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Best 15 SEO Web Development Companies in the USA (2026)

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    Objetivos que hemos alcanzado:
    Aumento de los clientes adquiridos anualmente por la empresa estadounidense de desarrollo de software en 400%. *
    Generó más de 50 oportunidades de negocio para un proveedor de servicios de arquitectura y diseño del Reino Unido. *
    Reducción del coste por cliente potencial en más de 6 veces para una empresa holandesa de tecnología para eventos. *
    Se contactó con 13 000 clientes potenciales y se generaron 400 oportunidades para Swiss Sports Tech Provider. *
    Aumento de la tasa de conversión de una empresa ucraniana de TI en un 53,61 %. TP3T *
    Aumento de los clientes adquiridos anualmente por la empresa estadounidense de desarrollo de software en 400%. *
    Generó más de 50 oportunidades de negocio para un proveedor de servicios de arquitectura y diseño del Reino Unido. *
    Reducción del coste por cliente potencial en más de 6 veces para una empresa holandesa de tecnología para eventos. *
    Se contactó con 13 000 clientes potenciales y se generaron 400 oportunidades para Swiss Sports Tech Provider. *
    Aumento de la tasa de conversión de una empresa ucraniana de TI en un 53,61 %. TP3T *
    Aumento de los clientes adquiridos anualmente por la empresa estadounidense de desarrollo de software en 400%. *
    Generó más de 50 oportunidades de negocio para un proveedor de servicios de arquitectura y diseño del Reino Unido. *
    Reducción del coste por cliente potencial en más de 6 veces para una empresa holandesa de tecnología para eventos. *
    Se contactó con 13 000 clientes potenciales y se generaron 400 oportunidades para Swiss Sports Tech Provider. *
    Aumento de la tasa de conversión de una empresa ucraniana de TI en un 53,61 %. TP3T *
    Aumento de los clientes adquiridos anualmente por la empresa estadounidense de desarrollo de software en 400%. *
    Generó más de 50 oportunidades de negocio para un proveedor de servicios de arquitectura y diseño del Reino Unido. *
    Reducción del coste por cliente potencial en más de 6 veces para una empresa holandesa de tecnología para eventos. *
    Se contactó con 13 000 clientes potenciales y se generaron 400 oportunidades para Swiss Sports Tech Provider. *
    Aumento de la tasa de conversión de una empresa ucraniana de TI en un 53,61 %. TP3T *
    Aumento de los clientes adquiridos anualmente por la empresa estadounidense de desarrollo de software en 400%. *
    Generó más de 50 oportunidades de negocio para un proveedor de servicios de arquitectura y diseño del Reino Unido. *
    Reducción del coste por cliente potencial en más de 6 veces para una empresa holandesa de tecnología para eventos. *
    Se contactó con 13 000 clientes potenciales y se generaron 400 oportunidades para Swiss Sports Tech Provider. *
    Aumento de la tasa de conversión de una empresa ucraniana de TI en un 53,61 %. TP3T *
    Aumento de los clientes adquiridos anualmente por la empresa estadounidense de desarrollo de software en 400%. *
    Generó más de 50 oportunidades de negocio para un proveedor de servicios de arquitectura y diseño del Reino Unido. *
    Reducción del coste por cliente potencial en más de 6 veces para una empresa holandesa de tecnología para eventos. *
    Se contactó con 13 000 clientes potenciales y se generaron 400 oportunidades para Swiss Sports Tech Provider. *
    Aumento de la tasa de conversión de una empresa ucraniana de TI en un 53,61 %. TP3T *
    Resumen de IA
    Sergii Steshenko
    CEO & Co-Founder @ Lengreo

      SEO web development brings search requirements into the website build rather than treating optimization as a separate task after launch. Technical architecture, page speed, mobile usability, crawlability, structured content, redirects, and analytics can all affect how effectively a site performs in organic search. For businesses rebuilding an existing website, migration planning is especially important because development decisions can preserve or damage established visibility. The right provider depends on whether the project needs a marketing website, ecommerce store, B2B lead-generation platform, or more complex custom web application.

