Senior Frontend Engineer

ONL Biz Solutions Sdn Bhd; Kuala Lumpur; On-site; MYR 150,000 - 230,000; Full time

Job summary

ONL Biz Solutions Sdn Bhd in Kuala Lumpur seeks a Senior Frontend Engineer to build modern web apps, influence architecture, and continuously improve craft. You will work across frontend and BFF services, collaborate with backend teams, and mentor others.

The ideal candidate has 5+ years of production web app experience, hands-on with modern frameworks, and a strong focus on performance, accessibility, and maintainability. We value problem solving and ownership.

Qualifications

• 5+ years of experience building production-grade web apps.
• Hands-on with one or more modern frontend frameworks (React, Vue, Svelte, etc.).
• Experience consuming RESTful APIs and/or GraphQL services.
• Experience building and maintaining BFF services using Node.js.
• Familiarity with microservices architecture and distributed systems.
• Strong debugging, troubleshooting, and root-cause analysis skills.
• Good understanding of frontend performance optimization and accessibility.
• Strong focus on code quality, maintainability, and reliability.

Responsibilities

• Design, develop, and maintain scalable, high-performance web applications.
• Build reusable, maintainable frontend architectures and component libraries.
• Design, build, and maintain Backend-for-Frontend (BFF) services that support frontend applications.
• Collaborate with backend teams to define APIs and deliver seamless integrations within a microservices environment.
• Debug complex issues across frontend applications, APIs, and distributed systems.
• Optimize application performance, accessibility, security, and overall user experience.
• Evaluate and adopt new technologies, frameworks, and development practices when they provide meaningful value.
• Mentor junior developers through coaching, code reviews, and knowledge sharing.
• Contribute to technical discussions, architectural decisions, and engineering standards.
• Write clean, testable, and maintainable code.

Skills

5+ years exp

Frontend frameworks

REST/GraphQL

BFF services

Node.js

Microservices

Debugging

Performance optimization

Code quality

Tools

CI/CD

Containerization

Job description

Senior Frontend Engineer - Build Modern Web Applications. Influence Architecture. Keep Learning.

We're looking for a Senior Frontend Engineer who enjoys building exceptional web experiences, solving complex technical challenges, and continuously improving their craft. This role is ideal for an engineer with strong JavaScript fundamentals and a solid understanding of modern web technologies. While experience with modern frontend frameworks is important, we're less concerned with which framework you've used and more interested in your ability to solve problems, build maintainable applications, and adapt to evolving technologies. You'll work across frontend applications and Backend-for-Frontend (BFF) services, contribute to architectural decisions, mentor other engineers, and help drive engineering excellence throughout the development lifecycle.

What You'll Do

• Design, develop, and maintain scalable, high-performance web applications.
• Build reusable, maintainable frontend architectures and component libraries.
• Design, build, and maintain Backend-for-Frontend (BFF) services that support frontend applications.
• Collaborate with backend teams to define APIs and deliver seamless integrations within a microservices environment.
• Debug complex issues across frontend applications, APIs, and distributed systems.
• Optimize application performance, accessibility, security, and overall user experience.
• Evaluate and adopt new technologies, frameworks, and development practices when they provide meaningful value.
• Mentor junior developers through coaching, code reviews, and knowledge sharing.
• Contribute to technical discussions, architectural decisions, and engineering standards.
• Write clean, testable, and maintainable code.

What We're Looking For

• 5+ years of experience building and maintaining production-grade web applications.
• Hands-on experience with one or more modern frontend frameworks (React, Vue, Svelte, etc.).
• Demonstrated ability to learn and become productive with new technologies when needed.
• Experience consuming and integrating RESTful APIs and/or GraphQL services.
• Experience building and maintaining BFF services using Node.js or similar technologies.
• Familiarity with microservices architecture and distributed systems.
• Strong debugging, troubleshooting, and root-cause analysis skills.
• Good understanding of frontend performance optimization, accessibility, and modern web standards.
• Strong focus on code quality, maintainability, and reliability.

Nice to Have

• Familiarity with modern meta-frameworks such as Next.js, Nuxt, Remix, Astro, or SvelteKit.
• Knowledge of event-driven architectures and asynchronous communication patterns.
• Experience with containerization technology and CI/CD pipelines.
• Exposure to AWS, Azure, or Google Cloud.
• Experience with observability, monitoring, and performance analysis tools.

What Makes You Stand Out

• Strong engineering fundamentals beyond any specific framework.
• Curious, adaptable, and eager to learn.
• Enjoys solving challenging technical problems and debugging complex systems.
• Takes ownership and drives solutions from idea to production.
• Shares knowledge, mentors others, and helps raise engineering standards.
• Passionate about building scalable, maintainable, and high-quality software.

ONL Biz Solutions Sdn Bhd is a young and innovative IT software warehouse company based in Kuala Lumpur. We are driven by a vision to empower the younger generation in the technology era. Our team consists of passionate programmers and designers who thrive on new challenges and constantly seek innovation.

We pride ourselves on being a dynamic and rapidly expanding company. As part of our mission to grow, we are actively seeking talented individuals to join our team in Kuala Lumpur.