13 software engineer data science jobs at 10 companies in Winchester, VA

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Software Developer
Sterling, Virginia, United States
OnsiteFull Time
ASSYST
ASSYST: An IT firm specializing in digital transformation, DevSecOps, cyber security, and AI integration for government clients.
Master's in Computer Science or related required; expertise in software engineering, AI/ML, data science, deep learning, neural networks, and quality assurance testing; ability to travel to local clients.
1mo
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Data Engineer - TS/SCI with Polygraph
Chantilly, Virginia, United States
$221k-$299k/yr OnsiteFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
10+ YOEActive TS/SCI with Polygraph required, 10+ years related experience, BS in Computer Science or equivalent, expertise in data engineering, ETL, backend development, cloud, containerization, and strong software lifecycle skills.
Java, Python, Angular, Java Script, Go, Elastic Search, Kafka, Airflow, AWS, Azure, GCP, Docker, Kubernetes, CI/CD
2mo
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JR Software Developer
Chantilly, Virginia, United States
OnsiteFull Time
Probity
Probity: Provides IT, cybersecurity, and engineering services to government agencies.
Master's degree in Computer Science, Information Systems, Engineering or equivalent; strong Python, Java/Scala, SQL; Hadoop/Spark; cloud data platforms; Docker/Kubernetes/Airflow; Agile experience; active Top Secret/SCI clearance with Polygraph.
Python, Java, Scala, SQL, Hive, Hadoop, Spark, AWS Glue, Google Cloud Dataflow, Azure Data Factory, Docker, Kubernetes, Airflow
1mo
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Software Engineer (Associate/Senior Associate)
Manassas, Virginia, United States
HybridFull Time
VTG
VTG: Provides engineering and digital modernization solutions for national security.
Bachelor's in Computer Science/Data Engineering or similar; proficient in Python, RESTful/gRPC, Linux; ability to obtain Secret clearance and pass background check; U.S. citizenship required. Desired: SQL/NoSQL, Kubernetes, Docker, GPU tooling (CuPy/Numba), multiprocessing, shell scripting.
Python, RESTful, gRPC, Linux, SQL, NoSQL, Kubernetes, Docker, Podman, KVM, Helm, CuPy, Numba, multiprocessing
1mo
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Senior Full Stack Software Developer w/poly
Sterling, Virginia, United States
OnsiteFull Time
GRVTY
GRVTY: Develops defense technology, cyber, and intelligence software solutions.
10+ YOEActive TS/SCI with poly required; 10+ years software engineering; strong Python and Java; React and Django experience; DevOps/CI-CD; experience with large-scale data pipelines; Bachelor’s in Computer Science or related field.
Python, Java, React, Django, Spark, OpenSearch, Elasticsearch, Kafka, gRPC, Celery, Docker, Kubernetes, MariaDB, MySQL, ValKey, PostgreSQL, InfluxDB, MongoDB, Open Telemetry (OTel), GitLab, Jira, Confluence
1mo
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Spacecraft Data Systems Engineer - Blue Ring
Reston or Huntsville or Denver or Seattle or Los Angeles
$134k-$203k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
8+ YOEB.S. in computer science/engineering/IT/applied math, 8+ years spacecraft development and operations, experience with Command & Telemetry Databases and CCSDS, proficiency in Java/Python/JavaScript/C/C++, familiarity with flight software and C2 tools, ability to work with cross-functional teams; U.S. work authorization required.
CCSDS, Java, Python, JavaScript, C, C++, Command and Telemetry Database (CTDB), Command and Control (C2), Flight Software (FSW), Jira, GitLab, CI/CD pipelines, Defense Biometric Identification System (DBIDS)
2mo
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Systems Engineer
Manassas, Virginia, United States
$80k-$130k/yr OnsiteFull Time
Sonalysts
Sonalysts: Provides technical analysis and training systems for defense agencies.
5+ YOEU.S. citizen with active DoD SECRET clearance; BS+7yrs or MS+5yrs in CS/Engineering/Data Science; MBSE, SysML/UML, software requirements and integration experience; familiarity with Kubernetes, Jira, Confluence, TestRail.
