Top JavaScript Сompanies in London

25 Firms

Best London JavaScript Web Development Firms

Digital marketing agency that serves ForbesGlobal
4.9

We could write a long, boring (or attractive) story about our successful cases and the experts who work on our team, but we won't. We don't tell stories, we give you results from the first day you sign a contract. Just write us and you will see the difference in approach between us and other agencies.

Overview CHANGES
  • CHANGES Project's Size

    $1,000 +

  • CHANGES Number of Employees

    10 - 49

  • CHANGES Hourly Rate

    $50 - $99 / hr

  • CHANGES Location

    GB, London

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Think Digital. Think ClerksWell.
4.9

We’ve worked with a number of clients who specialize in the financial, professional and membership sectors to deliver creative, beautifully designed and well-implemented solutions that meet and exceed their digital needs.

ClerksWell is an award-winning digital agency and gold partner of Microsoft 365, Sitecore and Umbraco, soon to celebrate 25 years of technical innovation and client success. As an award-winning transformation agency, we succeed by solving complex digital problems and finding smart solutions. Check out our services to see how we can help your organization achieve its goals.

Overview ClerksWell
  • ClerksWell Project's Size

    $50,000 +

  • ClerksWell Number of Employees

    50 - 249

  • ClerksWell Hourly Rate

    $100 - $149 / hr

  • ClerksWell Location

    GB, London

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Providing Solutions That Make a Difference
4.9

Competition is fierce out there – your customers hold you to increasingly high standards. And the market is changing, too. You have to stay on top of it all, from new channels to altered consumer behaviors. We’ll help you find revenue streams that range from incremental to disruptive, refreshing and evolving, to fulfil your customers’ unmet needs, which might mean new products, expanded offerings or an entirely different business model.

Founded in 1993 and with roots in Belarus and the United States, EPAM is a New York Stock Exchange listed company (NYSE: EPAM) that leverages its rich software engineering expertise to become a leading company of global product development, digital engineering, and cutting-edge digital product design. EPAM relies on its years of evolved software engineering strength, innovative strategic planning, professional IT consulting services and design capabilities to help clients transform complex and changing business challenges into profitable business opportunities through innovative design and next generation solutions in close partnership with its clients. EPAM’s global team provides original solutions to clients in more than 35 countries and regions across North America, Europe and Asia Pacific.

Recognized by several of the world's top independent research institutes, EPAM is one of the most recognized market leaders in many field. Since 2013, it has been named as one of only four companies of "25 Fastest-Growing Public Companies in Technology" of Forbes for consecutive years. The company also topped Fortune magazine's "100 Fastest Growing Companies" list of 2019 and 2020 respectively. EPAM’s clients span the industries of finance, tourism and consumer goods, high-tech, media & entertainment, life sciences & healthcare, as well as are involved in enterprise technology development and applications, cloud computing and big data. With a unique engineering culture and a tenet of continuous high quality delivery, EPAM focuses on all-round skill enhancement and development of employees.

 

We harness the power of our consultancy & design talent, alongside our data expertise, to work out where we can provide value & address your unique needs.

Overview EPAM
  • EPAM Project's Size

    $5,000 +

  • EPAM Number of Employees

    1,000 - 9,999

  • EPAM Hourly Rate

    $25 - $49 / hr

  • EPAM Location

    GB, London

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Technology Consulting and Web Development
4.9

JustCoded provides FinTech web & mobile app development services. We offer services for financial institutions, banking businesses, and peer-to-peer lending startups. Contact us for more information.

We create digital web solutions for tech startups and established businesses in online investment, crowdfunding, real estate, travel, and art sectors.

With the mission to transform the traditional financial industry and deep expertise in the crowdfunding niche, we build financial solutions to our clients from the UK and Europe: crowdfunding, P2P lending, and other investment platforms. Our goal is to help you build the product from the ground up and overcome challenges with tech and business guidance, involvement, and support at every stage of the journey.

Overview JustCoded
  • JustCoded Project's Size

    $25,000 +

  • JustCoded Number of Employees

    10 - 49

  • JustCoded Hourly Rate

    $100 - $149 / hr

  • JustCoded Location

    GB, London

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Building products that matter
4.8

Verified client review: 'Eastern Peak is very flexible. They're like a partner in terms of thinking and creating new concepts, new features, and new ideas.'

