NewSoftware Engineer - Embedded Systems | Marine Autonomous Vehicle JobotSoftware Engineer - Embedded Systems | Marine Autonomous VehicleSeattle, WA$145,000–$190,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. You'll split time between maintaining existing float control software and driving new R&D development, working directly with hardware on the bench to build, test, and refine bare-metal C code running on ARM microcontrollers.
Embedded Solutions Engineer – Space Systems JobotEmbedded Solutions Engineer – Space SystemsSeattle, WA$126,000–$250,000 / yearFPGA Integration (Optional): Experience interfacing with or developing alongside FPGAs, including familiarity with common communication interfaces (AXI, PCIe, custom parallel buses),register-mapped peripheral access from embedded Linux or bare-metal environments, and collaborative bring-up with digital design engineers. Excellent Communication Skills: Effectively convey ideas and communicate technical topics with engineering, build staff, and operations; run self-directed design reviews and participate in reviews of parallel systems.
Sr Electrical Engineer, Last Mile Delivery & Technology, Last Mile Delivery & Technology Amazon.com Services LLCSr Electrical Engineer, Last Mile Delivery & Technology, Last Mile Delivery & TechnologyBellevue, WAExperience designing complex embedded electronics architectures and interconnections — including SoCs, MCUs, FPGAs, DRAM, storage, digital communication interfaces (e.g., Ethernet, USB, CAN, I2C, SPI), and high-speed routing. * Develop electrical schematics and provide oversight for component placement and layout activities of printed circuit board assemblies (PCBAs) — including component selection, floor planning, signal and power integrity review.
NewTest Engineer System OneTest EngineerBellevue, WA$52–$85 / hourThe selected candidate will work closely with multidisciplinary engineering teams, scientists, and technicians to ensure testing is completed safely, accurately, and in accordance with project requirements. Bachelor's degree in Mechanical Engineering, Nuclear Engineering, Electrical Engineering, Chemical Engineering, or a related engineering discipline.
NewFuel Handling System Design Engineer System OneFuel Handling System Design EngineerBellevue, WARemote$52–$85 / hourSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Develop analyses such as thermal, seismic, structural, pipe stress, heat transfer, and others, integrating results into plant design delivery.
NewNuclear Plant Integration Engineer (Test Abstracts and Specifications) System OneNuclear Plant Integration Engineer (Test Abstracts and Specifications)Bellevue, WARemote$69–$115 / hourSystem One is seeking an experienced Nuclear Plant Integration Engineer to coordinate and support the creation, development and management of post-construction and startup test abstracts and test specifications for our client’s Advanced Reactor Demonstration project. The primary focus of this role is developing and fortifying the framework, across the system design engineering teams, for creation and authorship of test procedures, test abstracts and test specifications.
System Transients Analysis Engineer System OneSystem Transients Analysis EngineerBellevue, WARemote$67–$110 / hourThis role will focus on thermal hydraulic and transient analysis activities supporting advanced reactor system design, plant operations analysis, and control system integration. System One is seeking a highly capable and motivated System Transients Analysis Engineer to support an advanced sodium-cooled reactor program.
Senior Test and Integration Engineer LeidosSenior Test and Integration EngineerSeattle, WA$107,900–$195,050If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. You'll contribute to a multidisciplinary team focused on testing, integrating, and validating advanced maritime technologies, ensuring system reliability and performance from prototype design to full-scale system deployment for ongoing Navy missions.
NewRAC System Engineer (Process & I&C) System OneRAC System Engineer (Process & I&C)Bellevue, WARemote$54–$90 / hourDevelop engineering designs supporting lifecycle factors including operability, maintainability, and reliability. Previous experience with commercial nuclear reactors and systems, high temperature pressure vessels, or similar systems (highly desired).
NewCRD System Design Engineer (Mechanical) System OneCRD System Design Engineer (Mechanical)Bellevue, WARemote$54–$90 / hourThe selected candidate will collaborate with project managers, design engineers, analysts, test engineers, supply chain teams, and other engineering disciplines to support the successful development and deployment of advanced reactor technology. The successful candidate will demonstrate strong technical leadership, engineering excellence, attention to detail, and the ability to thrive in a fast-paced, collaborative engineering environment.
Software Development Engineer II, SCOT-Inbound, Inventory Routing and Replenishment Amazon.com Services LLCSoftware Development Engineer II, SCOT-Inbound, Inventory Routing and ReplenishmentBellevue, WAYou design at the product level with heavy involvement through all phases of the SDLC using concepts that may include Service Oriented Architecture, caching, load balancing, non-relational databases, microservices, sharding, n-tiered architecture, cloud and/or map-reduce. - 1+ years of designing and developing large-scale, multi-tiered, multi-threaded, embedded or distributed software applications, tools, systems, and services using: C#, C++, Java, or Perl experience.
