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Last updated 16 September, 2025

Best JavaScript Developers in the United Kingdom (UK)

JavaScript has become the backbone of modern web and mobile applications, powering everything from dynamic user interfaces to scalable enterprise platforms. Businesses across the globe rely on expert JavaScript development companies in the UK to create robust, secure, and future-ready solutions using frameworks such as React.js, Angular, Vue.js, and Node.js.

The UK is home to a vibrant tech ecosystem, with leading JavaScript developers offering full-stack expertise, custom web application development, and enterprise-grade services. These JavaScript developers in the United Kingdom (UK) specialize in building interactive digital platforms, cross-platform applications, and tailored software that align with diverse business goals.

Whether you are a startup seeking affordable yet skilled JavaScript developers, or an enterprise looking for leading JavaScript development service providers in the UK, the top companies listed here represent some of the most trusted, experienced, and innovative names in the industry. Their proven track records, client-centric approaches, and deep technical know-how make them the ideal partners for businesses aiming to stay ahead in the digital era.

Top 10+ JavaScript Development Companies in the UK

323 Companies | Last Updated 17 September, 2025

Cleveroad is the top end-to-end software development company. We create web and mobile products from scratch, set up marketing plans, and provide continuous support services. We follow the Agile methodologies, which lets us stay in touch with clients, and upgrade info after each sprint, deliver projects in time and within budgets. During 5 years we have successfully delivered 150 projects and have…Explore the detailed profile of Cleveroad

GS

Communication with the team is very high-level.

  • 51 to 250

  • $26 - $50

  • $5001 - $10000

  • UK, Estonia, USA+1

Konstant Infosolutions

Providing Strategic Digital Solutions

Konstant Infosolutions is a globally recognized mobile app development company along with a successful work experience in web development. With the vision to become the most trusted offshore IT solutions partner for businesses and organizations worldwide, Konstant is continuously adopting new and latest technology trends coming up in iPhone and Android app development and various other verticals.…Explore the detailed profile of Konstant Infosolutions

Marco

Great experience, highly recommended!

  • 51 to 250

  • Up to $25

  • $5001 - $10000

  • UK, India, USA+1

The NineHertz

Eminent Mobile App & Web Development Company

The Nine Hertz is a Mobile app and Web development company, which tends to mingle IT solutions with the knack of creativity. Web and Mobile Application development come like passion to us. With a bird’s eye view, we keep ourselves abreast with the changing scenarios and approaching solutions. Nothing comes easy but constant efforts make it possible to survive and thrive through the challenges. We serve our clients with innovation in mind and zeal in the deals. We are known to put the right amount of contrast in the ongoing trends. We…Explore the detailed profile of The NineHertz

  • 51 to 250

  • Up to $25

  • Less than - $5000

  • UK, USA, Canada

We are one of the top custom software development agencies in Europe and the United States. Our vast experience in developing mobile, IoT, and web applications position us as a market leader, an expert, and a reliable partner for mid-size as well as large enterprises. Our strong market position is supported not only by years of experience but also a vast portfolio of successful projects for companies…Explore the detailed profile of Ready4S

Temi

A development company building cutting edge web apps

  • 51 to 250

  • $26 - $50

  • $10001 - $25000

  • UK, USA, Poland

Seasia Infotech

(1 Reviews)

A CMMI Level 5 Company

Established in 2000, SEASIA INFOTECH proudly serves as a leading provider of IT consulting and software development services, headquartered in India. With a comprehensive suite of services including enterprise development, application development, marketing strategies and outsourcing technologies, we deliver efficient, tailor-made solutions that align with your specific business goals. Our esteemed…Explore the detailed profile of Seasia Infotech

Shelly

They’re excellent programmers and know how to come up with innovative solutions that meet our ultimate goals.

  • 251 to 1000

  • $26 - $50

  • $10001 - $25000

  • UK, USA, India+3

SemiDot InfoTech

Right Technology Partner for Next Generation IT Solutions

SemiDot Infotech is a Top rated multi award winning software development company providing a full suite of services and solutions like website development, mobile application development, software development, blockchain development, crypto currency development, NFT marketplace development & e-wallet app development to small, medium, big enterprises, product companies & new-age start-ups. We have our presence in 4 big countries like the USA, UK, Dubai, and India. Our expertise lies around the 6 building blocks for Digitization – blockchain,…Explore the detailed profile of SemiDot InfoTech

  • 11 to 50

  • Up to $25

  • $5001 - $10000

  • UK, USA, India+1

Let's Nurture

Nurturing the world by employing technologies.

