4,794 Back End Developer jobs in Pakistan

Backend Developer , Express, MySQL/PostgreSQL)

Location: Lahore Cantt. (On-site)

Company: Zarea Limited

About Zarea:

Zarea Limited is Pakistan's largest and fastest-growing digital marketplace for physical commodities. We provide a seamless digital experience by offering integrated services in logistics, warehousing, trade financing, and data analytics. Our commitment to transparency and innovation makes us a leader in the industry.

Job Summary

We are hiring a skilled Backend Developer with expertise in , Express, and relational databases (MySQL/PostgreSQL). You'll play a key role in designing and developing secure, scalable APIs and backend logic for our web and mobile applications. This is an excellent opportunity to work on modern backend architectures for e-commerce and ERP platforms.

Key Responsibilities

● Design and develop secure and high-performance RESTful or GraphQL APIs.

● Create backend logic for user authentication, product/catalog management, shopping cart, orders, and other modules.

● Design and maintain normalized relational schemas in MySQL or PostgreSQL.

● Write optimized and scalable SQL queries to handle complex data relationships.

● Implement secure authentication using JWT or OAuth2.

● Apply role-based access control (RBAC) for different user roles such as Admin, Supplier, and Customer.

● Integrate and manage payment gateways such as JazzCash, EasyPaisa, Stripe.

● Build backend functionality for admin portals, supplier dashboards, reporting modules, and CRM tools.

● Ensure the application is secure from vulnerabilities like SQL Injection, XSS, CSRF, and enforce secure data handling.

● Implement API logging, monitoring, and error handling for better observability and debugging.

● Document APIs using tools like Swagger, Postman, or similar platforms.

● Integrate with third-party services (SMS, email, analytics, shipping APIs).

● Write unit and integration tests using Jest, Mocha, or equivalent.

● Collaborate closely with frontend developers, designers, QA, and product managers in an Agile/Scrum environment.

Requirements

Must-Have Skills:

● Strong experience with , , and RESTful API development

● Proficiency in SQL and relational database design (MySQL/PostgreSQL)

● Solid understanding of JWT/OAuth-based authentication

● Familiarity with API versioning, pagination, and rate limiting

● Understanding of server-side security best practices

● Proficient with Git and version control workflows

Preferred Skills:

● Experience with GraphQL APIs

● Knowledge of ORMs like Sequelize or

● Exposure to CI/CD, Docker, or cloud deployment (AWS/GCP/Azure)

● Familiarity with cron jobs, event queues, or background workers

● Basic understanding of microservices architecture and API gateways

What We Offer

● Competitive salary and performance-based increments

● Remote flexibility and hybrid work options

● A collaborative environment with learning opportunities

● Projects that impact thousands of users

Annual bonuses and company-sponsored training

Work Schedule:

Monday to Friday: 9:00 AM – 6:00 PM Saturday: 10:00 AM – 4:00 PM

Salary: Market Competitive

To Apply: Please share your CV

Location:

Onsite / Lahore, Pakistan

Company:

Bytevia Solution(SMC-Private) Limited

Employment Type: Full-time
About Bytevia Solution:

Bytevia Solution is a fast-growing software company specializing in modern mobile and web applications. We are looking for a skilled Backend Developer to join our development team and help us build robust, scalable, and secure backend systems.

Responsibilities:

• Design, develop, and maintain RESTful APIs using  and 
• Integrate third-party APIs and services (Stripe, PayPal, Twilio, Google APIs, etc.).
• Work with PostgreSQL, MySQL, MongoDB, and Redis for efficient data management and caching.
• Implement secure authentication and authorization using JWT, bcrypt, and Helmet.
• Handle file uploads and storage using Multer and AWS S3.
• Manage background jobs and scheduling tasks with Node-cron.
• Optimize API performance and scalability.
• Write clean, well-documented, and testable code using Swagger and Postman.
• Deploy and maintain applications using PM2, Nginx, Heroku, and GitHub.
• Collaborate closely with frontend and mobile teams to ensure smooth API integration.

Required Skills & Experience:Core Technologies

• ,
• RESTful API Architecture

Databases

• PostgreSQL, MySQL/SQL, MongoDB, Redis

ORM / Query Builders

• Sequelize

Security & Auth

• JWT, bcrypt, Helmet, Rate Limiter, CORS

File & Media Handling

• Multer, AWS S3

Background & Scheduling

• Node-cron

Integrations & Services

• Stripe, PayPal, Paystack, 2Checkout
• DHL Express API
• Google APIs (Maps, Auth, etc.)
• Nodemailer (Emails), Twilio (SMS/Voice)

DevOps & Deployment

• PM2, Nginx, Heroku, GitHub

Caching & Realtime

• Redis,

Documentation & Testing

• Swagger, Postman

Additional Requirements

• Strong command over Command Prompt / CLI tools.
• Experience in API performance optimization.
• Knowledge of secure deployment and version control best practices.
• Experience in projects like:
• E-commerce systems
• Directory listing platforms
• Real estate portals or agency sites

Preferred Qualifications:

• 2+ years of hands-on experience with backend development.
• Strong problem-solving skills and attention to detail.
• Good understanding of software design patterns and scalable architecture.
• Familiarity with Agile development practices.