System Design Engineer System OneSystem Design EngineerBellevue, WARemote$50–$80 / hourThe ideal candidate will act as a system-level engineer, working across multiple disciplines to develop, integrate, and refine system designs from concept through commissioning. Develop and review technical documents such as System Design Descriptions (SDDs), Interface Control Documents (ICDs), and Engineering Design Specifications.
NewRAC System Design Engineer (Mechanical) System OneRAC System Design Engineer (Mechanical)Bellevue, WARemote$54–$90 / hourThe selected candidate will collaborate with project managers, design engineers, analysts, test engineers, and multidisciplinary engineering teams to support the successful design, integration, and deployment of this first-of-a-kind reactor technology. This role will support the ongoing development of a passive reactor cooling system designed to continuously remove heat through natural convection, providing safe and reliable cooling without reliance on pumps or operator actions.
Electrical Engineer II- #26-17370 US Tech Solutions, Inc.Electrical Engineer II- #26-17370Seattle, WAProvide Domain Expertise: Operate comfortably across a wide range of electrical engineering sub-disciplines, applying generalist knowledge in circuit design, power systems, signal processing, and embedded systems to assess model performance. In this role, you will bridge the gap between traditional electrical engineering and artificial intelligence by helping our team develop, validate, and stress-test AI tools tailored for hardware, circuit design, and electrical systems analysis.
Certification Engineer JobotCertification EngineerMedina, WA$74,000–$95,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. The successful candidate will be responsible for a diverse range of certification-related tasks, including developing training material on certification/ODA procedures and ensuring compliance with FAA regulations.
NewSr. Electrical Engineer MicrosoftSr. Electrical EngineerRedmond, WA$119,800–$234,700 / yearMasters Degree in Electrical Engineering, Computer Engineering, or related field AND 3+ years technical engineering experience OR Bachelors Degree in Electrical Engineering, Computer Engineering, or related field AND 5+ years technical engineering experience. To achieve this goal, the Cloud Hardware Systems Engineering (CHSE) team is instrumental in defining and delivering operational measures of success for hardware manufacturing, improving the planning process, quality, delivery, scale and sustainability related to Microsoft cloud hardware.
Systems Lead LeidosSystems LeadBellevue, WA$131,300–$237,350If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. Leidos’ Undersea Systems Division is a recognized leader in C4ISR technologies, delivering innovative, mission-critical solutions across sensor networks, unmanned systems, and tactical platforms.
NewSenior Firmware Engineer MicrosoftSenior Firmware EngineerRedmond, WA$119,800–$234,700 / yearDoctorate in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 1+ year(s) technical engineering experience OR Masters Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 4+ years technical engineering experience OR Bachelors Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 5+ years technical engineering experience OR equivalent experience. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $160,200 - $261,000 per year.
NewFuel Handling Design Engineer System OneFuel Handling Design EngineerBellevue, WA$52–$85 / hourInterface with cross-functional design disciplines (mechanical, instrumentation & controls, civil, nuclear) to develop plant design information and define system design/performance criteria. Physical requirements include sitting and/or standing for extended periods, bending/stooping, grasping/gripping, fine motor control, with minimal physical exertion, including the ability to safely lift up to 25 pounds.
Oliver Wyman, Vector - Aerospace Systems Test Engineer - Seattle, WA Marsh & McLennanOliver Wyman, Vector - Aerospace Systems Test Engineer - Seattle, WASeattle, WAFull timeOliver Wyman Vector is looking for a Lead Systems Test Engineer that will focus on developing and executing test cases, performing system-level testing, and collaborating with cross-functional engineering teams. With offices in more than 70 cities across 30 countries, Oliver Wyman combines deep industry knowledge with specialized expertise in strategy, operations, risk management, and organization transformation.
NewSenior PCIe Bridge Design Verification Engineer MicrosoftSenior PCIe Bridge Design Verification EngineerRedmond, WA$119,800–$234,700 / yearDoctorate in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 1+ year(s) technical engineering experience OR Masters Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 4+ years technical engineering experience OR Bachelors Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 5+ years technical engineering experience OR equivalent experience. 7+ years of related technical engineering experience OR Bachelors degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 5+ years technical engineering experience or internship experience.
