Contract

Machine Learning Data Engineer

Updated on 9/17/2026

Potomac

Potomac

11-50 employees

Environmental analysis, planning, and sustainability consulting

Compensation Overview

$120k - $140k/yr

No H1B Sponsorship

Bethesda, MD, USA

In Person

Bachelor's

Category
Data & Analytics (1)
Required Skills
Data Lake
Microsoft Azure
Python
Airflow
Data Visualization
SQL
Machine Learning
ETL
Data Engineering
AWS
REST APIs
Data Modeling
Data Governance
Google Cloud Platform

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Requirements
  • A bachelor's degree in Computer Science, Data Engineering, Engineering, or a related field, or equivalent experience.
  • At least 4 years of experience in data engineering or related roles.
  • Strong proficiency in Python and SQL.
  • Hands-on experience building and operating data pipelines and workflows.
  • Experience with modern data platforms, including data lakes, data warehouses, or lakehouse architectures.
  • Familiarity with orchestration tools such as Airflow, Dagster, or Prefect and data transformation frameworks.
  • Understanding of data modeling, schema design, and data quality best practices.
  • Experience integrating data from APIs and third-party systems.
  • Strong problem-solving skills and ability to work independently in a fast-paced environment.
  • Excellent communication skills and ability to work with technical and non-technical stakeholders.
Responsibilities
  • Design, build, and maintain scalable data pipelines that ingest data from multiple internal and external sources, including APIs, SaaS platforms, databases, and files.
  • Develop and manage a centralized data lake or lakehouse to standardize and curate data for analytics, reporting, and machine learning use cases.
  • Implement ELT and ETL processes to clean, validate, transform, and model data into trusted datasets.
  • Build and maintain machine-learning-ready datasets and feature pipelines that support experimentation and production models.
  • Ensure data quality, freshness, and reliability through monitoring, alerting, and automated validation checks.
  • Partner with analytics and business teams to define data requirements, metrics, and reporting outputs.
  • Support downstream data consumption for BI tools, dashboards, operational reporting, and partner data exports.
  • Apply best practices for data governance, security, access controls, and documentation.
  • Collaborate cross-functionally to deliver scalable, maintainable data solutions aligned with business priorities.
  • Continuously improve the performance, cost efficiency, and reliability of the data platform.
Desired Qualifications
  • Experience supporting machine learning workflows, including feature engineering, training datasets, or machine learning pipelines.
  • Familiarity with cloud platforms such as AWS, Azure, or Google Cloud Platform.
  • Experience with streaming or near-real-time data pipelines.
  • Knowledge of data governance, security, and compliance best practices.
  • Prior experience in financial services, fintech, or regulated data environments.
  • Experience working in a high-growth or startup environment.

Potomac (PHE) is a consulting firm that addresses environmental, planning, and technology challenges for federal and private-sector clients. It helps with environmental analysis, compliance and sustainability, and site evaluation and planning. How it works: teams of engineers, scientists, and planners draw on their expertise, a broad network of industry and government partners, and information-technology tools to manage complex programs and deliver reports, assessments, and plans. What makes it different: the company combines environmental work, planning, and tech support in one service area, emphasizes responsiveness and cost-effectiveness, and has a 30-year track record of delivering results for government and private clients. Its goal is to solve today’s environmental, climate, energy, and national security challenges by providing reliable analysis, documentation, and planning services.

Company Size

11-50

Company Stage

N/A

Total Funding

N/A

Headquarters

Gaithersburg, Maryland

Founded

1988

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Simplify Jobs

Simplify's Take

What believers are saying

  • Goodfellow's April 2025 BAS and STP acquisitions reinforce Potomac's role inside a broader materials platform.
  • Goodfellow says Potomac supports its US growth and one-stop-shop strategy, expanding cross-sell.
  • Potomac's September 2026 employment page shows no open positions, signaling stable staffing.

What critics are saying

  • Potomac has no open positions on September 6, 2026, indicating muted growth momentum.
  • Goodfellow's 2025-2026 roll-up can dilute Potomac's autonomy as integration shifts to headquarters.
  • A major contract loss could strand Halethorpe capacity and force a sale or shutdown.

What makes Potomac unique

  • Goodfellow's August 2026 site frames Potomac as a Baltimore microfabrication hub for micron-scale work.
  • Potomac handles polymers, metals, ceramics, and glass, spanning prototypes through production.
  • Its ISO 13485-certified Halethorpe facility targets medical devices, biotech, and electronics.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Health Savings Account/Flexible Spending Account

Parental Leave

Commuter Benefits

Disability Insurance

Paid Vacation

Company News

Engineering Update
Jun 27th, 2024
Goodfellow Acquires Potomac Photonics for US Expansion

Goodfellow, owned by Battery Ventures, has acquired microfabrication specialist Potomac Photonics, marking its first US manufacturing footprint. This strategic move aims to enhance Goodfellow's presence in the medical device sector and microfluidics. The acquisition provides Goodfellow with a state-of-the-art manufacturing plant in Baltimore, Maryland, and expands its product range and post-processing capabilities. CEO Simon Kenney highlighted the potential for supporting customers from research to production.

PHE
Apr 27th, 2022
PHE partners with Limno Tech Inc.

PHE, in partnership with LimnoTech, prepared a supporting technical report “ Nuclear Power Decommissioning Practices: Case Studies and Recommendations for the Great Lakes Basin.”