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Principal Engineer, Software
Bellevue, Washington, United States
$134k-$241k/yr OnsiteFull Time
7+ YOEBachelor's in CS/Engineering plus 7 years related experience (or advanced degree with 5 years). 7+ years technical engineering experience, analytical and communication skills, software development and technical writing.
virtualization, microservices, software-defined networking, network functions virtualization, big data platforms
2mo
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Principal Mechanical Engineer
Seattle, Washington, United States
$139k-$292k/yr OnsiteFull Time
10+ YOESenior mechanical engineer with leadership in design, reliability, manufacturing, and thermal management; expertise in CAD, FEA, and cross-functional collaboration.
CAD (ProE, SolidWorks), FEA, CFD, FloTHERM, Icepak, Java, Python
1mo
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Principal Process Engineer
Redmond or Seattle
$134k-$154k/yr OnsiteFull Time
12+ YOEBS in engineering with 12+ years in pharma/biotech; SME in cell culture and chromatography; GMP single-use systems; project leadership.
2mo
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Principal Software Engineer
Seattle, Washington, United States
$160k-$250k/yr OnsiteFull Time
8+ YOE8+ years of software engineering, leadership of complex initiatives, distributed systems, LLMs, AI-native apps, strong communication, ownership.
LLM frameworks, Generative AI frameworks, AI agent frameworks
2mo
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Principal Environmental Engineer
Seattle or Bellevue
$165k-$205k/yr HybridFull Time
15+ YOE15+ years environmental consulting; ABET-accredited BS or MS in civil/environmental engineering; WA PE license; remediation design and regulatory experience.
GIS
1mo
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Principal Engineer - Stablecoin
Jersey City or Seattle or Plano or San Francisco or Charlotte
$157k-$230k/yr HybridFull Time
Experience designing and building secure, scalable financial blockchain apps and smart contracts; multi-cloud, multi-region; cloud providers (AWS, GCP, Azure); web3 protocols; Solidity/Rust; cryptography; DeFi; code reviews and security analysis; integration with external systems.
Solidity, Rust, Web3, Truffle, Hardhat, Remix, Web3.js, Ethers.js, Terraform, AWS, GCP, Azure
1mo
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Principal Process Engineer
Redmond or Seattle
$134k-$154k/yr OnsiteFull Time
12+ YOESenior process engineer with 12+ years in pharma/biotech life sciences; SME in cell culture biopharmaceutical manufacturing, chromatography, filtration, viral clearance, and drug substance formulation; strong GMP and CQV experience.
DeltaV, GMP, CQV, DCS, PLC, software, validation
1mo
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Principal Engineer, Spacecraft Development Test
Tukwila, Washington, United States
$200k-$230k/yr OnsiteFull Time
12+ YOEBachelor's degree; 12+ years spacecraft integration/test; leadership of multiple campaigns; automation; cross-disciplinary collaboration; strong engineering judgment.
2mo
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Principal Software Engineer, Receiver Products
Seattle, Washington, United States
$240k-$300k/yr HybridFull Time
12+ YOE12+ years software engineering; distributed systems at scale; zero-to-one leadership; backend emphasis; security/compliance in regulated industries; strong communication.
Backend, Distributed systems, REST APIs, Event-driven architectures, Databases, Security, Compliance
3mo
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Principal Engineer - Agentic AI Applications
Seattle, Washington, United States
$168k-$230k/yr HybridFull Time
8+ YOELead architecture for agentic AI applications; 12+ years software engineering; 4+ years leadership; production LLM/agentic systems; Python, backend frameworks; RAG, vector DBs; strong cross-functional communication.
Python, TypeScript, Node.js, LangGraph, AutoGen, CrewAI, RAG pipelines, vector databases, tool-calling APIs
1mo
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Principal Engineer, Autonomy
South San Francisco or Remote or New York City or Toronto or Seattle
$300k-$350k/yr HybridFull Time
15+ YOESenior IC with 15+ years building production autonomy systems; shipper of autonomy components; expert in perception, prediction, or planning; strong C++/Python; ROS/ROS 2; safety-focused.
