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HIRE KOTLIN DEVELOPER

Senior Kotlin engineer shipping production Android apps and cross-platform modules with KMP. Available for native Android delivery, shared business logic, and backend Kotlin — remote, worldwide.

Last updated: May 2026

I work seamlessly with Toronto and EST timezone teams. Proven track record with clients across Canada and globally.

Also available for on-site collaboration in nearby cities: Mississauga, Waterloo, Hamilton.

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Available in TorontoEST timezone overlap
01

Why hire me

Production Android delivery

Shipped production Android apps using Kotlin, Jetpack Compose, and modern architecture components. Deep expertise in coroutines, Flow, Room, and Hilt for building maintainable Android codebases.

Kotlin Multiplatform

Shared business logic between Android and iOS using Kotlin Multiplatform and Compose Multiplatform. Reduce duplication while keeping platform-specific UIs native and performant.

Remote-native collaboration

Structured daily standups, async updates via Slack/Linear, and weekly video check-ins when needed. Based in Japan, collaborating with teams across APAC, EU, and US.

Full-stack mobile capability

Beyond Android — KMP shared modules, Next.js web companions, Firebase/Supabase backends, RevenueCat subscriptions, and ASO/SEO growth strategy. One partner for your entire product.

02

What you get

  • Fractional Android lead — architecture, code review, and sprint planning
  • Native Android (Kotlin) with MVVM, Redux/MVI, Dagger/Hilt, and multi-module structure
  • Cross-platform delivery with Flutter or Kotlin Multiplatform
  • Production diagnostics — crash/ANR analysis, memory profiling, and device-specific fixes
  • CI/CD setup (Bitrise, GitHub Actions) and release pipeline automation
03

How it works

Discovery

Stakeholder interviews to align on product vision, followed by a deep codebase audit covering architecture, test coverage, and build times. I then recommend platform selection — native Android, Flutter, or Kotlin Multiplatform — based on your timeline, existing team shape, performance requirements, and long-term maintenance capacity.

Architecture

Design of modular project structure, dependency injection strategy using Dagger or Hilt, state management patterns such as MVVM or MVI, and API contract design with strong typing. All major decisions are documented in an Architecture Decision Record to preserve context for future team members.

Development

Sprint-based delivery with structured PR templates, mandatory code review, and weekly demo sessions. Native modules are used for platform-specific capabilities like camera or Bluetooth, while shared UI and business logic layers eliminate duplication across iOS and Android.

QA & Release

Comprehensive automated testing including unit tests, integration tests, and screenshot testing to prevent visual regressions. CI/CD pipelines on Bitrise or GitHub Actions manage staging builds, staged rollouts, and automated crash monitoring integration for production confidence.

Growth

Post-launch ASO metadata optimization, store asset preparation including screenshots and preview videos, analytics instrumentation with Firebase or Amplitude, and a dedicated support window to stabilize crash rates and user retention metrics.

04

Recent delivery

Deckbase

Learn with decks, FSRS spaced repetition, rich templates, and AI-assisted card creation.

Case study

LoA

Mindful app usage: pause before distracting apps with intention, gratitude, and affirmations.

Case study

TaskGate

Break impulsive opens: complete a micro-task before accessing blocked apps.

Case study

EverJournal

AI-powered storytelling for your life — reflect and remember what matters.

Case study
05

Engagement

Fractional Lead

2–3 days per week embedded with your team. Ideal for ongoing roadmap delivery, architecture decisions, and mentoring while you scale.

Project-Based Delivery

Fixed-scope sprints (4–8 weeks) with clear milestones. Best for MVPs, feature launches, and greenfield builds.

Advisory Retainer

Architecture review, code audits, and technical strategy on a monthly basis. Perfect for teams that need senior oversight without full-time commitment.

Pricing reflects Toronto and North America market rates. Real-time collaboration in EST timezone.

05

Trust

8+

Years experience

4+

Apps shipped

24h

Response time

1 week

Paid trial

Trusted at

Rakuten
U.S. Bank
06

FAQ

Why should I hire you as a Kotlin developer?

I have shipped production Android apps using Kotlin, Jetpack Compose, and modern architecture components. Expertise in coroutines, Flow, Room, Hilt, and Kotlin Multiplatform for shared business logic.

Do you work remotely with international teams?

Yes. I work remote-native, timezone-flexible, and async-first. Based in Japan, I collaborate with teams across APAC, EU, and US through structured standups and Slack/Linear updates.

What engagement models do you offer?

Fractional mobile lead (2-3 days/week), project-based delivery (4-8 week sprints), and advisory retainers for architecture review and code audits. All engagements start with a one-week paid trial.

Can you handle cross-platform delivery beyond Android?

Yes. In addition to native Android and Kotlin development, I deliver cross-platform shared modules with Kotlin Multiplatform, Next.js web companions, Firebase/Supabase backends, and ASO/SEO growth strategy.

What are your typical rates?

Fractional lead roles start at $8,000/month for 2-3 days/week. Project-based delivery is scoped per sprint (typically $12,000–$24,000 for a 6-8 week engagement). Advisory retainers for architecture review and code audits start at $3,000/month. All engagements begin with a one-week paid trial.

How soon can you start?

Typically within 1–2 weeks of contract signature. I keep a limited client roster to ensure deep focus, so availability depends on current sprint commitments. The fastest path is booking a call to discuss scope and timeline.

Can you work in Toronto's timezone?

Yes, I fully support meetings and real-time collaboration in the EST timezone. Also available in nearby cities including Mississauga, Waterloo, Hamilton. I also use async communication for maximum flexibility.

Are your rates aligned with Toronto market rates?

My rates reflect Toronto and North America market standards while maintaining global flexibility. Monthly retainers, hourly, and project-based engagements are all available.

07

Contact

Ready to hire?

Tell me about your Kotlin project, timeline, and team. I reply within 24 hours.

Hire Kotlin Developer in Toronto — Remote & Worldwide | Code Your Reality | Code Your Reality