Lead / Senior Full Stack React Native Developer

About the role

Aimark Labs is hiring an experienced Full Stack React Native developer for its team in Islamabad on an onsite basis. The role covers building scalable mobile apps with React Native, backend services with Node.js and FastAPI, and MongoDB databases. The position is full-time, Monday to Friday, 8:00am to 5:00pm, and requires 7+ years of professional software development experience.

Key responsibilities

• Develop, maintain and optimise mobile applications using React Native, building scalable and reusable components.
• Develop backend APIs and services with Node.js and FastAPI.
• Design, manage and optimise MongoDB databases, including queries, aggregation pipelines, indexing and schema design.
• Integrate REST APIs and third-party services.
• Manage application state with Redux, Redux Toolkit, Zustand, Context API or similar.
• Troubleshoot issues across mobile, backend and database layers and optimise performance and loading speed.
• Take part in code reviews and support Android and iOS build and deployment.
• Follow Agile/Scrum development methodologies.

Required profile

• 7+ years of professional software development experience.
• Bachelor's degree in Computer Science, Software Engineering, IT or a related field; equivalent practical experience may also be considered.
• Strong communication and teamwork skills, ability to take ownership and deliver quality solutions.
• Comfortable working in an onsite office environment.

Required skills

• React Native, JavaScript and TypeScript; React.js, hooks, component lifecycle and state management.
• Node.js, Express.js and FastAPI.
• MongoDB and Firestore; REST API development and integration.
• Authentication and authorisation (JWT, OAuth, Firebase Auth).
• Git and version control; Android and iOS deployment.
• Performance optimisation and debugging.
• Preferred: Firebase (FCM, Analytics, Crashlytics, Remote Config), WebSockets, Socket.IO, Pusher, AWS/Azure/Google Cloud/DigitalOcean, CI/CD pipelines, payment gateways, push notifications, maps, analytics and social login, automated testing and security best practices.