Let's Nurture is established in 2008 offering advanced IT solutions for developing your successful Software Development Services across the globe. We have a team of experience working with multiple technologies with customization, upgrading applications and maintaining and migrating applications. We are an IT outsourcing and consulting company have a fleet of records of catering to a wide array of industries for varied verticals. We, at Let's Nurture, have a seasoned team of Web & Mobile Platform Experts, with 10+ years of proven experience…Explore the detailed profile of Let's Nurture

  • 51 to 250

  • $26 - $50

  • $5001 - $10000

  • UK, India, USA+3

Dev Technosys Pvt Ltd

(4 Reviews)

Inspired By Thoughts

Dev Technosys is an ISO 9001:2015 Certified Web and Mobile App Development Company, hailing from India. Ever since our inception, we have worked on the concept of making technology accessible, comprehensible and approachable for enterprise all over the global landscape. We are a globally recognized development company that offers high-end technical aid with our extensive knowledge and love for technology.…Explore the detailed profile of Dev Technosys Pvt Ltd

Deepak

They really put their minds and hearts into this project

  • 51 to 250

  • Up to $25

  • $5001 - $10000

  • UK, India, USA+2

LogicRays Technologies Pvt Ltd

Logic Built for Innovation. eCommerce Website Development

LogicRays Technologies Pvt. Ltd. is an empowering Website & Application Development, and eCommerce Development company based in India. Being a best App &Web Development company, we provide numerous choices in our services provided by the wizards of the App & Web Development industry. Our unique abilities we developed throughout the 11 Years of journey, help us work with the best clientele base.  The services we offer is; Magento Development, iOS Development, Android Development, AI & ML Development, Python Development, Flutter…Explore the detailed profile of LogicRays Technologies Pvt Ltd

  • 51 to 250

  • Up to $25

  • Less than - $5000

  • UK, India, Australia

Krify Software Tech Pvt Ltd

Passionate to create value

Krify is a bespoke mobile applications and software services provider based in UK, USA and India. Creating value for our clients is our passion and software technology is our forte. We offer a full suite of design and development services. Whether you are working on a new idea or looking to make a few small changes, our team has solutions that can fit your needs. From the past 20 years, we have delivered…Explore the detailed profile of Krify Software Tech Pvt Ltd

Toby

Their team has got excellent technical skills

  • 51 to 250

  • Up to $25

  • Less than - $5000

  • UK, India, USA

Miquido

(2 Reviews)

Google Certified Agency

Miquido is a full-service tech partner that solves business challenges with cutting-edge technology. With 10 years of experience, we transform bold business ideas into exceptional digital products. We've delivered 150+ solutions for brands like HelloFresh, Nestle, Skyscanner, BNP Paribas, etc.  We offer 360° services:  Web & mobile development AI & ML Product strategy &…Explore the detailed profile of Miquido

Prags

Promptly resolved all our business needs.

  • 51 to 250

  • $51 - $100

  • $25001 - $50000

  • UK, Poland, Germany+1

MobiDev Corporation

(3 Reviews)

MobiDev Corporation is a software engineering and consulting

MobiDev Corporation is a software engineering and consulting company incorporated in the US and the UK, with R&D centers in Poland and Ukraine. Since 2009, MobiDev has specialized in building and modernizing software products, enabling businesses in the US, Canada, and Europe to scale with confidence. Our team of seasoned tech professionals and business experts brings together extensive engineering…Explore the detailed profile of MobiDev Corporation

Alex

Professional and responsive team.

  • 251 to 1000

  • $26 - $50

  • More - than

  • UK, USA

EchoGlobal

(1 Reviews)

Building remote, dedicated dev teams for technology businesses.

We provide exceptional engineering talent that fit your company's values and culture. No AI matchmaking, no piles of barely relevant CVs. Just carefully selected people who would love to work with you. Our services: #StaffAugmentation, #ManagedDevTeams, #TechRecruitment, #ITStaffing.   Explore the detailed profile of EchoGlobal

Oleh

CEO Pettersonapps

  • 11 to 50

  • $26 - $50

  • $10001 - $25000

  • UK, Estonia, Ukraine+2

Magneto IT Solutions

(31 Reviews)

IF YOU CAN IMAGINE IT, WE CAN DEVELOP IT

Magneto IT solutions is a well established and award winning B2C and B2B eCommerce agency founded in 2009. Our core competencies lie in developing market-leading end-to-end B2C, B2B eCommerce solutions development, PIM, CRM, DAM, MDM, DEM development & integration. From creating strikingly beautiful web applications to innovative mobile applications, our team uses the agile methodology to develop…Explore the detailed profile of Magneto IT Solutions

