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Hire experts in Kotlin

Post a project and get matched with Kotlin experts. Matched in 24 hours. No agency fees.

1
Post your project
Takes 3 minutes
2
Meet your expert
Within 24 hours
3
Launch your project
Flexible payment options
+14k more Kotlin experts on Twine
Chen C.
Developer
★★★★★ 5.0
Daniel W.
Developer
★★★★★ 5.0
RONJIE M.
Developer
★★★★★ 5.0

Trusted by 10,000+ companies of all sizes

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Meet the experts behind high growth companies.

Every Developer's portfolio and application is manually reviewed by our Customer Success team. You only see vetted matches.

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Developer

10 years programming professionally, developing mostly in Erlang,Python and JavaScript. I've been heavily influenced by functional programming languages such as Clojure....

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Developer

AngularJS, API, App Design

Full-stack web developer with 3+ years of experience building business websites, SaaS platforms, and custom web applications. I help clients design and launch modern, ...

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I am an engine-oriented developer with a passion for C++ game engine development and physics simulation implementation. With a strong background in graphics pipelines and...

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Developer

I’m Kulwinderjeet Singh, a results-driven mobile app developer with over 6 years of experience designing, developing, and maintaining high-quality Android and cross-platf...

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Developer

.NET, AI Collection (Audio), AI Collection (Video)

I am an executive-level Solution Architect with over 14 years of experience designing high-performance technology ecosystems for fintech, compliance, and healthcare. I le...

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Developer

Hello, I’m Abhishek Kashyap, a passionate Full-Stack Developer and digital entrepreneur who thrives on building modern web and Android apps. I love turning complex proble...

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I am a Senior Software Developer with extensive experience in C# and ASP.NET Core, having worked at companies like ITQ Business Solutions and Utilita Energy. I specialize...

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Developer

I am a highly experienced Software Engineer with over 5 years dedicated to designing scalable backend systems, interactive web applications, and intuitive Android solutio...

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Developer

Hi, I’m Tejas Chorge, a Senior Frontend / Full Stack Engineer with 4.8+ years of experience owning and delivering scalable, high-performance web and mobile applications. ...

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We have over 14,500 Developers who've worked in many different industries and cover various styles and skillsets.

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What companies hire Developers for

Projects that brands and startups post most often.

MVP build

End-to-end build of a v1 product, front-end, back-end, and deployment.

Build your MVP

Shopify storefront build

Theme dev, custom checkout, app integrations, and performance optimisation.

Build your storefront

API & integrations

Build and connect third-party APIs, payment, email, analytics, CRM.

Connect your APIs

AI feature integration

Add an AI/LLM feature to an existing product.

Integrate AI

Let's get more local

See which of Twine's top rated Developers are near you

Reviews

Trusted by companies around the world

Working with Emmanuel was a great experience. He was professional, communicated clearly throughout the project, and delivered the TrendSphere eCommerce Solution on time. The quality of his work exceeded my expectations, and he was always open to feedback and quick to make any requested adjustments. I highly recommend...

Forlan @ zenithsphere

Jul 28, 2026

Omais is a highly skilled and reliable freelancer who did a fantastic job on my Web App project. I trusted him with complex technical tasks, including working directly within a Windows Server VPS environment, and he handled everything seamlessly. He is professional, efficient, and delivers great results. I highly recommend...

Julio @ Two Brothers Flooring, LLC

Jul 13, 2026

Gideon did a great job setting up and designing our Shopify store. He made the layout attractive, organized the products properly, and ensured the store works smoothly on both phones and computers. His attention to detail and support were excellent.

Sterling @ Lesch Clothing

Jul 10, 2026

Studying this web module made complex backend concepts completely clear. Instead of just reading theoretical documentation, examining the logic flow, database queries, and route configurations in this project showed me exactly how professional applications handle user inputs and system state

CARPA @ CARPA

Jul 9, 2026

Hello we are very satisfied from that work

Tejal @ opirawebs

Jul 4, 2026

I worked with Daniil Sereda on LiberSave, a fintech platform that includes a payment gateway and a voucher management system for physical and digital goods. During our collaboration, Daniil demonstrated strong technical expertise, professionalism, and a reliable approach to software development. He consistently delivered...

Roman @ LiberSave

Jun 30, 2026

5 star reviews

Clients Rate Twine Kotlin Developers 5.0 / 5.0

on average across 287 reviews

How it works

  1. 1

    Post your project

    3–5 minutes. Tell us about your project, your timeline, and how you want experts to contact you.

  2. 2

    Meet your expert

    Within 24 hours, you'll see a shortlist of vetted Developers matched to your project.

  3. 3

    Launch your project

    Flexible payments on your terms, bill experts directly or use the Twine vault for added security.

How pricing works on Twine

Transparent rates, no hidden markup, and a payment path for every need.

The quote is the number.Nothing added on top.

Agencies bury a 20–40% markup inside the retainer, you never see it. On Twine, you set the price and you see the platform fee as a separate, explicit line. No surprises at checkout.

