**About Octopus by RTG** Octopus by RTG is the tech hiring and outsourcing arm of **Robusta Technology Group**, dedicated to connecting exceptional tech talent with top\-tier organizations across the **MENA, GCC, Europe, the US, and Canada**. We specialize in building strong, long\-term partnerships between skilled professionals and innovative companies. Our mission is to **empower growth, innovation, and excellence** by matching the right talent with the right opportunities. Currently, we are hiring a **Sr. Backend Developer** for one of our **partner organizations in KSA** on a **1\-year contract**, offering the opportunity to contribute to exciting projects within a dynamic and forward\-thinking environment. ### **Main Responsibilities** **Backend Development \& Architecture** * Design, develop, and maintain scalable, secure backend systems using **Java** and **Spring Boot**. * Contribute to **architecture design** ensuring modularity, maintainability, and high performance. * Build and manage **microservices\-based architectures**. **API \& Integration** * Develop and maintain **RESTful APIs** and integrate them with internal and external systems. * Ensure smooth data exchange between services and databases. **Database Management** * Design, manage, and optimize **SQL (PostgreSQL, MySQL, Oracle)** and **NoSQL (MongoDB, Cassandra)**databases. * Ensure **data integrity**, **performance**, and **scalability**. **Code Quality \& Performance** * Write **clean, well\-documented, and testable code** following best practices. * Conduct **unit and integration testing** using frameworks like **JUnit** and **Mockito**. * Optimize system **performance, latency, and throughput**. **Collaboration \& Mentorship** * Collaborate closely with **front\-end developers**, **product managers**, and **DevOps teams**. * **Mentor** junior developers and lead **code reviews** to uphold standards. **Security \& DevOps** * Implement **security best practices**, including authentication and authorization (OAuth2, JWT). * Contribute to **CI/CD pipelines**, deployments, and monitoring systems. **Continuous Improvement** * Stay updated with new technologies in the **Java \& Spring Boot ecosystem**. * Suggest and adopt tools to enhance productivity and code quality. **Requirements** **Experience \& Technical Skills** * **4\+ years** of professional experience in **Java development**, primarily with **Spring Boot**. * Strong proficiency in **Java 8\+** (streams, lambdas, etc.). * Expertise in **Spring Boot ecosystem**: Spring Data, Spring Security, Spring Cloud. * Hands\-on experience with **Microservices architecture**. * Proficient in **RESTful API design** and integration. * Solid experience with **SQL** (PostgreSQL, MySQL, Oracle) and **NoSQL** (MongoDB, Redis, Cassandra). * Familiarity with **message brokers** (Kafka, RabbitMQ). * Understanding of **Docker, Kubernetes**, and containerized deployments. * Experience with **testing frameworks** (JUnit, Mockito). * Strong knowledge of **authentication \& authorization mechanisms** (OAuth2, JWT). * Experience with **CI/CD tools** (Jenkins, GitLab CI, CircleCI). * Proficiency with **Git** and branching strategies (GitFlow). * Familiarity with **cloud platforms** (OCI, GCP). **Soft Skills** * Excellent **problem\-solving** and **analytical thinking**. * Strong **communication and teamwork** abilities. * Proven **mentorship and leadership** capabilities. * Self\-motivated and capable of working **independently**. * Quick to learn and adapt to **new technologies**. ### **Preferred Qualifications** * Experience with **Spring Cloud**, **GraphQL**, or **Kubernetes**. * Familiarity with **Agile methodologies** (Scrum, Kanban). * Experience with **ElasticSearch**, **Solr**, or **event\-driven architecture (CQRS/Event Sourcing)**.