       

       

      1. LenGreo

      1. LenGreo

      Lengreo combines SEO with website and custom web development, making the company relevant to businesses that want development and organic acquisition managed within the same broader strategy. Its development work includes business and ecommerce websites, landing pages, web applications, APIs, and UX/UI, while its marketing capabilities cover SEO, AI search optimization, content, paid advertising, and demand generation. The company has also published work involving US software and ecommerce businesses. 

       

      Key Facts:

      • Lo mejor para: B2B companies connecting web development with organic lead generation
      • Servicios principales: SEO, AI search optimization, website development, custom web development, UX/UI
      • Project types: Business websites, ecommerce sites, landing pages, web applications, APIs
      • Industries: B2B, SaaS, software, technology, fintech, cybersecurity
      • Notable strength: Development and search strategy within one service portfolio

       

      Información de contacto

      • logotipo del embrague
      • logotipo de Trustpilot
      Nuestros casos
      Plataforma de suscripción para creadores
      Plataforma de suscripción para creadores
      Plataforma de directorio B2B
      Plataforma de directorio B2B
      PLATAFORMA LOGÍSTICA A MEDIDA
      PLATAFORMA LOGÍSTICA A MEDIDA
      2. WebFX

      2. WebFX

      WebFX has a dedicated SEO web design offering that connects website design and development with search optimization and conversion work. Its projects can incorporate responsive design, web development, content, SEO, CRO, analytics, and ongoing optimization. The company also publishes case studies where web development and SEO have been used together, making its service model particularly relevant to established organizations rebuilding sites around both visibility and conversion objectives. 

       

      Key Facts:

      • Lo mejor para: Established businesses combining SEO, development, and conversion optimization
      • Servicios principales: SEO, web design, web development, CRO, content marketing
      • SEO focus: Technical, on-page, off-page, and AI-oriented search optimization
      • Notable strength: SEO integrated directly into website design and development

       

      Información de contacto:

      • Sitio web: www.webfx.com
      • Instagram: www.instagram.com/webfx
      • LinkedIn: www.linkedin.com/company/webfxinc
      • Twitter: x.com/webfx
      • Facebook: www.facebook.com/webfxinc
      • Dirección: 1705 North Front Street Harrisburg, PA, USA
      • Phone: 1 888 449 3239

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        3. Itexus

        3. Itexus

        Itexus provides website development with a defined SEO stage before release. Its process covers planning, UX/UI, frontend and backend development, SEO, testing, performance optimization, deployment, and support. SEO work includes internal optimization, meta tags, robots.txt, XML sitemaps, rich-snippet preparation, and analytics setup. The company is especially relevant when search-friendly website development needs to sit alongside custom software or more technically complex web engineering. 

         

        Key Facts:

        • Lo mejor para: Technically complex websites and web platforms requiring SEO foundations
        • Servicios principales: Website development, custom software, UX/UI, QA, DevOps
        • SEO capabilities: Internal optimization, metadata, sitemaps, robots.txt, structured snippets, analytics
        • USA presence: Dover, Delaware
        • Notable strength: SEO included as a specific stage of the development workflow

         

        Información de contacto:

        • Sitio web: itexus.com
        • Correo electrónico: [email protected]
        • Instagram: www.instagram.com/itexus.soft
        • LinkedIn: www.linkedin.com/company/itexus
        • Twitter: x.com/ItexusSoft
        • Facebook: www.facebook.com/itexus
        • Address: 8, The Green, STE road, Dover, DE 19901, US
        4. Coalition Technologies

        4. Coalition Technologies

        Coalition Technologies combines SEO with web design and development, including ecommerce projects. Its published work shows SEO, design, and development being applied together to address site structure, mobile usability, performance, content, organic visibility, and conversions. This makes the company relevant to businesses where a website rebuild is directly connected to search performance rather than treated as a separate branding exercise. 

