Sinch is a global leader in the Communications Platforms as a Service (CPaaS) and mobile customer engagement space. We enable billions of interactions through mobile messaging, voice, email and video. We are seeking a highly skilled Senior Software Engineer to contribute across backend and frontend technologies in a hybrid role based in Stockholm, Sweden. The role requires deep experience in Java Spring Boot, React, cloud-native application design, API-driven architectures, DevOps practices, and modern AI-assisted development approaches.

Key Responsibilities: - Full Stack Development: actively contribute to backend services and APIs using Java, Spring Boot, Spring Cloud, Hibernate/JPA; build responsive frontend applications with React, TypeScript/JavaScript, HTML5 and CSS. - Implement RESTful and GraphQL APIs, authentication/authorization, and integration services. - Perform code reviews, enforce coding standards, and troubleshoot complex issues across application layers. - Optimize database queries, caching strategies and overall performance. - Participate in sprint delivery activities as an individual developer when required.

AI-Assisted Engineering: - Utilize AI-powered development tools to improve productivity and delivery speed. - Ensure AI-generated code aligns with security, compliance, quality and maintainability standards.

Cloud, DevOps & Platform Engineering: - Design and support cloud-native deployments and containerized applications. - Work with CI/CD pipelines and DevOps automation practices. - Support Kubernetes, Docker, infrastructure automation and deploy

Sinch is a global leader in the Communications Platforms as a Service (CPaaS) and mobile customer engagement space. We enable billions of interactions through mobile messaging, voice, email and video. We are seeking a highly skilled Senior Software Engineer to contribute across backend and frontend technologies in a hybrid role based in Stockholm, Sweden. The role requires deep experience in Java Spring Boot, React, cloud-native application design, API-driven architectures, DevOps practices, and modern AI-assisted development approaches.

Key Responsibilities: - Full Stack Development: actively contribute to backend services and APIs using Java, Spring Boot, Spring Cloud, Hibernate/JPA; build responsive frontend applications with React, TypeScript/JavaScript, HTML5 and CSS. - Implement RESTful and GraphQL APIs, authentication/authorization, and integration services. - Perform code reviews, enforce coding standards, and troubleshoot complex issues across application layers. - Optimize database queries, caching strategies and overall performance. - Participate in sprint delivery activities as an individual developer when required.

AI-Assisted Engineering: - Utilize AI-powered development tools to improve productivity and delivery speed. - Ensure AI-generated code aligns with security, compliance, quality and maintainability standards.

Cloud, DevOps & Platform Engineering: - Design and support cloud-native deployments and containerized applications. - Work with CI/CD pipelines and DevOps automation practices. - Support Kubernetes, Docker, infrastructure automation and deploy