Error message
Warning: Undefined array key "title" in Drupal\jango_shortcodes\Plugin\Shortcode\TestimonialsContainerShortcode->process() (line 40 of modules/custom/jango_shortcodes/src/Plugin/Shortcode/TestimonialsContainerShortcode.php).
Drupal\jango_shortcodes\Plugin\Shortcode\TestimonialsContainerShortcode->process() (Line: 426)
Drupal\shortcode\ShortcodeService->processTag() (Line: 306)
Drupal\shortcode\ShortcodeService->process() (Line: 117)
Drupal\shortcode\Plugin\Filter\Shortcode->process() (Line: 123)
Drupal\filter\Element\ProcessedText::preRenderText()
call_user_func_array() (Line: 113)
Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 886)
Drupal\Core\Render\Renderer->doCallback() (Line: 431)
Drupal\Core\Render\Renderer->doRender() (Line: 248)
Drupal\Core\Render\Renderer->render() (Line: 484)
Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 89)
__TwigTemplate_a4d244b24a1aff6acaa5b68663179efc->doDisplay() (Line: 388)
Twig\Template->yield() (Line: 344)
Twig\Template->display() (Line: 359)
Twig\Template->render() (Line: 51)
Twig\TemplateWrapper->render() (Line: 33)
twig_render_template() (Line: 348)
Drupal\Core\Theme\ThemeManager->render() (Line: 490)
Drupal\Core\Render\Renderer->doRender() (Line: 503)
Drupal\Core\Render\Renderer->doRender() (Line: 248)
Drupal\Core\Render\Renderer->render() (Line: 484)
Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 86)
__TwigTemplate_1a8cef508bec2cd5cc56fc883e066384->block_content() (Line: 432)
Twig\Template->yieldBlock() (Line: 69)
__TwigTemplate_1a8cef508bec2cd5cc56fc883e066384->doDisplay() (Line: 388)
Twig\Template->yield() (Line: 344)
Twig\Template->display() (Line: 359)
Twig\Template->render() (Line: 51)
Twig\TemplateWrapper->render() (Line: 33)
twig_render_template() (Line: 348)
Drupal\Core\Theme\ThemeManager->render() (Line: 490)
Drupal\Core\Render\Renderer->doRender() (Line: 248)
Drupal\Core\Render\Renderer->render() (Line: 165)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 637)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 164)
Drupal\Core\Render\Renderer->renderInIsolation() (Line: 191)
Drupal\Core\Render\Renderer->doRenderPlaceholder() (Line: 739)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}()
Fiber->start() (Line: 747)
Drupal\Core\Render\Renderer->replacePlaceholders() (Line: 607)
Drupal\Core\Render\Renderer->doRender() (Line: 248)
Drupal\Core\Render\Renderer->render() (Line: 165)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 637)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 164)
Drupal\Core\Render\Renderer->renderInIsolation() (Line: 62)
Drupal\text\TextProcessed->getValue() (Line: 154)
Drupal\Core\Field\FieldItemBase->__get() (Line: 143)
node_tokens()
call_user_func_array() (Line: 416)
Drupal\Core\Extension\ModuleHandler->Drupal\Core\Extension\{closure}() (Line: 395)
Drupal\Core\Extension\ModuleHandler->invokeAllWith() (Line: 415)
Drupal\Core\Extension\ModuleHandler->invokeAll() (Line: 364)
Drupal\Core\Utility\Token->generate() (Line: 241)
Drupal\Core\Utility\Token->doReplace() (Line: 191)
Drupal\Core\Utility\Token->replace() (Line: 66)
Drupal\metatag\MetatagToken->replace() (Line: 791)
Drupal\metatag\MetatagManager->processTagValue() (Line: 634)
Drupal\metatag\MetatagManager->generateRawElements() (Line: 573)
Drupal\metatag\MetatagManager->generateElements() (Line: 510)
metatag_get_tags_from_route() (Line: 137)
metatag_page_attachments() (Line: 311)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 395)
Drupal\Core\Extension\ModuleHandler->invokeAllWith() (Line: 308)
Drupal\Core\Render\MainContent\HtmlRenderer->invokePageAttachmentHooks() (Line: 285)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 637)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 284)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare() (Line: 128)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
call_user_func() (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 201)
Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138)
Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 206)
Drupal\cleantalk\EventSubscriber\BootSubscriber->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
Drupal\Core\DrupalKernel->handle() (Line: 19)
Warning: Undefined array key "title" in Drupal\jango_shortcodes\Plugin\Shortcode\TestimonialsContainerShortcode->process() (line 40 of modules/custom/jango_shortcodes/src/Plugin/Shortcode/TestimonialsContainerShortcode.php).
