Graph Data Engineer

Job overview

The Graph Data Engineer role is onsite in Arlington, VA, with compensation of $140,000–$170,000 per year. The role supports a mission-focused data and AI initiative in a Department of Defense environment, helping make complex information more discoverable and usable by analysts, applications, and AI systems.

What you'll do

• Build and operate automated pipelines for source discovery and technical metadata ingestion. Align data elements to enterprise and domain ontologies, maintain provenance and lineage, and develop graph queries and validation checks. Integrate data sources and pipelines with enterprise search and discovery, associate assets with governance metadata and access constraints, and maintain the enterprise semantic map. Partner with AI engineers and mentor junior engineers
• document schema decisions and runbooks.

What we're looking for

Skills & competencies

graph data engineer

knowledge graph

data engineering

arlington va

marathon ts

ts/sci clearance

metadata ingestion

data lineage

ontology

graph databases

ai workflows

python

sql

$140k–$170k

Work arrangement

• Weekend coverage required

Why this role

Requires an active TS/SCI clearance, a bachelor’s degree with five years of relevant experience or equivalent, production data pipeline experience, graph database experience, and API integration experience. Python or Java, SQL, JSON/XML/YAML, and graph query languages are among the stated technical areas.

About the employer

Marathon TS, Inc. is hiring for this role. Industry: Engineering Services. Sector: 54.