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backend developer

Quanrio LLP

This position is for a client and not part of Quanrio&rsquo;s internal hiring.Location: Karachi, Pakistan Experience Required: Minimum 3 yearsJob Description: We are looking for a highly motivated Backend Developer to join our team in Karachi. The ideal candidate will have at least 3 years of professional experience in backend development, with working exposure to AI Large Language Models (LLMs). You will be responsible for designing and implementing scalable server‑side applications, integrating AI/ML features into production systems, and collaborating with cross‑functional teams to deliver innovative solutions.Key Responsibilities<ul><li>Develop, optimize, and maintain backend services and APIs.</li><li>Integrate AI/LLM models into applications for intelligent features such as chatbots, content generation, and recommendation systems.</li><li>Collaborate with data scientists and ML engineers to deploy and scale AI models.</li><li>Ensure system performance, security, and reliability.</li><li>Manage databases, caching, and distributed systems for high‑availability applications.</li><li>Conduct code reviews, write unit tests, and maintain documentation.</li><li>Stay updated with emerging backend and AI technologies.</li></ul>Requirements<ul><li>Bachelor&rsquo;s degree in Computer Science, Software Engineering, or related field.</li><li>Minimum 3 years of professional experience in backend development.</li><li>Strong proficiency in Node.js, Python, or Java for backend services.</li><li>Experience with frameworks such as Express.js, Django, or Spring Boot.</li><li>Solid understanding of databases: MongoDB, PostgreSQL, MySQL, or SQL Server.</li><li>Exposure to AI/LLM frameworks such as Hugging Face Transformers, LangChain, OpenAI APIs, or similar.</li><li>Familiarity with cloud platforms (AWS, Azure, GCP) and containerization tools like Docker/Kubernetes.</li><li>Knowledge of RESTful APIs, GraphQL, and microservices architecture.</li><li>Experience with CI/CD pipelines, Git/GitHub, and Agile methodologies.</li><li>Strong problem‑solving skills and ability to work in collaborative teams.</li></ul>Job type: Full timeJob Type: Full-timePay: Rs250,000.00 - Rs280,000.00 per monthWork Location: In person

Backend Developer

WeUno Technologies 

We are looking for a talented Mid-Level Backend Developer to join our growing engineering team. If you have strong backend expertise, hands-on experience with modern JavaScript frameworks, and enjoy building scalable applications, this role is for you!NOTE : Please dont apply if you are freshly graduate or having less than 3 years of experience .Job Responsibilities:<ul><li>Develop and maintain robust server-side applications using Node.js, Express, and MongoDB.</li><li>Build secure and reliable RESTful Web APIs using Node.js.</li><li>Perform database development, maintenance, optimization, and reporting using MySQL and MongoDB.</li><li>Implement strong web security best practices, including OAuth for authentication and authorization.</li><li>Use Git for version control and collaborate closely with project managers and senior developers.</li><li>Work with project managers, senior developers, and business teams for task planning, sharing new ideas, demonstrating code, and resolving technical issues.</li><li>Assist team members in maintaining architecture standards, ensuring functional accuracy, and following industry best practices.</li><li>Document, record, and communicate the progress of assigned tasks to project teams and managers.</li><li>Contribute to the development and scaling of large-scale applications, ensuring performance and long-term success.</li><li>Work with and support Next.js for backend routes, server-side functions, and full-stack implementations when required.</li></ul>Preferred Skills:<ul><li>Working knowledge of SQL and NoSQL databases.</li><li>Strong understanding of version control systems like Git.</li><li>Good understanding of backend technologies and architectural patterns.</li><li>Hands-on experience with React.js and Next.js (Frontend + Backend capabilities).</li><li>Atleast 3-5 years of experience required .</li><li>Bachelor&rsquo;s degree in Computer Science, IT, or related field.</li></ul>Job Type: Full-timeApplication Question(s):<ul><li>What is your Current Salary ?</li><li>What is your Expected Salary?</li></ul>Work Location: In person

