Top 50 JavaScript Development Companies in Barcelona
The Best of December 2025Looking for a top JavaScript developer in Barcelona?
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 Barcelona. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Barcelona JavaScript Developers
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1$1,000+1,000 - 9,999 employeesDallas, TXProbey Services is a web design company founded in 2016. The large team specializes in Web Design, Web Development, Mobile App Development, and Custom Software Development. The agency is based in London, England; New York, New York; Noida, India and Toronto, Canada.Read More
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2$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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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$50,000+10 - 49 employeesParis, FranceBoldheart, a mobile application development firm, was founded in 2020. The agency specializes in Mobile App Development, Custom Software Development, UX/UI Design, IT strategy consulting, and more and has a small team. The agency is in Berlin, Germany; München, Germany; Zürich, Switzerland and Wien, Austria.Read More
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ValoraIndustries
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6$100,000+1,000 - 9,999 employeesSan Francisco, CARead More
Headquartered in San Francisco, Wizeline is a global technology services provider with delivery centers in Mexico, Colombia, Spain, and Vietnam. Since its founding in 2014, Wizeline has grown to over 1,300 employees specializing in product/platform development, UX design, data & AI, cloud & DevOps, and product evolution services.
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7$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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8$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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9$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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10$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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11$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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12$10,000+10 - 49 employeesSant Cugat del Vallès, SpainGreatDev OÜ is an e-commerce development firm. They are headquartered in Sant Cugat del Vallès, Spain; Kharkiv, Ukraine and Ocean City, Delaware and have a small team. Their services include E-Commerce Development, Web Development, and Artificial Intelligence.Read More
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WallsNeedLoveIndustries
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13$10,000+10 - 49 employeesSant Cugat del Vallès, SpainRead More
AXIOMA is a web development firm located in Riga, Latvia. Founded in 2009, AXIOMA's team of 16 employees has nearly a decade of experience in web design and development. The firm also offers SEO services to its clients. AXIOMA primarily works with smaller and mid-market clients from the advertising, business services, and financial services industries.
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WargamingIndustries
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14$25,000+10 - 49 employeesBarcelona, SpainRead More
Hello Pomelo is a software development company founded in 2017 in Paris and with secondary offices in Bordeaux, France and Barcelona, Spain. With about 20 employees on their team, they offer custom software development, web development, and mobile app development mostly to medium-sized companies in financial services, media, business services, and education sectors.
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BNP ParibasIndustries
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15$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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16$5,000+10 - 49 employeesBarcelona, 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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17$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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18$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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19$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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20$25,000+2 - 9 employeesBarcelona, SpainRead More
Claw Studios is a software company based in Cordoba, Argentina. Founded in 2017, their team of approximately 3–4 employees primarily serves small businesses in the business, IT, and consumer goods sectors. Their expertise encompasses web, mobile, and custom software development.
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Aspen ConsultoresIndustries
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21$10,000+10 - 49 employeesBarcelona, SpainSmall website development company Digital Quick Pragmatic Team, is in Dover, Delaware and Barcelona, Spain. Established in 2015, the team provides Web Development, Mobile App Development, IT staff augmentation, and Artificial Intelligence.Read More
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Haymarket Media PRI Healthcare SolutionsIndustries
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22$1,000+2 - 9 employeesBarcelona, SpainMurre Agency is a Barcelona, Spain-based web development company. The small team provides Web Development, Search Engine Optimization, E-Commerce Development, Web Design, and more and was founded in 2024.Read More
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23$1,000+2 - 9 employeesBarcelona, SpainOnyx8 Digital Agency is a small SEO services firm launched in 2024. Their team specializes in Search Engine Optimization, E-Commerce Development, Web Design, Web Development, and more. The firm is based in Barcelona, Spain and New Castle, Delaware.Read More
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La COLOMBE Schoenemoebel Berlin The Cabinet Spot.com Lumiform AppIndustries
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24$50,000+2 - 9 employeesBarcelona, SpainMVP Builders is a small Ciudad Autónoma de Buenos Aires, Argentina-based website development company. Established in 2020, the team provides web development, web design, and ux/ui design.Read More
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25Undisclosed10 - 49 employeesBarcelona, SpainRead More
Slashmobility is a mobile application development firm based in Barcelona, Spain with offices in Madrid and London. Founded in 2010, the company has about 35 employees that primarily build enterprise mobile solutions for corporate clients. Slashmobility's services include mobile app development, UX/UI design, web development, application testing, and wearable app development.
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Desigual, is a textile company, present in 72 countries with over 400 stores and an annual growth above 50% through internationalization and innovation.Industries
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26$1,000+2 - 9 employeesBarcelona, SpainWacdis Software is a web development firm. Established in 2007, the agency is in Barcelona, Spain. Their services include Web Development and Web Design.Read More
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27$25,000+2 - 9 employeesBarcelona, SpainHeadquartered in Barcelona, Spain, The Crafters Lab is a web development company. Their services include Web Development and Custom Software Development.Read More
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28$10,000+1,000 - 9,999 employeesWarszawa, PolandInnowise, a cloud consulting & SI company, is in Warszawa, Poland; Bruxelles, Belgium; Francavilla al Mare, Italy and Genève, Switzerland. The large team provides cloud consulting & SI, IT staff augmentation, Custom Software Development, Web Development, and more. The agency was founded in 2007.Read More
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TopconIndustries
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29$10,000+50 - 249 employeesKraków, PolandHalo 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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30$1,000+10 - 49 employeesBarcelona, SpainFEEL! is a Barcelona, Spain-based Digital Strategy company. Their services include Digital Strategy and Search Engine Optimization.Read More
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