Senior Data Visualization Developer

Excella; Arlington (VA); Hybrid; USD 102,805 - 149,319; Full time

Job summary

Excella in Arlington, Virginia is seeking a Senior Data Visualization Developer to create reports and dashboards that support self-service analytics for clients. This role requires strong skills in BI tools and SQL, along with the ability to translate business needs into effective visualizations.

The ideal candidate will have 3+ years of experience with data visualization and analytics, familiarity with relational databases, and a keen attention to detail. Join Excella to contribute to a culture of data-driven decision-making.

Qualifications

• 3+ years of experience developing reports and dashboards using BI tools.
• 3+ years writing SQL queries of medium complexity.
• Proven ability to present complex data in an intuitive manner.

Responsibilities

• Interact directly with client stakeholders to understand data visualization needs.
• Develop and optimize reports and dashboards using BI tools.
• Ensure data accuracy by performing quality checks.

Skills

Data visualization tools (Tableau, Power BI, Looker, D3)

SQL queries

Relational database knowledge

Documentation skills

Agile methodologies

Data warehousing concepts

Job description

Overview

The Senior Data Visualization Developer is responsible for designing and developing reports and dashboards to support self-service analytics environments for clients. This role requires strong technical skills in business intelligence tools and SQL, as well as the ability to translate business needs into effective data visualizations.

Responsibilities

• Interact directly with client stakeholders (business or technical) to understand their data visualization needs.
• Use SQL queries to explore, analyze, and import data sources for report development.
• Work directly with clients to understand their business goals, data needs, and reporting requirements.
• Create prototypes based on stakeholder requirements to validate report/dashboard design.
• Develop and optimize reports and dashboards using tools such as Tableau and Power BI.
• Ensure data accuracy by performing quality checks on source data.
• Understand and follow best practices in data visualization, automation, and user experience and participate in the cultivation of data visualization culture and community internally.
• Document and train end‑users on BI deliverables to ensure long‑term sustainability.

Qualifications

• 3+ years of experience developing reports and dashboards using BI tools (Tableau, Power BI, Looker, D3).
• 3+ years writing SQL queries of medium complexity.
• Strong understanding of relational database structures.
• Proven ability to present complex data in an intuitive and visually compelling manner.
• Experience in analyzing stakeholder needs and developing user‑friendly visualizations.
• Detail‑oriented with a strong sense of data accuracy and quality assurance.
• Ability to structure and write clear, concise documentation.
• Familiarity with relational databases (e.g., SQL, MySQL) and NoSQL databases.
• Knowledge of data warehousing concepts and cloud platforms like AWS, Google Cloud, or Azure.
• Familiarity with Agile methodologies and collaboration tools (e.g., Jira).
• Enthusiastic about learning and adopting new features within BI tools.

Pay Range

$102,805 - $149,319 USD

Equal Opportunity Employer

Excella is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected veteran status, age, or any other characteristic protected by law. Excella is committed to providing access, equal opportunity, and reasonable accommodation for individuals with disabilities in employment, its services, programs, and activities. To request reasonable accommodation to participate in the job application or interview process, contact [e-mail] or 703-840-8600.