

Senior Data Scientist - W2 Role
β - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior Data Scientist on a W2 contract for 3 to 6 months, with a pay rate of "unknown." Candidates must have a Bachelor's degree, proficiency in R and SQL, and significant experience in machine learning and data analysis in dynamic environments.
π - Country
United States
π± - Currency
$ USD
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π° - Day rate
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ποΈ - Date discovered
July 3, 2025
π - Project duration
3 to 6 months
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ποΈ - Location type
Unknown
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π - Contract type
W2 Contractor
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π - Security clearance
Unknown
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π - Location detailed
Ashburn, VA
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π§ - Skills detailed
#Sqoop (Apache Sqoop) #Datasets #SQL (Structured Query Language) #Logistic Regression #Data Science #BO (Business Objects) #Tableau #HDFS (Hadoop Distributed File System) #Classification #Data Mining #HBase #Kafka (Apache Kafka) #Python #Programming #NER (Named-Entity Recognition) #Business Objects #Big Data #SAS #Documentation #Statistics #Spark (Apache Spark) #NLP (Natural Language Processing) #SPSS (Statistical Package for the Social Sciences) #Visualization #"ETL (Extract #Transform #Load)" #Project Management #Mathematics #Java #Regression #Hadoop #Databases #Computer Science #LSA (Latent Semantic Analysis) #R #Data Analysis #Scala #ML (Machine Learning)
Role description
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The strongest applicants will offer multiple years of experience in highly dynamic, threat/risk driven operating environments. They will also have a proven track record of delivering production ready decision support tools and applications employed in the field and by mission-support entities. Further, highly competitive applicants will have a demonstrated capacity to: work closely and collaboratively with mission stakeholders; respond to emergent, mission-driven changes in priorities and expected outcomes; and, apply new and emerging tools and techniques. Within three - six months of joining the project, data scientists will be expected to:
β’ Perform hands-on analysis and modeling involving the creation of intervention hypotheses and experiments, assessment of data needs and available sources, determination of optimal analytical approaches, performance of exploratory data analysis, and feature generation (e.g., identification, derivation, aggregation).
β’ Collaborate with mission stakeholders to define, frame, and scope mission challenges where big data interventions may offer important mitigations and develop robust project plans with key milestones, detailed deliverables, robust work tracking protocols, and risk mitigation strategies.
β’ Demonstrate proficiency in extracting, cleaning, and transforming CBP transactional and mission data associated within an identified problem space to build predictive models as well as develop appropriate supporting documentation.
β’ Leverage expert knowledge of a variety of statistical and machine learning techniques and methods to define and develop programming algorithms; train, evaluate, and deploy predictive analytics models that directly inform mission decisions.
β’ Execute projects including those intended to identify patterns and/or anomalies in large datasets; perform automated text/data classification and categorization as well as entity recognition, resolution and extraction; and named entity matching.
β’ Brief project management, technical design, and outcomes to both technical and non-technical audiences including senior government stakeholders throughout the model development/ project lifecycle through written as well as in-person reporting.
Qualifications
Education:
β’ Bachelorβs Degree (required), Masterβs or Ph.D. degree (preferred) in operations research, industrial engineering, mathematics, statistics, computer science/engineering, or other related technical fields with equivalent practical experience.
Required Qualifications
β’ Proficiency with statistical software packages: R
β’ Experience with programming languages: R, SQL
β’ Experience constructing and executing queries to extract data for exploratory data analysis and model development
β’ Experience performing training set construction, analysis, and data mining
β’ Experience with unsupervised machine learning techniques and methods
β’ Significant experience in developing machine learning models and applying advanced analytics solutions to solve complex business problems
β’ Proficiency with SQL programming
β’ Experience with unsupervised and supervised machine learning techniques and methods
β’ Experience working with large-scale (e.g., terabyte and petabyte) unstructured and structured data sets and databases
β’ Experience performing data mining, analysis, and training set construction
Desired Qualifications
β’ Experience with programming languages including: Python, Scala, Java
β’ Experience constructing and executing queries to extract data in support of EDA and model development
β’ Proficiency with statistical software packages including: SAS, SPSS Modeler, R, WEKA, or equivalent
β’ Proficiency with Unsupervised Machine Learning methods including Cluster Analysis (e.g., K-means, K-nearest Neighbor, Hierarchical, Deep Belief Networks, Principal Component Analysis), Segmentation, etc.
β’ Experience with Natural Language Processing (NLP), computational linguistics, Entity extraction, named entity recognition (NER), name matching, disambiguation, Latent Semantic Analysis (LSA) and Latent Dirichlet Allocation (LDA).
β’ Proficiency with Supervised Machine Learning methods including Decision Trees, Support Vector Machines, Logistic Regression, Random/Rotation Forests, Categorization/Classification, Neural Nets, Bayesian Networks, etc.
β’ Experience with pattern recognition and extraction, automated classification, and categorization
β’ Experience with entity resolution (e.g., record linking, named-entity matching, deduplication/ disambiguation)
β’ Experience with visualization tools and techniques (e.g., Periscope, Business Objects, D3, ggplot, Tableau, SAS Visual Analytics, PowerBI)
β’ Experience with big data technologies (e.g., Hadoop, HIVE, HDFS, HBase, MapReduce, Spark, Kafka, Sqoop)
β’ Masterβs Degree in mathematics, statistics, computer science/engineering, or other related technical fields with equivalent practical experience