eSpark Consulting Group

We are looking for a skilled Backend Developer with hands-on experience in backend development, specifically with Node.js, Java, modern DevOps practices, and Kafka. The ideal candidate will be responsible for building scalable backend systems, designing robust APIs, and contributing to high-quality architecture and deployment workflows.Responsibilities:<ul><li>Develop, maintain, and enhance backend services using Node.js and Java, ensuring system reliability, scalability, and high performance.</li><li>Design, develop, test, and deploy RESTful APIs and backend endpoints supporting microservices and distributed architecture.</li><li>Architect and manage Apache Kafka&ndash;based event-driven systems, including topic creation, partition strategies, schema management, producers, consumers, and real-time streaming workflows.</li><li>Implement message serialization formats such as JSON, Avro, or Protobuf for Kafka-based systems.</li><li>Optimize event throughput and latency in Kafka clusters while ensuring proper load balancing and fault tolerance.</li><li>Collaborate in architectural planning, contributing to system design decisions, scalability strategies, and high-availability setups.</li><li>Develop microservices using Node.js and Java Spring Boot, ensuring modularity, clean structure, and efficient service communication.</li><li>Build CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI) for automated builds, testing, deployments, and environment configurations.</li><li>Manage DevOps workflows, including container build automation, environment setup, secrets management, and release processes.</li><li>Write infrastructure automation scripts (IaC tools or shell scripting) for smoother deployments and reproducible environments.</li><li>Work with SQL databases like MySQL and PostgreSQL, focusing on efficient schema design, indexing, and optimized query performance.</li><li>Manage NoSQL databases like MongoDB and Redis, ensuring proper data modeling and high-performance caching.</li><li>Integrate backend services with front-end applications, mobile clients, internal microservices, and third-party APIs.</li><li>Use Docker for containerization of services and apply Kubernetes for orchestration, scaling, deployment strategies, and cluster operations.</li><li>Implement API-level security controls, including authentication, authorization, RBAC, rate limiting, and token-based access.</li><li>Diagnose and resolve production incidents, using logs, metrics, and monitoring tools to perform root-cause analysis and preventive fixes.</li><li>Maintain code quality, documentation, code reviews, and adherence to engineering best practices and design patterns.</li><li>Monitor system performance and infrastructure health using Prometheus, Grafana, ELK Stack, or CloudWatch dashboards.</li><li>Optimize application performance, caching strategies, resource efficiency, and database query tuning for improved throughput.</li><li>Manage Git workflows, including branching strategies, pull/merge request reviews, version control hygiene, and release management</li><li>Build and integrate backend services with Odoo ERP, ensuring smooth data workflows, system configurations, and business logic execution.</li><li>Develop and maintain APIs and real time communication layers required for IoT-based connected systems and cloud operations.</li></ul>Requirements:<ul><li>Strong expertise in Node.js and Java, with hands-on experience in backend service development (experience with Spring Boot, Quarkus, or similar frameworks is a strong plus).</li><li>Hands-on experience working with Apache Kafka, including event streaming, pub/sub models, consumer groups, topic partitioning, and distributed messaging architectures.</li><li>Solid understanding of DevOps practices, including CI/CD pipelines, Git branching strategies, build automation, environment configuration, and automated deployment workflows.</li><li>Experience working with cloud platforms such as AWS, Azure, or GCP, covering compute services, storage solutions, IAM, networking basics, and cloud-native tooling.</li><li>Proficiency with SQL and NoSQL databases, including MySQL, PostgreSQL, MongoDB, and Redis, with strong skills in schema design, indexing, query optimization, and data modeling.</li><li>Strong knowledge of microservices architecture, API gateways, service discovery, inter-service communication patterns, and distributed systems concepts.</li><li>Advanced experience with Docker and Kubernetes, including containerization, orchestration, scaling strategies, cluster management, and deployment pipelines.</li><li>Strong problem-solving and debugging skills, with the ability to analyze issues across distributed systems and optimize overall application performance.</li><li>Excellent communication, collaboration, and teamwork abilities, with experience working closely with cross-functional teams such as DevOps, QA, Product, and Frontend.</li><li>Familiarity with monitoring and observability tools such as Grafana, Prometheus, ELK Stack, or CloudWatch for performance tracking and issue diagnosis.</li><li>Strong understanding of backend security best practices, including API security, authentication/authorization mechanisms, data protection, and secure coding standards.</li><li>Hands-on experience with Odoo ERP integration, backend communication, modular customization, and working with IoT/connected systems, including API interfacing and device-data handling.</li></ul>Nice to Have:<ul><li>Experience with additional messaging tools (RabbitMQ, SNS/SQS).</li><li>Knowledge of system design and high-availability architectures.</li><li>Understanding of backend security principles and API protection.</li><li>Experience with monitoring tools such as Prometheus, Grafana, ELK, or CloudWatch.</li></ul>Qualification: Bachelor&rsquo;s degree in Computer Science, Software Engineering, or related field.Experience: 3&ndash;4 years of professional experience as a Backend Engineer or Software Engineer.Benefits:<ul><li>Paid Time Off</li><li>Flexible Hour</li></ul>Job Type: Full-timeWork Location: In person

Ideas Private Limited

<div>
 TitleBackend DeveloperApply beforeDec 19, 2025CityKarachiResponsibilitiesDevelop and maintain backend services using PHP, Laravel, and Node.js.Build and customize Shopify apps/extensions (private &amp; public).Integrate Shopify Plus APIs, Webhooks, and Storefront/Admin APIs.Develop secure and scalable REST/GraphQL APIs.Optimize MySQL queries and backend performance.Troubleshoot and resolve backend, API, and Shopify integration issues.Maintain clean documentation and follow secure coding standards.RequirementsHands-on Shopify app development (Liquid, Admin API, Storefront API, Webhooks).Experience with GraphQL, REST APIs, OAuth, App Bridge.Proficient in MySQL, caching (Redis), and queue systems.Familiar with Git, CI/CD, cloud hosting (AWS/Vercel/Forge).Good understanding of eCommerce workflows.
 
