Senior Data Analyst

Company Description Sia is a next-generation global management consulting group Founded in 1999 we were born digital Today our strategy and management capabilities are augmented by data science enhanced by creativity and driven by responsibility We re optimists for change and we help clients initiate navigate and benefit from transformation We believe optimism is a force multiplier helping clients to mitigate downside and maximize opportunity With expertise across a broad range of sectors and services our 3 000 consultants serve clients worldwide from 48 locations in 19 countries Our expertise delivers results Our optimism transforms outcomes We are hiring a Power BI Developer to support our global internal teams Finance HR Strategy Corporate Functions by maintaining improving and delivering high-impact business intelligence dashboards datasets and analytics solutions This role is critical for strengthening our internal reporting systems and driving data-backed decision-making across the organization Key Responsibilities Lead the design implementation and upkeep of ETL data pipelines from source files through staging layers into the DWH ensuring data correctness and efficiency Architect and evolve semantic models reusable datasets define dimensions hierarchies and KPI definitions that align with business needs Build review and optimize complex SQL-based transformations and views that feed into dashboards and reports Develop optimize and maintain all aspects of Power BI dashboards DAX measures visuals and UXUI design Power Query M security through RLS OLS and access rights report publication and refresh Lead and manage complete BI projects with Corporate teams from Business requirement to delivery thus including requirements gathering scoping estimating work and timeline designing specs developing validating with business stakeholders deploying and monitoring in production Identify performance bottlenecks in SQL queries or the data model and optimize query speed resource usage and refresh times to improve user experience Maintain and initiate documentation of data schema data lineage dashboards and datasets QA and perform tests validation to ensure data integrity Mentor junior analysts raise and enforce standards and best practices in SQL data modelling and BI development Qualifications Bachelor s or Master s in Computer Science Data Analytics Information Systems Statistics or a related field 5-8 years in analytics BI roles with strong exposure to the Microsoft Power BI Suite Deep hands-on experience in SQL complex joins aggregations window functions subqueries optimizations Solid experience with Power BI semantic modelling DAX Power Query M report dashboard design RLS publishing Understanding of data warehousing ETL architecture ODS staging fact dimension layers Demonstrated ability to work on end-to-end projects gathering requirements specifying implementing testing and monitoring dashboards Strong communication skills ability to engage with both technical and non-technical international audiences Proven problem solving and performance tuning skills recognizing bottlenecks refactoring models or queries as needed Certifications Mandatory PL-300 Microsoft Certified Data Analyst Associate Preferred PL-200 Power Platform Functional Consultant or PL-600 Power Platform Solution Nice to Have Experience in cloud analytics environments Azure preferred Familiarity with tools enhancing BI model maintenance Tabular Editor DAX Studio ALM version control for BI assets Additional Information Sia is an equal opportunity employer All aspects of employment including hiring promotion remuneration or discipline are based solely on performance competence conduct or business needs Sia is an equal opportunity employer All aspects of employment including hiring promotion remuneration or discipline are based solely on performance competence conduct or business needs