All JavaScript Development Consultants in Greater London
TRIARE
4.9(11 reviews)TRIARE unlocks IT potential of YOUR business
TRIARE is a WEB and MOBILE software development company based in Europe. We are delighted to offer our services as your long-term partner, taking all technical matters off your shoulders and allowing you to focus on your business development. YOU WILL GET: ✔ In-house team . Work with a dedicated team that is 100% focused on your product and located in the same office. ✔ Efficiency & transparency , as our process is based on Scrum methodology and managed by certified Scrum Masters. ✔ Fast result. Working with us, you will get the first result in 1 week. ✔ High quality, as TRIARE has well-established processes of software development and experienced specialists. ✔ Full cycle development . Our company covers all stages of development, handling everything from Discovery and prototyping to Design, development, and maintenance. ✔ IP rights . From the very beginning, you are the only owner of the intellectual property of your project materials: source code, design, documentation, etc. ✔ Warranty period will be provided for your system for free. ASPECTS OF OUR MINDSET: - Focused on results. We are focused on the result of your business with an understanding of the real goals and KPIs that our team should achieve. - Solution Provider. It means that we always come to you with solutions, not with questions. We take all technical aspects of the project off your shoulders, allowing you to focus on the marketing and business strategies. - We go the extra mile. Being a proactive company, we always think and take a step ahead. TECHNOLOGIES WE USE: - Mobile app development: Kotlin, Java, Swift, Objective-C. - Cross-platform development: Flutter, React Native. - Web frameworks: Node.JS, React.JS, PHP, Ruby on Rails.Looking for work in Javascript DevelopmentLocated in Greater London, United Kingdom (+3)From €5,000 for Javascript DevelopmentWorked in Hospitals & Healthcare (+20)Speaks English, Ukrainian51-200 membersGRM Digital
5(5 reviews)Digital marketing and technology that drives measurable growth.
Top awardedGRM Digital is an award-winning digital agency helping ambitious businesses generate sustainable growth through SEO, paid media, content, digital strategy and technology. Since 2009, we've worked with organisations to improve their digital visibility, attract the right audiences and turn digital activity into measurable commercial results. Our marketing capabilities include SEO, PPC and paid search, content strategy and creation, digital PR and authority building, analytics, conversion optimisation and wider digital marketing strategy. We don't treat these channels in isolation. Our teams combine marketing expertise with UX, data, design and technology to understand the complete customer journey, from how prospects discover your business through to how they engage, convert and become customers. For organisations looking for an ongoing digital marketing partner, we develop integrated strategies based around clear commercial objectives. This includes understanding your market and competitors, identifying growth opportunities, building the right channel strategy and continuously measuring and improving performance. Unlike agencies focused purely on marketing activation, GRM also has extensive technical expertise across websites, CMS, eCommerce and digital platforms. This allows us to identify and solve the technical, UX and performance issues that can limit marketing results. Whether you need to increase organic visibility, improve paid search performance, create better content, generate more qualified enquiries or build a long-term digital growth strategy, GRM provides the strategy, expertise and ongoing optimisation needed to deliver measurable growth.Looking for work in Javascript DevelopmentLocated in Greater London, United Kingdom (+4)From €1,000 for Javascript DevelopmentWorked in Education (+6)Speaks English, Croatian(+2)11-50 membersSigli
5(11 reviews)Software development, Web development, Data Solutions, AI, ML.
Highly recommendedSigli is a forward-thinking software development company specializing in digital product development and digital transformation. Our mission, ‘ Data Science with Purpose, Innovation with Impact ’, drives us to transform innovative ideas into practical solutions. Our services encompass the entire development lifecycle, from initial concept to implementation, ensuring every product we build is high-quality, scalable, and future-proof. Sigli assists businesses in navigating the complexities of digital transformation, modernizing their operations, enhancing customer experiences, and maintaining a competitive edge in the ever-evolving digital landscape. Our team's deep expertise, combined with a commitment to leveraging the latest technologies and best practices, ensures we deliver impactful results for our clients. Our dedication to excellence is further demonstrated by our ISO/IEC 27001 certification, the leading standard for Information Security Management Systems (ISMS). This certification underscores our commitment to maintaining the highest standards of information security, making us a trusted partner for businesses looking to thrive in the digital age.Looking for work in Javascript DevelopmentLocated in London, United Kingdom (+2)From €1,000 for Javascript DevelopmentWorked in Hospitals & Healthcare (+12)Speaks English, Dutch(+3)51-200 membersPoppins
5(6 reviews)We are a house of strategy, creative, social and digital technology specialists.
