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gradion

Posted 14 days ago

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Senior Fullstack Developer

Ho Chi Minh CityOn-siteFull-time

AI Summary

Senior Fullstack Developer to build, optimize, and scale high-performing e-commerce experiences across Shopify storefronts, back-end integrations, and payment systems, with a global reach and a mobile-first focus.

About this role

ABOUT US:
At Gradion, we are the strategic partner for ambitious businesses, helping them achieve breakthrough growth through Digital Innovation and Deep Tech.
With a global vision and an AI-first approach, we enable clients to reshape strategies, optimize systems, and adopt cutting-edge technologies to create sustainable value.
From AI and data to cybersecurity, robotics, and large-scale enterprise platforms, Gradion designs practical solutions that lay the foundation for the next generation of billion-dollar companies.
OUR FACTS & FIGURES:
  • 23+ years of expertise - Gradion builds digital platforms & deep-tech solutions.
  • 3 continents: Asia, Europe and Africa.
  • 300+ specialists across 6 countries Vietnam, Singapore, Thailand, Saudi Arabia, Germany and Egypt.
  • 100+ enterprise clients, including several unicorns (e.g., Alaiko, HomeToGo, Roadsurfer).
  • Vietnam’s Best IT Company – recognized by ITViec for 8 consecutive years, including 2 consecutive years of ranking #1 (2024 and 2025).
  • ISO 27001.

We're looking for a Senior Fullstack Developer to join our team and take ownership of building, optimizing, and scaling high-performing e-commerce experiences. You'll work across the full stack - from Shopify storefront UX to backend integrations and payment systems - with a direct impact on conversion, reliability, and global reach.

In this role, you will

  • Build and improve UI/UX across Shopify storefronts with a mobile-first approach, serving over 90% mobile traffic

  • Manage and scale multi-currency and multi-language storefront setups

  • Develop new features that improve store performance, subscription UX, and overall conversion rates

  • Run A/B tests and implement tracking to continuously refine user interactions

  • Maintain and extend payment gateway integrations (Apple Pay, Google Pay, PayPal, Stripe, Klarna, and more)

  • Own backend reliability through robust monitoring, error tracking, and webhook event logging

  • Enhance internal Shopify Admin tooling for a smoother operational experience

    • What you will bring

  • 5+ years of experience in software development, with strong hands-on skills in TypeScript, Node.js, React or Vue.js, plus familiarity with Liquid or similar templating engines, and working exposure to AWS

  • Strong fundamentals in how modern web applications work: browser rendering, frontend/backend communication, and delivering fast, smooth customer experiences - especially in a global e-commerce context

  • Experience with A/B testing, analytics/tracking tools, and frontend performance optimization

  • Knowledge of multi-currency and multilingual storefront setups

  • Familiarity with Git, CI/CD pipelines, and agile workflows

  • Deep understanding of cross-browser and cross-platform issues, with practical solutions

  • Very good English, both written and spoken

  • You actively engage in team ceremonies and contribute confidently to technical discussions

    • Nice-to-Have

  • Experience with Shopify Functions, Shopify APIs, or Shopify Checkout UI Extensions

    • Skills

    A/b TestingAgile WorkflowsAnalytics/tracking ToolsAWSBackend IntegrationsCI/CDError-trackingFrontend Performance OptimizationGitLiquidMonitoringMulti-currency StorefrontsMultilingual StorefrontsNode.jsPayment Gateways (Apple Pay, Google Pay, PayPal, Stripe, Klarna)ReactShopifyShopify Admin ToolingShopify Functions/APIs/Checkout UI Extensions (nice-to-have)TypeScriptVueJSWebhooks

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