Junior I & C Design Engineer System OneJunior I & C Design EngineerBellevue, WA$115–$190 / hourThis role will focus on the development of Instrumentation & Control systems for nuclear island systems, structures, and components (SSCs), working closely with multidisciplinary engineering teams to deliver safe, reliable, and innovative engineering solutions. Bachelor's degree or higher in Controls Engineering, Electrical Engineering, or a related engineering discipline from an accredited university.
NewCommercial Construction Project Engineer HITT ContractingCommercial Construction Project EngineerSeattle, WA$77,000–$82,000 / yearMaster required job-specific and technical skills in order to promote to an assistant superintendent or assistant project manager following the 12-month training program including, but not limited to, the ability to: Set up and maintain jobsite office and all jobsite records, including project directory, construction documents, subcontractor directory, daily reports, submittal logs, RFI logs, subcontractor correspondence, etc. Ability to learn sector- and project-specific software systems, including but not limited to: Microsoft Office 365 (Project, Excel, Word, Outlook, PowerPoint, etc.), ProCore, Adobe Suite, BlueBeam, and JD Edwards software suite.
Mechanical Engineer IV- #26-16937 US Tech Solutions, Inc.Mechanical Engineer IV- #26-16937Redmond, WARapid Prototype Mechanical Design: Design and develop rapid prototypes of mechanical components for AR products, ensuring timely delivery and meeting project specifications. Lead Mechanical Engineering workstreams for electromechanical sensor integration onto wearable hardware, ensuring all mechanical aspects of development, performance, and reliability are met ensuring program success.
Senior Software Engineer InfobloxSenior Software EngineerTacoma, WAStrong hands-on expertise applying agentic and AI‑driven frameworks to elevate engineering productivity, optimize performance, and strengthen system reliability including building Agents, Sub-agents, MCP Servers, Skills etc., Strong hands-on experience with performance engineering in large scale pipelines and active participation in resolving production incidents. Here, how we empower our people is extraordinary: Glassdoor Best Places to Work 2025, Great Place to Work-Certified in five countries, and Cigna Healthy Workforce honors three years running — and what we build is world-class: recognized as CybersecAsia’s Best in Critical Infrastructure 2024 — evidence that when first-class technology meets empowered talent, remarkable careers take shape.
NewSafety Analysis Engineer, Nuclear System OneSafety Analysis Engineer, NuclearBellevue, WARemote$69–$115 / hourThis contract Safety Analysis Engineer role performs deterministic nuclear safety analysis and transient/accident modeling (RELAP5-3D or similar) to support U.S. NRC licensing submittals. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
Senior Staff Software Engineer, Infrastructure RipplingSenior Staff Software Engineer, InfrastructureSeattle, WAYou will shape the systems that determine how software gets built across the company, from local development environments and CI/CD pipelines to agent sandboxes, testing infrastructure, repository architecture, and AI-native development workflows. • Youll work at the center of Ripplings engineering organization, shaping the developer experience for more than 1,000 engineers while defining how AI agents integrate into every stage of the software development lifecycle.
Mechanical Engineer II- #26-17364 US Tech Solutions, Inc.Mechanical Engineer II- #26-17364Seattle, WAProvide Domain Expertise: Operate comfortably across a wide range of mechanical engineering sub-disciplines, applying generalist knowledge in CAD/CAM, thermodynamics, fluid mechanics, and structural analysis to assess model performance. In this role, you will bridge the gap between traditional mechanical engineering and artificial intelligence by helping our team develop, validate, and stress-test AI tools tailored for physical systems and design analysis.
Machine Learning Engineer- Platform OpendoorMachine Learning Engineer- PlatformSeattle, WA$205,000–$281,000 / yearIn this role, you’ll work side-by-side with backend software engineers, data scientists, ML engineers, product managers, and partner engineering and operations teams to turn prototypes and ideas into robust, scalable, and observable production systems. We’re looking for a senior-level Software Engineer to join our Pricing & ML team, leading the design and evolution of the platform and tooling that productionize the machine learning models behind our pricing engine.
NewPrincipal Software Engineer Tableau SoftwarePrincipal Software EngineerBellevue, WAYou will be a leading technical representative across the application stack — negotiating interfaces with peer teams, driving architectural alignment across the product, and setting the bar for non-functional quality (availability, multi-tenancy, security, performance) across GRPC and python application services. • Define SLIs and SLOs for the teams features and services in partnership with Product, design rollout strategy and telemetry that spans pre-release / canary / stagger periods, and lead service ownership: on-call rotations, ops and readiness reviews, runbooks, and automation.
