Front-end Developer at SmartDev in Cầu Giấy, Hanoi, Vietnam

companyDescription SmartDev is a global software development and AI solutions company within the Verysell Group, headquarter in Swiss and having 2 major development centers in Hanoi and Da Nang. The company serves B2B clients across Media, Fintech, and Logistics in APAC, Europe, and North America. SmartDev combines renowned Swiss quality with the Vietnamese passion to provide excellence and value. SmartDev brings together smart people both internally and externally to create partnerships that push boundaries and challenge the status quo. The company is at a pivotal point in our journey: transitioning from a pure IT outsourcing provider to an AI-enabled solutions partner. We have over 200 talented employees working both on-site and hybrid at locations: Hanoi: Zodiac building, 19 Duy Tan Street, Dich Vong Hau ward, Cau Giay District, Hanoi Danang: 81 Quang Trung, Hai Chau 1 ward, Hai Chau District, Danang jobDescription Develop high-quality, responsive, and pixel-perfect user interfaces based on design specifications (Figma, Adobe XD, etc.) Build and maintain frontend components using modern HTML5, CSS3, and JavaScript Implement and enhance server-side rendered (SSR) or backend-driven UI Collaborate closely with backend engineers to integrate APIs and ensure seamless data rendering and dynamic content delivery Develop and customize WordPress themes, plugins, and CMS-driven solutions (including WooCommerce where applicable) Optimize web applications for maximum speed and performance (e.g., lazy loading, code splitting, asset optimization) Ensure cross-browser compatibility and responsiveness across multiple devices and screen sizes Troubleshoot, debug, and resolve production issues with a strong sense of ownership and urgency Implement reusable UI components using ReactJS or Vue.js to enhance existing platforms (non-SPA architecture) Maintain high code quality standards through code reviews, testing, and best practices Collaborate with product managers, designers, and other stakeholders to deliver high-quality user experiences qualifications 5+ years of experience in frontend development Strong proficiency in: HTML5, CSS3 (SCSS/SASS), JavaScript (ES6+) Solid experience building responsive, pixel-perfect UI from design (Figma, Adobe XD, etc.) Hands-on experience working with Server-Side Rendering (SSR) or backend-rendered UI (e.g., Razor, PHP templating, WordPress theme development) Good understanding of how frontend integrates with backend systems for data rendering and dynamic content generation Experience working with WordPress (custom themes, plugins, WooCommerce) or similar CMS-based architectures Familiarity with ReactJS or Vue.js for building reusable components (used as embedded/enhancement, not full SPA) Strong knowledge of: Cross-browser compatibility Responsive design DOM manipulation & browser APIs Experience integrating with RESTful APIs (Axios/Fetch or similar) Proven experience in: Performance optimization (loading speed, lazy loading, asset optimization) Debugging and fixing production issues Basic backend understanding (e.g., PHP, .NET Razor, or similar) to support SSR workflows additionalInformation WHAT WE OFFER 20 days of annual leave – Because work-life balance matters. Premium healthcare package with MIC and comprehensive annual health check-ups 13th salary bonus Lunch allowance to fuel your productivity. Exposure to cutting-edge technologies and Agile methodology in a dynamic, modern work environment. Engaging company culture with fun activities like team buildings, company trips. Chance to work with high-profile multinational clients, expanding your global experience and technical expertise. Global collaboration – Work with both Vietnamese and international colleagues.