         

        Key Facts:

        • Lo mejor para: Ecommerce and lead-generation websites
        • Servicios principales: SEO, web design, web development, PPC, email marketing
        • Project types: Ecommerce stores, WordPress sites, custom websites
        • Ubicación: Los Angeles, California
        • Notable strength: Close integration between SEO and development

         

        Información de contacto:

        • Sitio web: coalitiontechnologies.com
        • Correo electrónico: [email protected]
        • Instagram: www.instagram.com/coalitiontech
        • LinkedIn: www.linkedin.com/company/coalition-technologies
        • Twitter: x.com/coalitiontech
        • Facebook: www.facebook.com/CoalitionTech
        • Address: 515 S Flower St., 18th Floor, Suite #4081, Los Angeles, CA 90071, United States
        • Phone: (310) 827-3890
        5. SmartSites

        5. SmartSites

        SmartSites combines website design and development with SEO, PPC, email and SMS marketing, and social media services. Its service mix suits businesses that expect organic search and paid acquisition to continue after a new website launches. The agency works across B2B, ecommerce, healthcare, automotive, home services, and retail projects and is headquartered in New Jersey. 

         

        Key Facts:

        • Lo mejor para: Businesses combining a new website with ongoing SEO
        • Servicios principales: Web design, web development, SEO, PPC, email marketing
        • Industries: Ecommerce, B2B, healthcare, automotive, retail, home services
        • Ubicación: Paramus, New Jersey
        • Notable strength: Website and digital acquisition services under one agency

         

        Información de contacto:

        • Sitio web: www.smartsites.com
        • Correo electrónico: [email protected]
        • Instagram: www.instagram.com/smartsitesnj
        • LinkedIn: www.linkedin.com/company/smartsites
        • Twitter: x.com/SmartSitesNJ
        • Facebook: www.facebook.com/SmartSites 
        • Dirección: 45 Eisenhower Drive, Suite 520, Paramus, Nueva Jersey 07652
        • Teléfono: 201-870-6000
        6. Agencia de marketing digital Thrive

        6. Thrive Internet Marketing Agency

        Thrive provides web design and development alongside SEO, content, PPC, CRO, email marketing, and ecommerce marketing. Its structure is suited to businesses that need an initial website project followed by ongoing search and conversion work. The agency serves companies across the United States and works with both B2B and ecommerce website projects.

         

        Key Facts:

        • Lo mejor para: Ongoing SEO after website launch
        • Servicios principales: Web development, web design, SEO, PPC, CRO, content
        • Project focus: Business and ecommerce websites
        • USA coverage: Nationwide
        • Notable strength: Development connected with continuing digital marketing

        Información de contacto:

        • Sitio web: thriveagency.com
        • Instagram: www.instagram.com/thriveinternetmarketingagency
        • LinkedIn: www.linkedin.com/company/thrive-agency
        • Twitter: x.com/ThriveAgency
        • Facebook: www.facebook.com/ThriveAgency 
        • Dirección: 4604 Park Springs Blvd, Suite 140, Arlington, TX 76017 
        • Teléfono: 866-908-4748
        7. Hacia el norte, en línea recta

        7. Straight North

        Straight North combines website design and development with SEO and paid advertising. Its website methodology addresses content, UX, development, search-friendly structure, and conversion paths, which is useful when a redesign is intended to improve both lead generation and organic visibility. The company serves US businesses from its Illinois base.

         

        Key Facts:

        • Lo mejor para: Lead-generation websites
        • Servicios principales: Web design, web development, SEO, paid advertising
        • Especialización: Search-friendly business websites
        • Ubicación: Illinois, USA
        • Notable strength: SEO and conversion considerations within website projects

         

        Información de contacto:

        • Sitio web: www.straightnorth.com
        • Instagram: www.instagram.com/straightnorth
        • LinkedIn: www.linkedin.com/company/straight-north
        • Twitter: x.com/StraightNorth
        • Facebook: www.facebook.com/StraightNorth/
        • Dirección: 1001 W. 31st Street, Suite 100, Downers Grove, IL 60515
        • Teléfono: 855-883-0011
        8. Caja exterior

        8. OuterBox

        OuterBox connects web development with SEO, CRO, analytics, PPC, email, and content marketing. Its website projects can include UX, frontend and backend development, CMS implementation, integrations, technical SEO, analytics, QA, and post-launch support. Ecommerce is a major area of experience, although the company also works with B2B, enterprise, and service businesses. 