The Europe’s top developers, designers and strategists.

Founded in 2010, we build custom software for startups, mid-size businesses and large enterprises, helping them reach their full potential and increase profit.

DPD, Western Union, Gett, Fly and other global companies rely on our custom web and mobile solutions in their day-to-day operations.

Our offices: London, Tel Aviv, Kharkov, Larnaca

Our principles: We keep your ideas safe; We’re easy to work with; We deliver on-time.

Web Development

  • Business websites and blogs
  • Community portals and e-learning systems
  • Web platforms

Technologies and Tools:

Front-end: HTML5 & CSS3, Angular JS; Back-end: Node js, Ruby on Rails, PHP, Python, .NET; CMS: WordPress, Magento, Drupal, Joomla

Mobile Development

  • iOS apps
  • Android apps
  • TV apps (Roku, Apple TV, etc.)
  • Cross-platform apps

Technologies and Tools:

Native: Objective-C, Swift, JavaScript, Android SDK, Java, C/C++; Cross-platform: React Native, Xamarin, PhoneGap, Unity, Sencha Touch; TV: BrightScript, TVMLJS

Other services:

  • UI/UX, Graphic Design
  • Software testing
  • Technical Support 
  • Marketing Support
  • Technology Consulting 
Overview Eastern Peak
  • Eastern Peak Project's Size

    $25,000 +

  • Eastern Peak Number of Employees

    50 - 249

  • Eastern Peak Hourly Rate

    $25 - $49 / hr

  • Eastern Peak Location

    GB, London

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Outcome focused digital agency
4.8

We offer full product lifecycle support to startups, established businesses and offer specialist consultation to businesses competing in regulated industries, such as challenger banks.

Hustle is a new company with some experienced heads. Our team have held senior positions in the digital growth sector for more than 50 years combined. And they’ve worked with some brands you might recognise, including Disney, BBC, Next, The Co-operative Bank and Direct Line.

We’re an outcome-focused creative agency that loves making and growing beautiful, powerful, and user-focused digital products.

Overview Hustle
  • Hustle Project's Size

    $10,000 +

  • Hustle Number of Employees

    2 - 9

  • Hustle Hourly Rate

    $100 - $149 / hr

  • Hustle Location

    GB, London

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We’re changing the way the world lives and works
4.8

Kainos provides digital technology solutions and Workday deployments that allow organisations and people to work smarter, faster, better. Find out how we work with government and finance as well as offer a full range of Workday HCM technology services.

Kainos Group plc is a high growth, UK-based provider of IT services, consulting and software solutions.

The Group specialises in the development of digital technology solutions; software design and agile software development; third-party software integration and implementation services; automated testing services; technology support services; and related ancillary services such as project management, all provided across multiple sectors.

Overview Kainos
  • Kainos Project's Size

    $50,000 +

  • Kainos Number of Employees

    250 - 999

  • Kainos Hourly Rate

    $200 - $300 / hr

  • Kainos Location

    GB, London

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In Code We Trust!
4.7

Passionate about growth and business development. Entrepreneurial mindset. I am a customer-focused professional. Looking for a software development partner?

In Code We Trust! Build a high-quality product with our product designers and software engineers professionals. We are a software development company that helps businesses grow. The Codest team consists of admirers of modern technologies. In love with Ruby, Rails, Java, JavaScript, React or Vue.

We work according to our rules and truly believe that this is the best way to be successful. It doesn’t mean we are not elastic or not adjustable - our rules are the backbone we follow to stay transparent and predictable. There are only two main rules.
Overview The Codest
  • The Codest Project's Size

    $5,000 +

  • The Codest Number of Employees

    10 - 49

  • The Codest Hourly Rate

    $50 - $99 / hr

  • The Codest Location

    GB, London

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Let’s make your product and team a success
4.7

Experts in Product design and development. Whether you’re building something from scratch or improving an existing product, our design and development consultants have you covered.

We are a team of designers and developers that make web and mobile applications for our clients. We aim to create great user experiences powered by well-made software.

