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# Sr. Data/ML Engineer

- **Company:** Halvik Corp.
- **Location:** McLean, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Information Engineering, Data Infrastructure, Python (Programming Language), Machine Learning, NumPy, Software Systems, Data Processing, Feature Engineering, Scikit Learn, Information Technology, Data Analytics, Xgboost
- **Published:** September 15, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9165111/sr-dataml-engineer

## About the Role

The position requires familiarity and technical understanding across one or more areas including in Python, Polars, NumPy, and predictive machine learning using Scikit-Learn, LightGBM, XGBoost, and related techniques supported by demonstrated experience completing projects involving 2 or more of these technologies. The emphasis is on understanding how the technologies interact and having sufficient practical experience to successfully implement their integration., * Education: BS degree in Computer Science, Information Technology, Engineering, Data Analytics, or another related scientific or technical discipline (or equivalent experience)

 * Must possess an active Secret security clearance.
 * Years of Experience: 10+ years of experience in data engineering including working with and designing dimensional models for analytical and reporting environments.
 * Technical Competencies & Tools:

 * Demonstrated senior-level Data engineering experience.
 * Strong proficiency in Python.
 * Hands-on experience with Polars.
 * Hands-on experience with NumPy.
 * Demonstrated predictive machine learning experience.
 * Experience developing predictive ML solutions using Scikit-Learn.
 * Experience with LightGBM.
 * Experience with XGBoost.

Preferred Expertise

 * Experience developing data or analytical capabilities within Palantir Foundry/Army Vantage.
 * Experience operationalizing predictive models within enterprise environments.
 * Experience supporting large or complex government data environments.
 * Previous Army, DoD, or federal mission-system experience.

## Description

The Senior Data/ML Engineer supports advanced data engineering and predictive machine learning within the Army Vantage environment. The position focuses on high-performance Python-based data processing and the development and implementation of predictive machine learning capabilities., * Develop high-performance data-processing and analytical workflows using Python.

 * Prepare, transform, analyze, and validate data using Polars, NumPy, and related Python technologies.
 * Perform feature engineering in support of predictive machine learning.
 * Develop, train, evaluate, and refine predictive machine learning models.
 * Develop predictive ML capabilities using Scikit-Learn, LightGBM, XGBoost, and related technologies.
 * Evaluate model performance and support model optimization and calibration.
 * Support monitoring of predictive models and identification of model or data drift.
 * Develop production-ready analytical capabilities for use within Army Vantage.
 * Integrate data products and predictive models into the Army Vantage environment.
 * Collaborate with the Full-Stack/Integration Lead and Foundry Workshop Developers to incorporate analytical capabilities into end-to-end mission solutions.
 * Troubleshoot data-processing, analytical, and predictive-model issues.
 * Document analytical approaches, data-processing logic, model methodology, and technical implementation.


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