Best California eCommerce SEO Agencies

310 Companies-Rankings updated: August 31, 2026

All agencies on DesignRush undergo evaluation based on professional expertise and verified client reviews. Please note that certain placements are paid partnerships.

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  • SynergyTop

    SynergyTop is a custom software development company

    SynergyTop is a custom software development company

    SynergyTop is a healthcare-focused custom software development company offering healthcare platforms, EHR and FHIR integrations, patient portals, telehealth solutions, AI automation, web development, mobile apps and product engineering services...

    Top Services:

    • Web Design
    • eCommerce Development
    • UI/UX Design
    • Web Development
    • Mobile App Development
    • Show more
    Location
    San Diego, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    7 Projects Listed
    View Profile
    4.9 4.9 (10)
    5.0 5.0 (6)

  • MJSEO.Agency

    Boost Your Cannabis Business with Proven MjSeo Agency!

    Boost Your Cannabis Business with Proven MjSeo Agency!

    If you have a business in the cannabis niche, and you plan to increase profits through the Internet, then you should think about SEO promotion. MjSeo Agency will help you to be at the first place in Google and to receive more clients with organic search of your products. Don't delay, increase your profit with...

    Top Services:

    • SEO
    • Digital Marketing
    • Web Design
    • Content Marketing
    • Web Development
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile
    4.9 4.9 (10)

  • Intero Digital

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    #1 Rated Digital Marketing Agency in the US

    #1 Rated Digital Marketing Agency in the US

    Intero Digital deploys its proprietary InteroBOT crawler and GRO framework to deliver ROI-driven eCommerce SEO spanning technical audits, product optimization, structured data, and AI search visibility. Led by 400+ specialists, it is trusted by brands like Mizuno and Blackbaud...

    Top Services:

    • Digital Marketing
    • SEO
    • PPC
    • Content Marketing
    • Social Media Marketing
    • Show more
    Location
    San Diego, California
    Number of Employees
    250 - 499
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    18 Projects Listed
    View Profile
    4.9 4.9 (9)
    4.8 4.8 (257)

  • The Ad Firm

    Professional Digital Marketing Solutions

    Professional Digital Marketing Solutions

    Services we offer include: SEO (Search Engine Optimization), PPC (Pay Per Click) Management, Website Development & Design, Content and Mobile Marketing Strategy, Email Marketing, Sales Optimization ( Conversion Rate Optimization, Affiliate Marketing, Online Presence Analysis), and much more!...

    Top Services:

    • SEO
    • Digital Marketing
    • WordPress Website Design
    • PPC
    • CRO
    • Show more
    Location
    Carlsbad, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
    View Profile
    4.9 4.9 (9)
    5.0 5.0 (25)

  • Burst Digital

    We are a creative agency based in London, New York & San Francisco.

    We are a creative agency based in London, New York & San Francisco.

    More leads. Higher conversions. Faster growth...

    Top Services:

    • Branding
    • Web Design
    • Digital Marketing
    • Social Media Marketing
    • Web Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $95/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    12 Projects Listed
    View Profile
    4.9 4.9 (9)
    5.0 5.0 (76)

  • Tusk Creative Studios

    Helping Orange County Businesses Scale the Right Way.

    Helping Orange County Businesses Scale the Right Way.

    Tusk Creative Studios is a digital firm based in Newport Beach, California that focuses on expanding local businesses' internet presence in order to help those businesses realize their full online potential. We provide services in the areas of website building, search engine optimization (SEO), branding...

    Top Services:

    • Web Design
    • SEO
    • PPC
    • Digital Marketing
    • Web Development
    • Show more
    Location
    Newport Beach, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    4 Projects Listed
    View Profile
    4.9 4.9 (9)
    5.0 5.0 (20)

  • Quantum IT Innovation

    Empowering Your Digital Future with Innovative IT Solutions

    Empowering Your Digital Future with Innovative IT Solutions

    At Quantum IT Innovation, our team excels in AI, Big Data, RPA, and Mobile App Development for iOS, Android, and Cross-Platform. We also offer expert SEO, PPC, and Social Media services to drive your business forward in the USA, UK, Canada, Ireland, UAE, Australia, India, & across the globe...

    Top Services:

    • Web Development
    • Social Media Marketing
    • SEO
    • PPC
    • IT Services
    • Show more
    Location
    San Clemente, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    101 Projects Listed
    View Profile
    4.9 4.9 (9)
    4.1 4.1 (112)

  • SmartSites

    VerifiedVerified by the DesignRush team for authenticity and credibility.AI LeaderRecognized for strong visibility across AI-powered search and answer engines.
    Think Web. Think Smart. Partner With the #1 Rated Digital Marketing Agency.

    Think Web. Think Smart. Partner With the #1 Rated Digital Marketing Agency.

    Backed by 15+ years of experience, SmartSites provides expertise in keyword research, URL structure, on-page optimization, link building, and technical audit. A leading eCommerce SEO company, it has launched 900+ websites and helped clients generate $100M+ in sales...

