Power BI Software Developer (Freelance)

Aricoma; Warszawa; Hybrid; PLN 120,000 - 180,000; Full time

Job summary

Aricoma in Warsaw is seeking a Power BI Software Developer to support the TEMR reporting initiative. You will join a team responsible for the Technical Equipment Mission Report platform, a mission-critical system that monitors patrol activities, incidents, deployed teams, and resource utilization.

The role is hybrid in Warsaw with up to 2 remote days per week, and the contract spans up to 41 months. You will develop end-to-end Power BI solutions, dashboards, data models, and SQL-based data

Qualifications

• 4+ years IT experience
• 2+ years in Power BI development
• 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

Responsibilities

• 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

Skills

Power BI

DAX

Power Query

SQL Server

REST APIs

English (B2)

Education

Software development certification

Tools

Azure DevOps

Git

Job description

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