Monica

Amazed with the coordination

  • 51 to 250

  • $26 - $50

  • Less than - $5000

  • UK, India, Bahrain+3

DataArt

(3 Reviews)

A global software engineering firm

Founded in 1997, DataArt is a global software engineering firm and a trusted technology collaborator for market leaders and visionaries. Guided by the People-first principle, our world-class team designs and engineers data-driven, cloud-native solutions that foster progress and deliver immediate and enduring business value. Through our 20+ domain-specific Labs dedicated to R&D and strategic innovation,…Explore the detailed profile of DataArt

Lucy

Delivered a top-notch and scalable product!

  • 1000+

  • $51 - $100

  • $50001 - $100000

  • UK, USA, Germany+1

WDI - A Mobile App Development

Choice for AI-Powered Newage startup solutions

Amongst the Top AI Powered Mobile App Development companies.  We are more than just a development company; we are your strategic partner in innovation. With over 24 years of relentless dedication to excellence, we deliver premium Mobile Apps and AI Powered software solutions meticulously crafted for startups and SMEs worldwide.  Our agile development model guarantees rapid…Explore the detailed profile of WDI - A Mobile App Development

Aidride

WDI is a full-fledged tech company

  • 51 to 250

  • Up to $25

  • Less than - $5000

  • UK, USA, India

Indus Net Technologies

when our customer wins we win

INT is an award-winning digital-first enterprise bringing innovative ideas to life since 1997. Offering simple and sustainable digital solutions with the confluence of technology, analytics and marketing, INT is the trusted partner of fastest growing Agencies, SMEs and Startups across 20+ countries. Our consultative & collaborative approach is analytics driven. It helps enterprises to navigate every facet of the digital landscape, to identify growth opportunities, reveal competitive advantages, and define engaging experiences for their customers. …Explore the detailed profile of Indus Net Technologies

  • 251 to 1000

  • $26 - $50

  • $5001 - $10000

  • UK, India, USA

ITC Infotech

(5 Reviews)

Business-friendly Solutions

ITC Infotech is a leading global technology services and solutions provider, led by Business and Technology Consulting. ITC Infotech provides business-friendly solutions to help clients succeed and be future-ready, by seamlessly bringing together digital expertise, strong industry specific alliances and the unique ability to leverage deep domain expertise from ITC Group businesses. The company provides…Explore the detailed profile of ITC Infotech

Ad

Pleased with the service offered by ITC Infotech.

  • 1000+

  • Up to $25

  • More - than

  • UK, India, USA+13

Vention

(3 Reviews)

Built to scale

Vention, the global leader in software engineering, partners with tech enterprises and startups worldwide, offering access to a network of 3,000+ top engineers. With expertise spanning over two decades, our tailored solutions empower clients to focus on growth, seamlessly matched with top-tier talent from respected tech hubs. Explore the detailed profile of Vention

AJ

They proved to be effective and proactive both in daily communication and in handling complex tasks!

  • 1000+

  • $51 - $100

  • $50001 - $100000

  • UK, USA, Austria+1

  Parangat has the satisfaction of being one of the leading names in the enterprise-level app development space with complete authority in integrating people, processes, and products by providing customized, avant-garde, and cost-effective solutions for iPhone/iPad apps, android apps, website design, and development. Parangat Technologies is a mobile app development company with a global presence. The company specializes in Artificial intelligence including developing AI applications for startups and enterprises.   Artificial Intelligence…Explore the detailed profile of Parangat Technologies

  • 51 to 250

  • $51 - $100

  • $5001 - $10000

  • UK, India, USA

CODIANT, a YASH technologies company,is a leading Custom Web Product Development Company with an immense experience in delivering customized services in the field of Mobile App & Web Development, UI/UX Development, Enterprise Mobility Solutions, and Application Maintenance Services for fortune 500 organizations, mid-size enterprises and startups. We’re an ISO 9001-2008 & ISO/IEC 27001:2013…Explore the detailed profile of Codiant Software Technologies

Basim

Great team and company

  • 51 to 250

  • Up to $25

  • $10001 - $25000

  • UK, USA, Australia+2

Technostacks has successfully carved its niche in designing and building scalable SaaS and IoT software solutions for startups and enterprises across the world.  We deliver complex yet beautiful solutions for our clients to solve real life problems, all the while challenging the status quo of interaction with products.   These products and solutions have disrupted the perception of how people do everyday sanitisation, healthcare consultations, shipping, credit financing, automobile servicing, payroll and school management. Our expertise…Explore the detailed profile of Technostacks Infotech Pvt. Ltd

