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Artificial Intelligence (AI) Engineer with an active TS/SCI with a Full Scope Polygraph Security Clearance Required, Hybrid in Annapolis Junction, MD

Remote, USA Full-time Posted 2026-06-12

Nextdoor is seeking an Artificial Intelligence (AI) Engineer with an active TS/SCI Full Scope Polygraph Security Clearance. The role involves designing, prototyping, and integrating AI advancements into existing systems to enhance intelligence operations.

Responsibilities

  • Must have an active TS/SCI Full Scope Polygraph security clearance
  • Lead the design and development of AI-driven solutions from conception to deployment, ensuring seamless integration with the existing software architecture. This includes prototyping new models, writing production-quality code, and maintaining existing AI systems
  • Serve as a key technical liaison, collaborating with cross-functional teams including system engineers, software developers, and domain experts. Effectively present and articulate recommended AI approaches, discussing the tradeoffs and implications of different implementations with both technical and non-technical stakeholders
  • Conduct Exploratory Data Analysis (EDA) on diverse datasets (both structured and unstructured) to inform the data model, identify data quality issues, and determine optimal input formats for AI models
  • Develop, train, and evaluate a variety of machine learning models, ensuring they meet performance and reliability requirements. Implement robust testing and validation strategies to ensure models are accurate and unbiased
  • Stay current with the latest advancements in AI and machine learning, continuously seeking opportunities to apply new technologies and methodologies to improve existing systems and solve complex problems
  • Have experience with the Amazon Web Services (AWS) cloud computing platform and machine learning operations (MLOps) tools for deploying and managing machine learning models at scale

Skills

  • Must have an active TS/SCI Full Scope Polygraph security clearance
  • 1 to 20 years of experience is required with a bachelor's degree. 4 years of additional experience can be substituted for a bachelor's degree. 4 years less experience is ok for candidates with a graduate degree
  • Lead the design and development of AI-driven solutions from conception to deployment, ensuring seamless integration with the existing software architecture
  • Serve as a key technical liaison, collaborating with cross-functional teams including system engineers, software developers, and domain experts
  • Conduct Exploratory Data Analysis (EDA) on diverse datasets (both structured and unstructured) to inform the data model, identify data quality issues, and determine optimal input formats for AI models
  • Develop, train, and evaluate a variety of machine learning models, ensuring they meet performance and reliability requirements
  • Stay current with the latest advancements in AI and machine learning, continuously seeking opportunities to apply new technologies and methodologies to improve existing systems and solve complex problems
  • Have experience with the Amazon Web Services (AWS) cloud computing platform and machine learning operations (MLOps) tools for deploying and managing machine learning models at scale

Benefits

  • Medical insurance
  • Retirement plan
  • PTO

Company Overview

  • Nextdoor is a private social networking platform that connects neighbors for them to exchange helpful information, goods, and services. It was founded in 2011, and is headquartered in San Francisco, California, USA, with a workforce of 501-1000 employees. Its website is http://nextdoor.com.
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