Lead Engineer FlexLead EngineerFontana, CA$105,000–$144,400 / yearCrown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). What a typical day looks like: Manage, schedule, and track all Engineering tasks and related assigned project work; schedules, directs, and trains other engineers and designers in their project tasks and deliverables.
Automation Engineer , RME AIR Amazon.com IncAutomation Engineer , RME AIRSan Bernardino, CAYou will understand, maintain and troubleshoot material handling control systems, including PLC/PC controllers and industrial networks such as Ethernet, ControlNet, DeviceNet, Profibus, motor control systems, servo drives, frequency drives, and electrical distribution systems. As an Automation Engineer, you will play a crucial role in maximizing equipment reliability and operational performance in our fulfillment centers by providing proactive controls automation and technical support.
Automation Engineer Amazon.com IncAutomation EngineerPerris, CAYou will understand, maintain and troubleshoot material handling control systems, including PLC/PC controllers and industrial networks such as Ethernet, ControlNet, DeviceNet, Profibus, motor control systems, servo drives, frequency drives, and electrical distribution systems. About the Role: As an Automation Engineer, you will play a crucial role in maximizing equipment reliability and operational performance in our fulfillment centers by providing proactive controls automation and technical support.
Sr. Software Development Engineer - Indoors GIS AI and Reality EsriSr. Software Development Engineer - Indoors GIS AI and RealityRedlands, CaliforniaYou will lead the development of advanced Indoor GIS capabilities that combine AI, computer vision, 3D reality capture, and spatial data to automate indoor mapping workflows and create innovative geospatial products from floor plans, 3D scans, and 360° imagery. If you enjoy solving challenging problems and working with technologies like Large Language Models, computer vision, 3D graphics, and geospatial systems, this role offers the opportunity to make a significant impact on the future of Indoor GIS.
NewProduct Test Engineer II - Feature Server EsriProduct Test Engineer II - Feature ServerRedlands, CaliforniaYour work will involve discovering innovative ways to improve the products we deliver to our customers worldwide, finding ways to stress our code and build, automate and maintain test scenarios. Reduce manual testing efforts by building and maintaining automated test scripts using tools like Selenium, Appium or SilkTest.
Product Test Engineer II - Geodatabase EsriProduct Test Engineer II - GeodatabaseRedlands, CaliforniaCollaborate with software engineers, product engineers, and other stakeholders to test ArcGIS Pro and ArcGIS Enterprise functionality related to Data Management including Geodatabase, Enterprise Databases and Data Store, as well as data management services such as: Utility Network service; Feature service; Network Diagram service; Version Management service; Geodata service; WFS service, and more. Your work will involve discovering innovative ways to improve the products we deliver to our customers worldwide, finding ways to stress our code and build, automate and maintain test scenarios.
NewProduct Review Engineer I IAPMOProduct Review Engineer IOntario, CaliforniaFounded in 1926, The International Association of Plumbing and Mechanical Officials (IAPMO ® ) employs a diverse team of world-class professionals that includes engineers, scientists, technicians, and industry experts and leaders. We are seeking a motivated and detail-oriented Product Review Engineer I to join our Research & Testing Certification team.
Software Development Engineer (23550) Falken Tire CorporationSoftware Development Engineer (23550)Rancho Cucamonga, CAThis role will also design, develop, and manage solutions across multiple E-Business Suite modules, including General Ledger (GL), Accounts Receivable (AR), Cash Management (CM), Fixed Assets (FA), Accounts Payable (AP), Purchasing (PO), Order Management (OM), Inventory (INV), Warehouse Management (WMS), and Trade Management. The Software Development Engineer also known as Oracle Applications Development will be responsible for end-to-end production support, including ticket resolution and partnering with users to troubleshoot and resolve Oracle ERP issues.
Automation Engineer Mach IndustriesAutomation EngineerVictorville, CaliforniaYou will play a critical role in building and optimizing the most advanced automated manufacturing lines, integrating robotics and control systems, and driving efficiency across production processes. Mach participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S. The salary range for this role is an estimate based on a wide range of compensation factors, inclusive of base salary only.
