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334 data science engineer jobs at 169 companies in Arlington, VA

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Data Science Engineer, Lead
McLean, Virginia, United States
$99k-$225k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
4+ YOE4+ years with Python, SQL, ETL and data pipelines; experience with containers/Kubernetes, data engineering, and writing source code; TS/SCI with polygraph required; bachelor's degree.
Python, SQL, ETL, Kubernetes, Spark, ELK, OpenSearch, AWS, S3, Terraform
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Data Science Engineer, Lead
McLean, Virginia, United States
$99k-$225k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
4+ YOEMinimum 4 years experience with Python, SQL, ETL and data pipelines; experience with containers/Kubernetes, data engineering, and writing source code; TS/SCI clearance with polygraph; Bachelor's degree required.
Python, SQL, ETL, Kubernetes, Spark, ELK, OpenSearch, AWS, S3, Terraform
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Senior Data Science Engineer
Laurel, Maryland, United States
$180k-$220k/yr OnsiteFull Time
GrammaTech
GrammaTech: Provides software products and research services focused on cybersecurity and code analysis.
12+ YOERequires active TS/SCI with Polygraph, 12+ years software engineering, Bachelor's in CS (or equivalent experience), expertise in Java/Scala/Python, ML model development, Scikit-learn, Jupyter, Git tooling, and compliance analytics.
Java, Scala, Python, Lucene, JEXL, SQL, JSON, Linux, Scikit-learn, Jupyter Notebooks, Ghostmachine, GM Learn, Git, GitLab, Bitbucket, Stash, IntelliJ, Eclipse, Jira, Confluence, Random Forest, AWS, Apache Spark, Agentic AI, Large Language Models (LLMs)
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Senior Data Science Developer
Annapolis Junction, Maryland, United States
$155k-$175k/yr HybridFull Time
Integral Federal
Integral Federal: Delivers technology and intelligence solutions for national security missions.
10+ YOE10+ years experience; Public Trust clearance; development with Python, R, Java, SQL; AWS (Glue, Redshift) and Power BI experience; expertise with large SQL datasets, notebooks, and data science tooling.
Python, R, Java, SQL, AWS, Glue, Redshift, Microsoft Power BI Report Server, Zeppelin, JupyterLabs, AI, ML
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Lead Machine Learning / Data Science Engineer
Reston, Virginia, United States
$90k-$200k/yr HybridFull Time
CapTech
CapTech: Provides technology and management consulting services to large enterprises.
7+ YOE7+ years delivering data engineering and ML solutions on cloud platforms; technical leadership; hands-on with Python/Scala, SQL, Spark, Docker, Snowflake/Databricks; experience with LLMs, prompt engineering, and productionizing ML systems.
AWS, Azure, GCP, Python, Scala, SQL, Spark, NoSQL, Docker, Snowflake, Databricks, Azure SQL, Amazon RDS, LLMs, GPT, Claude, Mistral, MCP, RAG, LangChain, n8n, pydantic
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2mo
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Data Engineer, PXT Central Science
Seattle or Boston or Bellevue or Arlington or San Francisco
OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
3+ YOE3+ years data engineering; AWS stack; data modeling/ETL; programming in Python/Java/Scala/NodeJS; experience with Redshift/S3/Glue/EMR/Kinesis/Lambda; non-relational data stores.
AWS, Python, SQL, Spark, Hadoop, Hive, Redshift, S3, EMR, Lambda, Kinesis, Airflow
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Data Science & AI/PQC Engineer — Federal Mission Solutions
Gaithersburg, Maryland, United States
$150k-$185k/yr OnsiteFull Time
Diaconia
Diaconia: Provides secure IT modernization and engineering for government agencies.
3+ YOE3+ years experience in data science, ML engineering, software engineering, or cybersecurity; Bachelor's in a technical field (or equivalent experience); proficiency in Python and SQL; cloud/container delivery experience; U.S. citizenship and ability to obtain government security clearance.
