Top 100 JavaScript Development Companies in Spain
The Best of December 2025Looking 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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1$25,000+250 - 999 employeesBarcelona, SpainRead More
Multiplica, an UX design company, was established in 2000. The agency focuses on ux/ui design, digital strategy, and social media marketing and has a small team.
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2$25,000+50 - 249 employeesLas Palmas de Gran Canaria, SpainLasting Dynamics is a midsize app development company. Founded in 2015, the company is headquartered in Torre del Greco, Italy and Las Palmas de Gran Canaria, Spain. Their team offers Mobile App Development, Web Development, Artificial Intelligence, Custom Software Development, and more.Read More
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Sunrise.chIndustries
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3$25,000+10 - 49 employeesLos Angeles, CAVrrb - Web & Product Design Agency is a web design agency. They specialize in Web Design, Web Development, Branding, UX/UI Design, and more and were founded in 2007. Their small team is headquartered in Los Angeles, California; Barcelona, Spain and Barcelona, Spain.Read More
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Ferrari Visa HP LeicaIndustries
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4$5,000+10 - 49 employeesBarcelona, SpainE-commerce development company Teplin was launched in 2015. Their small team is in Barcelona, Spain and New York, New York. Their services include E-Commerce Development, UX/UI Design, and Web Development.Read More
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5$10,000+10 - 49 employeesCastelldefels, SpainUnimedia Technology is a software development company. Located in Castelldefels, Spain, their small team focuses on Custom Software Development, Artificial Intelligence, Web Development, AI Agents, and more. The firm was launched in 2017.Read More
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ZellarIndustries
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6$25,000+10 - 49 employeesBarcelona, SpainRead More
AppDrawn is a software solutions company founded in 1999. Their headquarters are in London and they have a second office in Barcelona. Across these 2 locations, they have a team of a dozen staff that do custom software development, web development, and mobile app development for small and medium-size businesses.
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AspireIndustries
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7$5,000+2 - 9 employeesBarcelona, SpainBased in Barcelona, Spain, INSIDEERS is a small web development company. They offer web development, web design, ux/ui design, branding, and more and were launched in 2019.Read More
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Red PointsIndustries
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8$1,000+2 - 9 employeesBarcelona, SpainRead More
Nexus Creative Agency - Web Design & Development is a web design agency. They offer web design, ux/ui design, web development, branding, and more and were launched in 2020. Their small team is London, United Kingdom-based.
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9$25,000+10 - 49 employeesLas Palmas de Gran Canaria, SpainRead More
Based in Las Palmas, Spain, Secret Source is an outsourcing development company founded in 2008. Their team of 28 specializes in web design, web development, e-commerce development, mobile app development, and more.
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InformaIndustries
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10$5,000+2 - 9 employeesApeldoorn, NetherlandsRead More
Dutch Synergy is a digital marketing consultancy based in Estepona, Spain, and founded in 2015. Their team of fewer than 10 offers digital strategy, web design, and content marketing solutions for clients in the fields of manufacturing and business services.
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YANMAR EuropeIndustries
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11$25,000+10 - 49 employeesBarcelona, SpainRead More
SystemSeed, founded in 1997, is a Drupal servicer provider headquartered in Dover, DE with offices in the United Kingdom. SystemSeed is composed of under ten employees, each of whom works to provide web development, e-commerce development, UX/UI design, and digital strategy services to small- and mid-market businesses.
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KrengeltechIndustries
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12$10,000+2 - 9 employeesBarcelona, SpainRead More
Located in Barcelona, Spain, Onabitz is a small application development firm. They provide mobile app development, ux/ui design, e-commerce development, and web development and were founded in 2017.
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Vall d'Hebron - Barcelona Campus HospitalariIndustries
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13$10,000+10 - 49 employeesMadrid, SpainRead More
Launched in 2017, Etéreo is a small software development firm located in Madrid, Spain. Their services include custom software development, web development, mobile app development, enterprise app modernization, and more.
