Senior Data Analyst

⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior Data Analyst in Reston, VA, on a long-term contract with a pay rate of "unknown." Requires 3+ years in healthcare, 7+ years in Big Data/NoSQL, strong SQL skills, and experience in data integration and mapping.
🌎 - Country
United States
πŸ’± - Currency
$ USD
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πŸ’° - Day rate
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πŸ—“οΈ - Date discovered
September 7, 2025
πŸ•’ - Project duration
More than 6 months
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🏝️ - Location type
Hybrid
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πŸ“„ - Contract type
Unknown
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πŸ”’ - Security clearance
Unknown
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πŸ“ - Location detailed
Reston, VA 20191
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🧠 - Skills detailed
#Data Cleaning #Complex Queries #Ab Initio #Computer Science #Data Profiling #Data Mapping #Data Analysis #SQL (Structured Query Language) #Data Quality #Data Science #Business Analysis #Data Integration #Compliance #Statistics #Data Modeling #Mathematics #Big Data #Databases #Data Warehouse #Dimensional Modelling #Documentation #NoSQL
Role description
Senior Data Analyst Reston, VA - must be able to come for PI planning once every 2 months Long Term Contract Qualifications: 3+ years of Experience in Healthcare Industry 7+ years of Hands on experience with Big Data/NoSQL Platforms with experience delivering production projects at scale. 7+ years of demonstrated experience as Data Analyst 7+ years of Strong SQL and data modelling skills like 3rd normal form and dimensional modelling Demonstrated ability to perform complex queries, assess data quality and develop data mappings. 7+ years of experience in developing Source to Target mapping (STTM) & Gap Analysis based on business requirement. 7+ years of experience with multiple data warehousing and analytics development projects Candidate will also support the implementation of a Data Integration/Data Warehouse for the Delivery Team: Data Cleaning - identify erroneous data and determine appropriate resolution Analyze and assess the quality and integrity of the data including Reference Data Develop and implement data collection systems and other strategies that optimize statistical efficiency and data quality Understand the meaning/business context of data Acquire data from internal or external data sources and maintain mapping documents of the files, databases/data systems. Perform documentation of the STTM & Mapping doc Perform data analysis and data modeling to create source to target mappings. Evaluate risk from statistical information to determine risk to operations or non-compliance. Perform gap analysis of data requirements versus current data sources. Work closely with business analysts and source data experts to develop data requirements. Assess current data and assist in the resolution of data anomalies. Interpret data, analyze results using statistical techniques and provide ongoing reports and feedback Data profiling experience(Preferably using Ab Initio DQE) Education Level: Bachelor's Degree Education Details: Data Science, Mathematics, Computer Science, Statistics, Business or related field Experience: 5 years experience in an analytical/quantitative role. In Lieu of Education In lieu of a Bachelor's degree, an additional 4 years of relevant work experience is required in addition to the required work experience. System One, and its subsidiaries including JoulΓ©, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M2 #LI-VH1 #DI-VH1 Ref: #850-Rockville (ALTA IT)