Senior BI Developer

NTT Data; Cape Town; On-site; ZAR 300 000 - 600 000; Full time

Job summary

An established industry player is on the lookout for a talented BI Specialist to enhance their data-driven decision-making processes. In this role, you will leverage your expertise in the Microsoft BI stack, particularly Power BI, to design and develop insightful dashboards and reports. Your responsibilities will include building robust data models, ensuring data integrity, and collaborating with stakeholders to translate complex datasets into actionable insights. This position offers a dynamic environment where your contributions will directly influence strategic initiatives, making it an exciting opportunity for those passionate about data and analytics.

Qualifications

• 3-5 years of BI development experience, especially in Power BI.
• Strong proficiency in data modeling, DAX, and Power Query.

Responsibilities

• Design and develop Power BI dashboards and reports based on business needs.
• Ensure data quality and maintain the Power BI service environment.

Skills

Power BI Development

DAX

Power Query

SQL Server

Data Warehousing

ETL Processes

Azure Data Services

Problem-Solving

Agile/Scrum

Education

Bachelor's Degree in Computer Science

Bachelor's Degree in Information Systems

Bachelor's Degree in Data Science

Tools

Power BI

SQL Server

Azure Data Factory

SSAS

SSIS

Job description

Job Purpose:

We are seeking a highly skilled BI Specialist with strong expertise in the Microsoft BI stack, particularly Power BI, to design, develop, and maintain robust data models and visualizations that support strategic and operational decision-making. The ideal candidate will have deep knowledge of data modeling, DAX, Power Query, and integration with data sources such as SQL Server, Azure, and Excel.

Key Responsibilities:

1. Design, develop, and deploy Power BI dashboards and reports tailored to business needs.
2. Build and optimize data models using DAX and Power Query for performance and scalability.
3. Translate business requirements into technical solutions leveraging the Microsoft BI stack (Power BI, SSAS, SQL Server, Azure Data Services).
4. Collaborate with stakeholders to understand data needs and deliver actionable insights.
5. Maintain and enhance the Power BI service environment including workspaces, datasets, and scheduled refreshes.
6. Develop and document ETL processes using Power Query, SQL, or Azure Data Factory.
7. Ensure data quality, integrity, and consistency across reports and data sources.
8. Monitor report performance and conduct ongoing tuning to ensure efficiency.
9. Train and support business users in Power BI usage and self-service analytics.

Key Skills & Competencies:

1. Advanced Power BI development (Dashboards, Reports, DAX, Power Query).
2. Strong proficiency with Microsoft SQL Server (T-SQL, views, stored procedures).
3. Solid understanding of data warehousing, dimensional modeling, and ETL processes.
4. Familiarity with Azure Data Services (e.g., Azure Synapse, Azure Data Lake, Azure SQL, Data Factory) is highly desirable.
5. Knowledge of SSAS (Tabular models) and SSIS is advantageous.
6. Ability to translate complex datasets into intuitive visualizations and narratives.
7. Strong problem-solving, critical thinking, and communication skills.
8. Experience with Agile/Scrum methodologies is a plus.

Qualifications & Experience:

1. Bachelors degree in Computer Science, Information Systems, Data Science, or related field.
2. Minimum of 3-5 years of experience in BI development, with a focus on Power BI.
3. Microsoft certifications (e.g., PL-300, DP-500, or equivalent) are advantageous.
4. Experience working with cross-functional teams in a data-driven environment.