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ZIP24

Job Title: Java Spring Boot DeveloperExperience: 1&ndash;2 yearsLocation: HybridDepartment: Engineering EmploymentType: Full-timeAbout the RoleWe are looking for a Junior Java Spring Boot Developer to join our backend engineering team. The ideal candidate has hands-on experience with Java, Spring Boot, REST APIs, relational databases, and is comfortable working in a fast-paced, product-driven environment.Key Responsibilities:<ul><li>Develop and maintain backend services and APIs using Java and Spring Boot.</li></ul><ul><li>Write clean, maintainable, and testable code following best practices.</li></ul><ul><li>Work with relational databases such as PostgreSQL or MySQL (queries, schema updates, indexing basics).</li></ul><ul><li>Debug issues, optimize performance, and assist in improving existing systems.</li></ul><ul><li>Collaborate with product, QA, DevOps, and senior engineers to deliver features on time.</li></ul><ul><li>Assist in integrating third-party APIs and message queues (RabbitMQ, Kafka, etc., optional).</li></ul>Required Skills &amp; Qualifications <ul><li>1&ndash;2 years of professional hands-on experience with Java and Spring Boot.</li></ul><ul><li>Strong understanding of REST API development.</li></ul><ul><li>Basic experience with SQL and relational database concepts.</li></ul><ul><li>Familiarity with Git and common branching strategies.</li></ul>Good to Have (Optional): <ul><li>Experience with Docker, Kubernetes, or containerized environments.</li></ul><ul><li>Exposure to message brokers like RabbitMQ, Redis.</li></ul>To Apply: Send your resume to neha.faisal@zip24.com or career@zip24.comJob Type: Full-timePay: Rs80.00 - Rs100,000.00 per monthWork Location: In person

Java Spring Boot Developer

Nisum

We are looking for a highly skilled Java Engineer with strong expertise in modern backend technologies, cloud platforms, and scalable system design. The role requires proficiency in .NET, Java, Spring frameworks, microservices, and containerized deployments, with exposure to frontend frameworks as a secondary skill set.What You&rsquo;ll DoThis position is ideal for a driven engineer passionate about building robust backend systems, cloud-native applications, and contributing to high-performing software solutions.Backend Development &amp; Cloud Engineering<ul><li>Design, develop, and maintain backend services using .NET / C# and Java (J2EE/Jakarta EE 9.0+).</li><li>Build microservices and enterprise applications using Spring Framework (5.x+), Spring Boot (2.6+), and Spring Cloud.</li><li>Deploy and manage applications in Docker / Kubernetes environments.</li><li>Implement cloud-native solutions with hands-on AWS Cloud services.</li><li>Apply unit and integration testing frameworks such as JUnit, Mockito, AssertJ, SpringTest, TestContainers, and WireMock.</li><li>Collaborate using GitHub, Jira, and CI/CD pipelines for development and project management.</li></ul>Collaboration &amp; Continuous Improvement<ul><li>Work closely with cross-functional teams to deliver scalable backend architectures.</li><li>Ensure code quality by following clean code, OOP principles, and design patterns.</li><li>Optimize performance, monitor bottlenecks, and maintain security best practices.</li><li>Write and maintain documentation, unit tests, and integration tests for reliability.</li></ul>What You Know<ul><li>3+ years of expertise in Java (J2EE/Jakarta EE 9.0+).</li><li>Hands-on experience with Spring Framework (5.x+), Spring Boot (2.6+), and Spring Cloud.</li><li>Proficiency with Docker, Kubernetes, and AWS Cloud.</li><li>Familiarity with testing frameworks: JUnit, Mockito, AssertJ, SpringTest, TestContainers, WireMock (at least one or two).</li><li>Knowledge of version control (GitHub) and project tracking tools (Jira).</li><li>Secondary exposure to frontend frameworks such as React or Angular.</li><li>Strong problem-solving, debugging, and analytical skills.</li></ul>Education<ul><li>Bachelor&rsquo;s degree in Computer Science, Software Engineering, or a related field.</li></ul>Job Type: Full-timePay: From Rs80,000.00 per monthWork Location: In person