         

        Key Facts:

        • Lo mejor para: Ecommerce and technically involved SEO website projects
        • Servicios principales: Web development, SEO, CRO, PPC, analytics
        • Development capabilities: Frontend, backend, CMS, integrations
        • Ubicación: Akron, Ohio
        • Notable strength: Technical SEO incorporated into development projects

         

        Información de contacto:

        • Sitio web: www.outerboxdesign.com
        • Instagram: www.instagram.com/outerbox
        • LinkedIn: www.linkedin.com/company/outerbox
        • Twitter: x.com/outerbox
        • Facebook: www.facebook.com/OuterBox
        • Address: 175 Montrose West Ave., Ste 200, Akron, OH 44321
        • Teléfono: 1-866-647-9218
        9. Lagarto de salón

        9. Lounge Lizard

        Lounge Lizard works across web design, development, branding, and digital marketing. Its technical capabilities include custom development and work with WordPress, Shopify, Magento, Laravel, and Contentful, while its marketing services include SEO, PPC, social media, email, CRO, and marketing automation. This combination fits businesses that want brand, website, and search work coordinated through one agency. 

         

        Key Facts:

        • Lo mejor para: Brand-focused websites requiring SEO and development
        • Servicios principales: Web development, web design, SEO, branding, PPC
        • Platforms: WordPress, Shopify, Magento, Contentful
        • Ubicación: New York, USA
        • Notable strength: Development combined with branding and digital marketing

         

        Información de contacto:

        • Sitio web: www.loungelizard.com
        • Correo electrónico: [email protected]
        • Instagram: www.instagram.com/loungelizardww
        • LinkedIn: www.linkedin.com/company/lounge-lizard-worldwide-inc.
        • Twitter: x.com/LoungeLizardWW
        • Facebook: www.facebook.com/pages/Lounge-Lizard-Worldwide-Inc
        • Dirección: 112 West 34th Street, piso 18, Nueva York, NY 10120
        • Teléfono: 1-888-444-0110
        10. Seda digital

        10. Digital Silk

        Digital Silk handles web development within a wider offering that includes web design, branding, SEO, PPC, content, social media, and digital strategy. Its website projects can cover custom development, ecommerce, responsive design, CMS integration, UX, testing, and post-launch optimization. This range is relevant to organizations undertaking substantial redesigns where search, branding, accessibility, and conversion requirements need to be addressed together.

         

        Key Facts:

        • Lo mejor para: Custom website redesigns tied to marketing goals
        • Servicios principales: Web development, web design, SEO, branding, digital marketing
        • Project types: Corporate, B2B, B2C and ecommerce websites
        • Notable strength: Strategy, UX, development, and marketing in one workflow

         

        Información de contacto:

        • Sitio web: www.digitalsilk.com
        • Instagram: www.instagram.com/digitalsilkagency
        • LinkedIn: www.linkedin.com/company/digitalsilk
        • Address: New York, 18 West 18th Street, New York, NY 10011
        • Teléfono: (800) 206-9413
        11. Diseño Bop

        11. Bop Design

        Bop Design focuses specifically on B2B organizations. Its website design and development work is supported by SEO, branding, content marketing, paid search, email, and ongoing website improvements. Published experience spans technology, SaaS, fintech, biotech, manufacturing, and professional services, making the agency particularly relevant to B2B companies whose websites need to support long sales cycles and organic lead generation. 

         

        Key Facts:

        • Lo mejor para: B2B website redesign and SEO
        • Servicios principales: Web development, web design, SEO, content marketing, branding
        • Industries: SaaS, technology, fintech, biotech, manufacturing
        • Ubicación: San Diego, California
        • Especialización: B2B marketing websites

         

        Información de contacto:

        • Página web: www.bopdesign.com
        • Instagram: www.instagram.com/bopdesign
        • LinkedIn: www.linkedin.com/company/bop-design
        • Twitter: x.com/bopdesignsd
        • Facebook: www.facebook.com/BopDesign
        • Address: 25 Broadway, 10th Floor, New York, NY 10004
        • Phone: 888 670 7803
        12. UPQODE

        12. UPQODE

        UPQODE works across web design, development, SEO, and digital marketing. Its development services cover business and ecommerce websites, including projects involving CRM integration, while the marketing side includes SEO, advertising, landing-page optimization, social media, and CRO. The Nashville-based agency is a practical fit for small and midsized businesses that want search visibility considered alongside website creation and ongoing optimization. 

