• Position Title: Lead React Native Developer
• Division: Software Development
• Location: Vietnam
• Employment Type: Full-Time, Permanent
• Reports To: Director (R&D) or Senior Manager (Software Development)
• Seniority Level: Staff / Team Lead
About BRT Systems
BRT Systems Pte Ltd is a Singapore-based technology company specialising in smart building and home automation solutions. Our flagship platform, PanL Smart Living (PSL), powers a growing suite of Intelligent Building Management System (iBMS) products covering Lighting Management, Space Management, Restroom Management, Air Quality Management, and Digital Twin visualisation. Our mobile applications are a critical customer touchpoint — putting building intelligence directly into the hands of facility managers, occupants, and operations teams on both iOS and Android.
We are looking for a seasoned Lead React Native Developer to take full ownership of BRT's mobile engineering function. This is a leadership-plus-hands-on role with three interconnected mandates.
1. New iBMS Mobile Products
- Architect and develop new React Native iOS and Android applications for the full suite of iBMS products — from initial discovery and UI/UX collaboration through to App Store and Play Store submission and post-release operations.
2. Legacy App Migration
- Lead the systematic conversion of BRT's existing native iOS (Swift/Objective-C) and Android (Kotlin/Java) applications to a unified React Native codebase, preserving feature parity, design fidelity, and platform-specific user experience expectations.
3. Team Enablement & Mentorship
- Mentor and upskill a team of native iOS and Android developers, guiding their professional transition to React Native development through structured learning pathways, pair programming, code reviews, and internal knowledge-sharing sessions.
Required Qualifications & Experience
- React Native & JavaScript Ecosystem
- Minimum 6 years of mobile development experience, with at least 4 years dedicated to React Native in production environments. Minimum 2 years of formal team lead or staff engineer experience with direct mentoring responsibility for mid-senior engineers.
- Demonstrable experience leading a team through a significant technology transition (platform migration, framework adoption, or language re-platforming).
- Expert-level proficiency in TypeScript; strong understanding of JavaScript runtime behaviour, event loop, and async patterns.
- Deep knowledge of React Native internals, proven experience with state management, mastery of React Navigation and complex nested navigation architectures.
- Proficiency with react-native-cli, managed and bare workflows; ability to evaluate trade-offs and choose appropriately per project.
- Solid understanding of native iOS development (Swift, Objective-C, UIKit, SwiftUI) sufficient to author and debug React Native native modules and bridges.
- Solid understanding of native Android development (Kotlin, Java, Jetpack) sufficient to author and debug React Native native modules and bridges.
- Ability to read and navigate existing native codebases for accurate migration planning and risk assessment.
- Demonstrated track record of publishing multiple mobile applications to the Apple App Store and Google Play Store — Include links or names of published apps in your application.
- Experience writing and maintaining Jest unit tests, React Native Testing Library integration tests, and Detox E2E tests.
- Strong written and verbal communication skills in English; ability to produce clear technical documentation, ADRs, and onboarding guides.
- Familiarity with building management, facility management, or smart building domain applications is a plus. Prior experience in a SaaS product company, especially multi-tenant mobile application contexts is also a plus.
Core Competencies
- Technical Strengths
- Cross-platform architectural thinking
- Performance-first development mindset
- Strong debugging and root-cause analysis skills
- Security-aware: token storage, certificate pinning, data encryption at rest
- Systematic approach to code quality and testing
- Up-to-date with React Native New Architecture evolution
- Leadership & People
- Patient and structured mentoring style
- Leads by example — maintains hands-on coding contributions
- Clear communicator across engineering, product, and design
- Creates psychological safety for junior developers to learn and fail fast
- Drives accountability through enablement, not micromanagement
- Gives and receives constructive feedback effectively
What We Offer
- A high-impact, highly visible role: you will lead BRT's mobile engineering transition to React Native.
- Greenfield opportunity: the majority of iBMS mobile applications are new products — you shape architecture and user experience from day one.
- A meaningful mentorship mission: lead a talented native development team through a well-supported transition, not a rushed rewrite.
- Direct collaboration with cloud architects, IoT engineers, and product leadership — a technically rich, cross-disciplinary environment.
What to Include in Your Application
- Please include:
- Links to or names of mobile applications you have personally published on the App Store and/or Google Play Store.
- A brief description (3–5 sentences) of a native-to-React Native migration or team transition you have led.
- Your GitHub profile or code portfolio if available.