Hire a BI consultant
BI specialists at Data Science Lab build reports in your own environment so everyone sees the same figures, as at Ammega.
We built Power BI dashboards and an app for Ammega, working with stakeholders across the organisation
Ammega wanted better insight into its business processes and finances. We developed several Power BI dashboards and a Power BI app for management, planning and finance, reducing the number of separate Excel files and creating a single source of truth.
Why do two of our reports show different revenue figures?
Finance and sales each have their own report with their own formulas. The monthly figures differ, and the colleague who built the model has left. A BI specialist from our team brings everything together in a single model, in your environment and with version control.
The BI specialist you hire depends on your tool and your data
Power BI specialist
Builds semantic models, DAX measures and reports in Power BI, like the dashboards and Power BI app we developed for Ammega.
Qlik or Tableau specialist
Works with the tool you already use, like the Qlik dashboards on Snowflake that Athlon’s asset management team uses to track tyre wear.
Analytics engineer
Defines the metrics behind reports in tested data models using dbt, as we did for the data platform with Power BI that we built for Vivara.
Python dashboard developer
Builds a web application with Dash when a standard tool isn’t enough, like the BACE-next KPI dashboard for Fokker Services Group.
An introductory meeting about your own reports comes before any decision
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Reports and sources
We discuss which reports you have, where the data comes from, which tool they use and who manages them.
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Profiles and introductions
We introduce you to colleagues with experience in your tool. You can speak to them with no obligation and decide for yourself.
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Building together and documenting
The specialist works in your environment and backlog. The model, measures and definitions are then kept under version control.
When is an external BI specialist the right choice for us?
A good fit if
Your team already uses Power BI, Qlik or Tableau, but lacks capacity or expertise in data models, DAX or management during a migration, a busy period or staff leave.
Not a good fit if
The data sources are not yet accessible or no one owns the definitions. In that case, data engineering, data governance or a completed BI project is the better first step.
Duration and rate
There is no fixed minimum or maximum duration. The rate depends on the expertise required, the specialist’s experience and the length of the assignment.
An employee, not a freelancer
The BI specialist has an employment contract with Data Science Lab. Selection, onboarding and follow-up are handled through one point of contact. Check your own policy on hiring external staff with HR, procurement or an adviser.
Hire a BI specialist, commission a reporting solution or recruit someone yourself?
Hire a BI specialist
Choose this if your team will retain ownership of the reports but lacks expertise in models or DAX. We recommend it when that knowledge needs to stay within your team.
Commission it as a project
Choose this if you want a ready-to-use reporting environment, with one provider handling the design and delivery. See business intelligence.
Recruit someone yourself
Choose this if reporting is an ongoing need and the expertise needs to stay in-house. Our specialist can establish the way of working and help your new colleague get up to speed.
Our BI specialists can draw on colleagues in data engineering and data science
Data Science Lab has worked with data and AI since 2016 and is a Microsoft Partner for Fabric. Our BI specialists share knowledge with colleagues in our internal lab and at Techdays.

Your reports and data sources are the focus of our first conversation
Stef Stoelwinder
Business DevelopmentStef is your first point of contact. In our first conversation, we’ll discuss your reports, data sources and team, and what kind of profile would be the right fit.
E-mail info@datasciencelab.nl
Phone +31 (0)20 3636 724
Which of our reports need to be more reliable?
Tell us which tool, data sources and reports are involved. We’ll reply by email or arrange an initial conversation.
Message sent
Thanks for your message. We’ll be in touch as soon as possible.
Frequently asked questions
A BI consultant turns source data into reports you can use to make decisions. In Power BI, that means preparing data with Power Query, building a semantic model, defining calculations as DAX measures and creating reports for the people who use them.
On our staffing page, we call this role a BI specialist, alongside roles such as analytics engineer and data engineer. The right colleague depends on your tools and data.
A data engineer ensures data from source systems reaches the platform reliably, using pipelines and a data warehouse or lakehouse. The BI consultant then builds the model, definitions and reports on top of it.
If your sources are not yet accessible, you first need a data engineer. For large data volumes, Microsoft also recommends building a data warehouse first and connecting the Power BI model to it.
Because every visual in a report sends a query to the semantic model. Microsoft therefore recommends a star schema: dimension tables, such as customer, product and date, for filtering and grouping, and fact tables containing transactions for aggregation.
A model that mixes the two becomes slow and difficult to use. Explicit DAX measures also ensure everyone calculates revenue or margin in the same way.
With row-level security in the semantic model. You define roles using DAX filters, for example by region, and assign users or security groups from Microsoft Entra ID in the Power BI service. You can use "Test as role" to check what someone sees.
Note that this security applies only to users with the Viewer role. Anyone with higher permissions in the workspace can see all the data. The specialist agrees on this with your administrator before reports are shared widely.
By saving the work as a Power BI project (PBIP). The model and report are then stored as readable text files in Git, with version history and review. Deployment pipelines in Fabric move new content from development through testing to production, rather than sending it straight to users.
We document definitions of terms such as revenue or active customer in a place your team knows. We hand over knowledge when you want us to, not just at the end.
That depends on where the content is hosted. With a Fabric (Free) licence, you can only create reports for your own use. Sharing and collaborating requires a Pro or Premium Per User licence, unless the workspace runs on Premium or Fabric capacity. In that case, colleagues without a paid licence can also view the content.
Anyone who publishes reports, including the hired specialist, needs a Pro or PPU licence in your tenant.
Our BI specialists are employed by Data Science Lab, which assigns them to clients. You have one point of contact for selection, onboarding and follow-up, and the specialist can draw on colleagues in data engineering and data science.
With a freelancer, you assess their quality yourself. Since 1 January 2025, the Belastingdienst has resumed enforcement against false self-employment. As the client, you are responsible for determining whether the assignment is suitable for a self-employed professional.
If you want a completed report rather than extra capacity, have Power BI dashboards built as a project. If the problem lies with definitions or data ownership, another report will do little to help; start with data governance instead. If the work is ongoing, hire someone directly.
Want to compare providers first? See our overview of data analytics consultancies.
Would you rather have a reporting environment delivered than hire someone?
- SecondmentAll the data and AI roles we provide on secondment, and how selection and placement work.
- Business intelligenceIf you want dashboards and reports developed as a project, built on a single reliable data foundation.
- Power BI dashboardsHow we build a dashboard around the decision it needs to support.