Hire a BI developer

• Designs semantic models (star schemas, measures, relationships) that one definition of each metric lives in.
• Builds dashboards that answer specific decisions, not every possible question.
• Writes DAX, LookML or Tableau calculations that perform at scale.
• Sets up refresh, row-level security, workspaces and deployment between dev and production.
• Runs governed self-service: certified datasets, naming, documentation, retiring unused reports.
• Works with data and analytics engineers on the upstream models.

• Two dashboards show different revenue.
• A simple report change takes a week.
• Refreshes fail or dashboards take ages to load.
• You're migrating BI tools (for example to Power BI or Fabric, or from Tableau to Looker).
• Nobody knows which of hundreds of reports are still used.

• Starts from the decision and the user, then designs the model.
• Keeps logic in the model, not copied into every visual.
• Knows performance: model size, query folding, aggregations, extracts vs live.
• Retires reports as readily as building them.

• "Finance and sales report different revenue in two dashboards. How do you fix it?" Strong: traces both definitions to source, agrees one with owners, moves it into a shared semantic model or certified dataset, retires the duplicate.
• "This Power BI report takes 30 seconds to load. Where do you look?" Strong: Performance Analyzer, DAX Studio, model size and cardinality, bi-directional relationships, iterators over large tables, DirectQuery vs Import, aggregations.
• "Explain CALCULATE and context transition" (Power BI) or "LOD expressions" (Tableau) or "how you structure LookML views and explores" (Looker).
• "How do you set up row-level security for regional managers?" Strong: role tables, dynamic RLS from user identity, testing as the user.
• "How do you deploy changes without breaking reports people rely on?" Strong: dev/test/prod workspaces or Git integration, deployment pipelines, communication.

• Builds visuals first and the model later.
• Copies the same measure into ten reports.
• Can't explain why a report is slow.

Power BI (DAX, Power Query, Fabric) · Tableau (LOD, Prep, Server/Cloud) · Looker (LookML) · Looker Studio · Qlik · SQL · dbt for upstream models · Snowflake / BigQuery / Databricks / SQL Server. Hiring for Power BI specifically? See hire a Power BI developer.

Option 1: post a role. Post your role free: permanent, contract or fractional; remote or on-site; the country and your overlap hours. See applicants ranked by fit. Vetted profiles show a vetting report from Carbon's real-world data experience test (scenario-based, not a coding test), a working-style profile and a short video intro. Interview with a guide tailored to the role and the candidate, then agree the rate, draft the contract and sign on the platform. Option 2: test someone you found. Already have a candidate? Test a candidate you found on Carbon before you make an offer. ID checks are available on Team and Scale.