineer

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Java Developer

Key Questions – and Answers! – about Kotlin developers


Why is Kotlin popular?

Kotlin development has gained immense popularity for several compelling reasons. Firstly, Kotlin offers concise, expressive syntax, which reduces code verbosity and enhances readability, making it a favorite among developers. Secondly, it seamlessly interoperates with Java, making it an excellent choice for Android app development and for enhancing existing Java projects. Kotlin also places a strong emphasis on safety, reducing the likelihood of null pointer exceptions and other common programming errors. Lastly, it is backed by JetBrains and Google, which ensures continuous support, updates, and a growing ecosystem of libraries and tools.

How to hire a Kotlin developer?

Hiring a proficient Kotlin developer involves several key steps. Begin by defining your project's specific requirements and the expertise you need. Then, post job listings on relevant platforms or partner with a specialized recruitment agency with experience in Kotlin development. During the interview process, evaluate a candidate's Kotlin proficiency through coding challenges and review their past projects to gauge their experience and problem-solving abilities. It's also essential to assess their familiarity with Kotlin's best practices and their ability to collaborate effectively within your development team.

What skills to look for when you hire top Kotlin engineers?

Top Kotlin engineers should possess a combination of technical and soft skills. Apart from expertise in Kotlin, they should have a solid understanding of object-oriented and functional programming concepts. Strong problem-solving skills, the ability to write clean, maintainable code, and an aptitude for optimizing performance are crucial attributes. Effective communication, teamwork, and adaptability are equally important soft skills that ensure seamless collaboration within your development team, leading to the successful completion of your projects.

Top interview questions to hire Kotlin developers

When interviewing Kotlin developers, consider asking questions that assess their knowledge of the language, its features, and its practical applications. Here are some sample interview questions:

  • Explain Kotlin's nullable and non-nullable types and how they enhance code safety.
  • Describe Kotlin's extension functions and provide an example of when you would use them.
  • How does Kotlin handle asynchronous programming, and what are the advantages of Kotlin coroutines?
  • Discuss the differences between val and var in Kotlin and when you would use each.
  • Provide an example of how you would use Kotlin's data classes and sealed classes in a project.

What are the tools used by Kotlin developers?

Kotlin developers rely on a range of tools and frameworks to streamline their development processes. Common tools include:

  • the Kotlin Programming Language itself, 
  • the Kotlin Plugin for popular Integrated Development Environments (IDEs) such as IntelliJ IDEA and Android Studio, 
  • the Kotlin build tool (Kotlin DSL);
  • frameworks like Spring Boot for backend development; 
  • Android Jetpack for Android app development; 
  • Kotlin Test for testing;
  • Kotlin Serialization for data serialization tasks. 

The choice of tools may vary depending on the specific project's requirements and the developer's preferences.