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Pacific Northwest National Laboratory Logo

Senior Backend Software Engineer III (Richland, WA)

Pacific Northwest National Laboratory

Salary not specified
Dec 26, 2025
Richland, WA, US
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PNNL is seeking to advance groundbreaking technologies that support national security initiatives by developing revolutionary capabilities for processing multi-modal intelligence data with unprecedented speed and scale.

Requirements

  • Fluency in Python, with proficiency in C-Sharp/.Net, Go, JavaScript/TypeScript, [Java, C/C++, Rust]
  • AWS/Azure architecture, Kubernetes orchestration, Infrastructure as Code, [GCP, Multi-cloud, Edge computing]
  • S3, Elasticsearch/OpenSearch, PostgreSQL, MongoDB, Redshift, Delta Lake, Vector stores
  • Agentic AI systems, LLMs, model deployment & orchestration, MLOps platforms, distributed training, model serving at scale, vector databases, graph analytics
  • Data fusion, GEOINT processing, signals analysis, threat correlation
  • Spark/Databricks, Kafka/streaming, data lake/mesh architectures, real-time analytics, distributed computing
  • Agile/SAFe methodologies, GitLab Enterprise, advanced CI/CD, security-first DevOps

Responsibilities

  • Architect and lead the development of mission-critical AI systems
  • Design systems at scale in support of mission objectives
  • Drive technical strategy for some of the nation's most sophisticated intelligence and security applications
  • Develop scalable microservices architectures that coordinate across multiple domains
  • Build robust API gateways for classified environments
  • Architect service mesh implementations that handle the nation's most sensitive traffic
  • Lead distributed system design processing data from hundreds of sources simultaneously

Other

  • This position is based in Richland, WA and requires an onsite presence Monday through Thursday, with Friday as required by business needs.
  • Requires the ability to obtain and maintain a federal security clearance.
  • U.S. Citizenship
  • Background Investigation: Applicants selected will be subject to a Federal background investigation and must meet eligibility requirements for access to classified matter in accordance with 10 CFR 710, Appendix B.
  • Drug Testing: All Security Clearance positions are Testing Designated Positions, which means that the applicant selected for hire is subject to pre-employment drug testing, and post-employment random drug testing.