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Knowledge Graph Engineer Jobs in Washington (NOW HIRING)

ClearEdge

Application Engineer IV

Laurel, MD · On-site

As an Application Engineer IV, you will support Knowledge Graph systems, designing and maintaining software that enables complex data relationships and powers essential applications, while ...

Hatch IT

Sr. Director, Generative & Agentic AI

Reston, VA · Hybrid

$210K - $240K/yr

Build agentic systems that leverage the Knowledge Graph for reasoning, task planning, and orchestration. * Introduce agentic capabilities that improve internal engineering and operational workflows.

Navtech, Inc.

Technical Data Architect

Washington, DC · On-site

... depth knowledge and experience in one or more of the following technologies: • Azure Cloud services: Web and Mobile Apps, Databases, Integration, Developer Tools SQL, NoSQL, Neo4j Graph, Triple ...

Enterprise Knowledge

Semantic Modeler

Arlington, VA · On-site

$120K - $135K/yr

Work closely with engineering teams (internal and/or client-side) to support and ensure optimal ... Willingness and ability to develop new skills, especially ontology and knowledge graph development ...

Enterprise Knowledge

Semantic Modeler

Arlington, VA · On-site

$120K - $135K/yr

Work closely with engineering teams (internal and/or client-side) to support and ensure optimal ... Willingness and ability to develop new skills, especially ontology and knowledge graph development ...

Cisco

Applied AI Scientist

Arlington, VA · On-site

Collaborate with engineering, product, and data science teams to understand requirements ... and knowledge-graph-augmented modeling. * Expertise in constructing and operating on large-scale ...

Cisco

Applied AI Scientist

Mclean, VA · On-site

Collaborate with engineering, product, and data science teams to understand requirements ... and knowledge-graph-augmented modeling. * Expertise in constructing and operating on large-scale ...

Cisco

Applied AI Scientist

Rockville, MD · On-site

Collaborate with engineering, product, and data science teams to understand requirements ... and knowledge-graph-augmented modeling. * Expertise in constructing and operating on large-scale ...

Cisco

Applied AI Scientist

Washington, DC

Collaborate with engineering, product, and data science teams to understand requirements ... and knowledge-graph-augmented modeling. * Expertise in constructing and operating on large-scale ...

Axle

Data Science Fellow - AI/NLP

Rockville, MD

Experience with knowledge graphs, ontologies, graph databases, graph algorithms, or semantic data ... Hands-on experience with prompt engineering, structured JSON extraction, schema validation, tool ...

Cisco

Applied AI Scientist

Ashburn, VA · On-site

Collaborate with engineering, product, and data science teams to understand requirements ... and knowledge-graph-augmented modeling. * Expertise in constructing and operating on large-scale ...

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Knowledge Graph Engineer jobs near you
Infographic showing various Knowledge Graph Engineer job openings in Washington as of July 2026, with employment types broken down into 92% Full Time, 4% Part Time, and 4% Contract. Highlights an 89% Physical, 4% Hybrid, and 7% Remote job distribution.
Graph Database Engineer (2026-0080)

Graph Database Engineer (2026-0080)

Acclaim Technical Services

Chantilly, VA • On-site

Full-time

Posted 15 days ago

Job description

Acclaim Technical Services, founded in 2000, is a leading cyber operations, intelligence solutions and operations, network infrastructure, engineering and business enablement and enterprise operations company supporting a wide range of U.S. Federal agencies. We are an Employee Stock Ownership Plan (ESOP) company, which is uncommon within our business sector. We see this as a significant strength, and it shows: ATS is consistently ranked as a top workplace among DC area firms and continues to grow.
JOB DESCRIPTION
We are looking for an experienced Systems Software Engineer to join our team, interested in designing, developing and maintaining essential software systems. The optimal candidate will have demonstrated experience integrating solutions with graph databases, such as JanusGraph. They will also have a strong background in systems software development, experience with 3rd party system integration, expertise in ElasticSearch, and a solid understanding of data modeling concepts. This is a fantastic opportunity to work on a challenging project that requires innovative solutions and collaborative problem-solving.
KEY RESPONSIBILITIES
  • Design, develop, test, and deploy scalable and efficient software solutions
  • Collaborate with cross-functional teams to identify and prioritize project requirements
  • Participate with code reviews and ensure high-quality, modular, and reusable code
  • Troubleshoot and debug issues in the application, including performance optimization and error handling
  • Stay up-to-date with industry trends and emerging technologies, applying this knowledge to improve our application
  • Design and implement data models that meet the needs of the application, ensuring data consistency and integrity

EDUCATION AND EXPERIENCE
  • Bachelor’s Degree in Computer Science, Electrical or Computer Engineering or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience.
  • 5+ years of related software development experience.

REQUIRED QUALIFICATIONS
  • 5+ years of experience in systems software development in NodeJS
  • Strong proficiency working with graph databases (for example JanusGraph) and graph query languages
  • Strong understanding of software design patterns, principles and best practices
  • Excellent problem-solving skills, with the ability to work effectively in a team environment
  • Basic understanding of data modeling concepts, including entity-relationship, data normalization, and denormalization
  • Experience with Git workflows, including feature branching, pull requests and code reviews
  • Ability to work effectively in a Linux-based development environment
  • TS/SCI with Polygraph

DESIRED QUALIFICATIONS
  • Experience with Node.js, Express, MongoDB and Cassandra
  • In-depth knowledge of ElasticSearch, including indexing, querying and aggregation
  • Knowledge of containerization leveraging Kubernetes
  • Familiarity with CI/CD pipelines and automation tools such as Jenkins or Argo CD
  • Hands-on experience working with message brokers such as RabbitMQ or AWS SQS

EQUAL EMPLOYMENT OPPORTUNITY (EEO) STATEMENT

ATS is committed to a program of equal employment opportunity without regard to race, color, ethnicity, national origin, ancestry, citizenship, sex, pregnancy, marital status, sexual orientation, age, religion/creed, hairstyles and hair textures, handicap/disability, genetic information/history, military/veteran status, or any other characteristic or condition protected by applicable law. We support the employment and advancement in employment of individuals with disabilities and of protected veterans, and we treat qualified individuals without discrimination on the basis of their physical or mental disability or veteran status.

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