NewSenior Welding Engineer System OneSenior Welding EngineerBellevue, WA$56–$95 / hourSystem One is seeking a Senior Welding Engineer for a yearlong contract role to work as part of a high-functioning team of engineers focused on materials processing, supply chain development and supplier qualification for next generation material and components for sodium-cooled fast reactors. Oversee test programs for qualification of welds, including mechanical properties, burst testing, thermal creep, creep-fatigue, neutron irradiation, thermal aging, and sodium exposure.
NewSMTS/LMTS Full Stack Software Engineer Tableau SoftwareSMTS/LMTS Full Stack Software EngineerSeattle, WAExperience integrating and orchestrating LLMs and AI services using APIs, SDKs, and agent frameworks such as OpenAI APIs, LangChain, MCP, RAG pipelines, tool calling, and vector databases. Our team is shaping the next generation of analytics, delivering seamless, interactive visualization experiences embedded directly into user workflows and integrated with modern platforms to enhance engagement and collaboration.
Mechanical Engineer II- #26-17369 US Tech Solutions, Inc.Mechanical Engineer II- #26-17369Seattle, WAProvide Domain Expertise: Operate comfortably across a wide range of aerospace sub-disciplines, applying generalist knowledge in aerodynamics, propulsion, orbital mechanics, and avionics (GNC) to assess model performance. In this role, you will bridge the gap between traditional aerospace engineering and artificial intelligence by helping the team develop, validate, and stress-test AI tools tailored for aerospace systems, flight dynamics, and structural analysis.
Weld Engineer System OneWeld EngineerBellevue, WA$63–$80 / hourThis is a hands-on, high-impact role where your weld engineering and metallurgy expertise will influence how advanced components are designed, tested, qualified, and transitioned into supplier-ready manufacturing processes. System One is seeking a highly motivated Weld Engineer to support a Materials Development & Qualification team advancing next-generation materials and components for sodium-cooled fast reactors .
Senior Nuclear Safety Analysis Engineer (Accident/Transient Methods) System OneSenior Nuclear Safety Analysis Engineer (Accident/Transient Methods)Bellevue, WARemote$69–$115 / hourOther engineering activities include, but are not limited to, performing accident analyses, contributing to software qualification, participating in hazard analysis, participating in Structures, Systems and Components (SSC) classification, as well as performing verification and validation activities. Familiarity with nuclear design, regulatory requirements, and risk-informed performance-based technology guidance for Non-Light Water Reactors under Regulatory Guide (RG) 1.233 is strongly preferred.
Application Security Engineer OpendoorApplication Security EngineerSeattle, WASet the bar for what "secure by default" looks like for AI-maximalist engineering, including vibe-coded apps, MCP servers, and agent-driven workflows that touch. ● 5+ years of application security or software engineering experience with a security focus, with strong skills in at least one of Python, Go, TypeScript, or Ruby — and the ability to.
NewSoftware Development Engineer Kforce Inc.Software Development EngineerRedmond, WA$60–$67You will build a unified platform that provides a one-stop view enabling stakeholders to evaluate releases across all dimensions (acceptance, performance, security), reducing manual intervention, accelerating approval, and providing end-to-end traceability. 5+ years of experience to build a greenfield self-serve platform; Frontend technologies include JavaScript, TypeScript, HTML, and CSS with microservices architecture.
NewMechanical Analysis and Methods Engineer (Core) System OneMechanical Analysis and Methods Engineer (Core)Bellevue, WARemote$52–$85 / hourIn this role, you will develop analysis methodologies using finite element methods and hand calculations to predict mechanical behavior of reactor core components and develop software to automate analyses. Support testing for validation of mechanical codes and methods, including test requirements, acceptance criteria, prediction, post-processing, and collaboration with test engineers.
NewSenior Mechanical Design Engineer System OneSenior Mechanical Design EngineerBellevue, WA$52–$85 / hourCoordinate and utilize inputs and requirements from Engineering and Project teams to produce equipment and components design solutions, including drawings, models, and specifications. Support continuous learning and application of nuclear industry best practices to maintain the highest quality of engineering design and proactively identify process change/enhancement opportunities.
Senior Software Engineer - AI RipplingSenior Software Engineer - AISeattle, WAFor office-based employees (employees who live within a defined radius of a Rippling office), Rippling considers working in the office, at least three days a week under current policy, to be an essential function of the employees role. Successful individuals on our team tend to operate with autonomy and alacrity, have strong customer empathy, and an ability to drive outcomes across the entire engineering stack from data ingestion through modeling and into production.
