Senior Fullstack Developer (Nextjs, Nodejs, AWS)

• 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

• 8+ years of software development experience, with strong hands-on TypeScript and Node.js

• Deep JavaScript fundamentals - async execution order, what your framework actually does under the hood.

• Strong general fundamentals of modern web applications - how apps render in the browser, rendering strategies, how to make the customer experience smooth and fast, and how frontend, backend, and multiple systems communicate — especially in a global e-commerce context

• Production experience in React or Vue (and Next.js or Nuxt) - depth in one matters more than shallow exposure to both; you should be able to explain what your framework does under the hood

• Familiarity with AWS - you can reason about how an application is deployed and served (compute, CDN, storage, secrets); experience on another cloud and mapping the concepts across is just as good

• Daily, hands-on use of Git, CI/CD pipelines, and agile workflows.

• Be the driver, not a passive coder - you propose solutions, sketch the architecture, and challenge requirements that don't make sense.

• Strong written and spoken English - the role involves daily collaboration with international stakeholders; clear, structured, to-the-point communication in technical discussions and async writing

• Active engagement in team ceremonies and confident contribution to technical discussions

• Willingness and ability to learn the Shopify ecosystem - you don't need Shopify experience on day one, but you must be genuinely curious and motivated to build it

Nice to have

• Shopify Functions, Shopify APIs, or Checkout UI Extensions experience

• End-to-end testing exposure (Playwright, Cypress)

• A/B testing and analytics/tracking tools

• Multi-currency / multilingual storefront setups

• Payment gateway integration experience

• Deep cross-browser and cross-platform troubleshooting

🏆 Join Vietnam’s Best IT Company - Gradion Vietnam (formerly NFQ Vietnam) was recognized by ITViec for 8 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 & Leadership Development - Work closely with our leadership team, gain mentorship from experienced executives, and have direct exposure to high-level strategic decisions. Your growth is limitless, as long as you’re ready to step up, opportunities will always be there for you.

🚀 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:

• Performance bonus of up to 2 months’ salary.
• Performance review twice a year, so your growth is recognized and rewarded.
• Premium healthcare for you, plus an annual health check.
• 15 days of annual leave.
• Full salary during probation.
• Hybrid working for real flexibility.
• Monthly Happy Hour and Community Tech activities.
• Work on global projects as part of an innovation team that shapes ideas for the hi-tech world.
• Diverse training programs to keep you growing.