Drupal\jango_shortcodes\Plugin\Shortcode\TestimonialsContainerShortcode->process() (Line: 426)
Drupal\shortcode\ShortcodeService->processTag() (Line: 306)
Drupal\shortcode\ShortcodeService->process() (Line: 117)
Drupal\shortcode\Plugin\Filter\Shortcode->process() (Line: 123)
Drupal\filter\Element\ProcessedText::preRenderText()
call_user_func_array() (Line: 113)
Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 886)
Drupal\Core\Render\Renderer->doCallback() (Line: 431)
Drupal\Core\Render\Renderer->doRender() (Line: 248)
Drupal\Core\Render\Renderer->render() (Line: 484)
Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 89)
__TwigTemplate_a4d244b24a1aff6acaa5b68663179efc->doDisplay() (Line: 388)
Twig\Template->yield() (Line: 344)
Twig\Template->display() (Line: 359)
Twig\Template->render() (Line: 51)
Twig\TemplateWrapper->render() (Line: 33)
twig_render_template() (Line: 348)
Drupal\Core\Theme\ThemeManager->render() (Line: 490)
Drupal\Core\Render\Renderer->doRender() (Line: 503)
Drupal\Core\Render\Renderer->doRender() (Line: 248)
Drupal\Core\Render\Renderer->render() (Line: 484)
Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 86)
__TwigTemplate_1a8cef508bec2cd5cc56fc883e066384->block_content() (Line: 432)
Twig\Template->yieldBlock() (Line: 69)
__TwigTemplate_1a8cef508bec2cd5cc56fc883e066384->doDisplay() (Line: 388)
Twig\Template->yield() (Line: 344)
Twig\Template->display() (Line: 359)
Twig\Template->render() (Line: 51)
Twig\TemplateWrapper->render() (Line: 33)
twig_render_template() (Line: 348)
Drupal\Core\Theme\ThemeManager->render() (Line: 490)
Drupal\Core\Render\Renderer->doRender() (Line: 248)
Drupal\Core\Render\Renderer->render() (Line: 165)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 637)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 164)
Drupal\Core\Render\Renderer->renderInIsolation() (Line: 191)
Drupal\Core\Render\Renderer->doRenderPlaceholder() (Line: 739)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}()
Fiber->start() (Line: 747)
Drupal\Core\Render\Renderer->replacePlaceholders() (Line: 607)
Drupal\Core\Render\Renderer->doRender() (Line: 248)
Drupal\Core\Render\Renderer->render() (Line: 153)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 637)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 152)
Drupal\Core\Render\Renderer->renderRoot() (Line: 288)
Drupal\Core\Render\HtmlResponseAttachmentsProcessor->renderPlaceholders() (Line: 137)
Drupal\Core\Render\HtmlResponseAttachmentsProcessor->processAttachments() (Line: 45)
Drupal\Core\EventSubscriber\HtmlResponseSubscriber->onRespond()
call_user_func() (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 214)
Symfony\Component\HttpKernel\HttpKernel->filterResponse() (Line: 202)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 201)
Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138)
Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 206)
Drupal\cleantalk\EventSubscriber\BootSubscriber->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
Drupal\Core\DrupalKernel->handle() (Line: 19)
What can you build using JavaScript?

Web & mobile apps
Deliver fast, responsive experiences across platforms. JavaScript supports consistent interfaces and reusable
logic.
Web servers
Power event-driven servers that manage high traffic efficiently. Use JavaScript across the full stack to streamline development.
APIs
Create fast, scalable APIs that connect systems. JavaScript supports maintainable, extensible services.
Data visualization software
Build interactive dashboards for complex data. JavaScript enables real-time responsiveness and custom visuals.
Serverless apps
Run backend logic without managing infrastructure. JavaScript supports fast deployment and strong cloud compatibility.
Our Services
Web app development
We can build reliable, scalable web applications using modern JavaScript frameworks. Our team focuses on clean, efficient code that keeps your product stable as it evolves and easy to maintain over time.
Mobile app development
We can use JavaScript and frameworks like React Native to bring your product to mobile with a shared codebase. This approach gives you consistent performance and design across devices, without rebuilding from scratch.
API development
We can develop robust backend services with Node.js, a JavaScript runtime built for speed and scalability. From syncing data to powering integrations, we ensure everything stays fast and connected.
UI/UX development
We can use JavaScript libraries and tools to bring your designs to life with fast, polished interfaces. Our work stays true to your visuals while optimizing responsiveness and performance in the browser.
Enterprise app development
We can build high-performance, enterprise-grade applications using JavaScript for both frontend and backend layers. Whether internal tools or client-facing platforms, we prioritize speed, usability, and long-term stability.