C++, Python, ROS, ROS 2, Deep Learning
2mo
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Principal Software Engineer
Seattle, Washington, United States
$202k-$300k/yr HybridFull Time
15+ YOE15+ years in software product development; SaaS; cloud infra; .NET preferred; polyglot; CI/CD; AI/LLMs; C#, React, TypeScript; Docker/Kubernetes; Azure/AWS; SQL/NoSQL; Elasticsearch; security and governance for enterprise.
.NET, C#, React, TypeScript, Docker, Kubernetes, Azure, AWS, SQL, NoSQL, Elasticsearch, Lucene
2mo
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Principal Fuel Cycle Engineer
Everett, Washington, United States
$214k-$255k/yr OnsiteFull Time
12+ YOE12+ years in chemical process design; degree in Chemical, Mechanical, or Nuclear Engineering; expertise in transport phenomena, thermodynamics, and reaction engineering; ability to lead multi-disciplinary efforts and set design direction.
PFD, P&ID, HAZOP, Modeling
2mo
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Principal Engineer, Mission Software
Arvada or Los Angeles or San Francisco or Seattle or Washington
HybridFull Time
8+ YOE3+ MgmtLead complex software and systems engineering in aerospace/defense; architecture focus; leadership; government programs; security clearance readiness.
Programming, Software Architecture, Distributed Systems, APIs, Operator tooling, Mission-critical applications
2mo
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Principal Site Reliability Engineer
Bellevue or New York City
$164k-$213k/yr HybridFull Time
10+ YOE3+ Mgmt10+ years in software engineering, cloud architecture, and/or SRE; strong AWS, Kubernetes, Terraform; Spark; CI/CD; leadership; excellent communication.
AWS, EKS, ECR, RDS, SQS, SNS, VPC, MWAA, S3, Terraform, CloudFormation, Kubernetes, kubectl, Helm, ArgoCD, CircleCI, Spark, EMR, Databricks, Glue, OTel, DataDog, GenAI tools
1mo
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Principal Safety Methods Engineer
Bellevue, Washington, United States
$168k-$252k/yr OnsiteFull Time
8+ YOE8+ years in system-level thermal-hydraulic analysis; degree in Mechanical, Nuclear, or Chemical Engineering; experience with code assessment and experimental data; knowledge of SQA/NQA-1 preferred.
RELAP5-3D, TRACE, SAS, system analysis tools
2mo
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Principal EMI/EMC Engineer
Kent, Washington, United States
$129k-$328k/yr OnsiteFull Time
5+ YOE5+ years in EMI/EMC with aerospace experience; advanced degree in electrical engineering or physics; MIL-STD-461/464, NASA-STD-4003 experience; on-site in Kent, WA; strong RF and EMC testing skills.
SPICE, HFSS, CST, HFSS, EMI receivers, spectrum analyzers, LISNs
3mo
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Principal Engineer Electronics OR Sr. Principal Engineer Electronics (Levels 3 or 4)
Oak Harbor, Washington, United States
$93k-$140k/yr OnsiteFull Time
5+ YOESTEM degree with 5–8 years of related engineering experience; active DoD Top Secret clearance with SCI access; CI Polygraph; SAP clearance; DoD 8140 IAT II; Linux proficiency; MQ-4C sensor/communication expertise; willing to relocate and travel up to 10%.
Linux, MQ-4C sensors, link16, MFAS Radar, EO/IR, CISSP, CCNP, CCNA Security, Security+CE, SPECTRUM ANALYZERS, NETWORK ANALYZERS, SIGNAL GENERATORS, MPO/TC operator system
3w
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Principal Engineer - Transmission and Asset Integration (Bellevue, WA, US, 98004)
Bellevue, Washington, United States
$125k-$207k/yr HybridFull Time
10+ YOEBS in engineering or PE, ~10+ years engineering experience, advanced technical expertise in transmission and asset integration, experience leading projects, strong communication and collaboration skills; safety-sensitive role with pre-employment drug screening.
OATI
1mo
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Principal Design Verification Engineer (Silicon Engineering)
Sunnyvale or Austin or Irvine or Redmond
$210k-$310k/yr OnsiteFull Time
10+ YOEBachelor’s in electrical/computer engineering or computer science; 10+ years in design verification and test bench development.
UVM, OVM, VMM, Python, RTL
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