Senior Front-end Engineer (React.js)

About DigiEx Group

DigiEx Group digiex.asia is a global technology partner specializing in Innovation Software Development, AI-powered solutions, Tech Talent services, and digital transformation services. Headquartered in Vietnam, DigiEx supports innovative companies around the world in building scalable tech products and elite engineering teams. With a strong focus on quality, agility, and innovation.

Job Description

We are looking for a Senior ReactJS Engineer to join our product team in building and scaling a modern AI-powered SaaS platform.

This role focuses on developing high-quality, scalable frontend applications using ReactJS and TypeScript, while actively collaborating with AI/ML teams to integrate intelligent features into real-world user workflows.

You will play a key role in architecting frontend systems, improving user experience, and applying AI capabilities to enhance product performance and automation.

Responsibilities

Design and develop scalable frontend applications using ReactJS and TypeScript

Architect reusable, maintainable component systems and frontend modules

Collaborate with backend and AI teams to integrate AI-powered features (e.g., content generation, smart suggestions, automation workflows)

Consume and optimize RESTful / GraphQL APIs for high-performance user experiences

Ensure high performance, responsiveness, and cross-browser compatibility

Optimize application performance for large-scale SaaS environments

Participate in technical design discussions and code reviews

Apply AI tools to improve development productivity and code quality

Contribute to frontend architecture decisions and best practices

Mentor junior/mid-level engineers when needed

Your Skills and Experience

5+ years of professional experience in frontend development

Strong proficiency in ReactJS, TypeScript, JavaScript (ES6+)

Solid understanding of modern frontend architecture and state management (Redux, Zustand, Context API, etc.)

Experience building and scaling SaaS products

Experience integrating AI-powered APIs (e.g., LLM APIs, automation services, recommendation systems) is a strong plus

Good understanding of performance optimization techniques

Familiar with CI/CD workflows and Git-based development

Strong problem-solving and analytical skills

Ability to communicate effectively in English

Experience working in Agile/Scrum environments

Nice to Have

Experience working with AI/ML-driven products

Familiarity with prompt engineering or AI workflow integration

Experience building global-scale SaaS platforms

Exposure to cloud environments (AWS, GCP, Azure)

Why You'll Love Working Here

Flexible working hours in a dynamic and innovative environment

Competitive salary and performance-based bonuses (reviewed 12 times/year)

Opportunity to build an AI-powered product serving global users

Clear career development path

Exposure to cutting-edge AI technologies

Company trips, team events, and global working culture