Custom data visualization
We can use JavaScript libraries like D3.js and Chart.js to build bespoke dashboards that turn data into clear insights. These tools help teams spot trends, track KPIs, and confidently make decisions.
Elevate your projects with our expert JavaScript services
The AssureSoft advantage
19+
years of expertise
building lasting partnerships
1800+
projects delivered
with businesses of all sizes
500+
Software Engineers
distributed across Latin America
73
NPS score
reflecting how 80% of clients rate us 9 or 10
Looking for JavaScript development services? We’re the company to call
Why choose AssureSoft?
Time-zone alignment
Our teams share working hours with the U.S., making communication faster and more efficient than offshore options.
Cultural compatibility
We understand U.S. business practices and workplace norms, which helps projects move smoothly and reduces friction in day-to-day collaboration.
Access to a vast talent pool
We tap into talent from all over Latin America, enabling us to find the right fit for any position you need.
JavaScript expertise that works your way
Your project, our proven process
From discovery to delivery, we ensure clear communication
and seamless execution at every stage.
Engagement
Search
Interviews
Onboarding
& Support
JavaScript-powered expertise: our toolkit
React
Vue.js
Angular
Ember.js
Preact
Svelte
Aurelia
Polymer
Backbone.js
Mithril
Riot.js
Meteor
Next.js
Nest.js
Node.js
Nuxt.js
SolidJS
Qwik
Lit
Fresh
React
Vue.js
React
Vue.js
Angular
Ember.js
Preact
Svelte
Aurelia
Polymer
Backbone.js
Mithril
Riot.js
Meteor
Next.js
Nest.js
Node.js
Nuxt.js
SolidJS
Qwik
Lit
Fresh
React
Vue.js
Express.js
jQuery
Stimulus
Alpine.js
Redux
Vuex
MobX
Apollo Client
Jest
Mocha
Cypress
QUnit
Jasmine
ESLint
Webpack
Rollup
Parcel
Prettier
Vite
Redux Toolkit
Testing Library
MobX
Express.js
jQuery
Stimulus
Alpine.js
Redux
Vuex
MobX
Apollo Client
Jest
Mocha
Cypress
QUnit
Jasmine
ESLint
Webpack
Rollup
Parcel
Prettier
Vite
Redux Toolkit
Testing Library
MobX
Babel
D3.js
TensorFlow.js
Visual Studio
Atom
AWS
Google Cloud Platform
Microsoft Azure
MySQL
MongoDB
PostgreSQL
Redis
Supabase
Firebase
Netlify
Vercel
React
Vue.js
Angular
Ember.js
Sublime Text
Babel
D3.js
TensorFlow.js
Visual Studio
Atom
AWS
Google Cloud Platform
Microsoft Azure
MySQL
MongoDB
PostgreSQL
Redis
Supabase
Firebase
Netlify
Vercel
React
Vue.js
Angular
Ember.js
Sublime Text
Why we trust JavaScript
I like working with JavaScript because it never puts walls around what I can build. It’s fast to get ideas moving, and even after years of writing it, I still find new ways to solve problems cleanly. The ecosystem is wild, but in a good way—it keeps things fresh and creative.
Francisco R.
Full-Stack developer
Frequently Asked Questions
Nearshore JavaScript development offers a potent mix of technical capability and operational ease. By working with developers in nearby time zones, your team benefits from real-time collaboration and faster turnaround times—all while tapping into top-tier JavaScript expertise without the overhead of local hiring.
Yes. Whether you need help for a few months or a long-term partner, we offer flexible options so you can hire JavaScript developers based on your timeline and goals.
Our JavaScript developers are based across Latin America, which means we’re available during your business hours. That makes communication and collaboration faster and smoother.
Absolutely. JavaScript front-end development powers your user interface, while JavaScript full-stack development lets you handle backend logic using the same language across your entire app.
Yes, we have deep experience in upgrading outdated systems by refactoring legacy codebases, introducing modern JavaScript frameworks, and improving performance without disrupting your core business. Whether it’s UI enhancement or full-stack transformation, we tailor modernization efforts to your goals.
Our JavaScript developers follow clean code practices, review each other’s work, and test thoroughly before anything ships. You get maintainable code and fewer surprises down the line.
Our onboarding process is built for speed and precision. Once we align on your project scope, we can match you with qualified JavaScript developers—often within days. We handle all vetting and logistics so your team gets immediate support without losing momentum.
At AssureSoft, we take data protection seriously. We’re ISO 27001 certified, which means we follow strict international standards for information security. From secure development environments to signed NDAs and access controls, we make sure your code, data, and IP are safe at every step.
Nearshore JavaScript
development services
are a call away