Backend Developer (Mid-Level)Location: Fully Remote Rate:€200–€320 per day DOE Start: ASAP Contract: Open-ended
OverviewWe 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 My SQL, Postgre SQL, 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 Dev Ops teams to deliver end-to-end solutions
- Participate in code reviews and contribute to engineering best practicesRequirements- 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 My SQL or Postgre SQL
- Experience with No SQL technologies such as Redis, Mongo DB, or Elasticsearch
- Familiarity with message brokers such as Rabbit MQ or Kafka
- Experience with testing

📌 Back End Developer (Madrid)
🏢 La Fosse
📍 Madrid