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Senior · Staff · Principal Frontend Engineer

San Francisco

San Francisco, California, United States · full time

Posted May 21, 2025Source checked Nov 9, 2026
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About this role

Senior / Staff / Principal Frontend Engineer

Location: Onsite San Francisco

We have multiple startups interested in talent. Here is a generic summary. Instead of a perfect job description, we present talented individuals to companies and allow them to share how that talent fits in the organization. 

A Front-End Developer is responsible for building the user-facing parts of websites and web applications, ensuring a seamless and visually appealing user experience. They translate designs into functional code using HTML, CSS, and JavaScript, and may also utilize frameworks and libraries. 

Key Responsibilities:

  • Develop and implement user interfaces:

Front-end developers create the visual elements of websites and applications that users see and interact with. 

  • Translate designs into code:

They take design mockups and wireframes and translate them into functional code using HTML, CSS, and JavaScript. 

  • Build interactive elements:

They create interactive features and animations to enhance the user experience. 

  • Ensure cross-browser compatibility:

They make sure the website or application functions correctly across different web browsers and devices. 

  • Optimize page load times:

They optimize code for speed and efficiency, ensuring a fast and smooth user experience. 

  • Collaborate with back-end developers:

They work closely with back-end developers to integrate the front-end with server-side logic and databases. 

  • Maintain and update existing websites and applications:

They may be responsible for fixing bugs, implementing new features, and maintaining existing code. 

  • Follow industry best practices:

They stay up-to-date on the latest front-end technologies and best practices. 

  • Test and debug code:

They thoroughly test their code to ensure it functions as expected and debug any issues that arise. 

Key Skills:

  • HTML, CSS, and JavaScript: Proficiency in these foundational web development languages is essential. 
  • Front-end frameworks and libraries: Knowledge of frameworks like React, Angular, or Vue.js is often required. 
  • Responsive design: Ability to create websites and applications that adapt to different screen sizes and devices. 
  • Version control systems (Git): Familiarity with version control systems like Git is crucial for collaborative development. 
  • Accessibility: Understanding of accessibility principles and how to make websites usable for people with disabilities. 
  • Problem-solving and debugging skills: Ability to identify and resolve issues in the code. 
  • Testing and debugging: Ability to test and debug code to ensure it functions correctly. 

Compensation: Market range and can include equity – details can be provided after the specific client is determined.  

From Lai’s career feed. View the original listing