Java Developer

Code CureAI

We are looking for a highly skilled Java Engineer with strong expertise in modern backend technologies, cloud platforms, and scalable system design. The role requires proficiency in .NET, Java, Spring frameworks, microservices, and containerized deployments, with exposure to frontend frameworks as a secondary skill set.What You&rsquo;ll DoThis position is ideal for a driven engineer passionate about building robust backend systems, cloud-native applications, and contributing to high-performing software solutions.Backend Development &amp; Cloud Engineering<ul><li>Design, develop, and maintain backend services using .NET / C# and Java (J2EE/Jakarta EE 9.0+).</li><li>Build microservices and enterprise applications using Spring Framework (5.x+), Spring Boot (2.6+), and Spring Cloud.</li><li>Deploy and manage applications in Docker / Kubernetes environments.</li><li>Implement cloud-native solutions with hands-on AWS Cloud services.</li><li>Apply unit and integration testing frameworks such as JUnit, Mockito, AssertJ, SpringTest, TestContainers, and WireMock.</li><li>Collaborate using GitHub, Jira, and CI/CD pipelines for development and project management.</li></ul>Collaboration &amp; Continuous Improvement<ul><li>Work closely with cross-functional teams to deliver scalable backend architectures.</li><li>Ensure code quality by following clean code, OOP principles, and design patterns.</li><li>Optimize performance, monitor bottlenecks, and maintain security best practices.</li><li>Write and maintain documentation, unit tests, and integration tests for reliability.</li></ul>What You Know<ul><li>3+ years of expertise in Java (J2EE/Jakarta EE 9.0+).</li><li>Hands-on experience with Spring Framework (5.x+), Spring Boot (2.6+), and Spring Cloud.</li><li>Proficiency with Docker, Kubernetes, and AWS Cloud.</li><li>Familiarity with testing frameworks: JUnit, Mockito, AssertJ, SpringTest, TestContainers, WireMock (at least one or two).</li><li>Knowledge of version control (GitHub) and project tracking tools (Jira).</li><li>Secondary exposure to frontend frameworks such as React or Angular.</li><li>Strong problem-solving, debugging, and analytical skills.</li></ul>Education<ul><li>Bachelor&rsquo;s degree in Computer Science, Software Engineering, or a related field.</li></ul>Job Type: Full-timeWork Location: In person

Avanza Solutions

JAVASPRINGBOOTREACTJSOOPS PROGRAMMINGMICROSERVICESJob Type: Full-timePay: Up to Rs200,000.00 per monthWork Location: In person

JAVA Developer

Launch Box

Senior Backend Developer &ndash; Join Our Growing Team!Location: Emarah Suites, Main Shahra-e-Faisal, Karachi Timings: 12:00 PM &ndash; 9:00 PM Employment Type: Full-time | On-siteAbout Us: We are a dynamic and fast-growing tech company dedicated to delivering high-quality, scalable, and innovative solutions for our global clients. We value creativity, problem-solving, and a passion for technology.Position Overview: We&rsquo;re looking for a Senior Backend Developer with strong expertise in Node.js and proficiency in multiple backend technologies. You will architect, develop, and maintain scalable APIs, databases, and backend systems, ensuring optimal performance and security.Key Responsibilities: Design, develop, and maintain robust backend systems and APIs, primarily using Node.js. Work with multiple backend languages and frameworks such as Python, PHP, Java, Go, or .NET when required. Collaborate with frontend developers, mobile engineers, and DevOps teams to deliver end-to-end solutions. Optimize applications for maximum speed, scalability, and security. Manage and maintain databases (SQL &amp; NoSQL) including PostgreSQL, MySQL, MongoDB. Implement best practices for code quality, testing, and deployment. Troubleshoot and debug applications, ensuring smooth performance. Mentor junior developers and lead code reviews.Requirements: 3+ years of backend development experience. Strong expertise in Node.js (Express.js, NestJS, or similar frameworks). Experience with RESTful APIs, GraphQL, and microservices architecture. Familiarity with cloud platforms (AWS, Azure, or GCP). Strong understanding of SQL &amp; NoSQL databases. Proficiency in other backend languages such as Python, PHP, Java, Go, or .NET. Knowledge of authentication, authorization, and security best practices (OAuth, JWT, etc.). Experience with Git and CI/CD pipelines. Strong problem-solving skills and attention to detail.Nice to Have: Experience with Docker, Kubernetes, and container orchestration. Knowledge of serverless architectures. Exposure to real-time systems (WebSockets, Socket.io).Job Type: Full-timeWork Location: In person