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14$5,000+10 - 49 employeesMadrid, SpainEstablished in 2014, i-Labs App Development is an app development company. Their small team is headquartered in New York, New York; Madrid, Spain and Dubai, United Arab Emirates and provides Mobile App Development, UX/UI Design, Web Design, Web Development, and more.Read More
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15$1,000+2 - 9 employeesLas Palmas de Gran Canaria, SpainStudio Mate Web is a small custom software development company. The Milano, Italy-based company was established in 2022. Their services include Custom Software Development, Web Development, E-Commerce Development, Web Design, and more.Read More
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16$5,000+10 - 49 employeesMadrid, SpainRead More
iphonedroid is a mobile strategy consulting firm located in Madrid, Spain. It was founded in 2009 and now has a team of about 50 that does mobile app development, web development, web design, and UX/UI design
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Prosegur -
17$10,000+10 - 49 employeesValencia, SpainRead More
Yeeply Mobile is a mobile development marketplace headquartered in London with offices in Paris and Valencia, Spain. Founded in 2012, Yeeply Mobile's team of around 30 employees primarily provides mobile app development services, but can also offer UX/UI design and mobile & app marketing capabilities.
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LaLiga Fantasy -
18$10,000+10 - 49 employeesLas Palmas de Gran Canaria, SpainRead More
Established in 2018, Squaads is a small mobile app development company. Their team offers mobile app development, web development, custom software development, enterprise app modernization, and more. The agency is based in Las Palmas de Gran Canaria, Spain.
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19$5,000+10 - 49 employeesGranada, SpainRead More
Small web development firm Jensen Technologies, is based in Granada, Spain. Founded in 2009, the team offers web development and mobile app development.
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World Health OrganizationIndustries
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20$10,000+10 - 49 employeesMadrid, SpainRead More
redradix is a boutique design and development agency, founded in 2010 and located in Madrid, Spain. They have 25 employees specializing in web development and design, UI and UX design, mobile platforms, and CMS. They typically work with small and midmarket companies in advertising and marketing, healthcare, and finance.
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GMVIndustries
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21$5,000+2 - 9 employeesBarcelona, SpainRead More
GCT Company is a software development company based in Zaporyzhzhia, Ukraine. The company, founded in 2018, has a team of less than ten that provides web development and mobile app development services to small and mid-market companies in various industries that include education and financial services.
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RenoIndustries
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22$1,000+2 - 9 employeesMadrid, SpainEstablished in 2020, Zolution Society is a web design agency. Their small team is headquartered in Madrid, Spain. Their team provides web design, web development, ux/ui design, branding, and more.Read More
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23$1,000+2 - 9 employeesZaragoza, SpainStable Tech, an IT strategy consulting company, is in Zaragoza, Spain. They offer IT strategy consulting, IT managed services, Web Development, Application Management & Support, and more and were founded in 2022.Read More
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24$5,000+10 - 49 employeesOlot, SpainRead More
Volcanic Internet is a small software development firm in Olot, Spain; Barcelona, Spain; Amsterdam, Netherlands and Wales, United Kingdom. Launched in 2009, the team offers custom software development, web development, e-commerce development, mobile app development, and more.
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25$1,000+10 - 49 employeesBarcelona, SpainBased in West New York, New Jersey and Barcelona, Spain, Shugert Marketing is a branding agency. The small team focuses on Branding, Social Media Marketing, Search Engine Optimization, Pay Per Click, and more and was established in 2012.Read More
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EnvirotechIndustries
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26$10,000+2 - 9 employeesBarcelona, SpainWebsite development company and mobile application development company Alameda Dev provides Web Development and Mobile App Development. They were founded in 2009.Read More
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27$5,000+10 - 49 employeesMarbella, SpainFounded in 2018, WeLoveWeb.eu, a small web development company and e-commerce development firm, is located in Marbella, Spain. Their team specializes in Web Development and E-Commerce Development.Read More
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28$1,000+10 - 49 employeesAlicante (Alacant), SpainRead More
WebExito, a social media marketing company, is located in Alicante, Spain. The agency provides social media marketing, search engine optimization, web design, graphic design, and more and has a small team.The agency was established in 2013.
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29$25,000+10 - 49 employeesMadrid, SpainRead More
Founded in 2005, SerCompany is a web development agency that offers web development, e-commerce development, and mobile app management and support to their enterprise, mid-market, and small business clients in the IT, financial services, and education industries. Their 50 employees are based out of Kyiv and Kharkov, Ukraine.
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Listing ZIndustries
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30$5,000+10 - 49 employeesBarcelona, SpainMarsBased is a website development firm. Headquartered in Barcelona, Spain, the team offers Web Development and Mobile App Development.Read More
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