  • 51 to 250

  • Up to $25

  • $10001 - $25000

  • UK, India, USA+1

Smartlogiq

(3 Reviews)

Software Consulting & Development Outsourcing

We provide technology, talented resources and knowledge to deliver innovation and efficiency. Performance and achievement are our core business. Our mission is to add value to our customers businesses by providing digital and technological innovation services, delivering disruptive results and making our clients stand out in their respective markets.  With offices in the UK-London, US-Delaware…Explore the detailed profile of Smartlogiq

Matt

Their team provided exceptional solutions!

  • 51 to 250

  • Up to $25

  • $25001 - $50000

  • UK

Debut Infotech

(10 Reviews)

Results, Not Promises

Debut Infotech is an all-inclusive custom software development company, specializing in Blockchain, AI, and emerging technologies to build transformative, business-focused software solutions for startups and enterprises alike. Since 2011, we have been enabling startups, SMBs, Fortune 500 companies, and global enterprises to achieve significant business growth and profitability. As a leader in Blockchain…Explore the detailed profile of Debut Infotech

sebastian

Professional and Scalable Stablecoin Development Services.

  • 51 to 250

  • $26 - $50

  • $10001 - $25000

  • UK, India, Canada+1

Nimble AppGenie

(4 Reviews)

Mobile App and Web Development Company

Nimble AppGenie is a market-leading mobile app, web, and software development company, offering innovative services throughout the world. Established back in 2017, we have grown from a small team to a market-leading brand in multiple niches, including fintech app development, eWallet app development, healthcare app development, and much more. Throughout the years, we have worked on over 350 projects.…Explore the detailed profile of Nimble AppGenie

FE

They designed an amazing website for me!

  • 11 to 50

  • $26 - $50

  • Less than - $5000

  • UK, Malaysia, USA

Octal IT Solution

(1 Reviews)

Technology Outsourcing Simplified

Octal IT Solution is an ISO-certified IT service provider that has a global presence in India, the UK, the USA and Singapore. We have a reputation of delivering niche solutions in the area of enterprise mobility, software consulting, app development and IT consultation solutions. With strict discipline towards prominent quality standards, we take client’s ideas and apply our experience to reach…Explore the detailed profile of Octal IT Solution

Angelina

Octal developed a world class Google mobile app with a very impressive user interface.

  • 51 to 250

  • Up to $25

  • $10001 - $25000

  • UK, USA, Singapore+1

Appiqo Technologies

(4 Reviews)

We Always Deliver More Than Expected...!

Appiqo Technologies is a global provider in the Mobile Application development industry. Our main focus on cost effective and high value solutions to all of our clients. We have built a team culture that is focused on client satisfaction and driven by our client needs. Mobile App development has become a inevitable part of the industry with increase in smartphones. We have a team of Talented App developers…Explore the detailed profile of Appiqo Technologies

Himanshu

Great work.. Amazing experience

  • 11 to 50

  • Up to $25

  • Less than - $5000

  • UK, India

Brandconn Digital

Your reliable digital transformation partner

As a leading web design and development company based in India, Brandconn Digital boasts a robust team of 75+ dedicated professionals committed to delivering cutting-edge services that align with the evolving needs of today's digital world. Creative Web Design Expertise Our skilled web designers specialize in crafting responsive and user-friendly websites that showcase exceptional aesthetics and ensure optimal performance. Having designed and developed over 2000 responsive websites, we take pride in our ability to merge creativity with functionality.…Explore the detailed profile of Brandconn Digital

  • 51 to 250

  • Up to $25

  • $50001 - $100000

  • UK, India, Cyprus

Future Processing

Software development, Dedicated teams, Product design,

We are a technology consultancy and software delivery partner.   Founded in 2000 in Poland as a software development company, we are an over 1000-people strong team who deliver end-to-end services, from vision to reality, to clients globally.     We listen, advise, design and deliver world-class, user-friendly IT products for clients in an agile way.  Using our own proven frameworks, we have worked on hundreds of software products for both SMEs and market-leading brands, including Fortune 500 companies.  We support…Explore the detailed profile of Future Processing

  • 251 to 1000

  • $51 - $100

  • $25001 - $50000

  • UK, Poland, Germany+2

Winklix LLC

(2 Reviews)

IT Solution Simplified

Winklix is a US-based Software Development Firm known for providing customized IT solutions worldwide. We provide IT Consulting and Outsourcing services for Software, Websites, and Mobile Apps development and maintenance to help increase your business' overall efficiency & improve your brand image. We also have a specialization in Blockchain app development and IoT based development with team…Explore the detailed profile of Winklix LLC

Ishita

Best App Developer In the town!

