Senior Front-end Developer

Posted Yesterday
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Cầu Giấy, Hà Nội, VNM
In-Office
Senior level
Software
The Role
Build responsive, pixel-perfect UIs from designs, implement SSR/backend-driven interfaces, integrate REST APIs, develop/customize WordPress themes/plugins (WooCommerce), optimize performance, ensure cross-browser responsiveness, create reusable React or Vue components, debug production issues, and collaborate with backend engineers, designers, and product managers.
Summary Generated by Built In
Company Description

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 

Job Description

  • 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

Additional Information

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.

Skills Required

  • 5+ years of experience in frontend development
  • Proficiency with HTML5, CSS3 and SCSS/SASS
  • Proficiency with JavaScript (ES6+)
  • Experience building responsive, pixel-perfect UI from Figma or Adobe XD designs
  • Hands-on experience with Server-Side Rendering (SSR) or backend-rendered UI (e.g., Razor, PHP templating)
  • Experience developing and customizing WordPress themes and plugins (including WooCommerce)
  • Experience implementing reusable UI components using ReactJS or Vue.js (non-SPA embedded components)
  • Experience integrating with RESTful APIs (Axios/Fetch or similar)
  • Proven experience in performance optimization (lazy loading, code splitting, asset optimization)
  • Strong knowledge of cross-browser compatibility, responsive design, DOM manipulation and browser APIs
  • Experience debugging and resolving production issues
  • Basic backend understanding (PHP, .NET Razor, or similar) to support SSR workflows
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The Company
Nyon
245 Employees

What We Do

Founded in 1990, Verysell Group is a renowned global software development company, headquartered in Switzerland. We offer various services from staff augmentation to building bespoke software solutions for industries such as Fintech, Payment tech & InsurTech. Central to our business is the offshore development center (ODC) SmartDev LLC in Vietnam where we develop software for external customers and our in-house products such as VeryPay - a mobile money payment platform. Our offices are located in 8 cities on 4 continents. This allows us to cater to a diverse clientele, including start-ups, scale-ups, and large global enterprises. Our family of brands SmartDev, VeryPay, Smart81 & VeryPlay Studio helps us focus on specific market segments and client types. SmartDev is a broad base outsourcing partner for enterprise clients worldwide. Recognized as the Winner of SME100® Fast Moving Companies, SmartDev specializes in building FinTech apps, insurance software, and more. Smart81 is a subsidiary of SmartDev and is instrumental in accelerating growth for start-ups and scale-ups by advising, collaborating, and crafting enterprise-level technology through our offices in California, Singapore, and London – the world's leading centers of startup economy. VeryPay is a mobile payments technology provider offering technology solutions for African mobile network operators, while VeryPlay Studio serves as a full-cycle game developer, merging Switzerland's quality standards with Asia's production expertise. The Applied AI Lab, another innovative extension of the Verysell Group, showcases our commitment to AI revolution by providing high-level consulting services, aiming to integrate AI functionalities in business, thereby enhancing productivity and expanding product offerings. AI Lab is also an in-house center of excellence in this field with a mandate for AI transformation.

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