Backend Developer (Mid Level)Location: RemoteRate: €200 to €300 per day DOEStart: ASAPContract: Open-ended Para una comprensión completa de esta posibilidad y de lo que se requerirá para ser un candidato exitoso, siga leyendo. We are looking for a Backend Developer (Mid Level) to join a high-performing engineering team working on scalable, modern web applications. This role is ideal for someone with strong PHP and Symfony experience who enjoys building clean, well-structured systems and working in a collaborative, product-driven environment.Please note: Fluent Spanish is required for this role.The roleYou will be responsible for designing and building backend services that power user-facing applications and internal systems. You will work closely with product, design, and engineering teams to deliver reliable, scalable, and high-quality solutions.Responsibilities- Build and maintain backend systems using PHP 8 and Symfony- Design and develop scalable APIs and services- Apply best practices in software design including design patterns and clean architecture- Contribute to system design using Domain Driven Design and structured architectural approaches- Work with AWS services including Lambda and messaging systems such as SNS and SQS- Develop and maintain integrations with third-party services- Write clean, maintainable, and well-documented code- Implement unit and integration testing using PHPUnit- Contribute to test automation using modern tools such as Playwright- Work with relational and NoSQL databases including MariaDB, Redis, and MongoDB- Use modern ORM tools such as Doctrine or Eloquent- Collaborate on CI/CD pipelines and support smooth deployment processes- Participate in code reviews and contribute to continuous improvementRequirements- Commercial experience with PHP 8+ and Symfony (ideally Symfony 6)- Experience building and maintaining production web applications- Hands-on experience with AWS, particularly Lambda and SNS or SQS- Strong understanding of software design principles and architecture patterns- Familiarity with Domain Driven Design and clean or hexagonal architecture- Experience with Node.Js in a backend or supporting capacity- Strong SQL skills and experience with xbhjioe both relational and NoSQL databases- Experience working with Docker and containerised environments- Experience with automated testing including PHPUnit- Familiarity with CI/CD workflows and modern development practices- Fluent Spanish is essentialNice to have- Experience with OpenSearch or Elasticsearch- Experience with Playwright or advanced automation testing- Experience working in event-driven or microservices architecturesWhat we are looking for- Engineers who take ownership and deliver high-quality solutions- Strong problem solvers with attention to detail- Comfortable working in cross-functional teams- Clear communicators who can explain technical decisions