Sr. Data Engineer

Halvik Corp delivers a wide range of services to 13 executive agencies and 15 independent agencies. As a highly successful WOB business with more than 50 prime contracts and 500+ professionals, Halvik provides Digital Services, Advanced Analytics, Artificial Intelligence/Machine Learning, Cyber Security, and Cutting‑Edge Technology across the US Government.

About the role

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, requiring familiarity with Python, Polars, NumPy, and predictive machine learning tools such as Scikit‑Learn, LightGBM, and XGBoost.

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.
• Collaborate with the ML Engineer to develop, train, evaluate, and refine predictive machine learning models.
• Evaluate performance and support model optimization and calibration.
• Monitor predictive models and identify 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.
• Work 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 a related scientific/technical discipline (or equivalent experience).
• Active Secret security clearance.
• 8+ years of experience in data engineering, including designing dimensional models for analytical and reporting environments.
• 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 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.

Benefits

• Competitive full benefits package including company‑supported medical, dental, vision, life, short‑term disability (STD), and long‑term disability (LTD) insurance.
• 11 federal holidays and paid time off (PTO).
• Performance‑based incentives recognizing individual and/or team achievements.
• 401(k) plan with company matching.
• Flexible Spending Accounts for commuter, medical, and dependent care expenses.
• Tuition Assistance.
• Charitable contribution matching.