Python, SQL, APIs, Docker, Kubernetes, Helm, CI/CD, AWS, Azure, Git, Linux, PyTorch, TensorFlow, Hugging Face Transformers, scikit-learn, XGBoost, pandas, LangChain, LangGraph, Semantic Kernel, AutoGen, MLflow, SageMaker, Vertex AI, Airflow, Kubeflow, Databricks, Tableau, Power BI, Plotly Dash, Kibana, Grafana
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Data Engineer
Bethesda, Maryland, United States
$85k-$133k/yr OnsiteFull Time
Consumer Product Safety Commission
Consumer Product Safety Commission: Protecting the public from risks of consumer product injuries.
1+ YOEBachelor's in math/statistics/computer science/data science or equivalent plus 52 weeks specialized experience in cloud-based data engineering; U.S. citizenship and public trust suitability required.
Python, Microsoft, Azure, Azure Data Factory, Azure SQL, Data Lake Storage, AWS, APIs
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3mo
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Data Engineer - Junior
Quantico, Virginia, United States
$94k-$157k/yr OnsiteFull Time
American Systems
American Systems: Providing strategic engineering and IT solutions for government programs.
0+ YOE0–3 years in data engineering; SQL and Python; bachelor’s in CS/IS/Engineering/Data Science; active TS/SCI clearance.
SQL, Python, Relational Databases
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3w
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Data Engineer
New York City or San Francisco or Los Angeles or Irvine or McLean or Washington
$94k-$175k/yr HybridFull Time
Thomson Reuters
Thomson ReutersNASDAQ: TRI: Provides professional software, data, and news services globally.
Several years data engineering experience, bachelor\u0002s in computer science/engineering, proficiency with Python and SQL, RESTful services, relational and document DBs, Linux/Windows, AWS; US Secret clearance required to start (TS preferred).
Python, SQL, RESTful web services, AWS Glue, Snowflake, NIFI, Power BI, Tableau, Linux, Windows, AWS
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3mo
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Data Engineer - Junior
Quantico, Virginia, United States
$110k-$125k/yr OnsiteFull Time
American Systems
American Systems: Providing engineering and IT solutions to federal government agencies.
0+ YOEBachelor's in CS/IS/Engineering/Data Science,0–3 years data engineering experience,SQL and Python experience,familiarity with relational databases,ability to follow engineering standards,active TS/SCI clearance required.
SQL, Python
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2mo
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Manager, Data Science - Consumer Identity Machine Learning
San Jose or McLean or New York
$197k-$225k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
Strong data science and ML skills; experience with large-scale data, Python, Spark; collaboration with product/engineering; open-source and cloud experience; multiple degree options with required years of analytics experience.
Python, Spark, SQL, AWS
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3w
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Data Science Software Engineer
Annapolis Junction, Maryland, United States
$50k-$290k/yr OnsiteFull Time
The Swift Group: Providing engineering and cybersecurity services for national security missions.
20+ YOE20 years SWE experience, US citizenship and active security clearance, bachelor\u0002s in CS or related (or 4 additional years SWE), expertise in Java/Scala/Python, ML model development and monitoring, Linux development, and agency compliance.
Java, Scala, Python, Lucene, JEXL, SQL, JSON, Random Forest, Ghostmachine (Map/Reduce), GM Learn, Jupyter Notebooks, IntelliJ, Eclipse, Git, Gitlab, Stash, Bitbucket, Jira, Confluence, Scikit-learn, AWS, Spark, LLM
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2mo
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Analytics Engineer, Data Science
Chicago or Austin or Baltimore or Denver or Boulder or Hartford or New Haven or Philadelphia or Providence or Miami
$118k-$173k/yr HybridFull Time
DoorDash
DoorDashNASDAQ: DASH: On-demand delivery platform connecting consumers with local merchants.
2+ YOE2-6+ years in BI/analytics/data engineering; SQL; Python/Scala; Looker/Tableau/Sigma; database fundamentals; data quality checks; strong communication; fast-paced; self-starter.
SQL, Python, Scala, Looker, Tableau, Sigma, S3, Hive, Spark, Pydeequ, Great Expectations
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Senior Data Engineer
Vienna, Virginia, United States
$124k-$150k/yr HybridFull Time
SteerBridge: Provides technology and digital transformation services for government agencies.
