6 sr security software engineer jobs at 3 companies in Kennewick, WA

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Senior Software Engineer III
Richland or Seattle
$133k-$210k/yr HybridFull Time
Pacific Northwest National Laboratory
Pacific Northwest National Laboratory: Department of Energy research laboratory focused on scientific innovation.
1+ YOERequires hands-on Python experience and software engineering expertise with scalable system design, cloud-native deployments, ETL/data pipelines, distributed processing, and security clearance eligibility.
Python, .NET, C#, Go, C++, Rust, Git, Copilot, Claude, Cursor, AWS, Azure, GCP, Docker, Kubernetes, REST, GraphQL, gRPC, SQL, NoSQL, Spark, Kafka, Flink, Ray, LangChain, LlamaIndex, AWS Glue, Azure Data Factory, Step Functions
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Lead Software Engineer IV
Richland or Seattle
$161k-$255k/yr HybridFull Time
Pacific Northwest National Laboratory
Pacific Northwest National Laboratory: Department of Energy research laboratory focused on scientific innovation.
Extensive software engineering experience with hands-on Python; advanced expertise in AI/ML, distributed systems, cloud, data platforms, and technical leadership; ability to obtain federal security clearance and U.S. citizenship required.
Python, C#/.NET, Go, C++, PyTorch, TensorFlow, JAX, LangChain, LlamaIndex, LangGraph, Docker, Kubernetes, Kafka, RabbitMQ, REST, GraphQL, gRPC, Airflow, Prefect, Step Functions, Spark, Flink, Ray, Parquet, Iceberg, Delta, AWS, Azure, GCP, SQL, CI-CD
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Lead DevOps/Platform Engineer IV
Seattle or Richland
$161k-$255k/yr HybridFull Time
Pacific Northwest National Laboratory
Pacific Northwest National Laboratory: Department of Energy research laboratory focused on scientific innovation.
3+ YOERequires qualifying education and software engineering experience, hands-on Python development, U.S. citizenship, and eligibility for a federal security clearance and background investigation.
Python, Go, C#, Rust, Agentic AI, large language model (LLM), APIs, microservices, CI/CD, MLOps, DevOps, HSPD-12, Personal Identity Verification (PIV), Local Site Specific Only (LSSO)
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Senior Electrical Engineer 2 - Mission Critical
Richland, Washington, United States
$100k-$153k/yr HybridFull Time
Sargent & Lundy
Sargent & Lundy: Engineering and consulting services for the power industry.
7+ YOEBSEE or MSEE from an ABET-accredited program, 7+ years of electrical engineering experience, U.S. citizenship, security clearance eligibility, and experience with electrical distribution, instrumentation, codes, and analysis software.
ETAP, SKM Power Tools, Visual, AGI32, Python, MATLAB, Microsoft Excel, automation, AI
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Senior DevOps/Platform Engineer III
Seattle or Richland
$133k-$210k/yr HybridFull Time
Pacific Northwest National Laboratory
Pacific Northwest National Laboratory: Department of Energy research laboratory focused on scientific innovation.
1+ YOERequires qualifying degree and software engineering experience, hands-on Python development, and ability to obtain a federal security clearance. U.S. citizenship, background investigation, and drug testing required.
Python, C#/.NET, C++, Go, APIs, CI/CD, LLM, microservices
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Developer Support Specialist
Walla Walla, Washington, United States
RemoteFull Time
Lucayan Technology Solutions
Lucayan Technology Solutions: Provides secure technology solutions supporting national defense and intelligence missions.
5+ YOEU.S. citizen with active Tier 1 federal background, bachelor's or equivalent, 5+ years full-stack/app development, proficiency in C#, JavaScript, .NET Core MVC, Oracle 19c, RMF and secure coding practices.
C#, JavaScript, .NET Core MVC, Oracle 19c, ACAS, SCAP, DISA STIG Viewer, eMASS, GitHub Enterprise, AWS GovCloud, DoDAF