Lead Engineer Crown Technical SystemsLead EngineerFontana, California$105,000–$144,400 / yearCrown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). Read and understand all customer documentation provided: specifications, General Assembly drawings, plan view drawings, electrical single line and schematic drawings, wiring diagrams, detail fabrication drawings, BOMs, etc.
Sr. Software Development Engineer - Gen AI EsriSr. Software Development Engineer - Gen AIRedlands, CaliforniaIf you are passionate about geospatial technologies, AI-driven data quality management, and building scalable, high-performance distributed solutions, this role offers the opportunity to work on cutting-edge technologies that shape how organizations build, validate, and maintain accurate geospatial assets. As part of the Professional Services division, you will work closely with product teams, domain experts, and technical specialists to create robust, production-ready software that transforms and advances geospatial data quality.
NewDevSecOps Engineer II - SaaS EsriDevSecOps Engineer II - SaaSRedlands, CaliforniaIf you’ve worked at a software company and enjoy building secure, scalable platforms, this DevSecOps Engineer role offers the chance to apply that experience to the world’s largest geospatial Software as a Service offering. Work across teams developing Esri’s SaaS, desktop, and enterprise server products, along with the extensions and apps hosted inside of them covering various domains of geospatial data and operations.
Sr. Software Development Engineer - Web Developer EsriSr. Software Development Engineer - Web DeveloperRedlands, CaliforniaYou’ll collaborate with cross-functional teams to deliver scalable solutions built on ArcGIS to visualize, analyze, and interact with geospatial data, drive intelligent automation and predictive insights through AI, and bring real-world spatial data into digital environments through reality capture and digital twins. As a software development engineer, you’ll contribute to building responsive, accessible, and maintainable applications that help users engage with spatial intelligence and operational systems spanning multiple domains and shape how users engage with spatial intelligence and operational systems across a variety of industries.
Senior Powertrain Engineer - Electric Motor ElDorado National CaliforniaSenior Powertrain Engineer - Electric MotorRiverside, CaliforniaKey Responsibilities: Develop electric motor solutions for electric propulsion systems; being able to model, architect, and optimize a propulsion system; Gather requirements for eMotor via internal customer, market demands, and competitive assessments; Integrate, optimize the eDrive design with vehicle and motor control team; Perform root cause failure analysis troubleshooting of eMotor system; Identify and develop opportunities for product improvements; Participate in field performance reviews and communicate technical knowledge to field support personnel; Understanding electric motor losses and flux, develop test plans and perform measurements; Lead the team to characterize the motor and operate the end-of-line (EOL) test; Explore and design innovative motor technologies. Position Requirements: BS degree in Electrical Engineering, Mechanical Engineering, or similar engineering field; 5 years of experience with electrical machine, or electric drive product development; Ability to solve problems, troubleshoot, and perform root cause analysis.
Vehicle Power System Engineer ElDorado National CaliforniaVehicle Power System EngineerRiverside, CaliforniaFounded in 1975, ENC (ElDorado National – California) is a leading U.S. transportation manufacturer specializing in design, engineering, and end-to-end production of heavy-duty buses, shuttles, and cargo vehicles through a custom-build, mixed-model assembly process. Partner with field reliability, field service, failure analysis, unit assembly manufacturing, and design teams to ensure alignment on cross-functional issues and necessary mitigation actions.
Software Engineer III ElDorado National CaliforniaSoftware Engineer IIIRiverside, CaliforniaFounded in 1975, ENC (ElDorado National – California) is a leading U.S. transportation manufacturer specializing in design, engineering, and end-to-end production of heavy-duty buses, shuttles, and cargo vehicles through a custom-build, mixed-model assembly process. In addition, the engineer will mentor and support junior developers while working closely with cross-functional teams and external partners to drive the development and implementation of new software solutions.