Program Chief Engineer LeidosProgram Chief EngineerLake Stevens, WA$131,300–$237,350If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. Leidos’ Undersea Systems Division is a recognized leader in C4ISR technologies, delivering innovative, mission-critical solutions across sensor networks, unmanned systems, and tactical platforms.
Subsea Lead Program Engineer LeidosSubsea Lead Program EngineerRedmond, WA$131,300–$237,350Strong technical focus, ability to support team leadership, and establish strong, collaborative working relationships with government customers, technical staff, senior managers, and peers. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
Remote Traveling Fuel Superintendent (Commercial) JobotRemote Traveling Fuel Superintendent (Commercial)Seattle, WARemote$110,000–$140,000 / yearHigh-Visibility Fuels Superintendent opportunity with a rapidly growing construction firm building large-scale fueling and energy centers across Hawaii and the Western U.S. This role is travel-heavy, with per diem and housing fully covered on Hawaii projects, and offers the chance to lead complex field operations from dirt work through turnover. Ideal candidates bring hands-on experience with underground fuel storage tank installation and removal, C-store or casino fueling buildouts, and strong coordination across subcontractors, inspectors, and jurisdictions.
NewSubject Matter Expert, Rotating Machinery System OneSubject Matter Expert, Rotating MachineryBellevue, WARemote$84–$135 / hourExperience in high temperature and multi-discipline integration, highly desired with nuclear handling process systems, fluid systems, or fluid system component design a plus. The successful candidate will possess a high degree of trust and integrity, communicate openly and display respect and a desire to foster teamwork.
Technical Lead LeidosTechnical LeadEverett, WA$131,300–$237,350If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. Leidos’ Undersea Systems Division is a recognized leader in C4ISR technologies, delivering innovative, mission-critical solutions across sensor networks, unmanned systems, and tactical platforms.
Oliver Wyman, Vector - Aerospace Senior Systems Test Lead - Seattle, WA Marsh & McLennanOliver Wyman, Vector - Aerospace Senior Systems Test Lead - Seattle, WASeattle, WAFull timeWith offices in more than 70 cities across 30 countries, Oliver Wyman combines deep industry knowledge with specialized expertise in strategy, operations, risk management, and organization transformation. The firm has more than 6,000 professionals around the world who work with clients to optimize their business, improve their operations and risk profile, and accelerate their organizational performance to seize the most attractive opportunities.
Electrical Test Engineer II - New Glenn Component Test Blue Origin LLCElectrical Test Engineer II - New Glenn Component TestSeattle, WAFull timeand/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. ITAR RequirementsTo conform to U.S. Government commercial space technology export regulations, including the International Traffic in Arms Regulations (ITAR), 8 U.S.C. § 1324b(a)(3), applicants for employment at Blue Origin must be a U.S. citizen or national, lawfully admitted for permanent residence into the U.S. (i.e. current green card holder), or lawfully admitted as a refugee or granted asylum under 8 U.S.C. § 1157-1158.
Electrical Test Engineer II Belcan CorpElectrical Test Engineer IIKent, WAFull timeJob Title: Integration Engineering Technician Location: Kent, WAJob Type: 6 mo ContractHours: 40/week Pay Rate: $66.34 - $70.77/hrShift: Candidates must be flexible with shift availability - Schedule shift could be weekends working 40/hr a week OT as neededWe are seeking a highly skilled Electrical Test Engineer to join our team in Kent, WA, supporting the integrated system testing of our launch vehicles. Write and maintain automation scripts in Python to support data acquisition, test execution, and data post-processing.* Collaborate with mechanical, electrical, software, and systems engineers to develop comprehensive test plans and procedures.*
Systems Engineer V Spectraforce Technologies Inc.Systems Engineer VRedmond, WAFull timeIn particular:Controlling linear motion stagesControlling hexapod positionersControlling robot armsKnowledge about camera optics and acquisition settingsExperience with VR or AR systemsData analysis and visualization. You will work closely with teams developing novel sensors, silicon, and integrated products to guarantee successful calibration and establish clear interfaces and quality gates.
Project Engineer (Systems - TPSS) Colliers Engineering & DesignProject Engineer (Systems - TPSS)Seattle, WA$130,000–$165,000 / yearFull timeRamos CS, now a part of Colliers Engineering & Design, is actively hiring a Project Engineer (Systems - TPSS) to perform a wide variety of professional engineering work in a field setting on a transit capital program's Transit Power Substation System (TPSS) portfolio. The Project Engineer is directly responsible for field oversight of TPSS construction, installation, and commissioning activities, and reviews the work of Authority, State, and Contractors in accordance with the applicable Design Criteria Manual, Construction Manual, and all governing specifications.