During the sales process, we will seek to understand the jobs your users need to be done. When we start a project, we'll typically run a product design sprint where we create and test a prototype with real people in the first week.

We then design and code while focusing on quality and maintainability. We work iteratively and deploy working code regularly. We have no project managers. Everyone you hire is a designer or developer.

Overview thoughtbot
  • thoughtbot Project's Size

    $25,000 +

  • thoughtbot Number of Employees

    50 - 249

  • thoughtbot Hourly Rate

    $150 - $199 / hr

  • thoughtbot Location

    US, Boston

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Where Software Concepts Come Alive™
0.0

Based on proprietary pioneering business models of Offshore Dedicated Team® and Remote In-Sourcing®, an advanced Technical Debt Reduction Platform (TETRA™), and measurable SLAs for software engineering, Intetics helps innovative organizations capitalize on global talent with our in-depth engineering expertise based on our Predictive Software Engineering framework. Intetics core strength lays in the design of software products in conditions of incomplete specifications. We have extensive industry expertise in Education, Healthcare, Logistics, Life Sciences, Finance, Insurance, Communications, and custom ERP, CRM, Intelligent Automation, and Geospatial solutions. Our advanced software engineering background and outstanding quality management platform, along with an unparalleled methodology for talent acquisition, team building, and talent retention, guarantee that our clients receive exceptional results for their projects. At Intetics, our outcomes do not just meet clients' expectations, they have been exceeding them for a quarter of a century.

Overview Intetics Inc.
  • Intetics Inc. Project's Size

    $50,000 +

  • Intetics Inc. Number of Employees

    250 - 999

  • Intetics Inc. Hourly Rate

    $50 - $99 / hr

  • Intetics Inc. Location

    US, Naples

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Software is our craft

We write beautiful web applications that are durable and free of defects in workmanship.

8th Light is a software consultancy that is passionate about building productive long-term partnerships with its clients, its employees, and the software community.

Our team of multi-disciplined software professionals are experts in applying the principles and practices of software craftsmanship in all different languages and frameworks. Whether training in a classroom setting, developing in our Studio, or embedded inside of client teams, we follow principled processes that prioritize the long-term health of the software.

Our innovative Modern Apprenticeship Program emphasizes hands-on learning curated by a working professional, and prepares developers from a wide range of backgrounds to have long careers on our team as professional developers and consultants.

8th Light promotes the idea of software craftsmanship by organizing and hosting events, talks, and conferences. You can view some of our past MeetUp talks on 8th Light’s YouTube page.

How to become a software craftsman

At 8th Light, we craft software—from web applications to robotics—that is beautiful, durable, and shows pride in workmanship.

We are skilled.

We have expertise in a variety of programming languages. We offer a suite of services designed to meet the needs of your web, mobile, and embedded projects.

We are agile.

We iterate rapidly to deliver on time and under budget. To ensure success we program in pairs, drive development through tests, and continuously integrate.

We are principled.

We maintain partnerships with clients that are meaningful, respectful, and productive. We'll listen closely to your needs, and work hard to exceed your expectations.

We are educators.

We offer apprenticeships that will push the limits of your knowledge, and help prepare you for a career in software development.

Overview 8th Light
  • 8th Light Project's Size

    $5,000 +

  • 8th Light Number of Employees

    50 - 249

  • 8th Light Hourly Rate

    $150 - $199 / hr

  • 8th Light Location

    US, Chicago

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Creating user value and business growth

We build vibrant, digital-first brands that differentiate in a crowded market. We design innovative products and services that exist at the centre of consumers’ lives. We accelerate technical development as an extension of our clients' engineering team.

Overview Athlon
  • Athlon Project's Size

    $25,000 +

  • Athlon Number of Employees

    50 - 249

  • Athlon Hourly Rate

    $100 - $149 / hr

  • Athlon Location

    GB, London

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Delivering Excellence with Enterprise Experience

We are proud of the success and recognition we have achieved through our hard work,commitment and passion.

