Backend Developer (Mid-Level) Location: Fully Remote Rate: €200–€320 per day DOE Start: ASAP Contract: Open-ended Overview We are looking for a Mid-Level Backend Developer to join a high-performing engineering team working on scalable, high-traffic systems. You will play a key role in building and maintaining robust backend services, contributing to architectural decisions, and improving existing platforms. This role requires strong PHP and Laravel experience, along with a solid understanding of modern backend principles, distributed systems, and clean architecture. Key Responsibilities • Design and develop scalable, secure, and high-performance backend systems • Build and maintain RESTful APIs connecting frontend applications, databases, and third-party services • Develop backend services using PHP and Laravel within modern architectures • Apply clean architecture principles, SOLID practices, and maintain high code quality • Work with relational and non-relational databases such as MySQL, PostgreSQL, and Redis • Contribute to microservices-based systems using Docker and containerised environments • Refactor and improve legacy codebases for performance and maintainability • Implement unit and integration testing to ensure reliability • Collaborate with Product, Design, QA, and DevOps teams to deliver end-to-end solutions • Participate in code reviews and contribute to engineering best practices Requirements • 4+ years of backend development experience with strong PHP and Laravel expertise • Experience building and scaling applications in high-traffic environments • Strong understanding of clean architecture, DDD, and SOLID principles • Experience working with microservices and distributed systems • Hands-on experience with Docker and modern development workflows • Strong knowledge of MySQL or PostgreSQL • Experience with NoSQL technologies such as Redis, MongoDB, or Elasticsearch • Familiarity with message brokers such as RabbitMQ or Kafka • Experience with testing practices such as TDD and unit testing • Strong experience with Git and version control workflows • Experience working with Composer and PHP tooling (PHPStan, PHPMD) Nice to Have • Experience working with AI tools or building AI-driven features • Exposure to CQRS patterns • Experience integrating with complex third-party APIs Communication Requirements • Conversational Spanish required • Intermediate English required Process • Two-stage interview process • Fully remote role