Role Overview We are seeking talented Backend Developers with expertise in , .NET, or Golang to design and implement scalable, high-performance backend systems. You will collaborate closely with frontend and AI engineering teams to build efficient APIs, manage databases, and integrate machine learning pipelines into production environments. Key Responsibilities Develop and maintain robust backend services and APIs using , .NET, or Golang. Design efficient database schemas, optimize queries, and ensure performance tuning in PostgreSQL. Implement WebSockets for real-time data communication and build scalable server-side applications. Configure reverse proxies and manage storage systems to optimize server performance and data handling. Collaborate with AI/ML engineers to integrate AI pipelines and ensure smooth data flow between systems. Write clean, testable, and maintainable code following best development practices. Monitor, debug, and optimize system performance to ensure high availability and scalability. Qualifications 3+ years of experience in backend development using , .NET, or Golang. Strong command of PostgreSQL, including query optimization and indexing. Hands-on experience with WebSockets and reverse proxy configurations (e.g., Nginx). Understanding of RESTful API design, version control (Git), and CI/CD workflows. Strong analytical and problem-solving skills with a focus on performance and reliability. Excellent collaboration and communication skills. Preferred Experience with microservices architecture and containerization (Docker, Kubernetes). Familiarity with cloud environments (AWS, Azure, or GCP). Prior exposure to AI/ML model integration and deployment. Experience with system monitoring, logging, and load balancing tools.

We are looking for a passionate Backend Developer With Blockchain relevant experience to join our growing team. You will work closely with senior engineers and contribute to the design, development, and deployment of our Backend and blockchain-based solutions.

Responsibilities:

-Build and maintain scalable REST APIs using and

-Implement secure user authentication, authorization, and data validation systems.

-Develop and manage MongoDB or other NoSQL/SQL databases.

-Deploy and manage backend applications on cloud services (e.g., AWS, Render, Vercel, or similar).

-Design, develop, and deploy secure and efficient smart contracts using Solidity.

-Integrate smart contracts with backend systems using or

-Collaborate with frontend developers and designers to integrate backend and blockchain functionality into web applications.

Required Skills and Qualifications:

Bachelor Degree in Computer Science or similar

1+ years of experience in backend development using , , or

Strong understanding of REST APIs, WebSockets, and server architecture.

Experience with MongoDB, PostgreSQL, or MySQL.

Knowledge of authentication mechanisms (JWT, OAuth, etc.)

Familiarity with version control systems (Git, GitHub/GitLab)

Knowledge of blockchain APIs, smart contract interaction or ) is an advantage.

The job is onsite, and all interviews and tests will be held onsite aswell.

Timings: 4:00PM - 12:30AM

Salary : 30k - 40k

Location: Bahria Phase 7, Rawalpindi

Job Type: Full-time

Work Location: In person

Job Overview:
Mashed Bytes is looking for a passionate and motivated
Back-End Developer (Ruby on Rails)
to join our growing development team.

We're seeking a recent graduate or developer with up to
2 years of experience
in building and maintaining scalable web applications.

You'll be responsible for:

• Developing server-side logic
• Ensuring high performance and responsiveness
• Collaborating closely with front-end developers to deliver seamless, high-quality products.

Key Responsibilities:

• Develop, maintain, and optimize back-end systems using
  Ruby on Rails
  .
• Write clean, efficient, and maintainable code following best practices.
• Design and implement
  RESTful APIs
  for web and mobile applications.
• Collaborate with front-end developers to ensure smooth integration between client and server.
• Identify performance bottlenecks, debug issues, and implement effective solutions.
• Write and maintain technical documentation for back-end systems and APIs.

Qualifications and Skills:

• Fresh graduates or candidates with up to 2 years of experience in Ruby on Rails development.
• Strong understanding of
  object-oriented programming
  and
  relational databases
  (PostgreSQL, MySQL).
• Experience with version control systems (
  Git
  ).
• Basic familiarity with HTML, CSS, and JavaScript.
• Strong problem-solving, analytical, and communication skills.
• Ability to work in a collaborative, fast-paced environment.

Preferred Skills:

• Experience with
  cloud platforms
  (AWS, Heroku).
• Knowledge of
  containerization tools
  (Docker).
• Familiarity with
  CI/CD pipelines
  and automated testing frameworks.

Why Join Mashed Bytes:

• Opportunity to learn and grow with a dynamic and supportive tech team.
• Exposure to modern technologies and real-world projects.
• A culture that encourages innovation, collaboration, and continuous learning.
• Room for career advancement and professional development.

