Principal Engineer, Plant Design Integration System OnePrincipal Engineer, Plant Design IntegrationBellevue, WARemote$69–$116 / hourThe ideal candidate will bring a broad nuclear engineering background, strong knowledge of NRC regulations, and the ability to lead cross-functional technical decisions affecting the overall plant design. Responsibilities: Support the development and maintenance of the Reactor Plant architecture and programs, ensuring integration of complex technical areas spanning design, analysis, licensing, and testing.
PRINCIPAL / STAFF BACKEND ENGINEER — DISTRIBUTED SYSTEMS Widenet ConsultingPRINCIPAL / STAFF BACKEND ENGINEER — DISTRIBUTED SYSTEMSSeattle, WashingtonStrong candidates for this track have built the data layer at search companies, content platforms, data infrastructure businesses, or SaaS products where managing large volumes of complex documents is core to the product. The core technical challenge is building systems that stay fast, fair, and predictable regardless of how much variance exists across customer workloads — and doing so without a dedicated SRE or platform team to hand things off to.
NewPrincipal Engineer, Seismic CSA Integration and Oversight System OnePrincipal Engineer, Seismic CSA Integration and OversightBellevue, WARemote$69–$115 / hourPerform technical reviews of work products, including seismic analysis, soil-structure interaction (SSI) analysis, and probabilistic assessments. Support the development of plant level requirements and strategies related to seismic design and licensing activities for advanced nuclear reactor projects.
NewMid-Level Project Engineer - Fisheries ACS Professional StaffingMid-Level Project Engineer - FisheriesRedmond, WA$95,000–$112,000 / yearOur client, an engineering firm specializing in renewable energy, water, and environmental solutions, is seeking a Mid-Level Project Engineer – Fisheries to support the design and construction of fish passage projects, including technical and nature-like fishways. The ideal candidate is a licensed PE (or committed to licensure) with experience in fisheries or structural engineering, proficiency in AutoCAD and Revit/MEP, and familiarity with regulatory and permitting processes.
NewPrincipal Applied Scientist MicrosoftPrincipal Applied ScientistRedmond, WA$142,800–$274,800 / yearPublications at top conferences like ACL (Association for Computational Linguistics), EMNLP (Empirical Methods in Natural Language Processing), SIGKDD (Special Interest Group on Knowledge Discovery and Data Mining), AAAI (Association for the Advancement of Artificial Intelligence), WSDM (Web Search and Data Mining), COLING (International Conference on Computational Linguistics), WWW (World Wide Web Conference), NIPS (Neural Information Processing Systems), ICASSP (International Conference on Acoustics, Speech, and Signal Processing), etc. Bachelors Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 6+ years related experience (e.g., statistics, predictive analytics, research) OR Masters Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 4+ years related experience (e.g., statistics, predictive analytics, research).
NewPrincipal Data Scientist WeyerhaeuserPrincipal Data ScientistSeattle, WA$131,082–$196,766 / yearWe are seeking an experienced Principal Data Scientist to provide technical leadership and passionate about applying machine learning, statistics, experimentation, and optimization techniques to solve complex business problems across manufacturing, operations reliability, supply chain, and product quality domains. For over 125 years, our Weyerhaeuser team has been making a difference in the world – from the seedlings we plant, to the forests and trees we nurture, we ensure every acre is managed with diligence, patience and pride.
Principal Recruiter, Principal Engineer Recruiting, PE Recruiting Amazon.com IncPrincipal Recruiter, Principal Engineer Recruiting, PE RecruitingSeattle, WAAs a client lead recruiter, you"ll have the unique opportunity to impact leadership teams across Amazon"s diverse technology landscape, building relationships with Directors and VPs while shaping the future of Amazon"s senior engineering community. Mid-day might involve leading a client update meeting where you present market analysis and candidate pipeline progress, followed by conducting in-depth technical assessments with potential candidates.
Principal Software Engineer / Principal AI Engineer - Commerce Platforms Microsoft CorpPrincipal Software Engineer / Principal AI Engineer - Commerce PlatformsRedmond, WA$142,800–$274,800 / yearExperience building or leading AI-powered solutions, production AI applications, LLM-enabled experiences, agentic workflows, intelligent automation, applied machine learning capabilities, or AI-assisted engineering practices. You will partner across engineering, product, research, data, security, compliance, and business teams to solve ambiguous technical challenges, deliver durable platform capabilities, and create business-critical impact at global scale.
Principal Electrical Engineer (2026-065) (WA, Kirkland) Astronics CorpPrincipal Electrical Engineer (2026-065) (WA, Kirkland)Kirkland, WA$152,072–$242,920 / yearAstronics Advanced Electronic Systems (AES) is seeking a Principal Electrical Engineer with a strong track record of implementing advanced power conversion technologies into aerospace-grade power supply and power conversion products. This role requires extensive knowledge of power conversion technologies-including resonant converter topologies and digitally controlled power supplies-along with strong leadership, mentoring, and presentation skills.
Principal Electrical Engineer (2026-065) AstronicsPrincipal Electrical Engineer (2026-065)Kirkland, WashingtonAstronics Advanced Electronic Systems (AES) is seeking a Principal Electrical Engineer with a strong track record of implementing advanced power conversion technologies into aerospace-grade power supply and power conversion products. This role requires extensive knowledge of power conversion technologies—including resonant converter topologies and digitally controlled power supplies—along with strong leadership, mentoring, and presentation skills.