    Top Services:

    • Digital Marketing
    • SEO
    • PPC
    • Social Media Marketing
    • Email Marketing
    • Show more
    Location
    San Diego, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $100/hr
    Portfolios Count
    4 Projects Listed
    View Profile
    5.0 5.0 (270)
    4.9 4.9 (903)

  • Probey Services

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    World's #1 Rated & Reviewed App, Website & Software Development Company

    World's #1 Rated & Reviewed App, Website & Software Development Company

    Probey Services pairs eCommerce SEO with full store management, covering on-page optimization, keyword research, backlink building, inventory systems, and marketplace account management. Backed by 10+ years of experience, it has delivered 1,800+ projects and served 120+ clients...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • Web Design
    • WordPress Website Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    94 Projects Listed
    View Profile
    5.0 5.0 (110)
    5.0 5.0 (1)

  • Funnel Boost Media

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    Design. Rank. Grow | Award Winning Digital Marketing Agency

    Design. Rank. Grow | Award Winning Digital Marketing Agency

    Funnel Boost has been championing growth since 2012 through product page keyword research, on-page optimization, technical SEO, link building, and international SEO. A top-rated eCommerce SEO agency, it has generated 411,000+ leads across campaigns for clients like Audi and Papillon...

    Top Services:

    • SEO
    • Digital Marketing
    • AEO
    • Web Development
    • Web Design
    • Show more
    Location
    San Francisco, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    14 Projects Listed
    View Profile
    5.0 5.0 (89)
    4.9 4.9 (256)

  • Searchbloom

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    Top Rated SEO Agency by Forbes, USA Today, Backlinko, & Search Engine Land

    Top Rated SEO Agency by Forbes, USA Today, Backlinko, & Search Engine Land

    A 5x Search Engine Award Winner, SearchBloom produces revenue-driven, AI-powered eCommerce SEO that prioritizes large-catalog optimization, keyword mapping at scale, and high-quality link acquisition. With its proven A.R.T. framework, it has helped brands like USBank and Nordstrom drive growth...

    Top Services:

    • SEO
    • PPC
    • CRO
    • eCommerce
    • Content Marketing
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    9 Projects Listed
    View Profile
    5.0 5.0 (50)
    5.0 5.0 (86)

  • Elit-Web

    Revenue-Focused Digital Marketing

    Revenue-Focused Digital Marketing

    Founded in 2014, Elit-Web’s expertise spans SEO audits, keyword research, product page and category optimization, internal linking, link building, and competitor analysis. The eCommerce SEO agency has completed 2,500+ projects, generated 3.5M+ leads, and delivered an average 220% ROI for clients...

    Top Services:

    • SEO
    • Digital Marketing
    • PPC
    • eCommerce
    • Social Media Marketing
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    47 Projects Listed
    View Profile
    5.0 5.0 (49)
    5.0 5.0 (18)

  • Magneto IT Solutions

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    Next-Gen Digital Commerce and Growth Marketing Partner

    Next-Gen Digital Commerce and Growth Marketing Partner

    Magento IT accelerates brand growth through its 360º eCommerce SEO approach, covering product page, category, product image optimization, behavior analysis, and UX optimization. Backed by 15+ years of experience, it has launched 400+ stores, won 15+ awards, and generated $15B+ in client revenue...

    Top Services:

    • Digital Marketing
    • Social Media Marketing
    • SEO
    • eCommerce Development
    • eCommerce
    • Show more
    Location
    San Francisco, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    47 Projects Listed
    View Profile
    5.0 5.0 (35)
    5.0 5.0 (15)

  • LinkGraph

    Grow your Revenue through Transparent & Results-Driven SEO

    Grow your Revenue through Transparent & Results-Driven SEO

    LinkGraph maximizes brand growth through technical audits, product and category page optimization, keyword and topic mapping, content creation, link building, AEO, and GEO, powered by proprietary AI agents that automate implementation at scale. A Drum Awards winner, it is trusted by TinyURL and P&G...

    Top Services:

    • SEO
    • Digital Marketing
    • Public Relations
    • Digital Strategy
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    50 - 99
    Portfolios Count
    6 Projects Listed
    View Profile
    5.0 5.0 (32)
    4.6 4.6 (21)

  • Jives Media

    The SEO & Digital Ad Experts

    The SEO & Digital Ad Experts

    Jives Media boosts eCommerce brand visibility across Google and AI search engines through technical audits, AI-powered content optimization, keyword intent mapping, authority link building, AEO, and GEO. Since 2012, it has completed 5,000+ projects and generated $1B+ in client revenue...

    Top Services:

    • SEO
    • Web Design
    • Digital Marketing
    • Web Development
    • PPC
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Portfolios Count
    5 Projects Listed
    View Profile
    5.0 5.0 (30)
    5.0 5.0 (164)

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