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Data Engineer

đź“Ť In-Office
🏢 Washington, DC

Expression

💼 IT Services | 🗓️ Founded in 1997
đź‘Ą 101-250 Employees

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Job Description

hatch I.T. is partnering with Expression to find a Data Engineer. See details below:

About The Role:

Expression is seeking an experienced Data Engineer to support the design, development, and operational deployment of scalable, AI-enabled data solutions for the Department of Defense CDAO ADA IR program.

The Data Engineer will work as part of a multidisciplinary team integrating data engineering, advanced analytics, machine learning, and software engineering capabilities into mission-critical environments supporting Combatant Commands. This role will design and deploy data pipelines, preprocessing workflows, feature-engineering strategies, reusable data services, and machine learning capabilities within secure, containerized environments.

The successful candidate will collaborate with product managers, full-stack developers, platform and DevSecOps engineers, data scientists, and mission stakeholders to transform structured and unstructured data into operational insights and decision-support capabilities. The role combines data engineering, applied data science, and production ML responsibilities and emphasizes reproducibility, testing, secure deployment, technical communication, and continuous delivery.

Location and Clearance:

  • Clearance: Secret clearance required ability to obtain TS/SCI clearance
  • Location: Onsite Washington DC

About the Company:

Founded in 1997 and headquartered in Washington DC, Expression provides data fusion, data analytics, software engineering, information technology, and electromagnetic spectrum management solutions to the U.S. Department of Defense, Department of State, and national security community. Expression’s “Perpetual Innovation” culture focuses on creating immediate and sustainable value for their clients via agile delivery of tailored solutions built through constant engagement with their clients. Expression was ranked #1 on the Washington Technology 2018’s Fast 50 list of fastest growing small business Government contractors and a Top 20 Big Data Solutions Provider by CIO Review.

Responsibilities:

  • Design, develop, and maintain reusable services for data ingestion, transformation, preprocessing, and feature engineering supporting AI/ML workflows.
  • Build scalable data pipelines and workflows supporting structured and unstructured mission data.
  • Implement data science capabilities such as entity resolution, classification, clustering, prediction, anomaly detection, pattern recognition, and decision-support functions.
  • Develop services within secure, containerized environments using established CI/CD, version-control, testing, and documentation standards.
  • Collaborate with DevSecOps engineers to integrate data and ML services into secure production environments using technologies such as Databricks, Docker, and Terraform.
  • Ensure production services meet applicable performance, reliability, security, and architectural requirements for DoD enterprise and cloud-native environments.
  • Develop and deploy standalone and embedded machine learning models supporting mission decision-making, automation, anomaly detection, and pattern recognition.
  • Select and implement appropriate modeling approaches using Python, Spark, and cloud-native ML frameworks such as SageMaker and MLflow.
  • Maintain reproducibility and interpretability of model outputs to support mission transparency and audit requirements.
  • Package model-inference services using documented APIs for integration with end-user applications, operational dashboards, and other mission capabilities.
  • Conduct exploratory data analysis to identify patterns, trends, data gaps, and opportunities across structured and unstructured datasets.
  • Develop data visualizations, analytical outputs, and interpretive summaries supporting stakeholder understanding and product-team decisions.
  • Translate analytical findings into actionable recommendations using visual, narrative, and quantitative communication methods.
  • Develop and contribute reusable analysis templates, queries, and analytical workflows to improve delivery efficiency.
  • Engage product managers and mission users to define data, analytical, and model requirements aligned with operational objectives.
  • Collaborate with software, platform, and DevSecOps engineers to ensure data science components align with technical constraints, architecture, and deployment patterns.
  • Participate in Agile sprint planning, retrospectives, demonstrations, and related delivery activities.
  • Maintain documentation supporting technical accountability, reproducibility, operational handoff, and sustainment.

Requirements

  • One of the following combinations of education, certification, and recent specialized experience:
    • Bachelor’s degree plus 3 years of recent specialized experience; or
    • Associate’s degree plus 7 years of recent specialized experience; or
    • Major certification plus 7 years of recent specialized experience; or
    • 11 years of recent specialized experience.
  • Experience with data visualization and data storytelling using tools such as Palantir MSS Workshop and Slate applications.
  • Proficiency with Python, SQL, and distributed data frameworks, including technologies such as Spark, Databricks, and PySpark.
  • Experience developing machine learning models from training through deployment using industry-standard tools and libraries such as scikit-learn, TensorFlow, and XGBoost.
  • Strong technical communication skills with the ability to explain complex concepts to non-technical audiences.

Preferred Qualifications:

  • 4+ years of experience in applied data science, Palantir Foundry development, or data-pipeline development.
  • Familiarity with MLOps, API development, and secure cloud-based environments, including AWS, Azure, or Palantir Foundry.
  • Strong understanding of data validation, model testing, and performance-evaluation techniques.

About Expression

With a depth of experience that enables us to bring dimension to advanced software solutions, we empower our customers to achieve diverse objectives. Our determination overcomes limitations and our intelligent software analyzes, predicts, and evolves to create new possibilities for Defense, Law Enforcement, and Space missions.

Founded in 1997 and headquartered in Washington DC, Expression is a leader in providing data fusion, data analytics, software engineering, information technology, and electromagnetic spectrum management solutions to National Security missions. We focus on creating immediate and sustainable value via agile delivery of custom solutions built through continuous engagement with our customers.

Recognized as the #1 fastest-growing small business Government contractor on the prestigious Washington Technology Fast 50 list, Expression has received numerous distinctions including recognition as a Top 20 Big Data Solutions Provider by CIO Review.

What they are building

Our capabilities in Machine Learning/ AI, Software Development, Data Science/ Analytics, Spectrum Engineering, and Systems Engineering have made us an essential partner in high-stakes Defense, Federal Law Enforcement, and Space initiatives.

With a highly strategic approach, we design technical solutions tailored to optimize your environment and meet your most complex needs. Our highly skilled teams leverage human-centered design and agile development methodologies to ensure that you are central to the design and delivery process. Our AI-driven solutions help you make critical decisions and take decisive action across your range of operations.