Lead React Native Developer

• 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.