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We are seeking a skilled Senior Backend Engineer to join our agile development team. In this role, you will be responsible for designing, developing, and maintaining scalable backend services and APIs, while contributing to architectural decisions and mentoring junior developers. Key Responsibilities:

• Design and develop robust, scalable backend services using Java Spring Boot/Kotlin/C# • Architect and implement RESTful APIs and microservices following best practices • Design and implement cloud-native solutions using AWS services • Lead the design and implementation of database schemas and data models • Ensure high performance, reliability, and security of backend systems • Collaborate with frontend developers and other stakeholders to define and implement API contracts • Mentor junior developers and conduct thorough code reviews • Participate in system design discussions and technical planning • Implement and maintain CI/CD pipelines • Troubleshoot production issues and optimise system performance Required Skills and Experience:

• 8+ years of professional software development experience • Strong expertise in either Java Spring Boot, Kotlin, or C# (.NET Core) • Extensive experience with RESTful APIs and microservices architecture • Proven experience with AWS services including: o AWS Lambda and serverless architecture o Amazon ECS/EKS o Amazon RDS and DynamoDB o Amazon S3 o AWS CloudFormation/CDK o Amazon CloudWatch o AWS IAM and security best practices • Proficient in SQL and experience with both relational and NoSQL databases • Strong understanding of software design patterns and principles (SOLID, DRY, etc.) • Experience with version control systems (Git) and CI/CD practices • Knowledge of testing methodologies and frameworks (JUnit, TestNG, NUnit) • Experience with agile development practices • Strong analytical and problem-solving skills Technical Skills: • Languages: Java 11+/Kotlin/C# • Frameworks: Spring Boot, Spring Cloud, .NET Core • Infrastructure as Code using Terraform • Databases: PostgreSQL, MySQL, MongoDB, DynamoDB • Tools: Maven/Gradle, Git, Jenkins/GitLab CI • Testing: JUnit, Mockito, TestContainers • Documentation: Swagger/OpenAPI • Monitoring: CloudWatch, ELK Stack, Prometheus, Grafana A Plus/Good to Have: • AWS certifications (Solutions Architect, Developer) • Experience with container orchestration (Kubernetes, Docker) • Experience with message queuing systems (Kafka, RabbitMQ) • Familiarity with reactive programming • Experience with Singapore Government IT projects • Knowledge of Singapore Government Technology Stack (SGTS) • Experience integrating with SingPass and CorpPass authentication • Understanding of government security policies and compliance requirements • Experience with performance monitoring tools and APM solutions • Experience with event-driven architecture

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