Senior / Lead Fullstack Engineer (Node.js, React.js/Vue.js)

About UsAt 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 & FIGURES23+ years of expertise - Gradion builds digital platforms & deep-tech solutions3 continents: Asia, Europe and Africa300+ specialists across 7 countries Vietnam, Singapore, Thailand, Saudi Arabia, Germany, Egypt, Indonesia100+ 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 27001About The RoleWe are looking for a Senior or Lead Fullstack Engineer to take full ownership of end-to-end product engineering across backend and frontend layers. You will work embedded in product teams serving European clients across e-commerce and B2B SaaS - collaborating directly with client engineers, product owners, and stakeholders. This is a hands-on role with real leadership scope: you will shape how we build, drive technical direction, and raise the engineering bar across the team.What You Will Do:Design, develop, and optimize high-performance backend services and RESTful / GraphQL APIs using Node.jsBuild and maintain scalable, reusable frontend components using Vue.js, ensuring high responsiveness and seamless user experiencesArchitect end-to-end technical solutions covering both server-side and client-side layers, with a clear focus on scalability and long-term maintainabilityWork with relational and NoSQL databases (PostgreSQL, MySQL, MongoDB) to ensure efficient data modeling, indexing, and query performanceImplement state management patterns (Vuex / Pinia) and apply frontend performance optimization strategiesLead code reviews, enforce engineering standards, and grow the technical capability of junior and mid-level engineers on the teamIdentify and address technical debt proactively - propose and drive architectural improvements across the codebaseCollaborate with product managers, designers, and client stakeholders to translate business requirements into robust, scalable technical solutionsImplement caching, logging, monitoring, and security best practices including OWASP Top 10 complianceWhat Will You Bring:7+ years of experience in fullstack development, with strong hands-on depth in both Node.js (backend) and Vue.js or React (frontend)Strong proficiency in JavaScript and TypeScript, including asynchronous programming patternsProfessional English proficiency - you are comfortable leading technical discussions, writing documentation, and communicating directly with international clients in EnglishSolid understanding of database architecture, query optimization, and data modeling across relational and NoSQL systems (PostgreSQL, MySQL, MongoDB)Proven experience designing and integrating RESTful and GraphQL APIsComfortable working with Git, CI/CD pipelines, and modern deployment workflowsStrong debugging, performance tuning, and problem-solving skills across the full stackDemonstrated ability to lead technical decisions, drive architectural discussions, and elevate the engineers around youNice-to-HaveExperience with cloud platforms (AWS, GCP, or Azure) and containerization using Docker and KubernetesFamiliarity with asynchronous processing and message queues (RabbitMQ, Kafka)Knowledge of server-side rendering or static site generation (Next.js, Nuxt.js)Experience with testing frameworks such as Jest, Cypress, or PlaywrightWhy You'll Love Working Here🏆 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 Opportunities - 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 Innovation & 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’ salaryPerformance review twice a year, so your growth is recognized and rewardedPremium healthcare for you, plus an annual health check15 days of annual leaveFull salary during probationHybrid working for real flexibilityMonthly Happy Hour and Community Tech activitiesWork on global projects as part of an innovation team that shapes ideas for the hi-tech worldDiverse training programs to keep you growingWorking Time & LocationWorking time: Monday - Friday (9 AM - 6 PM)Location:Ho Chi Minh office: Podium Floor, Sapphire 2 tower, 92 Nguyen Huu Canh Street, Thanh My Tay Ward, Ho Chi Minh City, VietnamDa Nang office: 23rd Floor, G8 Golden Building, 65 Hai Phong, Hai Chau Ward, Da Nang City, VietnamRemote Work: Candidates based in Hanoi or Can Tho are welcome to work remotelyAccording 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.