Scene Service Product Engineer II EsriScene Service Product Engineer IIRedlands, CaliforniaBecome a 3D service and ArcGIS Enterprise technology expert and use your expertise to help software users successfully create and maintain 3D services and layer items. As a Product Engineer, your focus will be on ArcGIS Enterprise and ArcGIS Online to test and improve scene layer creation and maintenance workflows on the web.
Technical Consultant – Enterprise Data Engineer (Geospatial Data & Platforms) EsriTechnical Consultant – Enterprise Data Engineer (Geospatial Data & Platforms)Redlands, CaliforniaThis role combines enterprise data engineering, geospatial technology, and mission impact, giving you the opportunity to solve complex data challenges in environments where performance, scale, and reliability are essential. From database design and performance tuning to high availability and data security, your work will ensure that critical geospatial information is delivered reliably to the people who depend on it most.
Product Engineer II – On-premises Kubernetes, ArcGIS Enterprise EsriProduct Engineer II – On-premises Kubernetes, ArcGIS EnterpriseRedlands, CaliforniaJoin our team of talented and passionate engineers and help us build the next generation of ArcGIS Enterprise, a suite of products delivering state-of-the-art geospatial capability to thousands of our customers and millions of users worldwide. Collaborate with software developers, product managers and other cross-functional teams to design, build, and deliver new ArcGIS Enterprise capabilities for self-managed Kubernetes clusters like Red Hat OpenShift, VMware Tanzu, and RKE2.
Software Development Engineer II – CI/CD & Platform Automation (Mission-Focused) EsriSoftware Development Engineer II – CI/CD & Platform Automation (Mission-Focused)Redlands, CaliforniaThis role combines software engineering with DevOps and platform engineering principles, ideal for engineers who are passionate about automation, system reliability, and improving developer productivity in complex environments. Design, implement, and maintain high-speed CI/CD pipelines using GitHub Actions/Azure DevOps for cloud-native workflows and Jenkins for complex, cross-platform on-premises build automation.
Application Engineer III Mesa Energy Systems, Inc.Application Engineer IIIChino, California$54–$68 / hourFull timeAnalyze systems and develop scope of work for controls implementation, create control algorithms, download source code to controllers and manage databases. Essential Duties & Responsibilities: Executes project start-ups, commissioning, testing, and troubleshooting of installed BAS controls and mechanical systems on assigned projects.
Commissioning Engineer ShimmickCommissioning EngineerLake Elsinore, California$90,000–$100,000 / yearFull timeAxia offers electrical, instrumentation, and process controls expertise for water and wastewater treatment; dams and locks; mass transit and rail; alternative energy; power generation and transmission; and commercial building projects. Overview: Join Shimmick’s Axia Electric Team as a Commissioning Field Engineer and play a key role in delivering complex electrical and process control systems for critical infrastructure projects across Southern California.
Electrical Engineer - Buildings WSP Global IncElectrical Engineer - BuildingsRiverside, CA$85,200–$121,770 / yearWork as an individual or as part of a cross-functional team of engineers, planners, scientific, and construction professionals to execute project work, assist with laying out installations, calculating costs and quantities of material/equipment/labor, and ensuring project work conforms with specifications, permit applications, compliance documentation, and regulatory and technical analysis memos. Assist with the research, design, concept development, and construction of transmission and distribution substations, power distribution, power regulation, renewable energy, as well as protection and control systems in a wide variety of contexts (utilities, transportation, building, and Federal, State, and local government projects).
Associate Mechanical Engineer - Buildings WSP Global IncAssociate Mechanical Engineer - BuildingsRiverside, CA$79,300–$109,000 / yearThe Associate Mechanical Engineer will support the planning, design, and delivery of mechanical building systems for a variety of projects, including commercial, healthcare, higher education, life sciences, mission critical, mixed-use, and other building types. WSP USA is providing the compensation range that the company in good faith believes it might pay and/or offer for this position within the state of Colorado, based on the successful applicant's education, experience, knowledge, skills, and abilities in addition to internal equity and specific geographic location.
