Software Developer II - Mobile

WATI.io; Hong Kong; On-site; HKD 350,000 - 520,000; Full time

Job summary

Wati is seeking a Mobile Developer with 3-5 years of professional mobile development experience to build and improve our mobile applications for iOS and Android using Flutter and Dart.

You will collaborate with Product, Design, and Backend teams to deliver intuitive experiences that drive customer engagement and business growth, while leveraging AI coding tools to support development and ensure high code quality.

Qualifications

• 3-5 years of professional mobile development experience, including delivering production applications.
• Flutter and Dart experience preferred; strong native or hybrid/cross-platform developers willing to work with Flutter.
• Solid understanding of mobile architecture, state management, API integration, and application lifecycle.
• Experience with testing, debugging, Git, and mobile release workflows.
• Comfortable using AI coding tools, with the ability to review and validate generated code and take ownership of its quality.
• Ability to own features independently, collaborate effectively, and write clean, maintainable code.

Responsibilities

• Build and maintain Wati’s mobile applications for iOS and Android using Flutter and Dart.
• Own features from technical design through testing, release, and ongoing improvement.
• Collaborate with Product, Design, and Backend teams to deliver intuitive experiences that improve customer engagement and business growth.
• Use AI coding tools to support implementation, debugging, testing, and refactoring.
• Improve application performance, reliability, and code quality through testing and code reviews.

Skills

Flutter

Dart

Mobile development

API integration

Testing

Git

AI coding tools

Tools

Cursor

Codex

Claude Code

Job description

About Wati

Started as a WhatsApp team inbox in 2020, Wati has evolved into an AI-powered customer engagement platform that goes beyond a single channel. Designed for businesses that sell, support, and grow through conversations, Wati observes customer intent in real time, decides the next best revenue action, and executes it across marketing, sales, and support - on WhatsApp, Instagram, Facebook, TikTok, SMS, and more.

Trusted by over 16,000 customers across 190+ countries, Wati simplifies complex operations and business conversations with a unified inbox, no-code automation, and our intelligent AI layer, Astra.

Proudly backed by Tiger Global, Sequoia Capital, DST Global, and Shopify, and recognised as a Premium Partner of Meta and Google.

We’re looking for a Mobile Developer with 3-5 years of experience to build and improve Wati’s mobile applications, primarily using Flutter and Dart. You will work closely with Product, Design, and Backend teams to deliver reliable, intuitive experiences across iOS and Android.

We welcome candidates with strong native or hybrid/cross-platform development experience who are willing to work primarily with Flutter. Native iOS experience and a track record of contributing to measurable business growth are strong advantages.

Our engineering team uses AI coding tools such as Cursor, Codex, and Claude Code in daily development, combining their capabilities with sound engineering judgment and ownership of code quality.

What you will do

• Build and maintain Wati’s mobile applications for iOS and Android using Flutter and Dart.

• Own features from technical design through testing, release, and ongoing improvement.

• Collaborate with Product, Design, and Backend teams to deliver intuitive experiences that improve customer engagement and business growth.

• Use AI coding tools to support implementation, debugging, testing, and refactoring.

• Improve application performance, reliability, and code quality through testing and code reviews.

• 3-5 years of professional mobile development experience, including delivering production applications.

• Flutter and Dart experience preferred; strong native or hybrid/cross-platform developers willing to work with Flutter are also welcome.

• Solid understanding of mobile architecture, state management, API integration, and application lifecycle.

• Experience with testing, debugging, Git, and mobile release workflows.

• Comfortable using AI coding tools, with the ability to review and validate generated code and take ownership of its quality.

• Ability to own features independently, collaborate effectively, and write clean, maintainable code.

Nice-to-have

• Native iOS development experience with Swift or Objective-C, especially integrating native capabilities into Flutter.
• A track record of contributing to business growth through improvements in activation, engagement, retention, or conversion.
• Experience with real-time messaging, B2B SaaS, or customer engagement products.
• Experience improving team development workflows with AI tools, reusable instructions, or automation.
• Familiarity with product analytics, experimentation, or mobile CI/CD.