RecommendedTop awardedWe craft beautiful brand expressions, digital experiences and products. All underpinned by thoughtful strategy. We’re driven to help our clients be the best version of themselves through the power of brand and digital. Because we’re certain there is something uniquely special inside each and every business.Looking for work in Javascript DevelopmentLocated in Greater London, United KingdomFrom €1,000 for Javascript DevelopmentWorked in Beverage (+12)Speaks English, French(+3)51-200 membersAgile Cyber Solutions Limited
4.9(10 reviews)Transforming Ideas into AI-Driven Web and Mobile Apps.
Highly recommendedFounded in 2012, Agile Cyber Solutions has been helping startups and small and medium enterprises (SMEs) grow with reliable custom software solutions. We specialise in developing AI-integrated products and services that empower SMEs to deliver innovative, modern solutions to their customers. With expertise in both open-source AI models (for privacy-focused solutions) and commercial AI models (for cutting-edge capabilities), we tailor our approach to meet your unique needs. From automating workflows to improving customer experiences, our tools drive efficiency, reduce costs, and enhance the value of your products and services. Get in touch to explore how our AI-powered solutions can transform your business. Our success is rooted in a clear and deliberate approach. We believe in collaboratively challenging solutions and technology choices to refine and align them perfectly. By deeply engaging with business use cases and implementation, we add value beyond coding, turning ideas into practical, impactful solutions. We pride ourselves on the honesty to say no to requests we cannot deliver. By staying super-focused on development and collaborating with experts for areas like UI/UX and SEO, we ensure that every aspect of your project receives the specialised attention it deserves. With a development team in India and a customer-facing team in the UK, we offer the best of both worlds: strong technical expertise and local understanding. Over the years, we’ve successfully delivered more than 350 projects for SMEs across diverse industries, earning a reputation for reliability and innovation. Still unsure? Work with us risk-free. We are so confident in the quality of our solutions that we offer a no-risk, money-back guarantee. If we don’t deliver as promised, we’ll refund your investment—no questions asked. Contact us today to learn more about our offerings and start your risk-free journey to discovering how we can help your business grow.Looking for work in Javascript DevelopmentLocated in London, United KingdomFrom €5,000 for Javascript DevelopmentWorked in Pets (+7)Speaks English51-200 membersEchoGlobal
5(2 reviews)★ Hire Top Remote Software Developers
Top awarded☂ ISO 27001 Certified Tech Talent Provider | ⚑ Eastern Europe & LATAM | ◉ Trusted by Fortune 500 Companies | ✔ 10+ Years of Experience | ✱ 1-Week Risk-Free TrialLooking for work in Javascript DevelopmentLocated in Greater London, United Kingdom (+4)From €10,000 for Javascript DevelopmentWorked in Software & Computer Services (+8)Speaks English, Estonian(+3)11-50 membersTimspark
5(3 reviews)Software development, engineering teams, AI/ML, data, cloud, and DevOps.
