Job Title:Senior BI Developer (Microsoft Stack)Location:Lisbon, PortugalWork Regime:Full-time & Hybrid (2x office days)Overview / Summary:We are looking for a Senior Business Intelligence Specialist with extensive experience in the Microsoft SQL ecosystem, responsible for designing, developing, maintaining, and optimizing corporate BI solutions, ensuring data quality, performance, security, and reliability.Responsibilities and Tasks:Design, develop, maintain, and optimize corporate BI solutions, ensuring data quality, performance, security, and reliability across the Microsoft SQL ecosystem.Define end-to-end BI architectures and build complex data models using relational and dimensional modeling (Star Schema / Snowflake).Develop ETL/ELT processes with SSIS and analytical models with SSAS (Multidimensional and Tabular), including DAX and MDX.Create reports and dashboards in SSRS and Power BI, implementing security and access control (including RLS).Perform performance tuning and monitoring (SQL code, indexes, execution plans) and support Development, Testing, and Production environments.Produce technical documentation, enforce data governance, gather business requirements, translate them into technical solutions, and communicate with stakeholders.Participate in critical, high-complexity projects and provide technical leadership and mentoring.RequirementsMandatory Requirements:Bachelor's or Master's degree in Computer Science, Engineering, Applied Mathematics, Data Science, or related fields+5 years of proven experience in BI projectsExperience with Microsoft SQL Server (2016–2022)Advanced T‐SQL skills (complex queries, optimization, tuning)Experience in relational and dimensional modeling (Star Schema / Snowflake)Proficiency in SSIS (ETL/ELT processes)Experience in SSAS (Multidimensional and Tabular)Proficiency in DAX and MDXExperience with SSRS and Power BI (modeling, dashboards, RLS)Strong knowledge of performance optimization and monitoringExperience in implementing security and access controlProven ability to support multiple environments (Development, Testing, Production)Strong communication skills with both technical and functional stakeholdersComplementary Requirements:Microsoft certifications in Data, BI, or Analytics (preferred)Experience in data governance and technical documentationExperience in high-complexity or critical BI projectsTechnical leadership and mentoring experienceBenefitsImportantOur company does not sponsor work visas or work permits. All applicants must have the legal right to work in the country where the position is based.Only candidates who meet the required qualifications and match the profile requested by our clients will be contacted.#Visionary Future - Build the future, join our living ecosystem!