Backend Engineer

Backend Engineer

Holaluz

Barcelona, Spain

Are you passionate about solid software architecture and seeking challenges in large-scale projects?

Join our team as a Backend Engineer and contribute to the construction of innovative technological solutions. You will develop robust and scalable backends, applying SOLID principles, DDD, and hexagonal architecture.

Key Responsibilities:

Design and Development:

• Design and develop scalable and maintainable backends using SOLID and DDD principles;
• Model domain entities and objects, applying appropriate naming and design patterns;
• Implement RESTful APIs following best practices and ensuring clear documentation;
• Utilize dependency management tools (Composer, Maven, Gradle) to manage libraries and frameworks.

Testing:

• Write comprehensive unit and integration tests to ensure code quality;
• Practice TDD to ensure agile and high-quality development.

Architecture:

• Implement hexagonal architectures to separate business logic from infrastructure;
• Work with distributed systems, using Docker to containerize applications;
• Interact with relational and non-relational databases, optimizing data access;
• Implement asynchronous communication solutions using queues and events.

Cloud:

• Deploy applications to the cloud using platforms like AWS, Azure, or Google Cloud;
• Explore and utilize serverless services to optimize costs and scalability.

Collaboration:

• Collaborate closely with the product development team and other stakeholders;
• Effectively communicate technical decisions and project progress.

Maintenance and Improvement:

• Perform continuous refactoring to improve code quality and architecture;
• Implement robust logging and exception handling mechanisms.

Requirements:

Solid knowledge of:

• At least one backend programming language (Java, Python, Node.js, etc.);
• Relational (MySQL, PostgreSQL) and non-relational databases;
• SOLID principles, DDD, hexagonal architecture, and design patterns;
• TDD and BDD;
• Docker and container orchestration;
• Cloud computing (AWS);
• RESTful APIs.

Experience in:

• Microservices development;
• Distributed systems;
• Asynchronous communication;
• DevOps and CI/CD.

Soft skills:

• Effective communication;
• Teamwork;
• Proactivity and problem-solving skills.

Valued:

• Knowledge of other programming languages (scripting and compiled);
• Experience with serverless systems;
• Contributions to open source projects;
• Advanced English.

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