Power BI Developer

Cognizant Technology Solutions Corporation; Greater London; On-site; GBP 40,000 - 60,000; Full time

Job summary

A global technology consulting firm in the United Kingdom seeks a Power BI Developer to design and maintain interactive dashboards and reports. The ideal candidate will have extensive experience with Power BI, including proficiency in DAX and Power Query. Responsibilities include validating data accuracy and documenting data flows. This is an excellent opportunity for SC Cleared candidates looking to work in a supportive Agile environment.

Qualifications

• Strong experience developing dashboards and data models in Power BI.
• Proficiency in DAX, Power Query (M), and data modelling best practices.
• Experience in structured software testing methodologies.

Responsibilities

• Design, develop, and maintain interactive Power BI dashboards.
• Validate data accuracy and identify defects.
• Produce structured test reports summarising test results.

Skills

Power BI

DAX

Power Query (M)

SQL

Data Modelling

Software testing

Job description

Excellent opportunity for Power BI Developer be part of QEA Practice , role requires SC Cleared candidates .

Responsibilities

• Design, develop, and maintain interactive Power BI dashboards, reports, and data models.
• Build efficient data transformations using Power Query (M) and DAX calculations.
• Optimise data models for performance, scalability, and usability.
• Collaborate with business stakeholders to translate requirements into effective BI solutions.
• Implement row‑level security, data refresh schedules, and workspace management.

Quality Assurance

• Validate data accuracy by comparing source data with transformed and visualised outputs.
• Identify defects, inconsistencies, and data quality issues, and resolve them.

Test Reporting & Documentation

• Produce clear, structured test reports summarising test results, defects, and quality metrics.
• Document data flows, business rules, and dashboard logic.
• Maintain version control and change‑tracking documentation for BI assets.

Required Skills & Experience

• Strong experience developing dashboards and data models in Power BI.
• Experience in BI development.
• Proficiency in DAX, Power Query (M), and data modelling best practices.
• Experience in Data Modelling and DAX.
• Solid understanding of SQL and relational databases.
• Experience in structured software testing methodologies.
• Experience in Software testing and testing KPI’s.
• Ability to create test plans, test cases, and detailed test reports.
• Strong analytical mindset with attention to detail and data accuracy.
• Experience working in Agile or hybrid delivery environments.