NAICS 541330 · Washington

Certified Women-Owned Engineering Services in Washington

29 certified women-owned vendors in Washington under NAICS 541330 (Engineering Services), each with an active WOSB or EDWOSB certification reported from the U.S. SBA Small Business Search.

29 certified vendors · ranked by certification recency & profile depth

01RJS CONSTRUCTION INC

Construction & Trades · Union Gap, Washington
SBA-certified WOSB
WOSB

RJS Construction, Inc. is a Woman & Native American Owned Small Business (WOSB & ISBEE) full-service general contractor founded in 1990 by Shannon & Richard Sevigny. For 36 years, RJS has successfully delivered general and design-build construction projects 18 states and counting. Our reputation has been built on the quality of our construction services and our ability to develop and maintain sound client relationships. These strong relationships have resulted in a client return rate of over 90% over the past twenty-five years. We firmly believe this client loyalty is a testament to our commitment to safety, our dedication to quality and an understanding of our clients’ needs.

02RJS CONSTRUCTION, INC

Construction & Trades · Vancouver, Washington
SBA-certified WOSB
WOSB

RJS Construction, Inc. is a Woman & Native American Owned Small Business (WOSB & ISBEE) full-service general contractor founded in 1990 by Shannon & Richard Sevigny. For 36 years, RJS has successfully delivered general and design-build construction projects 18 states and counting. Our reputation has been built on the quality of our construction services and our ability to develop and maintain sound client relationships. These strong relationships have resulted in a client return rate of over 90% over the past twenty-five years. We firmly believe this client loyalty is a testament to our commitment to safety, our dedication to quality and an understanding of our clients’ needs.

03STELL ENVIRONMENTAL ENTERPRISES INC

Environmental & Waste Services · Redmond, Washington
SBA-certified WOSB, SDVOSB, VOSB
WOSBSDVOSBVOSB

Environmental Services: HTRW, Ecological Engineering, NEPA, Cultural, Natural, site characterization and assessments, geologic and hydrogeologic studies, remediation, MEP engineering, permitting, wetlands, NEPA, cultural resources, smart infrastructure, FCA, Energy and Water Planning Studies

04TETATZIN ENTERPRISES LLC

Engineering & Architecture · Tacoma, Washington
SBA-certified WOSB, SDVOSB, VOSB
WOSBSDVOSBVOSB

Engineering and management consulting services. Comprehensive solutions, program delivery and support for responsible growth in urban and rural towns, cities, counties, and military installations in the Puget Sound region. Develop capital improvement and maintenance programs, comprehensive land use and transportation plans, and process improvements for permitting, customer service, and general government administration. Development regulations, comprehensive plan analysis and drafting services, policy and procedure review and development services. Utilities financial and technical analysis including rate development, capital project planning, revenue forecasting, organizational design, and permit compliance reviews. Engineering support for mission assurance, resilience, capital project planning, operations and maintenance, and asset management.

05GUARDIANX LLC

Professional & Management Consulting · Seattle, Washington
SBA-certified WOSB
WOSB

GuardianX LLC is a woman-owned small business based in Seattle, WA, specializing in advanced safety technologies, AI-driven research, and educational innovation. Our company designs and supplies intelligent protective systems, quantum-photonic materials, and customized safety equipment for schools, laboratories, and transportation sectors. GuardianX also provides R&D and training solutions integrating AI, clean energy, and digital security to support government and private sector innovation.

11PACIFIC RIM ENVIRONMENTAL, INC.

Environmental & Waste Services · Seattle, Washington
SBA-certified WOSB
WOSB

PacRim specializes in hazardous material consulting and project management in the greater Seattle area. The firm is locally owned and brings a wealth of experience to its services. The team at PacRim includes skilled professionals such as AHERA Accredited Inspectors, Project Designers, and Management Planners. These experts are well-versed in handling hazardous materials and managing related projects. PacRim's capabilities are further strengthened by its in-house NVLAP-accredited asbestos laboratory. This laboratory supports the firm's operations, ensuring accurate and reliable analysis of asbestos-related materials. The combination of certifications, experienced professionals, and an accredited laboratory underscores PacRim's commitment to excellence in hazardous material consulting and project management within Washington State.

