Principal Software Engineer (Onsite, Lahore, PKR Salary)

Requirements:

• 6+ years of hands-on experience in software development using Core Java (JDK 11+, preferably JDK 21) and the Spring Framework, including Spring Boot, REST, Security, Data, and Cloud modules.
• Bachelors or Masters degree in Computer Science or Software Engineering, with certifications in Java, Spring, or Cloud platforms preferred.
• Strong understanding of microservices architecture, containerization technologies such as Docker and Kubernetes, and Apache Kafka (Producer/Consumer, Streams, Schema Registry, Offset Management).
• Proficiency in front-end technologies, including Angular 13+, TypeScript, HTML5, CSS3, and Bootstrap/Material, along with a solid grasp of multithreading and concurrency concepts.
• Expertise in databases such as Cassandra, SQL, or MongoDB, and experience with application servers like JBoss, WildFly, or Tomcat.
• Working knowledge of version control systems (Git, Bitbucket) and build/CI-CD tools such as Maven/Gradle, Jenkins, and SonarQube.
• Experience with cloud platforms (preferred: AWS, Azure, or GCP) for application deployment and messaging.
• Proficiency in testing frameworks (JUnit, Mockito, REST Assured, Postman) and API documentation tools (Swagger/OpenAPI).
• Practical understanding of Agile/Scrum methodologies; experience as a Scrum practitioner will be a plus.
• Background in Healthcare or Clinical Data Integration (FHIR, HL7, CCD/CCDA) and knowledge of security frameworks such as OAuth2, JWT, and OpenID Connect.
• Experience with Elasticsearch or Cassandra-based analytics, DevOps pipelines, and container orchestration.
• Strong understanding of distributed systems design, resilience, and fault tolerance, with exposure to message-driven architectures and event sourcing.
• Excellent analytical, problem-solving, communication, and collaboration skills, along with a proactive attitude and ownership mindset.
• Ability to adapt quickly and learn new tools and technologies as needed.
• Exposure to data streaming, ETL, or batch processing systems will be an added advantage.

Responsibilities:

• Design and develop scalable, secure, and high-performance backend services using Java 11/21 and Spring Boot.
• Build and maintain RESTful APIs and integrate them with frontend applications and external systems.
• Develop interactive and responsive web interfaces using Angular 13+.
• Implement asynchronous and multithreaded processing for high-throughput applications.
• Work with Kafka for real-time data streaming and event-driven architectures.
• Manage data persistence layers using Cassandra, SQL Server, or MongoDB.
• Deploy and manage applications on JBoss, WildFly, or Tomcat servers.
• Participate in Agile/Scrum ceremonies and contribute to sprint planning, estimation, and retrospectives.
• Collaborate with cross-functional teams to ensure smooth integration, testing, and delivery.
• Follow best practices for code quality, performance tuning, and security compliance.
• Maintain detailed documentation for architecture, design, and APIs.