Senior Backend Developer (Node.js)

Aliza Solutions LTD

We are seeking a skilled Full Stack Developer to join our team. The ideal candidate will design, develop, and maintain web applications, working on both the front-end and back-end to deliver scalable, high-performance solutions.Responsibilities:<ul><li>Develop full-stack web applications using modern technologies.</li><li>Design and implement RESTful APIs and server-side logic.</li><li>Build responsive and user-friendly front-end interfaces.</li><li>Collaborate with UI/UX designers, developers, and stakeholders.</li><li>Optimize applications for performance, scalability, and security.</li><li>Troubleshoot, debug, and maintain existing applications.</li><li>Stay updated with industry trends and emerging technologies.</li></ul>Requirements:<ul><li>Proven experience as a Full Stack Developer or similar role.</li><li>Strong knowledge of front-end technologies (HTML, CSS, JavaScript, React, Angular, or Vue.js).</li><li>Strong knowledge of back-end technologies (Node.js, Express.js, Python, PHP, or Java).</li><li>Experience with databases (MongoDB, MySQL, PostgreSQL, or others).</li><li>Understanding of version control systems (Git).</li><li>Familiarity with cloud platforms (AWS, Azure, or Heroku) is a plus.</li><li>Problem-solving skills and the ability to work independently or in a team.</li></ul>Job Type: Full-timeWork Location: In person

Full Stack Developer – MERN/MEAN Stack

Progziel Technologies

Full Stack Developer (Full-Time | Day Shift)About the RoleWe are seeking an experienced Full Stack Developer to join our team in a full-time, day-shift position. This role is ideal for someone with 3&ndash;4 years of hands-on experience building and maintaining both frontend and backend systems. As part of our development team, you will work on creating scalable, high-quality web applications while collaborating closely with designers, product managers, and fellow engineers.Key Responsibilities<ul><li>Develop, enhance, and maintain full-stack web applications using modern frontend and backend technologies</li><li>Build responsive, user-friendly interfaces and secure, efficient backend services</li><li>Write clean, maintainable, and well-structured code</li><li>Participate in code reviews and contribute to improving development standards</li><li>Troubleshoot, debug, and resolve application issues</li><li>Collaborate with cross-functional teams to translate requirements into technical solutions</li><li>Contribute to documentation, coding standards, and best practices</li></ul>Required Qualifications<ul><li>3&ndash;4 years of professional Full Stack Development experience</li><li>Strong frontend skills: HTML, CSS, JavaScript/TypeScript, and frameworks such as React or Vue</li><li>Solid backend knowledge in Node.js, Python, Java, or similar languages</li><li>Experience with relational and/or NoSQL databases</li><li>Proficiency with Git and collaborative version control workflows</li><li>Strong problem-solving abilities, attention to detail, and a proactive mindset</li><li>Ability to work both independently and as part of a productive team</li></ul>Preferred Qualifications<ul><li>Experience working with cloud platforms (AWS, Google Cloud, Azure)</li><li>Understanding of CI/CD pipelines and DevOps tools</li><li>Experience with agile development methodologies</li></ul>What We Offer<ul><li>Competitive salary.</li><li>Professional growth and learning opportunities</li><li>Supportive, collaborative, and inclusive work environment</li></ul>Work Schedule<ul><li>Day Shift: 9:00 AM &ndash; 6:00 PM</li><li>Monday to Friday</li><li>Saturday: 9:00 AM - 2:00 PM</li><li>Full-time, on-site role</li></ul>Job Type: Full-timeWork Location: In person

Full Stack Developer (Full-Time | Day Shift)

Explore 303+ Python java developer in Karachi this December. Find roles across top companies and apply now to boost your career.

303 python java developer jobs IN Karachi

Java Spring Boot Developer

Java Developer

Java Developer

JAVA Developer

Senior Backend Developer (Node.js)

Full Stack Developer – MERN/MEAN Stack

Full Stack Developer (Full-Time | Day Shift)