Perhaps you need cubes for ad-hoc, real-time analysis? Or a report package for everyday follow-up, distributed and shared in your organization? Or someone that can show you what could be achieved with modern BI-tools?
I work with multiple techniques, but have a strong focus on Microsoft, both on-prem and Azure solutions. I am certified within Microsoft Business Intelligence and SQL Server and work with SSAS, SSIS, SSRS, Power BI on a nearly daily basis.
Besides that, I am familiar with using tools such as Informatica Power Center, Cognos or Oracle DB.
Depending on your needs;
I choose the most optimal technique to get the job done.