Top awardedTimspark is a software development company helping startups, SMBs, and enterprises build, scale, and modernize digital products and technology platforms. We provide custom software development, team augmentation, and dedicated engineering teams across web and mobile development, AI/ML, data engineering, cloud and DevOps, QA automation, and Salesforce. Our teams can integrate with an existing engineering organization or take responsibility for full-cycle product delivery, from discovery and architecture to development, testing, deployment, and ongoing support. Our experience includes microlearning and EdTech platforms, cybersecurity and vulnerability analytics, industrial IoT and real-time data processing, AI-powered point cloud and Scan-to-BIM solutions, pharmaceutical data platforms, and scalable web and mobile applications. Whether a client needs senior specialists to strengthen an existing team, a dedicated cross-functional engineering team, or end-to-end software development, Timspark provides the technical expertise and delivery flexibility to move projects forward efficiently. Services: Custom Software Development • Team Augmentation • Dedicated Engineering Teams • Web & Mobile Development • AI/ML & Data Engineering • Cloud & DevOps • Salesforce • QA & Test AutomationLooking for work in Javascript DevelopmentLocated in London, United Kingdom (+1)From €3,000 for Javascript DevelopmentWorked in Media (+15)Speaks English, Armenian(+6)51-200 membersSENLA | Software Engineering Laboratory
5(2 reviews)Scale your engineering teams with SENLA
Top awardedSENLA is a leading Talent Augmentation provider in Europe, offering access to over 700 highly skilled tech professionals . Trusted by global leaders such as BOSCH, IKEA, Bayer, and Deloitte, we specialize in enhancing tech teams with top-tier engineers, architects, and data scientists. Our proven talent system guarantees 95% client satisfaction and a 94% staff retention rate . With flexible options including individual experts, dedicated teams, or development centers, we can launch new teams in as little as 10 days . Since 2012, we’ve delivered over 350 successful projects across a wide range of industries. Our approach focuses on: Rapid access to pre-vetted tech talent; Building tailored teams that fit your unique requirements; Effortless integration with your workflows; Reliable ongoing support and quality assurance. Ready to transform your tech capabilities? Partner with SENLA and discover the unmatched value of expert Talent Augmentation.2 works in Javascript DevelopmentLocated in Greater London, United Kingdom (+1)From €10,000 for Javascript DevelopmentWorked in Software & Computer Services (+16)Speaks English, German(+1)501-1000 membersBird Marketing
5(19 reviews)Digital Mastery, Delivered by Bird 🏆
RecommendedTop awardedBird, a globally acclaimed, multi-award-winning digital marketing agency, with prestigious offices in London, New York, and Dubai. Renowned for our exceptional expertise in the realms of Digital Marketing , we specialize in delivering cutting-edge web design , search engine optimization (SEO) , pay-per-click (PPC) advertising, and social media management . Services Web Design: Crafting bespoke, visually stunning, and user-friendly websites that resonate with your brand's identity. SEO: Implementing cutting-edge strategies to boost your online visibility, drive traffic, and ensure long-term growth. Digital Marketing: A comprehensive suite of services including PPC, Social Media Marketing, and Email Campaigns, tailored to maximize your digital impact. E-Commerce Solutions: Integrating innovative technologies to create seamless, high-converting online stores. Branding & Creative Services: Building unique brand identities that stand out in today’s competitive market. Why Choose Bird Marketing? Award-Winning Excellence: Recognized globally for our innovative solutions and results-driven approach. Expert Team: A blend of seasoned professionals from various corners of the globe, bringing diverse insights and skills. Proven Results: A track record of elevating businesses to new heights with our tailored strategies. Bird Marketing: Your Partner for Digital Excellence Connect with us to explore how we can elevate your digital presence and drive your business forward.Looking for work in Javascript DevelopmentLocated in Greater London, United Kingdom (+4)From €1,000 for Javascript DevelopmentWorked in Insurance (+24)Speaks English11-50 membersHalo Lab
5(12 reviews)Transforming your product idea into reality through custom design-driven development.
Highly recommendedTop awardedHalo Lab is an award-winning custom web app design and development company ⭐ Our team offers reliable, customized, and user-friendly solutions for your business. We transform your product ideas into reality with our expert, design-driven development approach. Let us bring your vision to life with our innovative and tailored services. WE ARE YOUR PARTNER IN: ✅ Enhancing user experiences with UI/UX design. ✅ Building your brand identity. ✅ Growing your online presence with website development. ✅ Creating smooth digital experiences with full-cycle web app development. ✅ Ensuring top-notch quality with QA. ✅ Boosting growth and visibility with SEO & marketing support. Let’s create your star with us.Looking for work in Javascript DevelopmentLocated in Morecambe, United Kingdom (+4)From €10,000 for Javascript DevelopmentWorked in Transportation (+18)Speaks English51-200 membersClickaByte
5(1 review)Fast websites & bespoke software that ship outcomes, not just code.
