Senior Fullstack Developer, English

GRADION

full-time

Posted on: 10/13/2025

Location Type: Hybrid

Location: Ho Chi Minh City • 🇻🇳 Vietnam

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Job Level

Senior

Tech Stack

JavaScriptNode.jsReactSCSSTypeScriptVue.js

About the role

We are looking for a Senior Fullstack Developer to join our team and play a key role in building and optimizing high-performing e-commerce solutions for scaling businesses.
Frontend Development: Implement UI/UX improvements with a mobile-first approach (90% mobile traffic).
Manage multi-currency & multi-language Shopify storefronts (Shopify Translate App, Localize).
Develop new features to enhance store performance and user experience.
Optimize the subscription model UX (reduce clicks, improve conversion rates).
Conduct A/B testing & tracking to refine user interactions.
Enhance the Shopify Admin interface for a smoother backend experience.
Backend Development: Maintain & update payment gateway integrations (Apple Pay, Google Pay, Credit Card, PayPal, Stripe, Klarna, etc.).
Develop Klarna payment integration, including monitoring & logging error webhooks.
Maintain & improve Recharge subscription tracking, including API updates and webhook event logging.
Implement robust monitoring & error tracking for better system stability.

Requirements

From 4 years of experience developing with Shopify or similar e-commerce platforms.
Strong proficiency in Liquid or similar template engine, HTML5, CSS3, SASS, JavaScript (React/Vue is a plus).
Experience with backend development using Nodejs/Typescript.
Experience with A/B testing, tracking tools, and performance optimization.
Knowledge of multi-currency & multilingual setups for storefronts.
Familiarity with Git, CI/CD pipelines, and agile workflows.
Deep understanding of cross-browser/platform issues and code solutions.
Experience with Shopify Functions, Shopify APIs and Shopify Checkout UI Extensions is a big bonus.

Benefits

🏆 Join Vietnam’s Best IT Company – Gradion Vietnam (formerly NFQ Vietnam) was recognized by ITViec for 7 consecutive years, including 2 successive years as the Winner. Work with some of the best minds in the industry and be part of a company that’s redefining how businesses scale through technology.
🌍 Career Growth & Tech Leadership – At Gradion, you’re not just coding or delivering features—you’re shaping innovative solutions. Collaborate closely with tech leads, gain hands-on exposure to critical product and business decisions, and receive mentorship from experts who’ve built scalable systems. Whether you aim to become a technical expert or a leader, we’ll empower your journey.
🚀AI-First Engineering & Strategic Consulting – Our engineering culture integrates AI as a core driver of design, development, and optimization—not an add-on. As a forward-thinking consultancy, we go beyond traditional engineering, combining technical excellence with a strategic mindset to deliver transformative solutions for ambitious businesses.
💰 Competitive Compensation – We believe great talent deserves great rewards. Expect an attractive salary, performance-based bonuses, and a benefits package that reflects your impact. We value talent over salary budgets—exceptional contributions deserve exceptional rewards.
✨ And Many More Benefits to Explore! But most importantly, a healthy work-life balance and an environment where you can thrive—professionally and personally. Including:
- A laptop is provided.
- Community Tech activities.
- A fun & dynamic environment and freedom to be creative.
- Modern office with a flexible, relaxing zone.
- Performance bonus (up to 2-month salary).
- Performance review 2 times/ year.
- Extra Premium Healthcare & Annual Health-check.
- 15 days of annual leave.
- **Working time: **Monday – Friday (9 AM - 6 PM)