14OKEAN SOLUTIONS INC

Engineering & Architecture · Seattle, Washington
SBA-certified WOSB
WOSB

Operating since 2010 to provide: Aerospace Systems Engineering Consulting, Software Integration and Test, IT Development & IT Support, Business Apps. Our product line centers around a unique fault detection and isolation software, MONSID. The model-based software is designed to work in applications requiring in-depth understanding of how the system actually operates. MONSID-based solutions can be used for system characterization during development, test support during hardware Integration and Test, and for real-time system health assessment during operations, in situ or remote. MONSID solutions come with extensive Documentation, development and analysis tools, and user guides to support your engineering teams from day one. We offer flexible software licensing and training. We have integrated MONSID in many open-source and custom frameworks for stand-alone and embedded implementations, and our engineers provide the full spectrum of support from installation to maintenance.

15FTECH LLC

Engineering & Architecture · Tacoma, Washington
SBA-certified WOSB, EDWOSB
WOSBEDWOSB

F-TECH is a new, certified women-owned, engineering firm, with a core focus on fulfilling high-value machining and technical contracts for prime contractors. Bringing together decades of experience in aerospace, embedded circuits, and industrial design, we are a powerhouse of knowledge, skill, and innovation. Capabilities: NIST-800 compliant | Additive manufacturing | Metals machining (stainless steel, carbon steel, aluminum) | 3D Printing (PFA, ABS, Nylon, resin, more) | CNC | Silicone molding, resin casting | Established local suppliers and supply chain | Custom PCB print runs | In-house Industrial Design | SW, FW | GIS | IoT | BLE | CAD, Autodesk, Microsoft Suite, Project, Jira

16DODDA CORPORATION

IT & Software Services · Bellevue, Washington
SBA-certified WOSB
WOSB

dodda.ai is a SaaS product for AEC industry to streamline the permit process by automatically flagging potential code compliance issues in building drawings, saving your valuable time by at least 50%. We combine our decades of experience in technology, architecture & construction in creating SCALABLE, DURABLE & SECURED products to reduce uncertainties and improve your profit margins.

17HARRIS ENVIRONMENTAL GROUP, INC.

Environmental & Waste Services · Fircrest, Washington
SBA-certified WOSB, HUBZone
WOSBHUBZone

Environmental clearance and permitting for natural and cultural resource management, National Environmental Policy Act and hazardous waste investigations/removal. Natural resource experience includes: endangered species studies and monitoring; vegetation and riparian restoration studies; bat roost investigations; endangered species recovery plans; noxious/invasive weed surveys; attitude surveys of endangered species; restoration plans; preparing NEPA documents and Integrated Natural Resource Management Plans. Cultural resource experience includes conducting small to large-scale cultural resources surveys, including: excavations, construction monitoring, and compliance, historic architecture documentation, ethnographic studies, and Integrated Cultural Resource Management Plans. Hazardous waste investigations include Phase I Environmental Site Assessments, asbestos and radon surveys, underground storage tank and lead studies/removal

18JW3 BIOTECHNOLOGIES LLC

Research & Scientific Services · Bothell, Washington
SBA-certified WOSB
WOSB

• Provide strategic, operational, procurement, quality, regulatory, and CMC, talent development and leadership mentoring in the fields of Biotechnology, Pharmaceutical R&D, Analytical Testing & Clinical Trials from early-, mid-, and late-stage of clinical development through to commercial licensure of biologics, and drugs including monoclonal antibodies, fusion antibody proteins, recombinant human coagulation factors, cytokines, growth factors, therapeutics, vaccines, cell and gene therapy products. • Subject Matter Expertise in arenas of biologics, vaccines, cell and gene therapy: process development, scale up, global technology transfers, facility DQ, IQ, OQ, PQ, validation & start up, commercialization, drug launches, and large-scale CGMP manufacturing from clinical through to commercial manufacturing & distribution, quality & compliance, analytical testing strategy, regulatory submissions and inspections with world-wide health authorities and regulatory agencies.

21ELYON INTERNATIONAL, INC.

