Hire in days, not months

Hire Kotlin Developers

Ship Android and backend Kotlin features with senior engineers who reduce rework and delivery time.

From Jetpack Compose UI to Ktor microservices and Kotlin Multiplatform shared logic, our Kotlin developers help you launch faster with AI-assisted delivery aligned to your requirements. Cost efficiency through selective AI acceleration keeps quality high at a predictable rate.

Get Matched with Kotlin Talent

Kotlin delivery governance

Governance built for stable and secure Kotlin releases

Reduce production risk with explicit release controls, security standards, and performance monitoring tailored to Kotlin mobile and backend delivery.

Controls teams ask for before launch

Security, stability, and release discipline mapped to how modern Kotlin stacks actually ship.

Shortlist turnaround

3.9 days median across recent Kotlin roles

Kickoff speed

9 days median from selection to sprint start

90-day continuity

94% of engagements active after month three

Secure SDLC for Kotlin delivery

NDA-backed onboarding, least-privilege access, and environment controls for production-facing Kotlin work.

Security-ready

Clear IP ownership and contracts

Contract structure protects source code ownership, confidentiality, and handoff continuity from day one.

Legal-ready

Performance-aware release review

Feature launches are reviewed against performance budgets and regression risk before promotion.

Quality-focused

Talent pool preview

Vetted Kotlin Developer profiles ready to interview

Review a balanced shortlist with specialist, senior, and principal depth so you can hire for immediate delivery and long-term technical leadership.

View more profiles

Raza U.

Senior Kotlin Developer

Vetted

8 years

Role-matched

KotlinSpring BootKtorCoroutines

Led Kotlin backend services for a B2B SaaS platform, migrating critical APIs from Java and reducing response time by 22% while improving type safety.

Hamza J.

Kotlin Developer

Vetted

6 years

Role-matched

KotlinJetpack ComposeKMPRetrofit

Built a high-conversion ecommerce Android app with Kotlin and Compose, sharing business logic via KMP and maintaining 99.8% crash-free rate.

Khurram Y.

Principal Kotlin Developer

VettedArchitect

11 years

Role-matched

System DesignKotlinSecurityCI/CD

Architected a regulated fintech Kotlin backend with multi-team delivery, improving release frequency by 25% while maintaining audit compliance.

Need a wider shortlist?

We can share additional kotlin developer profiles by seniority, timezone, and domain fit.

Kotlin engagement options

Choose the engagement model that matches your Kotlin roadmap

Start with focused Kotlin work or scale to a full pod as your product complexity grows across mobile and backend.

Model selection support

We map Kotlin role shape to roadmap pressure, platform mix, and stakeholder expectations.

Part-time Kotlin support

Best for iterative feature work, bug fixes, and ongoing maintenance.

Starts from $2,000 / month

Best for: Steady improvements without full-time bandwidth

20-25 hrs/week
Kotlin sprint support
Weekly planning + reporting

Dedicated QA and large-scale migrations are scoped separately.

Get Started

Full-time Kotlin engineer

Recommended

Best for high-priority Kotlin delivery with daily ownership and momentum.

Starts from $4,000 / month ($25/hour)

Best for: Core product teams with active Kotlin roadmap goals

40 hrs/week
Sprint ownership
Daily delivery updates

Third-party licensing and platform costs are billed separately.

Get Started

Kotlin engineering pod (2 Kotlin Devs + 1 QA + 1 part-time PM)

Best for parallel workstreams, launch windows, and cross-functional execution.

Starts from $12,000 / month

Best for: Complex initiatives with delivery and coordination pressure

Cross-functional pod
Parallel sprint execution
Release orchestration support

Specialized compliance/security audits are scoped separately.

Get Started

Kotlin hiring process

From architecture fit to sprint contribution in under two weeks

The process is tuned for Kotlin delivery risk: architecture fit, coroutine patterns, test coverage, and launch readiness.

Typical kickoff window

Most teams start Kotlin delivery with selected talent in 7-14 days.

Decision points are explicit: Kotlin implementation depth, architecture fit, release reliability, and communication quality are validated before kickoff.

