Sr. UI Engineer Taiwan

Join a fast-growing global leader in cybersecurity, trusted by some of the biggest names in the industry. Besides many enterprises and government agencies, nearly 30% of the world’s top MSSPs (Managed Security Service Providers) rely on our platform, and that number is growing every day as more companies recognize the value of next-generation security solutions. We're at the forefront of protecting organizations against sophisticated cyber threats using cutting-edge AI and automation technologies.

We offer a highly competitive compensation package on par with industry leaders like Google and Microsoft, ensuring our team is rewarded for their expertise and dedication. We are fully remote, providing the flexibility to work from anywhere in Taiwan or Japan. We are rooted in transparency and openness, without rigid hierarchies. We are feedback-driven, encouraging open communication and innovation at every level. Our culture is built on diversity, openness, and collaboration, fostering creativity and innovation that drives real impact in the market.

Position Overview:

Join Stellar Cyber as a Sr. UI Engineer to drive the development of scalable, high-performance web interfaces that power our Open XDR platform. This is a hands-on engineering role for someone who thrives in a fast-paced startup environment, enjoys solving complex technical challenges, and is passionate about user experience and code excellence. As a senior member of the UI team, you will play a critical role in architecting frontend solutions, mentoring peers, and contributing to the overall UI strategy. You will work closely with cross-functional teams to deliver intuitive, responsive, and secure interfaces that meet the demands of enterprise cybersecurity customers.

Responsibilities:

• Lead the development of modular, high-quality UI components using JavaScript, TypeScript, and Angular.
• Translate product requirements and complex workflows into intuitive, performant user experiences.
• Collaborate with product, UX, and backend teams to define technical specs and architectural direction.
• Establish and enforce frontend coding standards, design patterns, and testing best practices.
• Own the performance optimization of large-scale UIs, proactively resolving rendering, loading, and responsiveness issues.
• Contribute to CI/CD pipelines, UI testing automation, and build/release tooling.
• Provide technical leadership and mentorship to junior developers through code reviews, design sessions, and paired programming.
• Actively participate in sprint planning, architecture reviews, and roadmap discussions.
• Investigate and resolve production issues with a focus on root cause and long-term stability.

Requirements

• Bachelor’s/Master’s degree in Computer Science or a related field.
• 7+ years of professional experience building complex UI applications.
• Expert-level knowledge of JavaScript, TypeScript, and a modern UI framework (Angular preferred).
• Proven experience with large-scale enterprise UIs, reusable design systems, and performance optimization.
• Hands-on experience with unit testing, integration testing, and UI automation tools.
• Familiarity with CI/CD tools, version control, and agile development practices.
• Strong understanding of web security, cross-browser compatibility, and accessibility.
• Excellent communication and collaboration skills across technical and non-technical stakeholders.
• Experience in a cybersecurity or SaaS platform environment is a strong plus.