ClickaByte is a small, hands-on web and software studio based near Sevenoaks, working with clients across Kent, the UK and worldwide. We design and build fast, responsive websites, web apps, and mobile experiences that look sharp and feel effortless to use. Alongside websites and apps, we develop custom software and integrations tailored to each client - from internal tools and dashboards to full platforms, automations and AI-powered features such as chatbots and smart search. Our work spans fully bespoke and fully hand coded websites, WordPress sites (with custom built themes and plugins), and custom builds (React/Next.js, Python, Swift and more), always with clean architecture, security and performance in mind. Every project starts with a focused kickoff to understand your goals, constraints and budget. We then move quickly into prototypes and demo links so you can see real progress early, followed by iterative development with clear timelines and a single point of contact. Launch isn’t the end: we also provide hosting, monitoring, SEO and ongoing support to keep your site or product fast, reliable and evolving with your business.Looking for work in Javascript DevelopmentLocated in Orpington, United KingdomFrom €999 for Javascript DevelopmentWorked in Software & Computer Services (+2)Speaks English1-10 membersOreon Information Technology
5(1 review)Empowering Businesses with Cloud Innovation, DevOps Excellence, and Tailor-Made Software Solutions.
We’re a London-based software development, DevOps, and cloud consultancy agency committed to delivering innovative, reliable, and tailor-made technology solutions. At Oreon Information Technology, our talented software engineers, DevOps experts, and IT specialists work closely with clients to understand their unique needs and bring their visions to life. By combining software development, cloud consultancy, and IT services, we help businesses build robust, scalable, and sustainable solutions using the latest technologies and industry best practices. With over a decade of collective experience, Oreon Technology has established itself as a trusted partner for businesses seeking digital transformation and cloud adoption. Our dedicated professionals consistently deliver high-quality results, driving innovation, efficiency, and growth for clients across diverse industries, from startups to large enterprises. We provide a full spectrum of services, including: Custom software and web application development DevOps strategy and implementation Cloud architecture design, migration, and optimisation Cloud-native solutions and container orchestration (Kubernetes, Docker) Performance monitoring, observability, and security consulting Ongoing managed services and support We are proud to partner with IBM (Silver Partner), Google, DigitalOcean, New Relic, Datadog, Splunk, and SUSE, giving our clients access to cutting-edge tools, secure infrastructure, and optimised performance. Discover how Oreon Information Technology can empower your business with exceptional technology solutions, cloud consultancy, and personalised support from day one.Looking for work in Javascript DevelopmentLocated in Greater London, United KingdomFrom €1,000 for Javascript DevelopmentWorked in Software & Computer ServicesSpeaks English51-200 membersAltus Web Solutions
(0 review)Elevating your digital presence
We design and develop high-performance, custom websites tailored to drive business growth. Our collaborative methodology begins with a deep-dive discovery phase to align on your goals, followed by strategic UI/UX design, robust front-end development, and rigorous testing. Clients can expect a transparent, milestone-driven process, exceptional communication, and a fully optimized, scalable digital product delivered on time.Looking for work in Javascript DevelopmentLocated in London, United KingdomFrom €3,000 for Javascript DevelopmentWorks in multiple industriesSpeaks English1-10 membersPagepro
5(6 reviews)Next.js, Expo & Sanity Development Agency
Top awardedWhat sets us apart in the world of technology agencies is our focused expertise. We are a narrow, highly experienced Next.js, Expo & Sanity agency. This specialization allows us to delve deep into these technologies, staying at the forefront of industry trends and innovations. When you choose us, you're investing in results and the deliverables that drive your business forward. We're aiming to deliver 2,000 Frictionless Sprints by 2030. Frictionless Development is the essence of everything we do. It means streamlining the entire development process to guarantee that it operates smoothly, efficiently, and effectively. It entails crafting an environment in which every aspect of your project, from its initial conception to its final deployment, is carefully planned, executed, and monitored to keep interruptions and setbacks to a minimum. Our awards: We're Clutch Top Sanity and Webflow Developer 2025 We're Clutch Top Next.js and React Native Developer 2024 We're named Forbes Diamond Poland 2024 Our Tech Stack: Next.js Expo Sanity React React Native Node.js TypeScript Headless CMSes Hire us for: App Development (Web and Mobile) Migration from Native Apps to React Native CMS Migrations MVP Development Further Existing App Development Technical Discovery (Technical feasibility) Post-Release Support React / React Native Code AuditLooking for work in Javascript DevelopmentLocated in Bialystok, PolandFrom €10,000 for Javascript DevelopmentWorked in Hospitals & Healthcare (+12)Speaks English, Polish11-50 membersINFINITE CONSULTANCY LTD
