Principal Machine Learning Engineer to serve as a hands-on technical leader for machine learning, predictive modeling, scoring, decisioning, and applied AI initiatives. This role will primarily focus on building, validating, deploying, and improving machine learning models, while also bringing principal-level judgment to problem definition, model design, stakeholder engagement, and production readiness.
Hands-On Model Development
Build, test, validate, and improve machine learning models for scoring, prediction, prioritization, risk detection, engagement, intervention targeting, and decision support.
Perform exploratory data analysis, data quality assessment, feature engineering, model training, model selection, and performance evaluation.
Develop practical ML models that balance predictive performance, explainability, stability, maintainability, and business usefulness.
Work with structured, semi-structured, and operational data to create model-ready datasets and reusable features.
Use tools such as Python, SQL, Spark, Databricks, MLflow, scikit-learn, XGBoost, or similar platforms and libraries.
Move quickly from data exploration to prototype to validated model to production-ready capability.
Required Qualifications
Professional experience in machine learning, data science, software engineering, analytics engineering, applied AI, or related technical fields.
5+ years of hands-on machine learning model development experience, including feature engineering, model training, validation, evaluation, and iteration.
3+ years of experience deploying, operationalizing, or supporting models in production or business-critical environments.
Strong hands-on experience with Python and SQL.
Experience with modern ML and data platforms such as Databricks, Spark, MLflow, Snowflake, Azure, AWS, or similar technologies.
Strong understanding of model evaluation, calibration, thresholding, score interpretation, monitoring, drift, retraining, and production ML lifecycle management.
Experience translating ambiguous business problems into concrete ML designs, model requirements, validation plans, and measurable outcomes.
Ability to explain model behavior, model performance, assumptions, limitations, and tradeoffs to both technical and non-technical stakeholders.
Strong engineering discipline, including clean code, reproducibility, versioning, testing, documentation, and maintainability.
Ability to work independently as a senior hands-on contributor while also providing technical leadership and modeling judgment.
Scoring, Scorecards, and Transparent Models
Production ML and MLOps
Product and Rapid-Build Execution
Generative AI and AI Automation
Requirement Shaping and Stakeholder Partnership
Principal Machine Learning Engineer • Philadelphia, Pennsylvania, United States
Lockheed Martin is shaping the future of defense through cutting edge radar and missile defense technologies, and we want you to help write the next chapter.As the premier developer of active elect... Show more
The Senior ALM Modeler will build and analyze sophisticated models for insurance products, investments and/or portfolios to increase company risk adjusted returns.Leverage advanced knowledge of act... Show more
Join Our Team at Rancho BioSciences!As we continue to grow, Rancho BioSciences is seeking an experienced and dynamic R&D Consulting Principal to join our team.This role is critical in driving r... Show more
Position Summary Our Deloitte AI & Engineering team works to transform technology platforms, drive innovation, and help make a significant impact on our clients' success.You'll work alongside tale... Show more
Director, World Model & Agentic Learning.Johnson & Johnson Innovative Medicine is recruiting a Director, World Model & Agentic Learning to join our Data, Data Science & AI organization.This is a ne... Show more
My client is seeking a technically driven Applications Engineer to support customer-facing engineering activities and provide technical expertise for specialized industrial products and systems.Thi... Show more
Project Engineer is being responsible for management of all aspects of the construction of the various projects at all stages.Must possess strong analytical, organizational, planning and communicat... Show more
Enterprise Solutions Principal.Locations: Atlanta | Austin | Boston | Brooklyn | Chicago | Dallas | Denver | Detroit | Durham | Houston | Miami | Minneapolis | Nashville | New York | Philadelphia |... Show more
Join an international company with lots of opportunity to grow! A leading program management firm is in search of a Data Engineer who will analyze, document, & implement data solutions to enabl... Show more
Since its launch 6 years ago, over 60MN users have earned and withdrawn over $250MN! The platform is rated 4.TrustPilot with over 230k+ reviews, establishing Freecash as one of the highest-rated op... Show more
Director, Artificial Intelligence (AI).Location: Virtual, US, 99999 Business Unit: Nul.The Director, Artificial Intelligence, will own and deliver the division's AI-driven value creation agenda.Thi... Show more
EY-Parthenon - AI Business Solutions - Director.Location: New York Other locations: Anywhere in Region Salary: Competitive Date: Jun 24, 2026.At EY, we're all in to shape your future with confidenc... Show more
Principal Product Manager, Platform.Bentley is creating an open platform for the built and natural environment to empower software developers to build digital twin experiences.We believe in advanci... Show more
Are you a collaborative Software Engineering Lead looking to work for a mission driven global organization?.As Engineering LeadYou will lead and manage a small team of engineers, fostering their gr... Show more
If you are a current Jazz employee please apply via the Internal Career site.The information below covers the role requirements, expected candidate experience, and accompanying qualifications.Jazz ... Show more
Medical Solutions Direct Hire is seeking a Mammography Technologist for a job in Point Pleasant Boro, New Jersey.Job Description & Requirements.Medical Solutions Direct Hire Job ID #998381.About Me... Show more
Junior Data Scientist With Data Engineering SkillsSeeking a motivated junior data scientist with data engineering skills to join our tech client's analytics and engineering teams.This is an excitin... Show more
Founding Head of Engineering, Agentic AI.Reputable legal technology (LegalTech) company using AI to provide affordable legal services.The Company is seeking a Founding Head of Engineering for Agent... Show more
Career renew is recruiting for one of its clients a head of product - ai - this is a fully remote role for candidates based in est to cet timezones.Salary range: 180-225k usd base plus benefits.We'... Show more
We are seeking a hands-on Lead Product Manager to define, build, and ship AI-enabled platform products built on top of healthcare-grade data services and APIs.This role is ideal for a product leade... Show more