6+ YOEU.S. citizen with Bachelor’s in Systems Engineering, Computer Science or related, active or clearable security clearance, 6+ years experience building data pipelines and cloud-native data platforms using Python, SQL, and modern data tooling.
Python, Pandas, PySpark, NumPy, SciPy, SQL, Git, TensorFlow, PyTorch, Scikit-learn, Redshift, Snowflake, BigQuery, Apache Kafka, Airflow, Spark, Flink, NiFi, AWS Glue, GCP Dataflow, Azure Data Factory, S3, Blob, RDS, DynamoDB, EMR, Dataproc, ECS, Hadoop, Hive, Presto, Delta Lake, Apache Iceberg, Apache Hudi, Athena, Trino, Dask, Ray, GitLab, Jenkins, CircleCI, pytest, unittest, Docker, Kubernetes, MLflow, Kubeflow, Tableau, Microsoft Power BI, Lucidchart, PlantUML, Draw.io
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2mo
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Senior Data Engineer (Labs)
Washington DC or Charleston or San Diego
$115k/yr HybridFull Time
Ignite Digital Services
Ignite Digital Services: Providing digital transformation and data analytics for national security agencies.
6+ YOEBachelor's in CS/Data Science/Engineering; 6+ years in enterprise data solutions; Python/SQL; APIs/ETL; AI-ready data; DOD Secret clearance
Python, SQL, Snowflake, Databricks, APIs, ETL/ELT, AI-ready platforms
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Data Engineer
Chantilly, Virginia, United States
OnsiteFull Time
KBR
KBRNYSE: KBR: Provides engineering, technology, and professional services for global markets.
Bachelor's in a quantitative field, experience in data science/analytics, proficiency in Python/R/Java and data libraries, containerization and CI/CD experience, infrastructure-as-code (Terraform/Ansible), and active Top Secret/SCI with Polygraph.
Python, R, Java, Pandas, NumPy, SciPy, RESTful APIs, Terraform, Ansible, Docker, Kubernetes, TensorFlow, PyTorch, Scikit-learn, Hadoop, Spark, STK, AWS GovCloud, SDLC, CI/CD, Test-driven development, DevSecOps
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2mo
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Director, Data Science & AI Engineering
Nashville or Washington D.C. or Los Angeles or San Francisco or New York City
$290k-$440k/yr OnsiteFull Time
Pillsbury Winthrop Shaw Pittman
Pillsbury Winthrop Shaw Pittman: International law firm providing comprehensive legal and strategic advisory.
10+ YOE10+ years data science/AI leadership; production AI/ML, LLMs, RAG, MLOps; strong architecture and governance; strategic and hands-on.
LLMs, RAG, vector databases, embeddings, hybrid search, Model Context Protocol (MCP), prompt engineering, MLOps, LLMOps, CI/CD, cloud infrastructure, data warehouses, BI dashboards
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VP, Head of Data Science
London or New York or Washington or San Francisco or Dublin or Brussels or Singapore or Hong Kong
OnsiteFull Time
Penta Group
Penta Group: Consultancy providing data-driven stakeholder solutions and reputation strategy.
10+ YOEHands-on technical leader with ~10+ years experience in applied AI and data science, strong Python, SQL/PostgreSQL, AWS, Git, production LLM/ML workflows, NLP, MLOps/DevOps, and people management to ship reliable AI systems.
Python, LLMs, OpenWebUI, LiteLLM, Claude, Claude Code, SQL, PostgreSQL, AWS, EC2, ECS, S3, Git, DevOps, MLOps
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1w
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Data Engineer
Washington, District of Columbia, United States
$150k/yr HybridFull Time
Altamira Technologies
Altamira TechnologiesNYSE: PSN: Provides data analytics and engineering for national security missions.
5+ YOEExperience with Databricks, GitLab, Confluence, Jira, advanced Python, API integration, DevSecOps; degree in computer science/systems engineering or related; SECRET clearance with ability to obtain TS/SCI.
Databricks, GitLab, Confluence, Jira, Python
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