Power BI developer jobs on carbon.talent, for specialists in Microsoft's reporting stack: data modelling, DAX, Power Query, report design and the service that publishes it all. Power BI roles are common in finance, operations and public-sector organisations that run on Microsoft, and many are offered on contract. This guide covers the specific skills Power BI interviews test, how Microsoft Fabric is changing the role, and how to stand out among a large pool of candidates.
Verzuimdata B.V. · Ridderkerk · Contract · Posted 2026-10-28
robusta · Remote · Full-time · Posted 2026-10-19
Equum Medical · Remote · Full-time · Posted 2026-10-18
Power BI work splits into four layers. Power Query handles getting and shaping data. The data model holds tables, relationships and measures. DAX defines calculations. Reports and the Power BI service handle presentation, sharing, refresh and security. Junior roles focus on reports; senior roles are judged on modelling, DAX and service administration. Read each listing for which layers it emphasises.
DAX is where interviews get specific. Expect questions on filter context and row context, CALCULATE and how it modifies filters, time intelligence functions, and why a measure gives a different total from the sum of its rows. Being able to explain these concepts clearly, not just write formulas that work, is what interviewers look for. Practise talking through a measure line by line.
Modelling questions focus on star schemas, relationship direction and cardinality, avoiding bidirectional filters where they cause ambiguity, and keeping models small enough to perform. You may be asked how you would reduce a slow model's size, which points to removing unused columns, reducing cardinality, choosing the right storage mode and moving logic upstream into the source or Power Query.
The service side matters in senior roles: workspaces, apps, deployment pipelines, row-level and object-level security, gateways for on-premise data, refresh scheduling and capacity management. Organisations with many reports need someone who can govern them. Experience setting up workspace standards or certified datasets is a strong differentiator.
Microsoft Fabric brings lakehouses, warehouses, pipelines and notebooks into the same environment as Power BI. Listings increasingly mention Fabric, OneLake and Direct Lake mode. You do not need to be an expert, but understanding how Fabric changes where data is stored and transformed shows you are keeping up with the platform your employer is likely to adopt.
Because Power BI is so widely used, the candidate pool is large. Stand out with depth and proof. Share a public report built on open data with a clean model and well-named measures, or a short write-up of a performance problem you solved. Microsoft's PL-300 certification is commonly requested in listings; it helps you pass screens, but practical examples carry more weight in interviews.
Contract Power BI roles are plentiful, especially for migrations from Excel or other BI tools, rebuilding reports after a finance system change, and governance clean-ups. Many contractors package their offer around a specific outcome, such as a finance reporting suite or a model performance review. Remote Power BI roles usually expect overlap with the business users who rely on the reports.
Questions to ask: which licences and capacity the organisation uses, whether there are deployment pipelines, who owns the semantic models, and how many reports are in active use. The answers indicate how much of the job is building and how much is tidying up.
Common mistakes in Power BI roles include writing every calculation as a calculated column instead of a measure, importing far more data than reports need, using bidirectional relationships by default and publishing reports from personal workspaces. Interviewers often ask about these directly. Showing that you know why each causes problems, and what you do instead, signals real production experience.
Questions worth asking an employer: which licensing model they use, whether they have moved to Fabric, how deployment pipelines are set up, who administers the tenant and how many workspaces exist. The answers tell you whether the role is mostly building reports, mostly governance or a mix.
Power BI developers who also understand the finance calendar, budgeting and forecasting processes are especially valued, because finance teams are often the largest users. Learning how month-end close works in your organisation helps you anticipate requests and design reports that fit reporting deadlines rather than fighting them.
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Power Query, data modelling, DAX, report design and Power BI service administration including security, refresh and deployment. Strong SQL helps.
Many listings ask for it, and it helps with screening. Practical examples of models and DAX you have written matter more in interviews.
Fabric brings data engineering and storage into the same environment. Employers adopting it look for Power BI developers who understand lakehouses and Direct Lake mode.
Yes, many, especially for migrations, finance reporting rebuilds and governance projects.