Overview Clavax
  • Clavax Project's Size

    $10,000 +

  • Clavax Number of Employees

    50 - 249

  • Clavax Hourly Rate

    $25 - $49 / hr

  • Clavax Location

    GB, London

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Holistic Software Solutions for Growing Startups

CML Team LTD is a consulting firm of young ambitious professionals, which creates integrated solutions and platforms for startups and enterprises.

We have been on the market since 2018. Over the years, our team has hired not only experienced but also knowledgeable specialists to fill the most in-demand jobs, thereby, we have set the bar high, which we exceed every day.

Overview CML Team LTD
  • CML Team LTD Project's Size

    $5,000 +

  • CML Team LTD Number of Employees

    10 - 49

  • CML Team LTD Hourly Rate

    $50 - $99 / hr

  • CML Team LTD Location

    GB, London

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Award-Winning Mobile App Development Company

We are No “Yes-Man” or just “Another Dev Shop”. We are experts in providing digital solutions with a consulting led approach that fuels innovation and business efficiency.

Estech Digital puts together a bunch of passionate minds to transform your visions into reality imparting an awesome digital experience for your users. From Mobile Apps, website design, development, scalable web apps to SaaS platforms, the solution we engineer accelerate efficiency and fuel growth for our clients.

Overview Estech Digital
  • Estech Digital Project's Size

    $10,000 +

  • Estech Digital Number of Employees

    50 - 249

  • Estech Digital Hourly Rate

    $25 - $49 / hr

  • Estech Digital Location

    GB, London

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Bespoke websites, web applications, mobile apps and software
  • Forward Digital Project's Size

    $5,000 +

  • Forward Digital Number of Employees

    2 - 9

  • Forward Digital Hourly Rate

    $50 - $99 / hr

  • Forward Digital Location

    GB, London

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UX & Product Design | Bespoke App Development

We work alongside our clients to plan, design and build a roadmap of releases for their applications, and journey with them in the support and evolution of their product. A lot of our startup clients like the fact that we effectively become product owners of their app.

Overview Full Clarity
  • Full Clarity Project's Size

    $5,000 +

  • Full Clarity Number of Employees

    2 - 9

  • Full Clarity Hourly Rate

    $100 - $149 / hr

  • Full Clarity Location

    GB, London

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Bring Your App Idea To Life

In a tech landscape in which only 17% of projects succeed, you need a team that tells it like it is and puts quality above all else. In short: creative and realistic.

Overview Hyper Apps
  • Hyper Apps Project's Size

    $10,000 +

  • Hyper Apps Number of Employees

    10 - 49

  • Hyper Apps Hourly Rate

    $25 - $49 / hr

  • Hyper Apps Location

    GB, London

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Award Winning Agency with Competitive Day Rates

Combining our unique Product Design Process and Agile Development Process we follow a proven user-centric methodology that ensures all features and goals are met.

Overview Imaginary Cloud
  • Imaginary Cloud Project's Size

    $5,000 +

  • Imaginary Cloud Number of Employees

    50 - 249

  • Imaginary Cloud Hourly Rate

    $50 - $99 / hr

  • Imaginary Cloud Location

    GB, London

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We Code Creativity.

We can create an online presence to help take your business to the next level.

Overview Lab3 Apps
  • Lab3 Apps Project's Size

    $1,000 +

  • Lab3 Apps Number of Employees

    2 - 9

  • Lab3 Apps Hourly Rate

    $100 - $149 / hr

  • Lab3 Apps Location

    GB, London

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Content, Platform, Performance

We will build web and native apps which were crafted, optimized and personalized and now can already be brilliantly useful and deliver you real business results.

Overview Mediablaze
  • Mediablaze Project's Size

    $25,000 +

  • Mediablaze Number of Employees

    10 - 49

  • Mediablaze Hourly Rate

    $100 - $149 / hr

  • Mediablaze Location

    GB, London

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Business Software. Sorted.

SovTech is an end-to-end custom software development company that designs, builds, deploys and maintains mobile and web applications. This helps start-ups and corporates like you start, run and grow WORLD-CLASS businesses.

Overview SovTech
  • SovTech Project's Size

    $5,000 +

  • SovTech Number of Employees

    50 - 249

  • SovTech Hourly Rate

    $25 - $49 / hr

  • SovTech Location

    GB, London

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Don’t follow digital trends, start them.