IT & Software Services · Vancouver, Washington
SBA-certified WOSB, VOSB
WOSBVOSB

ELYON provides mission-focused digital modernization and mission support services that help organizations improve operational performance, strengthen decision-making, and maximize return on technology investments. Our capabilities span cloud, cyber, data, AI/ML, geographic information systems (GIS), and system integration, combined with strong process improvement and knowledge management expertise to enable secure, interoperable, and mission-ready environments. We are integrating and advancing systems to accelerate technology adoption for improved mission outcomes. In order to keep operational efficiency and security, we implement change management practices, access governance and control through role-based access (RBAC), to ensure long-term mission success. To accelerate actionable insights, we provide business intelligence and workflow automation within business infrastructures. We have supported NOAA, BLM, NPS, IRS, DOE-BPA, EPA, USAF-AMC, USDA-NRCS, USDA-FS, USACE, VA.

22INFINITY FABRICATION, INC.

Manufacturing & Production · Marysville, Washington
SBA-certified WOSB
WOSB

Supplier of structural airplane parts and precision components for the aerospace and defense industries. Products are machined, formed and fabricated from aluminum, titanium, steel and other alloys for commercial and military aircraft. We offer wide range of capabilities, including hydro-form, brake-form, coin various sheet metal shapes. Our CNC mills are capable of machining parts up to 144' in length. The PMG team prides our-selves in supporting the ‘quick turn’ demands of our customers – whether re-sourcing product from other suppliers or on newly engineered aircraft programs.

23POLESTAR TECHNICAL SERVICES INC

Environmental & Waste Services · Richland, Washington
SBA-certified WOSB
WOSB

Polestar Technical Services, Inc., specializes in risk reduction and liability solutions with a focus on clean up of high-hazard work environments to safely accelerate progress and reduce long-term costs.

24PLATEAU GEOSCIENCE GROUP LLC

Environmental & Waste Services · Battle Ground, Washington
SBA-certified WOSB, EDWOSB
WOSBEDWOSB

Geophysical surveys, ground penetrating radar, environmental investigation and remediation, landfill closure and monitoring, site investigation for property development or engineering projects, stormwater engineering and management, stormwater treatment design and installation, stormwater compliance, environmental permitting and compliance, environmental media sampling, database development and management, project management, small business certified subcontractor.

26RC CONSTRUCTION SERVICES INC

Professional & Management Consulting · Richland, Washington
SBA-certified WOSB
WOSB

RCECM is a WOSB. We provide engineering,construction management, project management, environmental remediation, demolition support, construction inspection, cost engineering, project controls, and related services for environmental, heavy civil, and military works. We also specialize in technical and professional staff augmentation support across multiple disciplines.

27INDEPENDENT STRATEGIC MANAGEMENT SOLUTIONS INC

Environmental & Waste Services · Richland, Washington
SBA-certified WOSB, EDWOSB
WOSBEDWOSB

Provides management/technical consulting services to gov't/contractors in environmental clean-up, national security, Dept. of Navy & energy sectors. Focus in environment, safety & health, quality, nuclear safety, engineering, operations, security and command & control.

29MAKERS ARCHITECTURE AND URBAN DESIGN LLP

Engineering & Architecture · Seattle, Washington
SBA-certified WOSB
WOSB

MAKERS is an award-winning architectural and urban design firm providing services to clients throughout the Pacific Northwest and the United States. Founded in 1972, the firm provides a client-oriented business approach stressing attention to project requirements, design quality, and budget. Our specialties include urban design, community planning, and facility planning. MAKERS is a certified Women’s Business Enterprise (WBE) and Disadvantaged Business Enterprise (DBE). Our plans achieve results because we seek to balance the complex issues that come with every project. We offer professional services to clients of all sizes. From local community design guidelines to large-scale master plans for U.S. Navy bases, our plans and projects all include an implementation strategy tailored to the unique needs of our projects and clients.

Frequently asked

Are there certified women-owned NAICS 541330 vendors in Washington?

Yes — 29 certified women-owned vendors in Washington list NAICS 541330 (Engineering Services), each with an active WOSB or EDWOSB certification reported from the U.S. SBA Small Business Search and dated on each listing.