(0 review)Transforming Visions into Reality: Your Trusted Partner in Custom Software Solutions"
At 8-u.com, we're not just developers; we're dream builders. Since 2018, we've been pioneering bespoke software solutions that empower businesses to thrive in the digital age. With a team of highly skilled and innovative developers, we breathe life into your ideas, crafting tailor-made applications that exceed expectations and drive success. Our commitment to excellence is reflected in our track record of delivering cutting-edge solutions to a diverse range of clients across industries. From startups seeking to disrupt the market to established enterprises aiming to streamline operations, we've earned a reputation for reliability, efficiency, and unwavering dedication to our clients' goals. What sets us apart is our holistic approach to development. We don't just write code; we immerse ourselves in your vision, understanding your unique challenges and objectives to deliver solutions that are not just functional, but transformative. Whether it's web development, mobile applications, e-commerce platforms, or custom software, we leverage the latest technologies and best practices to create seamless experiences that captivate users and drive growth. At 8-u.com, client satisfaction is our top priority. We take pride in fostering long-term partnerships built on trust, transparency, and communication. When you choose us as your development partner, you're not just getting a service provider – you're gaining a dedicated team invested in your success every step of the way. Join the ranks of our satisfied clients and experience the difference that expertly crafted software can make for your business. Let's collaborate to turn your vision into reality.Looking for work in Javascript DevelopmentLocated in Greater London, United KingdomFrom €5,000 for Javascript DevelopmentWorks in multiple industriesSpeaks English11-50 membersZfort Group
(0 review)Your Project, Our Expertise
At Zfort Group, we specialize in empowering businesses with cutting-edge technology and innovative solutions. Our expertise spans multiple domains, including AI, Blockchain, Web Development, and Mobile Applications. Our services include: Custom AI Development Tailored AI solutions designed to meet your unique business challenges and opportunities. Advanced Machine Learning models and neural network solutions for predictive analytics, computer vision, and intelligent automation. Blockchain and NFT Marketplace Development Building secure, scalable blockchain ecosystems for decentralized applications. Creating NFT marketplaces with seamless transaction processing and smart contract integration. Web Development High-performance websites, from custom builds to WordPress-powered platforms, optimized for user experience and scalability. E-commerce solutions, including store creation, payment integration, and custom features for online retail. Mobile App Development Intuitive, feature-rich mobile applications tailored to your audience. Expertise in fitness apps, e-commerce apps, and AI-enhanced mobile solutions. Business and Marketing Technology AI-driven marketing strategies for precise targeting and engagement. Automation solutions for streamlining operations and enhancing productivity. Comprehensive Digital Innovation Advanced AI consulting and development to revolutionize business processes. Blockchain-powered contracts and financial solutions for seamless, secure transactions. At Zfort Group, we blend expertise with innovation to deliver scalable, future-ready solutions that drive growth and keep your business at the forefront of the digital world.Looking for work in Javascript DevelopmentLocated in London, United Kingdom (+1)From €1,000 for Javascript DevelopmentWorks in multiple industriesSpeaks English201-500 membersTHEY.dev
5(1 review)Custom software Development, Design & Consulting
Who are THEY? Since our inception in 2017, we've grown into a remote team of experts, spanning from the UK to Poland. We specialize in delivering tailor-made web and mobile applications , with a keen focus on collaboration and direct client-developer interaction. Our key strength is a consultancy approach to every client. We've had the privilege of assisting a wide range of businesses, from young startups to well-established companies, helping them navigate the technological landscape and achieve their goals. Our success lies in our ability to match each project's unique requirements with the right expertise. THEYr areas of expertise Design & Discovery Transforming software concepts into clickable prototypes Proof of concept (POC) development Ensuring your unique project ideas are achievable Minimal Viable Product (MVP) development Cost-effective route to a live, functional application Custom software development Crafting tailored, scalable, production-ready software solutions Support & maintenance Ensuring smooth software operations, always How THEY work At THEY, we adopt a practical and flexible approach to project execution. Each journey begins with an understanding of our client's vision and thorough validation of their ideas. Embracing a transparent and responsive workflow, we consistently deliver solutions in short, result-oriented cycles. Quality assurance is integral to our process, with exhaustive testing at each stage ensuring every solution adheres to top-tier standards. We prioritise open communication and regularly share project updates. This enables us to synchronize seamlessly with our clients' objectives, delivering solutions that truly resonate with their needs. Ultimately, our aim is not just project completion, but the creation of enduring relationships with our clients.Looking for work in Javascript DevelopmentLocated in Kraków, PolandFrom €1,000 for Javascript DevelopmentWorked in Travel & Leisure (+7)Speaks English, Polish(+1)11-50 membersMMC Global
