Senior Fullstack Developer

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 Joboko 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
8+ years of software development experience, with strong hands-on TypeScript and [protected info]
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 [protected info] 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
Why you'll love working here? 🏆 Join Vietnam's Best IT Company - Gradion Vietnam (formerly NFQ Vietnam) was recognized by Joboko 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
Working time: Monday -
Friday (9 AM - 6 PM)
Location: Podium Floor, Sapphire 2 tower, 92 Nguyen Huu Canh Street, Thanh My Tay Ward, Ho Chi Minh City, Vietnam.
According to General Data Protection Regulation (GDPR), Singapore's Personal Data Protection Act (PDPA), and Vietnam's Decree 13/2023/ND-CP, while also ensuring compliance with other applicable local data protection laws in the jurisdictions where we operate, including but not limited to Vietnam, Thailand, Egypt, Singapore, Germany, and Saudi Arabia, Gradion applies the "Personal Data Protection Policy" to all candidates to ensure compliance with the laws.
By submitting your application to Gradion, you agree to allow us to process your provided information in accordance with the Personal Data Protection Policy that you have carefully read, understood, and agreed to in its entirety at Link.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.