1
Scope alignment and delivery priorities
Step 1
We map product priorities, Kotlin stack (Android, backend, KMP), and performance expectations to define role scope and success criteria.
Day 1-2
2
Shortlist with relevant Kotlin project context
Step 2
Review role-matched candidates with prior exposure to similar architecture, platform mix, and collaboration model.
Day 2-5
3
Technical validation with Kotlin scenarios
Step 3
Interviews test coroutine usage, architecture decisions, and release-quality tradeoff handling in realistic scenarios.
Day 5-10
4
Onboarding and sprint-ready integration
Step 4
Selected engineers join your workflows with clear ownership boundaries and immediate first-sprint goals.
Day 7-14

Why product teams hire us for Kotlin

Kotlin execution tuned for speed, quality, and cross-platform reliability

You get engineers who can build production-grade Kotlin apps and services without the overhead of a traditional mobile or backend team.

Built for high-stakes Kotlin delivery

Designed for teams shipping Android apps, backend services, and shared logic across platforms.

Typical start

9 days median to sprint kickoff

Cost impact

30-40% lower vs local FTE

Release cadence

25% increase in monthly production releases

Fast ramp on Kotlin codebases

Engineers integrate into your architecture, coroutine patterns, and release flow quickly.

Velocity

Focus on type safety and stability

Engineers leverage Kotlin's null safety and structured concurrency to reduce runtime errors.

Reliability

Cross-platform Kotlin expertise

Delivery decisions account for Android, backend, and KMP tradeoffs based on product needs.

Versatility

Service scope

Kotlin use cases mapped to business outcomes, not just code

Use this service scope to match your roadmap to the right Kotlin pattern, whether you need mobile features, backend services, or shared logic across platforms.

Mobile and Android Delivery

Native Android apps with Kotlin and Jetpack Compose

Our Kotlin developers build high-performance Android apps using Kotlin-first patterns, Jetpack Compose for modern UI, and Coroutines for responsive background work.

Java to Kotlin migration for Android

Hire Kotlin engineers to modernize legacy Android codebases, improving null safety, reducing boilerplate, and cutting crash rates through Kotlin's concise syntax.

Kotlin Multiplatform shared business logic

Implement shared Kotlin code across Android and iOS with KMP, reducing duplication and speeding feature parity while keeping platform-specific UI native.

Backend and Server-Side Kotlin

Ktor and Spring Boot Kotlin services

Build lightweight APIs and microservices with Ktor or Spring Boot in Kotlin for B2B SaaS, fintech, and internal tooling with fast iteration cycles.

Data pipelines and workflow automation

Hire Kotlin developers to create data processing jobs, ETL scripts, and automation tools using Kotlin's expressive syntax and coroutine-based concurrency.

Gradle build logic and plugin development

Customize build pipelines with Kotlin DSL for Gradle, improving build speed and maintainability across multi-module Android or JVM projects.

Product and Scale

SaaS and ecommerce backend services

Get Kotlin-powered APIs for product catalogs, user management, and payment flows with type-safe contracts and reliable async handling.

Fintech and regulated product features

Implement secure, auditable Kotlin services for transaction processing, compliance workflows, and data encryption with clear ownership boundaries.

Performance and stability optimization

Optimize Kotlin applications for memory, startup time, and throughput using profiling tools and coroutine best practices to meet production SLAs.

Engineering stack

Production-ready Kotlin stack for mobile, backend, and shared logic

Stack choices are optimized for null safety, coroutine-based concurrency, and long-term maintainability across Android, server, and multiplatform products.

Kotlin

Kotlin Coroutines

Kotlin Flow

JVM

Jetpack Compose

Room

Retrofit

Hilt

Ktor

Spring Boot (Kotlin)

Exposed

Kotlin Multiplatform

Gradle Kotlin DSL

SQLDelight

JUnit

Mockito

GitHub Actions

Hiring readiness

Kotlin hiring playbook: evaluate quickly and onboard with less risk

Use this decision hub to align Kotlin interview depth, set ownership boundaries, and connect hiring decisions to measurable delivery outcomes.

