Java AWS Backend Developer (3–6 Years)

Job Requirements At Quest Global, it’s not just what we do but how and why we do it that makes us different. With over 25 years as an engineering services provider, we believe in the power of doing things differently to make the impossible possible. Our people are driven by the desire to make the world a better place—to make a positive difference that contributes to a brighter future. We bring together technologies and industries, alongside the contributions of diverse individuals who are empowered by an intentional workplace culture, to solve problems better and faster. Key Responsibilities • Design, develop, enhance and maintain Java-based backend applications and RESTful APIs using Spring Boot or equivalent frameworks. • Develop scalable, maintainable and secure microservices following established architecture principles and coding standards. • Integrate backend applications with relational and NoSQL databases, including data modelling, query development and transaction management. • Build and maintain integrations with messaging and streaming platforms such as Apache Kafka and AWS managed services. • Develop application components using appropriate caching, asynchronous processing and error-handling mechanisms. • Deploy, configure and troubleshoot backend applications in AWS cloud environments. • Work with containerized applications using Docker and Kubernetes; exposure to Amazon EKS is an advantage. • Implement application logging, metrics and monitoring to support troubleshooting and operational visibility. • Write unit, integration and automated tests to ensure code quality, reliability and maintainability. • Analyse and resolve application defects, performance issues and production support incidents. • Participate in code reviews, technical discussions and continuous improvement activities. • Collaborate with architects, QA engineers, DevOps engineers and other developers to deliver software features. • Contribute to technical documentation and follow secure software development practices. • • • • • • We are known for our extraordinary people who make the impossible possible every day. Questians are driven by hunger, humility, and aspiration. We believe that our company culture is the key to our ability to make a true difference in every industry we reach. Our teams regularly invest time and dedicated effort into internal culture work, ensuring that all voices are heard. We wholeheartedly believe in the diversity of thought that comes with fostering a culture rooted in respect, where everyone belongs, is valued, and feels inspired to share their ideas. We know embracing our unique differences makes us better, and that solving the worlds hardest engineering problems requires diverse ideas, perspectives, and backgrounds. We shine the brightest when we tap into the many dimensions that thrive across over 21,000 difference-makers in our workplace. Work Experience · 3–6 years of professional experience in Java backend development. · Strong knowledge of Java, object-oriented programming, collections, exception handling, concurrency fundamentals and common design patterns. · Hands-on experience with Spring Boot, Spring MVC, Spring Data/JPA and RESTful API development. · Experience developing microservices and integrating applications with relational databases such as PostgreSQL, MySQL or Oracle. · Understanding of SQL, database design, transactions, indexing and query optimisation. · Experience with messaging technologies such as Apache Kafka, including basic producer and consumer concepts. · Working knowledge of AWS services and cloud fundamentals; exposure to services such as RDS, S3, MSK, ElastiCache and EKS is desirable. · Familiarity with Docker, Kubernetes and container-based application deployment. · Understanding of caching concepts and technologies such as Redis or Amazon ElastiCache. · Experience with unit testing and mocking frameworks such as JUnit and Mockito. · Familiarity with Git, Maven or Gradle, CI/CD pipelines and Linux fundamentals. · Basic understanding of application security, authentication, authorization and secure API development. · Good analytical, debugging and problem-solving skills, with effective communication and collaboration abilities Mandatory Skills · Strong Java programming and Spring Boot experience. · Hands-on experience developing REST APIs and microservices. · Experience working with relational databases and SQL. · Understanding of software testing practices, including unit testing. · Working knowledge of AWS or other cloud platforms.