  • 251 to 1000

  • $26 - $50

  • $10001 - $25000

  • UK, India, USA+1

Damco Solutions

(7 Reviews)

Ensuring Your Success, Always.

Damco is a US-based technology solutions and IT Services company providing customer-centric services in digital, data, and product development. Our deep industry knowledge, ingenious IT services and solutions, proven capabilities in current and emerging technologies, mature development and testing processes- make us a trusted partner of clients worldwide. Strengthened by CMMi and IS0 quality certifications,…Explore the detailed profile of Damco Solutions

Martin

Improved Accounting Precision and Efficiency with RPA

  • 1000+

  • $51 - $100

  • $5001 - $10000

  • UK, USA, Luxembourg+2

Codal

UX Design Agency

Codal is a full stack UX design and apps development company with over 13 years of industry experience. 300+ mobile apps and websites under our belt. Explore the detailed profile of Codal

  • 251 to 1000

  • $151 - $200

  • $50001 - $100000

  • UK, USA, India+1

ARKA Softwares

Effective! Affordable! Time Groove!

Arka Softwares is an award winning and ISO 9001:2015 certified web and mobile development solution provider company with 150+ passionate developers and designers, based in India, with offices in the USA, UK, and Australia. It's more than 13+ years of history in developing innovative and people-centric mobile apps for businesses worldwide. Our specializations include Mobile app development, Website development, Ecommerce and CMS, Software solutions, Microsoft solutions, QA and testing, Web designing and Security & complaince.  So far,…Explore the detailed profile of ARKA Softwares

  • 51 to 250

  • Up to $25

  • $5001 - $10000

  • UK, USA, India+1

VentureDive

(3 Reviews)

Innovating to improve lives

An award-winning data & AI company dedicated to transforming lives globally through cutting-edge technology solutions. Since its inception in 2012, VentureDive has catalyzed the success of two tech unicorns (Careem & Motive) and spearheaded digital transformations for Fortune 500 companies across BFSI, CPG/retail, healthcare, transportation, logistics, and QSR industries.  The company…Explore the detailed profile of VentureDive

Joyce

Communicative and responsive.

  • 251 to 1000

  • $51 - $100

  • $10001 - $25000

  • UK, USA, UAE+2

Kellton

Infinite Possibilities with Technology

Kellton is a leading global technology solutions company that has been empowering businesses with innovative and cutting-edge technology since 2009. With a team of over 1,800+ highly skilled professionals across the globe, we are committed to helping businesses ranging from funded startups to the Fortune 500, enabling them to transform, grow, and stay ahead of the curve in today's rapidly evolving digital landscape. Specializing in Big Data analytics and AI services, we allow clients to derive actionable insights from vast datasets, facilitating…Explore the detailed profile of Kellton

  • 1000+

  • $51 - $100

  • $50001 - $100000

  • UK, USA, India

Frequently Asked Questions

Hiring JavaScript development service providers in the UK ensures access to highly skilled developers, advanced technology expertise, and reliable project delivery standards. UK-based JavaScript agencies are known for their strong technical proficiency, client-focused approach, and ability to build scalable, secure, and customized applications for your business.

The leading JavaScript development agencies in the UK commonly use frameworks and libraries such as React.js, Angular, Vue.js, Node.js, and Next.js. These JavaScript tools help in building interactive UIs, high-performance web applications, and full-stack solutions.

To find the best JavaScript developers in the UK, evaluate company portfolios, client reviews, technology expertise, and industry experience. Checking their proficiency in modern frameworks, project delivery timelines, and communication practices can help ensure a reliable partnership.

Yes. Popular UK-based JavaScript development service providing companies specialize in full-stack development, combining frontend (React, Angular, Vue) with backend (Node.js, Express) expertise. This allows businesses to build complete, end-to-end digital solutions under one roof.

Absolutely. From affordable JavaScript developers for startups to enterprise-grade software solutions for global brands, UK-based companies cater to businesses of all sizes. They offer flexible engagement models to match varying project needs and budgets.

Yes, top JavaScript software development firms in the UK provide dedicated hiring models. This allows businesses to scale their teams quickly, ensuring faster development process, better collaboration, and cost-efficiency.




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