Senior React Native Engineer REQ_141

3Pillar; Kolkata District; Remote; INR 2,000,000 - 3,200,000; Full time

Benefits offered by this job

Remote-friendly

Wellbeing program

Global team learning

Job summary

3Pillar Global is seeking an experienced React Native engineer to migrate to TypeScript, architect new features, and optimize offline-first mobile experiences. You will work with Redux, Expo, and GraphQL to deliver a world-class mobile app for iOS and Android.

The role involves mentoring juniors, code reviews, and staying current with RN/Expo trends while collaborating with global teams in a remote-first environment.

Qualifications

• 5+ years of React Native experience with functional components, hooks, and performance optimization.
• Write native iOS/Android modules integrated with React Native (Swift/Obj-C, Kotlin/Java).
• 5+ years TypeScript experience and deep Expo familiarity.
• Experience with Redux (including RTK), middleware, and state management.

Responsibilities

• Facilitate communication with client stakeholders on project status and recommendations.
• Lead migration of legacy JavaScript to TypeScript with quality and maintainability.
• Architect and develop features for React Native app with modern practices.
• Optimize offline-first functionality using local databases and caching.
• Collaborate with backend, design, and product teams to deliver a top mobile experience.
• Conduct code reviews and mentor junior engineers on the team.
• Stay updated on React Native, TypeScript, Expo and mobile dev trends.

Skills

React Native

TypeScript

Expo

Redux/RTK

GraphQL

Native iOS/Android modules

English proficiency

Tools

Expo DevClient

Apollo Client

GitHub Actions

Job description

3Pillar Global is an AI transformation partner helping enterprises build AI-native products and intelligent agents that define the next era of business. With teams across North America, Europe, Latin America, and Asia, we work with ambitious companies across financial services, healthcare, media, and technology. Our HelixAI platform and Helix Pods delivery model enable engineers to work at the center of enterprise AI transformation, building solutions that are open, portable, scalable, and built to last.

Key Responsibilities

• Facilitate effective communication with client project stakeholders regarding project status and recommendations.
• Lead the migration of legacy JavaScript code to TypeScript, ensuring high-quality, maintainable code.
• Architect and develop new features for our React Native application using modern best practices.
• Optimize the app for offline-first functionality by leveraging local databases and caching strategies.
• Work with Redux for state management and ensure seamless integration with existing architecture.
• Utilize Expo to streamline development workflows and manage app deployment.
• Design and implement efficient GraphQL queries and mutations for data fetching.
• Collaborate with cross-functional teams (backend engineers, designers, product managers) to deliver a world-class mobile experience.
• Conduct thorough code reviews and mentor junior engineers on the team.
• Stay up-to-date with the latest trends in React Native, TypeScript, Expo and mobile development.

Minimum Qualifications

• Strong React Native - minimum 5 years of experience (Functional Components, Hooks, Advanced State Management, Memorization and Performance Optimizations) - Develop and optimize React Native applications for both iOS and Android in a production environment
• Write native iOS (Swift/Objective-C) and Android (Kotlin/Java) modules integrated with React Native
• Strong TypeScript - minimum 5 years of experience
• Expo - minimum 3+ years of experience working with latest Expo and Expo DevClient (NOT EXPO GO)
• Expo SDK experience (including Expo notifications, Expo Camera, Expo Updates)
• Expo EAS experience including (Ci/CD with EAS Workflows and GitHub Actions) - Deep understanding of Expo branches and Expo release channels.
• Expertise in state management libraries like Redux (including middleware such as Redux Thunk or Redux Saga) + RTK Toolkit.
• Solid understanding of mobile app performance optimization techniques.
• Exceptional problem-solving skills with a focus on delivering clean, maintainable code.
• Strong communication skills and ability to work collaboratively in a team environment.
• English proficiency

Additional Experience Desired:

• Strong understanding of local databases (e.g., SQLite, Realm) and offline-first mobile app strategies.
• Proficiency in working with GraphQL APIs (e.g., Apollo Client or Relay).

What is it like working for 3Pillar Global?

At 3Pillar, We Offer a World Of Opportunity

• Imagine a flexible work environment - whether it's the office, your home, or a blend of both. From interviews to onboarding, we embody a remote-first approach.
• You will be part of a global team, learning from top talent around the world and across cultures, speaking English everyday. Our global workforce enables our team to leverage global resources to accomplish our work in efficient and effective teams.
• We're big on your well-being - as a company, we spend a whole trimester in our annual cycle focused on wellbeing. Whether it is taking advantage of fitness offerings, mental health plans (country-dependent), or simply leveraging generous time off, we want all of our team members operating at their best.
• Our professional services model enables us to accelerate career growth and development opportunities - across projects, offerings, and industries.
• We are an equal opportunity employer. It goes without saying that we live by values like Intrinsic Dignity and Open Collaboration to create cutting-edge technology AND reinforce our commitment to diversity - globally and locally.