Java Full-Stack Engineer — Scalable Web Apps & APIs

Datamatics Technologies LLC; Islamabad; On-site; PKR 1 - 2; Full time

Job summary

Datamatics Technologies LLC is seeking a talented Full Stack Developer with a strong emphasis on Java and its frameworks to design, develop, and maintain scalable web applications. The role spans frontend and backend, with a focus on backend development using Java, Spring Boot, and related ecosystems.

You will collaborate with cross-functional teams to deliver high-quality, secure software. Responsibilities include building RESTful APIs, implementing authentication mechanisms, and working on

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or related field.
• 4-7 years of experience as a Full Stack or Backend-focused Java Developer.
• Strong expertise in Java (8/11/17) and object-oriented programming.
• Hands-on experience with Spring Boot, Spring MVC, Spring Security, Hibernate/JPA.
• Experience in building RESTful APIs and microservices architecture.
• Proficiency in frontend technologies such as React, Angular, or Vue.js.
• Strong understanding of HTML5, CSS3, and JavaScript/TypeScript.
• Experience with relational databases (MySQL, PostgreSQL, Oracle) and basic NoSQL (MongoDB).
• Familiarity with Git, version control workflows, and Agile methodologies.
• Knowledge of unit testing frameworks (JUnit, Mockito).
• Understanding of authentication protocols (JWT, OAuth2).

Responsibilities

• Design, develop, and maintain scalable full stack applications using Java-based technologies.
• Build robust backend services and RESTful APIs using Java, Spring Boot, and Spring ecosystem.
• Develop responsive and user-friendly frontend interfaces using modern JavaScript frameworks (React, Angular, or Vue.js).
• Integrate frontend applications with backend services and third-party APIs.
• Write clean, maintainable, and efficient code following best practices.
• Optimize application performance, scalability, and security.
• Participate in system design discussions and contribute to architecture decisions.
• Work with databases (SQL/NoSQL) for data modeling, queries, and optimization.
• Implement authentication and authorization mechanisms (OAuth2, JWT, etc.).
• Collaborate with DevOps teams for CI/CD pipeline integration and deployment.
• Troubleshoot, debug, and upgrade existing systems.
• Participate in code reviews and ensure adherence to coding standards.

Skills

Java

Spring Boot

Frontend frameworks

REST APIs

Git

Unit testing

OAuth2/JWT

SQL/NoSQL

Education

Bachelor's degree in Computer Science/Software Engineering

Tools

Docker

Kubernetes

React

Angular

Vue.js

MySQL

PostgreSQL

MongoDB

Git

Maven/Gradle

AWS

Azure

GCP

JUnit/Mockito

Job description

Datamatics Technologies LLC is seeking a talented Full Stack Developer with a strong emphasis on Java and its frameworks to design, develop, and maintain scalable web applications. The role spans frontend and backend, with a focus on backend development using Java, Spring Boot, and related ecosystems.

You will collaborate with cross-functional teams to deliver high-quality, secure software. Responsibilities include building RESTful APIs, implementing authentication mechanisms, and working on