Junior Tableau BI Developer — Data Modernization

Halvik

Vienna (VA)

On-site

USD 85,000 - 125,000

Full time

14 days+

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Benefits offered by this job

Medical, dental, vision, life, STD, &L

11 federal holidays and PTO

Performance-based incentives

401(k) with company matching

Flexible Spending Accounts

Tuition Assistance

Charitable Contribution matching

Job summary

Halvik is seeking BI Developers to support a high-visibility federal data modernization program at the U.S. Department of Transportation.

The role focuses on converting thousands of legacy Oracle/OBIEE reports into Tableau workbooks and dashboards on a Databricks Lakehouse. You will execute a repeatable conversion process, develop Tableau views, validate outputs, and collaborate in an Agile team with Data Engineers, QA, and Analysts.

Qualifications

BS degree in Computer Science, Data Analytics, Information Systems, Business Analytics, Engineering, Mathematics, Statistics, or a related discipline.
1–3 years of hands-on Tableau development experience, including dashboards, calculated fields, filters, parameters, and data source connections. Academic project experience considered for candidates with strong fundamentals.
Solid SQL skills. Comfortable writing validation queries against large datasets.
Understanding of data warehouse concepts - dimensional models, fact and dimension tables, data marts, ETL concepts.
Exposure to Databricks, Spark SQL, or comparable cloud data platforms. Hands-on experience preferred; conceptual understanding with willingness to learn quickly is acceptable.
Comfort using AI/LLM tools in a professional or academic context - code generation, data analysis, or similar applications.
Strong attention to detail and ability to follow established processes consistently across high-volume work.
Effective working in Agile team environments.
Must be eligible to obtain and maintain Public Trust security clearance.

Responsibilities

Execute the established report conversion process - either refining pre-generated Tableau report scaffolds or performing manual conversion following documented procedures.
Build, modify, and publish Tableau workbooks, dashboards, calculated fields, filters, and parameters following established templates and naming conventions.
Apply performance best practices (context filters, extract optimization, data source filters) under senior developer guidance.
Handle template-conforming reports independently. Escalate complex reports to the Senior BI Developer for input and guidance.
Validate converted report outputs, confirm source-to-target fidelity, and troubleshoot discrepancies.
Perform QA self-checks using established validation checklists.
Navigate Databricks workspace to locate tables, review schemas, and understand how the medallion architecture feeds Tableau data sources.
Escalate data-layer issues such as schema changes, transformation errors to Data Engineers with clear documentation of the issue and its report impact.
Use approved AI/LLM tools to accelerate SQL writing, documentation, data exploration, and troubleshooting.
Document report logic, conversion decisions, validation results, and discrepancies clearly and consistently in project tracking tools.
Participate in Agile ceremonies (sprint planning, standups, reviews, retrospectives) and collaborate with QA, Data Engineers, Business Analysts, and Project Manager to maintain delivery velocity.