Power BI Software Developer (Freelance)

We're looking for a Power BI Software Developer to support a key operational reporting initiative.

You will join the team responsible for the Technical Equipment Mission Report (TEMR) platform, a mission-critical system used to monitor patrol activities, incidents, deployed teams, and operational resource utilization.

📍 Location: Warsaw, Poland (Hybrid: up to 2 remote days/week)

📅 Duration: Up to 41 months (initial 12-month contract + extensions)

✅ What you'll do?

• Develop end-to-end Power BI solutions
• Build dashboards, reports, and data models
• Create DAX measures and Power Query transformations
• Optimize BI performance and SQL queries
• Develop and maintain Microsoft SQL Server solutions (T-SQL)
• Integrate REST APIs and external data sources
• Implement RLS and OLS security models
• Collaborate with business stakeholders and operations teams
• Work in an Agile development environment

✔ What we're looking for?

• Minimum 4 years of IT experience
• Minimum 2 years in Power BI development/support
• Strong Power BI, DAX, Power Query (M), and SQL Server skills
• Experience with dashboards, data models, and paginated reports
• English level B2 or higher
• Relevant software development certification

⭐ Nice to Have

Azure DevOps & Git

REST/HTTP APIs

Advanced SQL optimization & Query Folding

UML and software design experience

Scrum/Agile environment experience

Technical leadership capabilities