Senior Electrical Engineer - Buildings WSP Global IncSenior Electrical Engineer - BuildingsRiverside, CA$100,800–$147,000 / yearWSP USA is providing the compensation range that the company in good faith believes it might pay and/or offer for this position within the state of Colorado, based on the successful applicant's education, experience, knowledge, skills, and abilities in addition to internal equity and specific geographic location. Any unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation - no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service.
Senior Mechanical Engineer - Buildings WSP Global IncSenior Mechanical Engineer - BuildingsRiverside, CA$100,800–$147,000 / yearThis role is ideal for a motivated engineer who brings experience across healthcare and other complex building sectors, including commercial, higher education, and civic projects, and is looking to grow within a collaborative, design-focused environment. WSP USA is providing the compensation range that the company in good faith believes it might pay and offer for this position, based on the successful applicant's education, experience, knowledge, skills, abilities in addition to internal equity and specific geographic location.
Mechanical Engineer - Buildings WSP Global IncMechanical Engineer - BuildingsRiverside, CA$88,500–$126,600 / yearAny unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation - no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service. WSP USA is providing the compensation range that the company in good faith believes it might pay and offer for this position, based on the successful applicant's education, experience, knowledge, skills, abilities in addition to internal equity and specific geographic location.
NewBuilding Wireman (2nd Shift) Crown Technical SystemsBuilding Wireman (2nd Shift)Fontana, California$18.59–$25.10 / hourCrown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). Report to the Production Manager, the Building Wireman, responsible for installing electrical components and wiring for our enclosure building manufacturing projects.
NewSenior Coordinator - Property & Buildings WSP Global IncSenior Coordinator - Property & BuildingsRiverside, CA$29.72–$42.46 / hourWSP USA is providing the compensation range that the company in good faith believes it might pay and/or offer for this position within the state of Colorado, based on the successful applicant's education, experience, knowledge, skills, and abilities in addition to internal equity and specific geographic location. Any unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation - no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service.
Building Performance Analyst DLR GroupBuilding Performance AnalystRiverside, CA$93,170–$144,430 / yearBe responsible for energy modeling and analysis, daylighting analysis, writing reports for energy life cycle cost analysis, utility incentives as required by the state, code and utilities, and LEED documentation. The Building Performance Analyst will act as an integrated design resource, providing insights and actionable data to project teams to set and achieve building performance goals.
NewMaintenance Technician - Engineer Pyramid Hotel GroupMaintenance Technician - EngineerRiverside, CAFrom being named among the best places to work by respected publications such as USA Today, The Boston Globe, and The Houston Chronicle to earning top travel accolades from Travel + Leisure, Condé Nast Traveler, Forbes Travel Guide, and U.S. News & World Report, these recognitions reflect the culture, service excellence, and commitment to people that define the Pyramid experience. Our platform includes Benchmark Resorts & Hotels, a collection of distinctive independent properties; Axiom Hospitality, our European hotel management company; and PYRAMIDWORKS, which provides integrated workplace and facilities services.
Mechanical Project Engineer 1 IMEG ConsultantsMechanical Project Engineer 1Ontario, California$115,000–$140,000 / yearIMEG is hiring a Mechanical Project Engineer, in Ontario, CA , to lead design efforts as a project manager or lead engineer for low to moderate complexity projects and collaborate with senior staff for the delivery of larger and high complexity projects. Apply today to join IMEG and help deliver civil engineering solutions that create strong sites, successful projects, and lasting community impact.
Construction Project Engineer JLM Strategic Talent PartnersConstruction Project EngineerRancho Cucamonga, California$30–$45 / hourProven computer proficiency accompanied by a strong aptitude for technical applications (proficient in MS Office, Google applications, project management software such as ESub and Procore, Adobe, and ability to learn and operate new software. As the industry leader in staffing for architecture, engineering, and construction projects, JLM has 18,500+ pre-vetted, highly-skilled, and available people ready to power your project within 7 days.
