Sr Full Stack Engineer

Mammoth-AI; Lahore; On-site; PKR 3,000,000 - 5,000,000; Full time

Job summary

Mammoth-AI is seeking a skilled Full-Stack Engineer to work across frontend, backend, databases, cloud, and integrations. You will build scalable, reliable applications using React, Next.js, TypeScript, Node.js, and cloud services.

The role covers real-time features with Socket.io, REST APIs, and mobile app work with React Native. Ideal candidates have 3+ years of experience and strong problem-solving and collaboration skills.

Qualifications

• 3+ years of professional software development experience.
• Strong hands-on with TypeScript, React.js, Next.js, and Node.js.
• Experience building and integrating REST APIs and third-party services.
• Solid understanding of SQL, PostgreSQL, MongoDB, and Redis.
• Practical experience with AWS, Docker, and CI/CD pipelines.
• Experience with mobile app development using React Native is a strong plus.
• Strong problem-solving, debugging, communication, and collaboration skills.

Responsibilities

• Design, develop, and maintain scalable full-stack applications.
• Build responsive and high-quality web apps using React.js, Next.js, and TypeScript.
• Develop and maintain backend services and RESTful APIs using Node.js and Express.js.
• Design and optimize database schemas and queries across PostgreSQL and MongoDB.
• Implement real-time features using Socket.io and event-driven technologies.
• Develop and maintain React Native mobile applications for iOS and Android.
• Integrate third-party services and APIs, including Stripe, Azure AD, Google Maps, and SP-API.
• Deploy and maintain applications using AWS, Docker, and CI/CD pipelines.
• Troubleshoot production issues and improve performance, reliability, and scalability.
• Participate in system design discussions, code reviews, and Agile processes.
• Collaborate with product, QA, and other engineering teams to deliver high-quality solutions.

Skills

System Design

Software Architecture

Performance Optimization

Debugging

Scalable Development

Technical Leadership

Agile Methodologies

Collaboration

Tools

React.js

Next.js

TypeScript

JavaScript (ES6+)

Redux Toolkit

TanStack Query

HTML5

CSS3

Tailwind CSS

React Native

Expo

Node.js

Express.js

RESTful APIs

Socket.io

JWT/OAuth

MongoDB

PostgreSQL

SQL

Redis

Upstash Redis

AWS

Docker

GitHub Actions

CI/CD

Firebase

Stripe

Azure AD

Google Maps API

SP-API

Job description

Job Description

We are looking for a skilled Full-Stack Engineer with strong experience in modern web and mobile technologies. The ideal candidate should be comfortable working across frontend, backend, databases, cloud infrastructure, and third-party integrations, with a strong focus on building scalable, reliable, and maintainable applications.

Technical Skills

Frontend

• React.js
• Next.js
• TypeScript
• JavaScript (ES6+)
• Redux Toolkit
• TanStack Query
• HTML5 / CSS3
• Tailwind CSS

Mobile Development (We need to add if required)

• React Native
• Expo
• iOS development, including MapKit and APNs
• Android development, including Google Maps and FCM

Backend Development

• Node.js
• Express.js
• RESTful API development
• Socket.io / real-time communication
• Authentication and authorization
• API design and third-party API integration

Databases & Caching

• MongoDB
• PostgreSQL
• SQL
• Redis
• Upstash Redis

Cloud & DevOps

• AWS, including EC2, Lightsail, S3, CloudWatch, Parameter Store, and Elastic Beanstalk
• Docker
• GitHub Actions and CI/CD
• Firebase

Third-Party Integrations

• Stripe
• Azure AD (OAuth/SSO)
• Amazon Selling Partner API (SP-API)
• Google Maps API

Core Engineering Skills

• System Design
• Software Architecture
• Performance Optimization
• Debugging and Troubleshooting
• Scalable Application Development
• Technical Leadership
• Agile Software Development

Key Responsibilities

• Design, develop, and maintain scalable full-stack applications.
• Build responsive and high-quality web applications using React.js, Next.js, and TypeScript.
• Develop and maintain backend services and RESTful APIs using Node.js and Express.js.
• Design and optimize database schemas and queries across PostgreSQL and MongoDB.
• Implement real-time features using Socket.io and other event-driven technologies.
• Develop and maintain React Native mobile applications for iOS and Android.
• Integrate third-party services and APIs, including Stripe, Azure AD, Google Maps, and Amazon SP-API.
• Deploy and maintain applications using AWS, Docker, and CI/CD pipelines.
• Troubleshoot production issues and improve application performance, reliability, and scalability.
• Participate in system design, technical discussions, code reviews, and Agile development processes.
• Collaborate with product, QA, and other engineering teams to deliver high-quality solutions.

Preferred Experience

• 3+ years of professional software development experience.
• Strong hands-on experience with TypeScript, React.js, Next.js, and Node.js.
• Experience building and integrating REST APIs and third-party services.
• Solid understanding of SQL, PostgreSQL, MongoDB, and Redis.
• Practical experience with AWS, Docker, and CI/CD pipelines.
• Experience with mobile application development using React Native is a strong plus.
• Strong problem-solving, debugging, communication, and collaboration skills.

Requirements