Top JavaScript Companies in California (United States)

California is a hub for JavaScript, known for its talented developers, innovative technology, and thriving ecosystem. It is a go-to destination for anyone looking to be a part of the cutting-edge world of JavaScript development. Discover the Top 15 JavaScript Companies in California.

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  • Human
  • Urban Insight
  • Vardot
  • Yellow
  • SF AppWorks
  • Storm Brain
  • Refact
  • minor change
  • Visceral
  • Amasta Media

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List of the Best JavaScript Companies in California

15 Companies Ranking last updated on: February 17, 2025

  • Human

    Human

    Results and human-first digital marketing agency

    JavaScriptPHPSQLTypeScript
    Human is a full-service digital marketing agency that is passionate about people and results. We partner with a small number of mid-sized businesses as their fully outsourced CMO and digital execution team to drive meaningful business growth, value and ROI. Our digital marketing...
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    • 21-50 Members
    • Irvine, CA
    • $150 - $199/hr for JavaScript
    • $5,000 to $10,000 for JavaScript

    • 40% JavaScript

  • Urban Insight

    Urban Insight

    Web Strategy, Design & Development

    JavaScriptPHP
    Urban Insight champions your mission-focused organization by creating custom, user-friendly, fast, and flexible websites and applications that supercharge your growth. Established in 1997, we’ve successfully completed and launched over 500 projects for a wide range of clients,...
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    • 21-50 Members
    • Los Angeles, CA
    • $150 - $199/hr for JavaScript
    • $50,000 to $75,000 for JavaScript

    • 30% JavaScript

  • Vardot

    Vardot

    Enterprise Drupal Solutions

    JavaScriptPHPHTML5
    Vardot is a global web development and design solutions company that leverages open-source technology to help businesses achieve digital transformation. With a comprehensive approach to project management, we guide our clients through every stage of the project lifecycle. About ...
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    • 51-100 Members
    • Santa Clara, CA
    • $100 - $149/hr for JavaScript
    • $25,000 to $50,000 for JavaScript

    • 20% JavaScript

  • Yellow

    Yellow

    Where your ideas turn into code and interfaces

    JavaScriptPHPSwiftUnRealScript
    We know how to create business value, not just another piece of software. Yellow has already helped 220+ businesses succeed on the market. For the last 9 years we have been recognized as Clutch’s Top 1000 Global Service Provider, a Top Mobile App Developer, and a Top B2B Compa...
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    • 51-100 Members
    • San Francisco, CA
    • $50 - $99/hr for JavaScript

    • 70% JavaScript

  • SF AppWorks

    SF AppWorks

    JavaScriptPHPSQLPython
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    • 51-100 Members
    • San Francisco, CA
    • $50 - $99/hr for JavaScript
    • $10,000 to $25,000 for JavaScript

    • 40% JavaScript

  • Storm Brain

    Storm Brain

    JavaScriptPHP
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    • 21-50 Members
    • Carlsbad, CA
    • $150 - $199/hr for JavaScript
    • $5,000 to $10,000 for JavaScript

    • 40% JavaScript

  • Refact

    Refact

    JavaScriptPHPOther Frameworks and CMS
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    • 21-50 Members
    • Los Angeles, CA
    • $150 - $199/hr for JavaScript
    • $50,000 to $75,000 for JavaScript

    • 30% JavaScript

  • minor change

    minor change

    JavaScriptPHPHTML5Jquery
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    • 2-10 Members
    • Vacaville, CA
    • $150 - $199/hr for JavaScript
    • $5,000 to $10,000 for JavaScript

    • 30% JavaScript

  • Visceral

    Visceral

    JavaScriptPHPHTML5SQL
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    • 2-10 Members
    • San Diego, CA
    • $200 - $300/hr for JavaScript
    • $50,000 to $75,000 for JavaScript

    • 25% JavaScript

  • Amasta Media

    Amasta Media

    JavaScriptPHPSQLAjax
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    • 2-10 Members
    • Dublin, CA
    • $50 - $99/hr for JavaScript
    • $5,000 to $10,000 for JavaScript

    • 20% JavaScript

  • Nearsure

    Nearsure

    JavaScriptPHPOther Frameworks and CMSPython
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    • 201-500 Members
    • Los Angeles, CA
    • $25 - $49/hr for JavaScript
    • $25,000 to $50,000 for JavaScript

    • 10% JavaScript

  • Tiny Frog Technologies

    Tiny Frog Technologies

    JavaScriptOther Frameworks and CMSPHPSQL
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    • 21-50 Members
    • San Diego, CA
    • $150 - $199/hr for JavaScript
    • $10,000 to $25,000 for JavaScript

    • 10% JavaScript

  • Site Nine Studios

    Site Nine Studios

    JavaScriptPHPSQLAjax
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    • 2-10 Members
    • Newport Beach, CA
    • $50 - $99/hr for JavaScript
    • $5,000 to $10,000 for JavaScript

    • 10% JavaScript

  • WISE Digital Partners

    WISE Digital Partners

    JavaScriptOther Frameworks and CMSPHPPython
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    • 21-50 Members
    • San Diego, CA
    • $150 - $199/hr for JavaScript
    • $10,000 to $25,000 for JavaScript

    • 10% JavaScript

  • Weberous

    Weberous

    JavaScriptPHPSQLAjax
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    • 2-10 Members
    • Los Angeles, CA
    • $100 - $149/hr for JavaScript
    • $25,000 to $50,000 for JavaScript

    • 10% JavaScript

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    JavaScript Company in California - FAQs

    Are you looking for the top JavaScript companies in California? ITProfiles has carefully curated a list of leading JavaScript companies in California, United States based on certain qualitative and quantitative metrics. You can search, compare, and contact these companies based on your criteria. You can also check details about these leading JavaScript companies in California such as their profiles, portfolios, and recent client reviews (Mar 2025 updated) to decide on your JavaScript project.

    How many JavaScript companies are there in California?

    There are 15 companies on ITProfiles specializing in JavaScript and based in California.

    How much does it typically cost for JavaScript in California?

    The average project cost for JavaScript companies in California on ITProfiles ranges from $10,000 to $25,000. Pricing varies based on project complexity, scope, timeline, and required expertise. Many companies offer flexible pricing models, such as hourly rates, fixed prices, or dedicated team arrangements. For an accurate estimate, requesting a quote tailored to your specific needs is best.

    Can I contact multiple companies for a project proposal?

    Absolutely! It's recommended to contact multiple JavaScript companies in California for project proposals. This allows you to compare their offerings, expertise, pricing, and approach before deciding.

    Can I get a free quote for my JavaScript project?

    Yes, many JavaScript companies in California offer free quotes for projects. Simply submit your project details, and we’ll handpick the top five service providers that best match your needs. These companies will then reach out to you with an ITProfiles reference, providing an estimated cost and timeline for your project.

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