Lead Full Stack / React Native Developer, Islamabad | Onsite

Deventrix; Islamabad; On-site; PKR 16,620,000 - 24,931,000; Full time

Job summary

Deventrix in Islamabad seeks an experienced Lead/Senior Full Stack/React Native Developer to build scalable mobile apps with React Native and backend services with Node.js and FastAPI. You will design MongoDB schemas, implement REST APIs, and ensure high performance across mobile and server components.

The role requires 7+ years of software development expertise, deep React Native proficiency, and strong full-stack capabilities including Node.js, FastAPI, and MongoDB.

Qualifications

• 7+ years of professional software development experience.
• Strong hands-on experience with React Native.
• Backend development using Node.js and FastAPI.
• MongoDB and Firestore experience with queries and schemas.
• REST API development and integration.
• Authentication/authorization (JWT, OAuth, Firebase Auth).
• Android and iOS deployment experience.
• Bachelor’s degree in Computer Science, Software Engineering, IT, or related field.

Responsibilities

• Develop, maintain, and optimize mobile apps using React Native.
• Build scalable, reusable mobile components.
• Develop backend APIs with Node.js and FastAPI.
• Design and optimize MongoDB databases and schemas.
• Integrate REST APIs and third-party services.
• Manage app state with Redux Toolkit, Zustand, or Context API.
• Troubleshoot across mobile, backend, and database layers.
• Support Android and iOS build/deploy processes.
• Participate in Agile/Scrum development.

Skills

React Native

JavaScript

TypeScript

React.js

Node.js

FastAPI

Education

Bachelor's degree in Computer Science

Tools

MongoDB

Firestore

Git

Postman

Jira

VS Code

Job description

Deventrix are urgently seeking an experienced Lead / Senior Full Stack / React Native Developer to join our team in Islamabad. You will build scalable mobile applications with React Native, develop backend services with Node.js and FastAPI, and manage MongoDB databases.

Key Responsibilities

• Develop, maintain, and optimize mobile applications using React Native
• Build scalable, reusable mobile application components
• Develop backend APIs and services using Node.js and FastAPI
• Design, manage, and optimize MongoDB databases, including queries, aggregation pipelines, indexing, and schema design
• Integrate REST APIs and third-party services
• Manage application state using Redux Toolkit, Zustand, Context API, or similar solutions
• Troubleshoot and resolve issues across mobile, backend, and database layers
• Optimize application performance, loading speed, and user experience
• Participate in code reviews and maintain clean, scalable, maintainable code
• Support Android and iOS build and deployment processes
• Follow Agile/Scrum development methodologies

Requirements

• 7+ years of professional software development experience
• Strong hands-on experience with React Native
• Strong proficiency in JavaScript and TypeScript
• Experience with React.js, Hooks, Component Lifecycle, and state management
• Backend development experience using Node.js and FastAPI
• Strong experience with MongoDB and Firestore
• REST API development and integration
• Authentication and authorization (JWT, OAuth, Firebase Auth)
• Git and version control workflows
• Android and iOS deployment experience
• Mobile application performance optimization
• Strong debugging and problem-solving skills
• Bachelor’s degree in Computer Science, Software Engineering, IT, or a related field (equivalent practical experience may be considered)
• Ability to take ownership and deliver high-quality solutions

Skills

Technical Skills

• Mobile: React Native
• Frontend: React.js, JavaScript, TypeScript
• Backend: Node.js, Express.js, FastAPI
• Database: MongoDB, Firestore
• APIs: REST APIs and third-party integrations
• Tools: Git, Postman, Jira/Trello, VS Code
• Deployment: Google Play Store, Apple App Store, cloud/VPS

Soft Skills

• Ownership and delivery of high-quality solutions
• Debugging and problem-solving
• Teamwork in Agile/Scrum environments

Nice to Have

• Firebase (FCM, Analytics, Crashlytics, Remote Config)
• WebSockets, http://Socket.IO , Pusher, or other real-time communication
• AWS, Azure, Google Cloud, or DigitalOcean
• CI/CD pipeline implementation
• Payment gateway integrations
• Push notifications, maps, analytics, and social login integrations
• Automated testing and application security best practices