Sr. GIS Solution Engineer – AEC EsriSr. GIS Solution Engineer – AECRedlands, CaliforniaBroad knowledge of ArcGIS from an IT context (such as hardware, storage, security, networking, web services, virtualization, cloud computing). Proactively craft and propose solutions that clarify how GIS brings business value to our customers by addressing the critical challenges they face.
NewC++ Software Engineer I – Maps SDKS EsriC++ Software Engineer I – Maps SDKSRedlands, CaliforniaDevelop excellent software for use in field mapping, data collection, sensor networks, street navigation, and more. Experience with IDEs, compilers, and development tools for Linux, Windows, macOS, iOS, or Android.
Product Development Engineer II Applied Medical Resources CorpProduct Development Engineer IIRancho Santa Margarita, CA$75,000–$120,000 / yearOur unique business model, combined with our dedication to delivering the highest quality products, enables team members to contribute to a larger capacity than is possible in typical positions. The Product Development Engineer works closely with surgeons, cross-functional engineering teams, and manufacturing partners to translate clinical needs into functional, manufacturable designs.
Building Engineer Cbre ValuationBuilding EngineerVictorville, CA$38–$43 / hourOther Job titles: Facilities Engineer, Maintenance Engineer, Building Systems Engineer, Senior Maintenance Technician, HVAC Engineer, HVAC, commercial, EPA Universal, Electrician, Plumber, Service Technician, California Residents: CBRE carefully considers multiple factors to determine compensation, including a candidate's education, training and experience. ABOUT THE ROLE: If you"re a hands-on problem solver with a passion for keeping facilities safe, efficient, and operational, this is your opportunity to grow with a global leader in real estate services.
Product Engineer II - Cloud Infrastructure EsriProduct Engineer II - Cloud InfrastructureRedlands, CaliforniaHands-on experience deploying and managing applications in cloud environments such as AWS, Azure, or Google Cloud, including services like EC2, S3, SQS, Azure Virtual Machines, Storage, Kubernetes, or similar technologies. 2+ years of experience in GIS technologies (ArcGIS Enterprise, ArcGIS Online, or similar) and software testing or software development within an engineering environment.
Sr. Product Test Engineer – Automation, ArcGIS Enterprise EsriSr. Product Test Engineer – Automation, ArcGIS EnterpriseRedlands, CaliforniaWork with feature teams to gather, design, and scope automated test cases and then have them implemented by software development engineers in test. Collaborate with product engineers and software developers to set the vision and scope of automated tests for ArcGIS Enterprise.
Director of Mechanical Engineering (Building Systems) Core States GroupDirector of Mechanical Engineering (Building Systems)Ontario, CARemoteAs the Director of Mechanical Engineering supporting our Architecture and Engineering business unit, you are responsible for leading, coordinating and overseeing all activities, projects and personnel within the mechanical engineering discipline. HEALTHCARE - Competitive health benefits including HSA with employer contribution, life insurance options, and supplemental coverage options, giving you the flexibility to select the coverage that best fits your needs and lifestyle.
Building Maintenance Technician Manpower EngineeringBuilding Maintenance TechnicianOntario, CATemporaryManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2023 ManpowerGroup was named one of the World's Most Ethical Companies for the 14th year - all confirming our position as the brand of choice for in-demand talent.
NewManufacturing Associate III Endologix LLCManufacturing Associate IIICA$25–$30 / hourIn addition, this individual actively contributes to process improvement initiatives, supports training of junior team members, and collaborates cross-functionally with Engineering, Quality, and other support functions to ensure smooth production flow and compliance with regulatory requirements. The Associate III serves as a technical resource on the production floor, assisting in troubleshooting line issues, identifying root causes, and recommending corrective actions.
Building Wireman (2nd Shift) Flex LtdBuilding Wireman (2nd Shift)Fontana, CA$18.59–$25.10 / hourCrown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). What a typical day looks like: Read and interpret schematic drawings, diagrams, blueprints, specifications, work orders, or reports to determine material requirements or assembly instructions.