Techtiq is an in-house team of professional and passionate software developers from London that build game-changing apps. Founded in 2017, the digital agency offers top-notch solutions for businesses and has great experience in web design, custom CMS development, and mobile app development.

The agency offers advanced solutions for solving common business problems and simplifying business operations. With the help of Techtiq, any business can efficiently connect the brand to its customers or build a new business model.

The award-winning London agency knows how to properly combine modern technologies to create quality and scalable platforms.

At Techtiq, talented developers use the following popular programming languages and frameworks: PHP, Python, HTML5, Java, Laravel, Angular, Node.js, Django, React, etc. If you need a reliable website on WordPress, Magento, Shopify, or OpenCart e-commerce platform, Techtiq can become your #1 agency.

Typically, the agency helps startups, educational organizations, and mid-sized businesses.

Techtiq services and solutions are as follows:

  • Mobile (Android/iOS) and web app development;
  • E-commerce apps (OpenCart, Shopify, Magento);
  • Tailor-made web and cloud-based portals;
  • Custom CMS development (incl. WP and Drupal).

Techtiq's list of solutions includes a GQS mobile app for investors of a hedge fund, a comprehensive eCommerce website for LDA (London Domestic Appliances), 5 separate web portals + two mobile apps for sports clubs and schools to track the players' welfare, HiDonate mobile app for charity on various missions, and a business tracker. So if your project is related to any of these solutions, you can turn to the agency to see what it can offer your business.

When developing projects, the team behind Techtiq follows a simple path that goes in the following stages:

  • Planning and design. While being focused on the end results, experts at Techtiq will first get to know your business and your potential customers. They will study the market to create an efficient implementation plan that will help build a perfect solution that will meet your requirements;
  • Development. Techtiq's experienced team of developers and designers will create a prototype and design a concept of the solution to then seamlessly bring the idea to life;
  • Test, launch, and support. At Techtiq, testing software solutions is conducted in the most careful way. Professional testers make sure the product is bug-free and ready to see the world. They will then continue to track the solution and provide support for future updates.

You can visit the official website to see their portfolio or have a chat with a team that will be working on your project. Moreover, by applying to the agency, you can also become part of the team and learn how to deliver quality and exciting experiences yourself.

Find Techtiq on Instagram, LinkedIn, and Facebook to know more about the agency and how the team delivers successful innovative digital experiences to businesses.

Overview Techtiq
  • Techtiq Project's Size

    $5,000 +

  • Techtiq Number of Employees

    10 - 49

  • Techtiq Hourly Rate

    $100 - $149 / hr

  • Techtiq Location

    GB, London

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Life, Made Mobile

We're expert in smooth porting of desktop sites to mobile responsive sites, suitable for phones, tablets and desktops. Waracle has been designing & building mobile apps since 2007, and has built extensively on ALL platforms.

Overview Waracle
  • Waracle Project's Size

    $100,000 +

  • Waracle Number of Employees

    50 - 249

  • Waracle Hourly Rate

    $150 - $199 / hr

  • Waracle Location

    GB, London

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Zenibyte Creative Ltd

Zenibyte is built on three fundamental pillars: client satisfaction, time management and quality service delivery. All our projects are a result of our strong belief in achieving the highest level of efficiency concerning these three pillars. Our development approach is a unique blend of agility, adaptability and expertise to ensure the end product is always aligned to your business goals and accelerates your growth.

Zenibyte is a streamlined, innovative agency which offers dedicated digital business solutions & projects worldwide to businesses from start-ups to MNCs. Our experts have extensive cutting-edge knowledge of software, design and application development which permits us to deliver high-quality tailored solutions to minimize costs and maximize your sales.

No matter what your business needs, whether it’s existing applications or build a powerful new application, with our highly dedicated, skilled and experienced professionals.

Overview Zenibyte Creative
  • Zenibyte Creative Project's Size

    $1,000 +

  • Zenibyte Creative Number of Employees

    10 - 49

  • Zenibyte Creative Hourly Rate

    $25 - $49 / hr

  • Zenibyte Creative Location

    GB, London

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