         

        Key Facts:

        • Lo mejor para: Website projects with an ongoing SEO component
        • Servicios principales: Web development, web design, SEO, digital marketing
        • Project types: Business websites, ecommerce, CRM-connected sites
        • Ubicación: Nashville, Tennessee
        • Notable strength: Website creation combined with search and conversion work

         

        Información de contacto:

        • Sitio web: upqode.com
        • Correo electrónico: [email protected]
        • Instagram: www.instagram.com/upqode 
        • Facebook: www.facebook.com/upqode
        • Address: 41 Peabody St, Nashville, TN 37210 USA
        • Teléfono: +1 615-693-5055
        13. A-Listware

        13. A-Listware

        A-Listware approaches web projects primarily from the software engineering side. Its capabilities cover corporate websites, ecommerce solutions, web portals, web applications, UX/UI, architecture, frontend and backend development, integrations, QA, and ongoing support. 

         

        Key Facts:

        • Lo mejor para: SEO-led projects requiring substantial engineering resources
        • Servicios principales: Web development, UX/UI, software development, QA, integrations
        • Project types: Websites, ecommerce, portals, web applications
        • USA location: North Bergen, New Jersey
        • Notable strength: Full-cycle web engineering and ongoing technical support

         

        Información de contacto:

        • Página web: a-listware.com
        • Correo electrónico: [email protected]
        • LinkedIn: www.linkedin.com/company/a-listware
        • Facebook: www.facebook.com/alistware
        • Dirección: North Bergen, NJ 07047, EE. UU.
        • Teléfono: +1 (888) 337 93 73
        14. 21Century.tech

        14. 21Century.tech

        21Century.tech is an AI-native software studio. Its development model combines senior engineering oversight with AI-assisted coding, testing, documentation, and refactoring. Published capabilities include landing pages, full-stack features, MVPs, integrations, CI/CD, and deployment. For an SEO-driven website project, the studio is therefore better suited to implementing defined technical and development requirements than managing a complete organic search campaign itself.

         

        Key Facts:

        • Lo mejor para: Development-heavy projects with externally defined SEO requirements
        • Servicios principales: Full-stack development, MVP development, integrations, refactoring
        • Development capabilities: Architecture, frontend and backend work, testing, CI/CD
        • Delivery model: Senior engineers supported by AI-assisted development
        • Notable strength: Rapid production software development with human code review

         

        Información de contacto:

        • Página web: 21century.tech
        15. Papel de hierro

        15. Ironpaper

        Ironpaper combines B2B website strategy and development with SEO, demand generation, content, account-based marketing, and sales enablement. Its development capabilities include marketing websites, web applications, SaaS products, WordPress, and HubSpot CMS projects. The B2B emphasis makes the company relevant when organic search is expected to support qualified lead generation and longer buyer journeys rather than simply increasing general website traffic.

         

        Key Facts:

        • Lo mejor para: B2B companies with complex buying cycles
        • Servicios principales: Web development, SEO, demand generation, content marketing
        • Development capabilities: Marketing websites, web applications, SaaS, WordPress, HubSpot CMS
        • Ubicación: New York, USA
        • Notable strength: Connecting website and SEO work with B2B demand generation

         

        Información de contacto:

        • Sitio web: www.ironpaper.com
        • LinkedIn: www.linkedin.com/company/ironpaper
        • Address: 10 East 33rd Street, 6th Floor, New York, NY 10016
        • Teléfono: 212-993-7809

        SEO web development increasingly requires coordination between engineering, content, UX, analytics, and search specialists. A visually polished website can still underperform if its architecture makes important pages difficult to crawl, its templates create performance problems, or a migration removes established URLs without appropriate redirects. At the same time, technical optimization alone cannot compensate for weak content or unclear conversion paths. Businesses evaluating providers should therefore consider how SEO requirements enter the development process, who is responsible for implementation, and what happens after launch. The strongest working model is usually one in which search requirements are defined before development decisions become expensive to reverse.

        Resumen de IA