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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Middle Software Engineer (Php) - **Company:** Xsolla - **Location:** Marín, Spain - **Salary:** €16,000.0 - €22,000.0 - **Contract:** Permanent contract - **Skills:** PHP (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Automation of Tests, Big Data, Code Review, Continuous Integration, Database Design, Software Design Patterns, Programming Tools, Monitoring of Systems, Object-Oriented Software Development, Systems Architecture, Systems Integration, Datadog, Postman, Backend, Gitlab, Event Driven Architecture, Single Page Application, Gitlab-ci, Front End Software Development, Kibana, Microservices - **Published:** September 20, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role Proven experience in backend development with strong proficiency inPHPandGoLang. Solid understanding of object-oriented programming (OOP), software design patterns, and decomposition principles. Experience with microservices architecture and scalable backend systems. Strong knowledge ofSQLand database design, including optimization for large datasets. Familiarity with Postman, GitLab, console and other development tools. Experience using monitoring and testing tools such asGrafana,Kibana, DataDog andELK. Ability to work independently on complex technical tasks and deliver high-quality results within deadlines. Strong communication skills and ability to collaborate effectively with cross-functional teams. Experience with high-load systems and event-driven architectures. Familiarity with CI/CD tools (GitLab CI). Background in frontend development or working with single-page applications (SPAs). Hands-on experience using AI-powered development tools to enhance productivity. ## Description Design, build, and maintain backend services and APIs usingPHPandGo, ensuring scalability, reliability, and high performance. Develop new microservices and enhance existing systems to support large-scale integrations and high-load payment flows. Participate in code reviews and maintain high development standards through collaborative feedback and best practices. Work closely with engineering, product, and partner teams to deliver high-quality solutions on schedule. Contribute to system monitoring using tools such asGrafana,Kibana, andELKto ensure stability and optimal performance. Document technical specifications, system architecture, and new functionalities for transparency and maintainability. Participate in Kanban ceremonies and maintain efficient communication with cross-functional teams., The duties and responsibilities of this position may evolve over time to support the organization's goals and individual growth. This job description is intended to outline the general nature and level of work being performed and is not intended to be an exhaustive list of all duties, responsibilities, and qualifications required. By submitting your application, you consent to Xsolla conducting background checks, where permitted by law, after the final interview stage. All checks will comply with local regulations, and your information will be handled confidentially. Xsolla takes your privacy seriously and will not sell or externally distribute any personal data received during the hiring process. In accordance with applicable data protection laws, Xsolla is committed to protecting your personal information and respecting your privacy. 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