Pay
$127K–$190K is typical
The middle half of what similar US postings state. This one doesn’t list pay.
From 2,133 postings in the last year. Stated ranges, not salaries paid.
Senior Data Engineer
McLean, VA, US
Live, first seen by us 44 days ago- Pay
- Pay not listedSimilar roles state $127K–$190K
- Work setting
- Not stated
- Employment
Full-time — employment source
Employment type in the employer’s posting: FULL_TIME
From the employer’s posting
Before you apply
- Work authorization
- Citizens only
Must have an active Secret security clearance
What you’ll work on
Full postingDevelop high-performance Python data-processing and analytical workflows
Develop, train, evaluate, and refine predictive machine learning models
Integrate data products and predictive models into the Army Vantage environment
Support model monitoring and detection of model or data drift
Troubleshoot data-processing, analytical, and predictive-model issues
From the employer’s posting
Develop high-performance data-processing and analytical workflows using Python.
Working with ML Engineer, develop, train, evaluate, and refine predictive machine learning models.
Integrate data products and predictive models into the Army Vantage environment.
Support monitoring of predictive models and identification of model or data drift.
Troubleshoot data-processing, analytical, and predictive-model issues.
What you’ll bring
All qualificationsCore experience
- 8+ years of data engineering experience, including dimensional models
- Active Secret security clearance
- Strong proficiency in Python
- Hands-on experience with Polars and NumPy
- Experience with LightGBM and XGBoost
Qualification wording
8+ years of experience in data engineering including working with and designing dimensional models
Must have an active Secret security clearance
Strong proficiency in Python.
Hands-on experience with Polars.
Experience with LightGBM.
Education & alternatives
Required Qualifications - Education: BS degree in Computer Science, Information Technology, Engineering, Data Analytics, or another related scientific or technical discipline (or equivalent experience) - Must have an active Secret security clearance
Posting record
Report an error- Status in our records
- Live
- First seen by us
- Sep 21, 202644 days ago
- Recorded sightings
- 35
- Last seen by us
- Nov 4, 2026
- Employer says posted
- Sep 15, 2026
These dates show when we found the posting. Check the employer’s website to confirm it is still accepting applications.
How this job compares
Time since we first saw it
Day 44
Similar jobs usually come down between day 6 and day 54.
From 10,805 similar postings that came down. Coming down is not always a hire.
Halvik is hiring
6 open jobs
Open jobs by the week we first saw them, last 12 weeks.
- Hiring at a steady pace
- Takes jobs down at a usual pace
See how this role fits your experience
Add your resume and we’ll mark which of these tools you already use, and point out anything in the posting that could rule you out.
- Python
- LightGBM
- NumPy
- Polars
- scikit-learn
- XGBoost
Where the posting names them
Position Overview The Senior Data Engineer works with a Senior Data/ML Engineer and supports advanced data engineering within the Army Vantage environment. The position focuses on high-performance Python-based data processing and the development and implementation of predictive capabilities. 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.
The Senior Data Engineer works with a Senior Data/ML Engineer and supports advanced data engineering within the Army Vantage environment. The position focuses on high-performance Python-based data processing and the development and implementation of predictive capabilities. 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. Key Responsibilities
Key Responsibilities - Develop high-performance data-processing and analytical workflows using Python. - Prepare, transform, analyze, and validate data using Polars, NumPy, and related Python technologies.
- Develop high-performance data-processing and analytical workflows using Python. - Prepare, transform, analyze, and validate data using Polars, NumPy, and related Python technologies. - Support feature development for predictive machine learning.
- Demonstrated senior-level Data engineering experience. - Strong proficiency in Python. - Hands-on experience with Polars.
- Understanding of predictive machine learning experience. - Experience with LightGBM. - Experience with XGBoost.
- Hands-on experience with Polars. - Hands-on experience with NumPy. - Understanding of predictive machine learning experience.
- Strong proficiency in Python. - Hands-on experience with Polars. - Hands-on experience with NumPy.
- Experience with LightGBM. - Experience with XGBoost. Preferred Expertise
Your next step
Complete your application on halvik.isolvedhire.com. The employer’s form will show what is required.
Already applied? Track this application
About the role
We file this job under Data Engineer, by the work the posting describes.
Data engineers build and run the pipelines that copy data out of apps and outside services into a warehouse or lake, and fix them when a source changes or a load fails.
Expect SQL, Python, a cloud platform, a scheduler such as Airflow, and often tools for large data such as Spark or Kafka.
An analytics engineer works one step later, turning the raw data a data engineer lands into clean tables people can query.
US government figures for database architects
- Median yearly pay, May 2025
- $139,500
- Expected change, 2025 to 2035
- 9.4% more jobsagainst 3.5% for all jobs
The government has no code for data engineers, so these figures are for the closest group, database architects, which includes data integration and data warehousing specialists.
Source: US Bureau of Labor Statistics, Occupational Employment and Wage Statistics (May 2025) and Employment Projections (2025 to 2035). Occupation code 15-1243.
Job description
Halvik Corp delivers a wide range of services to 13 executive agencies and 15 independent agencies. Halvik is a highly successful WOB business with more than 50 prime contracts and 500+ professionals delivering Digital Services, Advanced Analytics, Artificial Intelligence/Machine Learning, Cyber Security and Cutting-Edge Technology across the US Government. Be a part of something special!
Position Overview
The Senior Data Engineer works with a Senior Data/ML Engineer and supports advanced data engineering within the Army Vantage environment. The position focuses on high-performance Python-based data processing and the development and implementation of predictive capabilities.
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.
Key Responsibilities
- Develop high-performance data-processing and analytical workflows using Python.
- Prepare, transform, analyze, and validate data using Polars, NumPy, and related Python technologies.
- Support feature development for predictive machine learning.
- Working with ML Engineer, develop, train, evaluate, and refine predictive machine learning models.
- Evaluate 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.
Required Qualifications
- Education: BS degree in Computer Science, Information Technology, Engineering, Data Analytics, or another related scientific or technical discipline (or equivalent experience)
- Must have an active Secret security clearance
- Years of Experience: 8+ 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.
- Understanding of predictive machine learning experience.
- 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.
Halvik offers a competitive full benefits package including:
Company-supported medical, dental, vision, life, STD, and LTD insurance
Benefits include 11 federal holidays and PTO
Eligible employees may receive performance-based incentives in recognition of individual and/or team achievements.
401(k) with company matching
Flexible Spending Accounts for commuter, medical, and dependent care expenses
Tuition Assistance
Charitable Contribution matching
Halvik Corp is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status.
Halvik's pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Source details
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Source excerptsSelected passages from the saved posting. Check the full description for conditions and exceptions.
- Pay
No pay amount identified in the saved description.
- Location & working pattern
McLean, VA, US
Working pattern and location restrictions need checking in the full posting.
- Work authorization
- Education: BS degree in Computer Science, Information Technology, Engineering, Data Analytics, or another related scientific or technical discipline (or equivalent experience) - Must have an active Secret security clearance - Years of Experience: 8+ years of experience in data engineering including working with and designing dimensional models for analytical and reporting environments.