Principal Electrical Engineer - RF Helion Energy IncPrincipal Electrical Engineer - RFEverett, WAYou will integrate plasma science with high-power electrical engineering to deliver reliable, scalable, and high-fidelity plasma and energy system measurements that directly inform performance optimization, generator commissioning, and future device development. Design, test, and troubleshoot high-voltage electrical systems including power delivery to pulsed magnets, energy recovery circuits, and internal power networks used during pulsed generator operation.
Principal Electrical Engineer Helion Energy IncPrincipal Electrical EngineerEverett, WAYour work will focus on high-power electrical systems including energy delivery to pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. Since Helions founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward.
Principal Engineer - Transmission and Asset Integration Puget Sound Energy IncPrincipal Engineer - Transmission and Asset IntegrationBellevue, WA$124,600–$207,400 / yearThis position serves as a principal engineering and technical expert within PSE's Energy Supply Merchant organization, providing technical leadership and subject matter expertise for merchant transmission portfolio management, transmission service strategy, asset integration, resource delivery, and regional transmission matters. The Principal Engineer leads complex technical, tariff, commercial, and operational analyses to support reliable and cost-effective delivery of PSE's generation resources, power purchase agreements, tolling agreements, capacity agreements, and other portfolio resources.
Principal Engineer - Transmission And Asset Integration Puget Sound EnergyPrincipal Engineer - Transmission And Asset IntegrationBellevue, WA$124,600–$207,400 / yearThis position serves as a principal engineering and technical expert within PSE's Energy Supply Merchant organization, providing technical leadership and subject matter expertise for merchant transmission portfolio management, transmission service strategy, asset integration, resource delivery, and regional transmission matters. The Principal Engineer leads complex technical, tariff, commercial, and operational analyses to support reliable and cost-effective delivery of PSE's generation resources, power purchase agreements, tolling agreements, capacity agreements, and other portfolio resources.
Principal Engineer, Data Center Architect DigitalOceanPrincipal Engineer, Data Center ArchitectSeattle, WA$184,000–$231,000 / yearWhat You'll Be Doing: Defining and owning DigitalOcean's reference architectures for next-generation Data Center environments, navigating shifts in technology, networking topologies, and AI/ML hardware roadmaps to keep facility designs future-proofed. Architecting end-to-end power topologies with vendor teams to support diverse hardware across medium to ultra-high-density rack deployments, moving from 415VAC to 800VDC.
Principal Engineer, Data Center Deployment Ops DigitalOcean LLCPrincipal Engineer, Data Center Deployment OpsSeattle, WA$184,000–$231,000 / yearWhat You'll Be Doing: Defining and owning DigitalOcean''s reference architectures for next-generation Data Center environments, navigating shifts in technology, networking topologies, and AI/ML hardware roadmaps to keep facility designs future-proofed. Architecting end-to-end power topologies with vendor teams to support diverse hardware across medium to ultra-high-density rack deployments, moving from 415VAC to 800VDC.
Senior Principal Engineer, Central Ops & Systems Docker IncSenior Principal Engineer, Central Ops & SystemsSeattle, WARemote$219,000–$352,000 / yearAs Senior Principal Engineer, you will establish strategic technical plans that span the company systems/data architecture and the end-to-end employee experience, make critical architectural decisions that affect Dockers entire internal systems portfolio, and drive technical execution of cross-company initiatives that directly enable every Dockhand. Youll work at the technical intersection of AI, platform infrastructure, developer SDLC, corporate systems, and Docker products, ensuring all systems work together seamlessly to support Dockers most precious resources: our employees.
Principal Engineer - Product Integrity Blue Origin Enterprises LPPrincipal Engineer - Product IntegritySeattle, WA$157,059–$219,882.60 / yearand/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing (CDL drivers only), vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. You will solve unprecedented challenges in ensuring hardware survives the rigors of launch, orbit, and long-duration deployment-pioneering physics-of-failure methodologies, predictive reliability frameworks, and AI-driven engineering approaches that redefine how high-stakes hardware is designed, qualified, and validated.
Principal Engineer - TeraWave RF and Optical Systems Blue Origin Enterprises LPPrincipal Engineer - TeraWave RF and Optical SystemsSeattle, WA$332,694–$465,771.60 / yearand/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. Direct the architecture of high-fidelity HITL frameworks that replicate orbital dynamics - delay/Doppler profiles, azimuth/elevation tracking, handovers, and real-time kinematics - using CATR/anechoic ranges, channel emulators, GNSS simulators, hexapods/positioners, and precision RF and optical reference instrumentation.
Principal Engineer, Spacecraft Test Development The Talent MinePrincipal Engineer, Spacecraft Test DevelopmentSeattle, WA$170,000–$195,000 / yearThe position works cross-functionally with Systems Engineering, Production AI&T, and all spacecraft subsystem teams (EPS, ADCS, Communications, C&DH, Flight Software, etc.) to meld verification requirements with real-world system performance variability and constraints into robust, executable test campaigns that minimize test-to-test variability and risk for human error. The Satellite Test Development Engineer is responsible for transitioning satellite tests from engineer-driven ‘new product’ tests to routine, highly automated, efficient test processes that ensure every satellite off the production line is repeatably and robustly tested before shipping and launch.