We're Hiring Senior Backend Developer in Islamabad

Key Responsibilities

● Design, develop, and maintain backend services and APIs using and

● Build and manage microservices and containerized applications using Docker & Docker Compose.

● Design and optimize relational and non-relational databases (MySQL, PostgreSQL, MongoDB, Redis).

● Ensure scalability, security, and performance of backend systems.

● Collaborate with frontend developers to integrate APIs with HTML5, CSS3, Bootstrap 4, Tailwind CSS, and JavaScript-based applications.

● Implement caching, message queues, and other techniques for high-performance systems.

● Write clean, modular, and testable code following best practices.

● Troubleshoot and debug production issues in a timely manner.

● Work closely with the DevOps team for deployment, monitoring, and CI/CD pipelines.

___

Primary Skills (Core Expertise)

● Strong experience with and

● Knowledge of microservices architecture and containerization with Docker.

● Hands-on experience with databases: MySQL, PostgreSQL, MongoDB, and Redis.

● Solid understanding of frontend fundamentals (HTML5, CSS3, Bootstrap, Tailwind, JavaScript) for API integration.

● Experience with AWS (EC2, S3, RDS, Lambda, etc.) for cloud-based deployments.

● Familiarity with CI/CD pipelines using Jenkins, GitHub Actions, or similar tools.

● Understanding of DevOps practices for application deployment and scaling.

● Ability to design and implement scalable software architectures.

___

Qualifications

● Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent professional experience).

● 2–4 years of experience in backend development.

● Strong problem-solving and debugging skills.

● Solid understanding of software design patterns and architectural principles.

● Ability to work in an agile, fast-paced environment with cross-functional teams.

Company Description

3Hlabs is a forward-thinking software development company dedicated to delivering digital solutions for modern businesses. Founded by industry veterans, the company is driven by the principles of High Performance, High Quality, and High Impact. 3Hlabs specializes in custom web and mobile application development, providing end-to-end services from ideation to long-term support. Our certified team collaborates to create scalable, secure, and user-centric solutions across various industries including transportation, healthcare, fintech, and e-commerce.

Role Description

This is a full-time remote role for a Back End Developer. The Back End Developer will be responsible for designing, implementing, and maintaining server-side logic, databases, and ensuring high performance and responsiveness to requests from the front-end. This role will also involve collaborating with front-end developers, optimizing APIs, and integrating third-party services.

Qualifications

• Proficiency in Back-End Web Development and Software Development
• Strong understanding of Object-Oriented Programming (OOP) and Programming principles
• Experience in Front-End Development is an added advantage
• Ability to work independently and remotely
• Excellent problem-solving and critical thinking skills
• Experience with cloud services and database management is beneficial
• Bachelor's degree in Computer Science, Engineering, or related field

Department: Backend Development

Job Summary:

We are hiring a skilled Backend Developer ) to power our mobile apps. If you've got solid backend fundamentals, experience with RESTful API development, and an understanding of scalable systems — let's talk.

Key Responsibilities:

• Experience with payment gateway integration systems
• Design and implement scalable, secure backend APIs using
• Integrate backend services with mobile frontends
• Optimize application performance and scalability
• Collaborate with mobile and frontend teams to meet application requirements
• Ensure code quality with proper testing and documentation

Requirements:

• 2+ years of experience working with
• Strong understanding of or similar frameworks
• Experience with databases (MongoDB, PostgreSQL, etc.)
• Familiarity with REST APIs and authentication (JWT, OAuth)
• Knowledge of server deployment and version control (Git)

Location: On-site

Employment Type: Full-time

Experience: 2+ Years

Company: OBHost

Location: Karachi (On-site / Hybrid)

About the Role:

OBHost is looking for a talented Backend Developer with strong expertise in PHP, HTML, JavaScript (with speed optimization), and modern frameworks. The ideal candidate should be passionate about coding, problem-solving, and delivering scalable solutions for international projects.

Key Responsibilities:

• Develop and maintain backend applications, APIs, and dashboards.
• Write clean, secure, and efficient code using PHP, HTML, and JavaScript.
• Optimize websites and applications for speed and performance.
• Work with databases (MySQL, etc.) and handle server-side logic.
• Collaborate with front-end developers to integrate user-facing elements.
• Troubleshoot, debug, and upgrade existing systems.

Requirements:

• Proven experience as a Backend Developer.
• Strong knowledge of PHP, HTML, JavaScript ), CSS.
• Hands-on experience in speed optimization techniques.
• Familiarity with frameworks like Laravel, CodeIgniter, or similar (plus point).
• Good understanding of REST APIs and database design.
• Ability to work independently and manage tasks effectively.

Perks & Benefits:

• Competitive salary package (based on experience).
• Flexible working environment.
• Opportunity to work on global-scale hosting and cloud projects.

Interested candidates (Karachi based) can send their CVs at or WhatsApp at

Job Type: Full-time

Pay: Rs Rs50,000.00 per month

Work Location: In person