Senior Electrical Engineer | Ontario, CA IMEG CorpSenior Electrical Engineer | Ontario, CAOntario, CA$130,000–$150,000 / yearThe role also includes working within project budgets, assisting in training and mentoring efforts, and collaborating across disciplines to support education-focused work, with additional exposure to healthcare and public-sector projects, advancing high-performance, energy-efficient design aligned with MEP2050 and AIA2030. In this role, you will provide project direction, engineering solutions, and implementation oversight for electrical systems in buildings, while supporting larger and high complexity projects with limited support from senior staff.
Sr. Product Engineer - ArcGIS Business Analyst Enterprise EsriSr. Product Engineer - ArcGIS Business Analyst EnterpriseRedlands, CaliforniaBecome an ArcGIS Enterprise Business Analyst extension technical expert and collaborate with software developers, product engineers, product managers, and other stakeholders to determine product quality and release readiness. Support the software product life cycle by contributing to software requirements definition, continuous improvement processes, UX design, testing, documentation, release, and support.
Transmission Line Engineer Michael Page InternationalTransmission Line EngineerOntario, California$150,000–$180,000 / yearFull timeJoin a growing Power Delivery platform with a strong backlog of infrastructure projectsWork on high-profile transmission and grid modernization initiativesGain exposure to complex utility programs and long-term career growth opportunitiesCollaborate with experienced technical leaders across multidisciplinary teamsIf you are ready to take the next step in your career as a Transmission Line Engineer, we encourage you to apply today! Contact Lauren Just Quote job ref JN-062026-7043002Job SummarySector: Engineering & ManufacturingSub Sector: Engineering Design and R&DIndustry: Energy & Natural ResourcesWhere: OntarioContract Type: PermanentConsultant Name: Lauren JustJob Reference: JN-062026-7043002Job Nature: Hybrid working
Mechanical Engineer Refrigeration/CAD TDI REFRIGERATIONMechanical Engineer Refrigeration/CADRancho Cucamonga, California$28–$40About TDI Refrigeration: Founded in 1999, TDI Refrigeration designs, builds, and services industrial refrigeration and commercial air conditioning systems across Southern California, Central California, Phoenix, Denver, and the Dallas/Fort Worth area. Perform engineering calculations including refrigerant charge calculations, ventilation calculations, mass and energy balances, and relief valve sizing/basic relief studies.
Airfield Engineer RS&HAirfield EngineerOntario, CA$96,000–$120,000 / yearActivities include the geometric design of runways, taxiways, and aprons; bituminous and concrete pavement design; stormwater and utility infrastructure design; coordination with airports, airlines, FAA and other tenants; and construction administration/management. Joining our Aviation team means an opportunity to explore your potential and apply your diverse skills to serve the large and small airports of the aviation industry as a trusted advisor.
Cybersecurity Engineer Kimley-Horn and Associates IncCybersecurity EngineerRiverside, CAKimley-Horn is seeking a Cybersecurity Engineer to help lead and mature our network security function, with a primary focus on enterprise firewall architecture and operations. If you have a strong networking background and deep hands-on firewall experience-especially in Palo Alto environments-this is an opportunity to truly own and evolve a critical security domain.
Substation Project Engineer David Evans and Associates IncSubstation Project EngineerOntario, CA$120,000–$150,000 / yearPotential office locations include: Los Angeles, CA; Ontario, CA; Santa Clarita, CA; Tustin, CA; Colorado Springs, CO; Denver, CO; Boise, ID; Coeur d''''Alene, ID; Pocatello, ID; Bend, OR; Corvallis, OR; Portland, OR; Salem, OR; Bryan/College Station, TX; Salt Lake City, UT; Bellevue, WA; Bellingham, WA; Everett, WA; Olympia, WA; Seattle, WA; Spokane, WA; Tacoma, WA; Vancouver, WA; Woodinville, WA; or Remote. Key Responsibilities: Create and oversee substation design deliverables from preliminary through IFC plan sets; deliverables may include but not limited to: one-line diagrams, schematics, wiring, general arrangements, conduit, grounding, equipment connection details, design criteria, equipment specifications, and construction specifications.