Senior Web Engineer (Remote)

A5 Labs • San Jose, CA

7d • Remote

About The Position

We are looking for a Senior Web Engineer to join our architecture team. In this role, you will be responsible for designing and implementing core web components and systems, with a strong focus on performance, scalability, and long-term maintainability.

You will work closely with product managers, designers, and backend engineers to build high-quality web applications that run reliably across modern browsers and platforms. The ideal candidate has solid experience with JavaScript / TypeScript, a deep understanding of modern web architectures, and the ability to make sound technical decisions while collaborating effectively within a team.

Requirements

• Proficient in TypeScript.
• Familiar with at least two modern frontend frameworks (Vue / React / Angular), with a solid understanding of their design philosophies and differences.
• Strong ability to design state management architectures, establishing clear state boundaries and data flows to improve maintainability, testability, and long-term scalability.
• Experience with modular and component-based development, capable of writing maintainable and testable code.
• Ability to read, understand, and work with existing large-scale frontend codebases.

Nice To Haves

• Experience with any game engine such as Unity, Cocos, Egret, or PixiJS.
• Experience with desktop application frameworks such as Electron or Tauri.
• Hands-on experience analyzing and resolving real-world performance bottlenecks, memory issues, and stability problems.
• Familiarity with modern data fetching and caching strategies, including request deduplication, cache invalidation, and stale-while-revalidate.
• Experience with Strapi (Headless CMS).
• Experience with any SSR framework (e.g., Next.js, Nuxt.js, Nest.js).
• Hands-on experience with frontend security, familiar with common attack vectors and browser security mechanisms, and capable of reducing security risks in frontend applications.
• Experience with error tracking, performance monitoring, and issue investigation (e.g., Sentry).

Responsibilities

• Design, implement, and maintain Jenkins CI/CD pipelines; manage and maintain build nodes.
• Develop and maintain large-scale Web and Electron frontend applications.
• Participate in frontend performance optimization, making informed trade-offs between performance, maintainability, and system evolution.
• Collaborate with backend engineers, product managers, and designers to design scalable and maintainable frontend architectures and deliver high-quality UI/UX.
• Write testable, maintainable, and refactor-friendly code.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed
• Number of Employees: 101-250 employees