4.6(12 reviews)Best Software Development Company
RecommendedMMC Global is an award-winning business solutions provider that serves organizations across different industry verticals around the globe. We helps organizations streamline business operations and compete in the global marketplace by focusing on a range of cutting-edge technologies: Artificial Intelligence Solutions Chatbot Development Product Strategy Design UX/UI Mobile application development Web application and website Development Security Consultant, DevOps Data Science Digital Marketing We believe that technical execution should not be a barrier to developing new projects, which is why we work closely with our customers to understand their vision, help them define their product, then design, build and launch it in the most efficient way possible. We have already developed application, mobile application and different solutions for Startups, Small Medium Enterprise (SME) and enterprises, streaming web applications, erp applications, MVPs, business process automation systems, e-commerce sites and many others. For a transformative digital journey, reach out to us at [email protected] to discuss your project!Looking for work in Javascript DevelopmentLocated in Dubai, United Arab Emirates (+2)From €1,000 for Javascript DevelopmentWorked in Non-profit (+4)Speaks English, Arabic(+1)501-1000 membersInnowise
5(29 reviews)Let's develop software together!
Top awardedInnowise is a global software engineering and custom development company founded in 2007. With over 3,500 vetted engineers, we help enterprises and startups deliver digital products faster, manage engineering costs, and scale efficiently. We operate across North America, DACH, the UK, the Nordics, and the Middle East, with regional business development teams that understand local market needs, business cultures, and regulatory requirements. We specialize in delivering solutions for finance, banking and insurance, healthcare, eCommerce and retail, manufacturing, logistics and transportation, tourism, education, and media and entertainment. Our clients remain with us long-term, with 93 percent continuing to partner with us for more than 12 months. Our services include IT staff augmentation, dedicated development teams, custom software development, cloud and DevOps engineering, web and mobile app development, AI and data solutions, cybersecurity, and QA automation. Our engineers work with technologies such as React, Angular, Vue, .NET, Node.js, Java, Python, Go, PHP, Flutter, Swift, Kotlin, and cloud platforms including AWS, Microsoft Azure, and Google Cloud. Thanks to our large internal talent pool, we typically match clients with the right engineers or full agile teams within 3 to 5 business days, which accelerates project initiation and reduces time-to-market. We have completed over 1,600 projects for clients in more than 40 countries, maintaining an average rating of 4.9 out of 5 on Clutch. To ensure high-quality delivery, we use structured onboarding, internal mentorship, and maintain competence centers focused on architecture, code quality, and delivery KPIs. Innowise holds ISO 9001, ISO 13485, ISO 27001, ISO 27017, and ISO 27018 certifications and is fully compliant with SOC 2, HIPAA, PCI DSS, and GDPR. We are official partners of AWS, Microsoft, SAP, Databricks, Odoo, InterSystems, UiPath, and other leading technology vendors.Looking for work in Javascript DevelopmentLocated in Frankfurt, Germany (+4)From €10,000 for Javascript DevelopmentWorked in Software & Computer Services (+7)Speaks English, Dutch(+6)1001-5000 membersNEVERBLAND
5(1 review)London’s pioneering Digital Product Agency, building amazing digital business solutions.
We believe that technology has the power to shape a better world. Which is why we harness our expertise and experience to collaborate with partners who make a positive impact on both people and the planet. Over the last decade, progressive companies have entrusted our multidisciplinary team to build digital products that help solve (some of) our most pressing problems. Yes, it’s a bold claim, but it’s one we stand by. It’s a claim that’s been proven by businesses redefining their sectors for good, such as Bulb, Lick, Feast-It, MyTrees and TogetherAll. Our core services are unapologetically in-house. Allowing our tight-knit project teams to do what they do best efficiently. To build meaningful digital products that make a difference.Looking for work in Javascript DevelopmentLocated in London, United KingdomBudget on requestWorked in EducationSpeaks English11-50 members