Senior React Native Engineer (React Native & AWS)

3Pillar is an AI transformation partner on a mission to help enterprises build the AI-native products and intelligent agents that will define the next era of business. With teams across North America, Europe, Latin America, and Asia, we work with the most ambitious companies in financial services, healthcare, media, and technology — helping them move faster, modernize boldly, and compete on their own terms. Our HelixAI platform and Helix Pods delivery model put our engineers at the center of real agentic transformation — doing work that is open, portable, and built to last. We are building the future of enterprise AI.
Your role extends beyond the realm of code composition; you will architect transformative solutions that reshape entire industries. Join us and spearhead the charge toward a tech future that transcends the ordinary. 
You will be focused on the development and optimization of the application in the pharmaceutical industry, with a focus on the analysis of the current state and proposals and implementation to improve the application for both Android and iOS platforms, especially by refactoring or rewriting fully supported by AI tools

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.

Qualification:
5+ years of professional software development experience, with at least 4 years focused on React Native. Proven experience working with TypeScript 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. Very good English proficiency Additional Experience Desired: Hands-on experience with Expo for React Native application development. 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 It's Like to Work at 3Pillar:
At 3Pillar, we create an environment where people can do their best work while maintaining a healthy work-life balance. Flexibility & Well-being – Our remote-first approach gives you the flexibility to work where you perform best, while prioritizing your well-being and personal commitments. Global Community – Collaborate with talented colleagues across the globe in a culture built on connection, support, and shared success. Your Voice Matters – We foster open communication and multiple feedback channels, ensuring every employee has the opportunity to be heard and make an impact. Growth & Development – Gain exposure to diverse clients, industries, and challenges that accelerate learning and career growth. Our culture is guided by four core values: Collaboration, Outperform, Respect, and Evolve —the principles that shape how we work, grow, and succeed together.