Role scope Interview playbook Business impact

Responsibilities / Role Scope

Owns

Kotlin feature implementation with production-quality code standards
Coroutine and Flow usage for async and reactive flows
Release-ready pull requests with test coverage and clear change notes
Architecture decisions for Kotlin modules across mobile and backend

Collaborates on

Product teams to define roadmap and Kotlin feasibility
Designers and platform engineers for API contracts and UX alignment
DevOps for build pipelines and deployment automation
QA for test strategy and regression prevention

Interview Questions

Structured by level for consistent and faster interviewer calibration.

junior

Fundamentals and execution reliability

What is the difference between `val` and `var` in Kotlin?
What are Kotlin coroutines and when would you use them?
How does null safety work in Kotlin?
What is a Kotlin `data class` and when is it useful?

mid

Delivery ownership and decision quality

How do you handle cancellation and structured concurrency in Coroutines?
What are the benefits of Kotlin Flow over LiveData or RxJava?
How do you implement dependency injection with Hilt in a Kotlin Android app?
How do you structure a multi-module Kotlin project for maintainability?
How would you migrate a Java class to Kotlin while preserving behavior?

senior

Architecture, risk control, and leadership

How do you architect a Kotlin Multiplatform project for shared logic and platform-specific UI?
How do you design a Ktor or Spring Boot Kotlin service for high throughput and low latency?
How do you approach a large-scale Java to Kotlin migration with minimal risk?
How do you define performance budgets for Kotlin Android or backend services?
How would you implement offline-first data sync using Kotlin and Coroutines?

Why Outsource This Role

Faster Kotlin delivery

Ship Kotlin features without the overhead of local hiring or platform-specific training.

Median kickoff: 9 days from role approval

Best-rate positioning with quality controls

Scale Kotlin engineering bandwidth at a predictable rate with AI-assisted delivery aligned to your requirements.

Starts from $25/hour for Kotlin engineering

Cost efficiency through selective AI acceleration

Reduce delivery effort and improve speed with AI-leveraged tooling while maintaining code quality and review standards.

30-40% lower cost vs equivalent local FTE teams

Lower delivery risk

Use Kotlin's null safety, structured concurrency, and testing discipline to reduce regressions in production.

Regression ticket rate reduced 28% quarter-over-quarter

Scalable Kotlin teams

Start with one Kotlin developer and expand to a full pod as product complexity grows across mobile and backend.

Pod scale-up window: 2-3 weeks

Benefit	Outcome	Metric
Faster Kotlin delivery	Ship Kotlin features without the overhead of local hiring or platform-specific training.	Median kickoff: 9 days from role approval
Best-rate positioning with quality controls	Scale Kotlin engineering bandwidth at a predictable rate with AI-assisted delivery aligned to your requirements.	Starts from $25/hour for Kotlin engineering
Cost efficiency through selective AI acceleration	Reduce delivery effort and improve speed with AI-leveraged tooling while maintaining code quality and review standards.	30-40% lower cost vs equivalent local FTE teams
Lower delivery risk	Use Kotlin's null safety, structured concurrency, and testing discipline to reduce regressions in production.	Regression ticket rate reduced 28% quarter-over-quarter
Scalable Kotlin teams	Start with one Kotlin developer and expand to a full pod as product complexity grows across mobile and backend.	Pod scale-up window: 2-3 weeks

Testimonials

Client feedback from delivery partnerships across product teams.

“The Kotlin developer integrated in the first sprint and helped us migrate our Android app to Jetpack Compose ahead of schedule with zero critical regressions.”

David L.

Head of Mobile, B2B SaaS company

“We built our fintech backend in Kotlin with Ktor and reduced API latency by 20% while improving type safety across the team.”

Maria K.

CTO, Fintech startup

“Cost efficiency through AI-assisted delivery and Kotlin expertise helped us ship our ecommerce Android app 30% faster than planned.”

James T.

Engineering Manager, Ecommerce brand

FAQ

Answers to practical decision questions before you hire.

How quickly can a Kotlin developer start?

Most Kotlin projects begin onboarding within 7-14 days after role alignment and interview completion.

Do you work with both Android and backend Kotlin?

Yes. We specialize in Kotlin across Android (Jetpack Compose, Coroutines), backend (Ktor, Spring Boot), and Kotlin Multiplatform for shared logic.

Can you help with Java to Kotlin migrations?

Yes. We support phased migrations to Kotlin, improving null safety and maintainability while keeping the application stable.

Do you use AI in Kotlin delivery?

Yes. We leverage AI-assisted delivery aligned to customer requirements for faster turnaround and cost efficiency while maintaining quality controls.

What is the hourly rate for Kotlin developers?

Our Kotlin engineering services start at $25/hour, providing high-quality delivery at a competitive rate.