No hidden markup

Pay direct.0% commission.

Prefer your own payment flow? Pay your expert outside Twine, incurring no commission fees. Most useful for ongoing or trusted relationships.

0% off-platform payments

Pay via Vault.Your money is protected.

Funds are held in escrow and only released when you approve the deliverables. If the work isn't right, your money doesn't move. 10% commission on payments up to $10,000, just 5% on anything above.

10% up to $10k · 5% over $10k

Estimate your budget

Pick the role, the experience level and how long you need. We’ll show you what similar projects have cost on Twine. It’s a guide, not a quote.

Your project

Mid-level (3–5 yrs)
2–4 weeks

Estimates based on research on US and European freelancers. Actual budget is set by you and agreed with your expert before any work begins.

ESTIMATED RANGE

$4,800 $13,000

How we got here

  • Mid-level day rate: ~$475–$645/day
  • 2–4 weeks = 10–20 working days
  • Range: $4,800–$13,000

Twine vs. the alternatives

Frequently asked questions

Common questions answered before you post a project.

A Kotlin Developer specializes in using the Kotlin programming language to create applications, primarily for Android platforms. Their role encompasses designing, coding, testing, and maintaining software solutions. Key responsibilities include:

  • Building robust mobile applications.
  • Integrating APIs and third-party services.
  • Writing clean, maintainable code.
  • Debugging and troubleshooting issues.
  • Collaborating with UI/UX designers for optimal user experience.

They may also work on server-side applications, leveraging Kotlin’s versatility. In a rapidly evolving tech landscape, Kotlin Developers are sought after for their ability to enhance app performance and user engagement.

Exceptional Kotlin Developers possess a unique blend of technical and interpersonal skills that elevate their performance. Key qualities include:

  • Proficiency in Kotlin and related frameworks.
  • Strong problem-solving abilities and analytical thinking.
  • Excellent communication skills for team collaboration.
  • Adaptability to new technologies and methodologies.
  • Attention to detail and a commitment to code quality.

These traits enable them to produce high-quality applications efficiently, making them invaluable assets to any project.

Typical day rates for Developers vary by experience level:

  • Junior: 340 - 465 USD
  • Mid-level: 475 - 645 USD
  • Senior: 595 - 805 USD
  • Expert: 735 - 1,000+ USD

These are indicative ranges based on Twine project data. Final budgets depend on project scope and are agreed directly with your freelancer.

Estimate your cost using our calculator →

To find the perfect Kotlin Developer, focus on a few key indicators:

  • Relevant experience in similar projects or industries.
  • A strong portfolio showcasing their work.
  • Positive client reviews and recommendations.
  • Technical proficiency demonstrated through coding tests or interviews.
  • An understanding of your specific project requirements and goals.

By assessing these factors, you can identify a developer who aligns with your project vision and technical needs.

When interviewing a Kotlin Developer, consider asking the following questions to gauge their suitability:

  • Can you describe your experience with Kotlin and related technologies?
  • How do you approach debugging and problem-solving?
  • What are some best practices you follow in code quality?
  • Can you walk us through a recent project and your role in it?
  • How do you stay updated with the latest developments in Kotlin?

These questions will help you assess their technical skills, experience, and approach to development.

Hiring a Kotlin Developer involves several steps to ensure you find the right fit for your project:

  • Define your project requirements and goals clearly.
  • Determine the level of expertise needed (beginner, junior, mid-level, senior, expert).
  • Use platforms like Twine to find vetted candidates.
  • Review portfolios and past work to assess skills.
  • Conduct interviews to evaluate technical abilities and cultural fit.

Take your time to select a freelancer who not only has the technical skills but also aligns with your project vision.

Hiring a freelance Kotlin Developer and working with an agency each have distinct advantages:

  • Freelance Developer: Offers flexibility, potentially lower costs, and direct communication.
  • Agency: Provides a team of experts, project management support, and often a more structured approach.

Your choice should depend on your project needs, budget, and preference for collaboration style. Freelancers can be ideal for smaller projects, while agencies may suit larger, more complex endeavors.

A well-crafted project brief is crucial for attracting the right Kotlin Developer. Include the following elements:

  • Project overview and objectives.
  • Specific skills and technologies required (e.g., Kotlin, Android SDK).
  • Details about the team structure and collaboration style.
  • Project timeline and milestones.
  • Budget and payment terms.

Providing clear expectations helps ensure you find a developer who meets your project needs effectively.

Hiring on Twine is simple.

  1. Post a job with your project details, timeline, and budget.
  2. Browse portfolios of vetted Developers and invite those who match your needs.
  3. Receive proposals and compare experience, pricing, and reviews.
  4. Communicate expectations, set milestones, and finalize the hire.
  5. Securely pay through Twine, ensuring protection for both parties. Twine connects you with top freelance Developers, making it easy to find the perfect creative professional for your project.

Ready to hire your next Developer?

Post your project and meet your expert within 24 hours. Over 45,000+ high growth companies that trust Twine.

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