MBSE, No Magic Cameo System Modeler, Rhapsody, SysML, UML, Kubernetes, Jira, Confluence, TestRail
1mo
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AI Solutions Engineer
Chantilly, Virginia, United States
$170k-$210k/yr OnsiteFull Time
Amentum
AmentumNYSE: AMTM: Provides engineering, technology, and mission support to government agencies.
5+ YOEActive Top Secret clearance, Bachelor’s in CS/AI/Data Science/Engineering, 5+ years software/AI delivery, 2+ years applied AI/ML or LLM experience, predictive maintenance experience, and ability to work on-site in secure environments.
Python, R, Java, AWS, Azure, Google Cloud, IBM Maximo, IoT, LLM, CMMS, EAM
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AI Developer
Winchester, Virginia, United States
$100k-$130k/yr OnsiteFull Time
Pisces Healthcare Solutions
Pisces Healthcare Solutions: Distributes medical equipment and supplies to federal healthcare facilities.
3+ YOEBachelor's in CS/AI/Data Science,3+ years AI/ML or software experience,proficiency in Python,advanced SQL,API integration,experience with web AI and ERP integrations,knowledge of LLMs and MLOps.
Python, NetSuite ERP, OpenAI, Azure OpenAI, Docker, Kubernetes, MLflow, SQL, AWS, Azure, GCP
3w
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AI/ML Engineer
Arlington or Sterling
$99k-$206k/yr OnsiteFull Time
Nightwing
Nightwing: Provides advanced cyber and intelligence solutions for national security.
5+ YOEU.S. citizen with active Secret (TS/SCI preferred), 5+ years in automation/data/software engineering, strong Python, AWS data pipelines, ML/LLM integration (Amazon Bedrock), Databricks, APIs, and CI/CD; BS in CS/Data Science or equivalent experience.
Python, Databricks, Amazon Bedrock, Git, Docker, Kubernetes, Airflow, Prefect, Kafka, Kinesis, Spark, Hadoop
3w
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Full Stack Developer
Chantilly, Virginia, United States
$150k-$250k/yr OnsiteFull Time
GRVTY
GRVTY: Develops defense technology, cyber, and intelligence software solutions.
3+ YOEActive TS/SCI+Poly clearance, Bachelor's in Computer Science, 3+ years Solr/Elastic and big data experience, 5+ years backend Java experience, experience with Lucene and search tuning.
Solr, Elastic Search, Lucene, Hadoop, Pyspark, Spark, Hbase, Java, AWS, JIRA, GITHUB
1mo
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AI Model Developer
Fairfax or Ashburn
$125k-$150k/yr HybridFull Time
ECS
ECSNYSE: ASGN: Provides advanced technology and engineering services to government agencies.
3+ YOEBachelor's degree in CS/AI/Data Science, US citizenship and ability to obtain Public Trust, 3+ years AI/ML and full-stack experience, strong Python and ML framework skills, backend/frontend and cloud/DevOps familiarity.
Python, NumPy, Pandas, scikit-learn, TensorFlow, PyTorch, Transformers, Django, Flask, FastAPI, React, Angular, Vue.js, PostgreSQL, MySQL, MongoDB, Redis, Docker, Kubernetes, CI/CD, AWS, Microsoft Azure, GCP, GitHub workflows, Matplotlib, Plotly, D3.js, GraphQL, JavaScript, TypeScript, Next.js, AWS Bedrock, GCP AI Platform, Microsoft Azure ML, GitHub Actions
1mo
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Machine Learning Engineer (Clearance Sponsorship)
Chantilly, Virginia, United States
$113k-$238k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
5+ YOEMust obtain active TS/SCI with polygraph; Bachelor's +5 years in CS/Software/Data Science or related; strong Python, OOP, Git, Docker; experience with LLMs, RAG, vector DBs, SQL/NoSQL, containerization, and cloud/MLOps practices.
Python, Git, Docker, LangChain, LangGraph, Large Language Models (LLM), RAG, ChromaDB, Pinecone, Weaviate, SQL, NoSQL, Vector, Kubernetes, Rancher, Ansible, CI/CD, MLOps, AWS, Azure, Google Cloud, ServiceNow, SAP, Tableau, Splunk