Senior Fullstack Developer (.NET TypeScript) – Cloud & Web

Outtask is a globally established company with over 25 years of experience in IT. Our Spanish office, located in Valencia, focuses on creating highly specialized tech teams that tackle complex challenges for the world's industry leaders. We have a deeply rooted people focused culture and are a completely flat organization. Creativity, innovation, and perseverance are our core values and are reflected in our entire team. We’re hiring a full-time Backend Developer with experience in modern Microsoft technical stack software engineering, backend integration, and cloud-native systems. You'll play a key role in building scalable backend services and robust integrations that drive operational efficiency and enhance our digital capabilities. This position requires strong backend engineering skills along with integration experience to support secure, reliable communication between platforms. English is the corporate language and spoken proficiency is required for effective team and customer collaboration. Your Responsibilities Design, develop, and maintain fullstack web applications using .NET 8 , C# , React , and TypeScript Build secure, maintainable REST APIs and GraphQL endpoints to support dynamic frontends Create responsive UI components and interfaces using React and Apollo Client Write automated tests using Jest , React Testing Library , and MSTest Ensure code quality, performance, and maintainability across both frontend and backend Use containerization and Kubernetes -based deployments for shipping fullstack features Collaborate with designers, backend engineers, and DevOps to create cohesive user experiences Integrate AI-assisted tooling (e.g., GitHub Copilot , Cursor ) to optimize development speed and code clarity Participate in agile planning, estimations, code reviews, and continuous improvement processes Required Technical Skills Frontend: Proficient in TypeScript , React , and component-based architecture Experience with GraphQL , Apollo Client , and Apollo Server Strong testing practices with Jest and React Testing Library Familiarity with monorepo tooling (e.g., NX , Turborepo , Lerna ) Backend: Solid experience with C# and .NET 8 for scalable backend development Knowledge of CQRS , design patterns (e.g., factory, pub/sub), and modular architecture Experience with PostgreSQL or other relational databases Working knowledge of Azure , Azure Service Bus , JWT , OpenID Connect Familiarity with tools like Swagger/OpenAPI , Polly , Serilog , Datadog , and OpenTracing Tooling & Development: Experience using Git , modern CI/CD, and container-based workflows AI-powered development practices (e.g., GitHub Copilot) to speed up refactors, test creation, and boilerplate reduction Soft Skills Strong communication skills in both English Proactive and self-managed with attention to detail Comfortable working in agile , cross-functional teams Analytical mindset and strong troubleshooting skills Position Details Role : Full-time Experience : 5 years across backend and frontend development Languages : English (corporate language)

Location: Valencia, Valencian Community, ES

Posted Date: 8/2/2025