 
 Bachelor's Of Software Engineering or equivalent
 
 
 
 Minimum 6-8 Years Of Experience
 
 
 
 Benefits
 
 
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 Excellent Salary
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 Fuel Allowance
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 Medical Insurance
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 Annual Leaves
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 Provident Fund
 </li>
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 EOBI
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Systems Limited

<div>Position: Senior Backend Developer (Python/FastAPI + Azure) 
Location: Pakistan

Summary

Python Developer at Systems Limited will be responsible to develop scalable, secure, and well-architected backend systems, and is comfortable working in a fast-paced, cloud-native environment. Strong understanding of architecture, system design and optimizations.
<div>
Responsibilities:</div>
<ul>
<li>Design, build, and maintain RESTful APIs and backend services using Python (FastAPI)</li>
<li>Architect and Implement authentication, session management, and authorization workflows using Azure Entra ID (formerly Azure AD)</li>
<li>Write clean, testable, and well-documented code following best practices</li>
<li>Ensure high availability, security, and performance of backend systems</li>
<li>Collaborate closely with frontend, DevOps, and QA teams</li>
<li>Use Git for source control and follow collaborative branching/review practices</li>
<li>Oversee code review, architecture design and performance tuning.</li>
<li>Derive adoption of best practices in code quality, CI/CD, monitoring and observability</li>
</ul>
<div>Requirements:</div>
<ul>
<li>6+ years of hands-on backend development experience</li>
<li>Proficiency with Python and FastAPI (or similar frameworks like Flask/Django REST)</li>
<li>Strong knowledge of Azure cloud services, especially:</li>
<li><ul><li>Azure Entra ID (OAuth2, SSO, JWT)</li>
<li>Azure SQL, Cosmos DB, Redis</li>
<li>Azure Web PubSub, App Services, and APIM</li>
</ul></li><li>Experience with Git, pull requests, and version control workflows</li>
<li>Strong understanding of secure coding principles and session handling</li>
<li>Experience building scalable and modular backend architectures</li>
<li>Excellent communication, leadership skills.</li></ul></div>

Senior Backend Developer

TechForge Innovations

Location: Gulistan e Johar KarachiShift: Night 9 pm to 6 am.Internship Duration: 3 monthsStipend: Starts from 25,000Requirement: Must Have own LaptopAbout Us:At TechForge Innovations, we build powerful software solutions that help businesses grow and innovate. From web and mobile apps to enterprise systems, our goal is to deliver cutting-edge technology with real-world impact.About the RoleWe are seeking a passionate and driven Backend Developer Intern to join our development team. This role offers hands-on experience in building and maintaining backend systems while working on real-world projects.Responsibilities<ul><li>Develop, test, and maintain backend services and APIs</li><li>Work with databases to design and optimize data models</li><li>Collaborate with frontend developers and other team members</li><li>Write clean, efficient, and well-documented code</li><li>Debug and resolve backend-related issues</li><li>Follow best practices in backend development</li></ul>Requirements<ul><li>Basic to intermediate knowledge of backend technologies (Node.js / Python / Java / PHP)</li><li>Understanding of RESTful APIs</li><li>Familiarity with databases (MySQL, PostgreSQL, MongoDB, etc.)</li><li>Knowledge of Git and version control</li><li>Strong problem-solving skills and willingness to learn</li><li>Own laptop is mandatory</li></ul>Nice to Have<ul><li>Experience with backend frameworks (Express, Django, Spring Boot, etc.)</li><li>Familiarity with authentication, security, and API performance optimization</li><li>Personal or academic backend projects</li></ul>What We Offer<ul><li>Monthly stipend starting from 25,000</li><li>Hands-on experience with live projects</li></ul>Job Type: Full-timePay: From Rs25,000.00 per monthWork Location: In person

Backend Developer - INTERN

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294 backend developer jobs IN Karachi Jobs In Karachi

Backend Developer

Backend Developer

Backend Developer

Backend Developer

Senior Backend Developer

Senior Backend Developer

Backend Developer - INTERN