Palantir Data Engineer

Guidehouse Inc. is seeking an onsite Palantir Data Engineer in Washington, DC to design, build, and operate ontology driven data products within Palantir Foundry. You will concentrate on semantic data modeling, governance, and ontology backed analytics for case management and operations. This role offers a competitive annual salary and a comprehensive benefits package, with opportunities for professional growth in a collaborative, mission-focused environment.

Benefits

• Medical, prescription, dental, and vision coverage
• Personal and family sick time plus company paid holidays
• Potential discretionary incentive bonus
• Parental leave and adoption assistance
• 401(k) retirement plan
• Basic and supplemental life insurance
• Health Savings Account, plus dental, vision, and dependent care Flexible Spending Accounts
• Short-term and long-term disability
• Student loan payoff assistance
• Tuition reimbursement, professional development, and certifications
• Skills development programs
• Employee referral program
• Corporate sponsored events and community outreach
• Emergency back-up childcare program
• Mobility stipend

Responsibilities

• Design, implement, and maintain Palantir Foundry Ontologies, covering entities, relationships, properties, actions, and permissions
• Translate business processes into clear, reusable entity and relationship models
• Enforce semantic consistency across datasets with standardized definitions, naming conventions, and relationship patterns
• Evolve ontologies while preserving lineage, backward compatibility, and data contracts
• Build ingestion pipelines into Foundry from APIs, relational databases, object storage, file drops, and external partners
• Create transformation logic to materialize ontological entities and relationships from raw and curated data
• Implement incremental processing and change data capture patterns to keep ontology backed data current
• Optimize pipeline performance and reliability while separating raw, curated, and ontology backed layers
• Produce analysis ready datasets for case views, entity timelines, dashboards, cohorts, and trend reporting
• Enable self service analytics by ensuring ontology backed datasets are intuitive, well documented, and reusable
• Support both human workflows and analytical or ML usage from the same semantic foundation
• Document datasets and entities with ownership, descriptions, and business definitions
• Maintain end to end lineage from source systems to ontological entities
• Implement policy based access controls and secure handling aligned to compliance requirements
• Operationalize data quality checks tied to mission critical entities
• Monitor pipelines and ontology backed datasets using metrics, logs, and alerts
• Troubleshoot failures, conduct root cause analysis, and implement preventive improvements
• Support DEV, TEST, PRE-PROD, and PROD environment promotions with repeatable and auditable processes
• Collaborate with platform engineering, security, analytics, and application teams to align ontology design with operational needs
• Communicate complex ontology and data concepts to technical and non technical stakeholders
• Participate in design and architecture reviews related to ontology evolution and data modeling standards

Requirements

• Bachelor’s degree required
• Minimum of 3 years building and operating production data pipelines and data models
• Hands-on experience with Palantir Foundry, or strong data engineering capabilities with rapid ramp
• Palantir Foundry Ontology experience including entity and relationship modeling
• Palantir Foundry Ontology experience with ontology backed actions and workflows
• Palantir Foundry Ontology experience covering permissioning and governance
• Strong SQL skills and proficiency in at least one data engineering language (Python preferred; Scala/Java acceptable)
• Experience implementing ETL/ELT pipelines, incremental processing, and transformation best practices
• Familiarity with governance fundamentals such as metadata, lineage, access controls, and data quality
• Strong communication skills and experience partnering with product and mission stakeholders

Technologies

• Palantir Foundry
• Palantir Foundry Ontology
• SQL
• Python
• Scala
• Java
• Databricks
• Spark

Nice to have

• Palantir Application Developer experience creating operational apps and workflows on the ontology
• Bachelor’s degree in Engineering, Computer Science, Information Systems, or related field, or equivalent practical experience
• Palantir AIP experience including ontology backed document understanding, entity extraction, enrichment, and governance controlled human review
• Generative AI assisted coding experience for pipeline development, transformations, and ontology evolution while maintaining data quality
• Experience supporting ontology first designs for case management systems
• Knowledge of entity resolution, relationship extraction, and graph based modeling
• Familiarity with Databricks, Spark, or lakehouse architectures in hybrid environments
• Exposure to CI/CD practices for data pipelines and ontology changes

Travel and clearance

• Up to 25 percent travel may be required
• Ability to obtain Public Trust clearance

Compensation

Salary range: $113,000 to $188,000 per year.