Description The Back End Developer will develop and maintain APIs, services, and server-side logic and databases. You'll contribute to system architecture and help scale our platforms. You will ensure high performance and responsiveness of applications, working alongside frontend developers and other team members. Responsibilities Design, build and implement backend services and APIs Design data models and manage database integration Integrate with databases and third-party APIs Implement security and data protection measures Optimize performance and security of systems Requirements Strong knowledge of backend technologies / languages, particularly .NET ecosystem Experience in .NET 8+ (or latest version), including ASP.NET Core for building web APIs and services. Experience with relational databases, such as PostgreSQL, MySQL for structured data, complex queries, and ACID compliant operations Experience with NoSQL databases, such as MongoDB, for handling unstructured or semi-structured data, schema flexibility, and high-throughput scenarios Experience with RESTful APIs for development of robust, secure RESTful services with best practice for APU design, versioning and documentation, using Swagger / Open API Experience in Microservices Architecture, for design, implementation, and management of distributed systems using microservices principles, ensuring loose coupling, scalability, and resilience Experience in Message Queuing:, using RabbitMQ for asynchronous communication, event-driven architecture, and reliable message brokering between services Experience in Containerization and Orchestration, using Kubernetes (K8s) for deploying, scaling, and managing containerized applications in production environments and Docker for containerization Experience in Authentication, using Auth0 for identity management, JWT-based authentication Experience in Cloud Services, such as AQS, Azure, GC Nice to have Experience in Rabbit MQ Middleware Prior experience in the EdTech domain (e-learning platforms, digital classrooms, LMS) Knowledge of learning science, instructional design, or accessibility standards (e.g., WCAG) Familiarity with tools like Moodle, Canvas, Zoom SDK, or Google Classroom integration Working conditions Partly / fully remote B2B contract

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Backend Developer