Crossjoin Solutions, founded in 2009, is a Portuguese IT company serving over 30 clients across Europe, Latin America, and North America. Through our services, we support tens of millions of consumers in numerous countries worldwide.. We provide consulting services across a broad range of sectors reliant on information systems, including banking, insurance, healthcare, automotive, finance, and telecommunications. Our expertise covers end-to-end performance optimization, enterprise testing, major incident troubleshooting and resolution, full-stack architecture advisory, continuous integration, deployment acceleration, and infrastructure managed services. You will be integrated in our Academy! At this Academy, you will be challenged with intensive training, both theoretical and in realistic labs, so you can be ready for Crossjoin's projects. Here, you’ll not only sharpen your technical abilities but also refine your soft skills, preparing you to face real-world challenges. Requirements: * Bachelor’s or Master’s degree in Computer Science or a related field * No prior professional experience required * Strong resilience in problem-solving and performing under pressure * High level of autonomy and sense of responsibility * Excellent organizational and time management skills * Effective communication skills Responsabilities: * Install, configure, upgrade, maintain and Administrate open-source databases (PostgreSQL, MySQL/MariaDB, ElasticSearch, MongoDB, etc.). * Ensure high availability, backups, replication, and disaster recovery. * Monitor performance, tune queries. * Apply security patches, manage access, and enforce data protection. * Automate routine tasks and maintain monitoring/alerting systems. * Document environments, procedures, and best practices. * Evaluate and implement improvements for reliability, scalability, and cost. We offer: * Health Insurance (also available for your immediate family) * Crosser Assistance Program (support in psychology, psychosocial, financial, legal, and nutrition matters) * Structured Individual Development Plan (IDP) * Transparent company-wide Career Plan * Monthly gym subscription * Regular team-building events Ready to kick off your career as a Junior Database Administrator? Join us at Crossjoin Solutions and become part of an ambitious and supportive team! With the submission of your application you authorise the treatment and storage of your personal data within Crossjoin Solutions, Lda database for this recruitment process and/or other future opportunities.