Top 100 JavaScript Development Companies in Spain
The Best of April 2026Looking for a top JavaScript developer in Spain?
If you're hiring a JavaScript developer to help you build or update a website that's responsive and interactive, consider the pros and cons of JavaScript as a programming language. Advantages include its speed because it's executed on the client-side; reduction in server load; and diverse functionality. Disadvantages to consider include security such as bugs on the client-side.
To assist you in your search for a partner, we’ve compiled this list of the top JavaScript development agencies in Spain. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Spain JavaScript Developers
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151Undisclosed2 - 9 employeesSan Sebastián de los Reyes, SpainTaiko Solutions is a web development firm. The team focuses on Web Development and Web Design, and the firm is headquartered in San Sebastián de los Reyes, Spain.Read More
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152$25,000+10 - 49 employeesMadrid, SpainMapplics is a small mobile application development firm established in 2008. Their services include Mobile App Development and Other Application Development.Read More
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153$50,000+50 - 249 employeesAlacant, SpainRead More
Founded in 2007, INTELLISOFT Corp is a software development company headquartered in Las Vegas, Nev., with two additional offices in Kiev, Ukraine, and Schlieren, Switzerland. INTELLISOFT Corp's team of 16 provides web development, custom software development, and mobile app development, primarily for small and midmarket firms.
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IntelIndustries
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154Undisclosed10 - 49 employeesMálaga, SpainSeniorDev is a custom software development firm launched in 2014. The agency offers Custom Software Development and Web Development.Read More
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155Undisclosed2 - 9 employeesMadrid, SpainWebcuatro is a PPC company located in Madrid, Spain. Founded in 2005, the team focuses on Pay Per Click and Search Engine Optimization.Read More
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156$10,000+50 - 249 employeesValència, SpainSloboda Studio is an IT staff augmentation company. The midsize Berlin, Germany-based company was founded in 2010. Their team specializes in IT staff augmentation, Artificial Intelligence, IoT development, Custom Software Development, and more.Read More
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HuggiesIndustries
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157$10,000+50 - 249 employeesMadrid, SpainSoftware development firm Avalith is based in Hallandale Beach, Florida and Manabi, Ecuador. They offer Custom Software Development and IT staff augmentation.Read More
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158$50,000+250 - 999 employeesMadrid, SpainBased in San Francisco, California; Dubai, United Arab Emirates; Noida, India and Coventry, England, SDLC Corp is a midsize software development firm. Established in 2015, the team provides Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more.Read More
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159$10,000+50 - 249 employeesBarcelona, SpainHalo Lab is a midsize branding agency headquartered in Dubai, United Arab Emirates; New York, New York; 08, Andorra and Odesa, Ukraine. They offer Branding, Web Design, UX/UI Design, Graphic Design, and more and were established in 2013.Read More
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Auth0Industries
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160UndisclosedFreelancer employeesMadrid, SpainMarketing Media Solutions is a social media marketing agency established in 2003. The team focuses on Social Media Marketing and Email Marketing.Read More
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161$10,000+1,000 - 9,999 employeesBarcelona, SpainFounded in 2007, Innowise is a custom software development firm. They are based in Warszawa, Poland; Francavilla al Mare, Italy; Zwolle, Netherlands and Zwolle, Netherlands and have a large team. Their services include Custom Software Development, cloud consulting & SI, IT staff augmentation, Web Development, and more.Read More
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HAYS Commercial Bank Of Qatar Topcon Agriculture IS Engineering Monforts WalzentechnikIndustries
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162$100,000+1,000 - 9,999 employeesMadrid, SpainBaufest is a software development firm. The large Bellevue, Washington-based company was founded in 1991. Their team offers Custom Software Development, BI & big data consulting & SI, cloud consulting & SI, UX/UI Design, and more.Read More
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163$5,000+250 - 999 employeesMadrid, SpainInfograins Software Solutions is a midsize Blockchain company launched in 2011. Their team offers Blockchain, Artificial Intelligence, Custom Software Development, Mobile App Development, and more. The firm is headquartered in New York, New York; Indore, India; London, England and Barangaroo, Australia.Read More
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