Senior Front End Software Engineer (Autofill)

Accountabilities: Become a technical expert and trusted authority on browser extension autofill functionality and form change detection. Develop, maintain, and continuously improve a comprehensive suite of browser UI automation tests. Enhance autofill and form detection capabilities to support emerging web interface patterns and ensure reliable integration across browsers. Investigate browser-specific behavior and troubleshoot complex issues involving the DOM, content scripts, form events, and other browser mechanics. Participate in code reviews, technical discussions, collaborative learning, and knowledge-sharing activities across the Engineering team. Contribute occasional bug fixes and improvements submitted by the open-source user community. Help establish and implement agentic AI workflows and engineering tools that improve development practices while maintaining security, reliability, and software quality. Document complex technical solutions and communicate findings, decisions, and best practices to engineering colleagues. Requirements Deep understanding of browser UI behavior, including DOM manipulation and content scripts. Proficiency in vanilla JavaScript and TypeScript. Experience with a modern front-end framework such as Angular (preferred), React, or Vue. Understanding of browser extension development and the technical considerations involved in building cross-browser functionality. Strong problem-solving and investigative skills, with the ability to research unfamiliar technical challenges, identify solutions, and communicate findings clearly. Experience documenting complex technical concepts and sharing knowledge with other engineers. Proficiency with source control systems such as Git, SVN/Subversion, or TFS. Hands-on experience building or integrating agentic AI systems into software engineering workflows. Ability to assess when webpage fields can be safely populated and evaluate the reliability of software operating across web interfaces that are outside your control. Interest in applying AI meaningfully to specialized, low-level engineering work. Collaborative, adaptable, and open-minded approach, with authenticity and strong communication skills. Genuine enthusiasm for open-source software and improving internet security. Candidates who do not meet every listed qualification are still encouraged to apply. Diverse experiences and skills are valued, and reasonable accommodations are available during the interview process. Benefits Competitive U.S. base salary ranging from $140,000 to $200,000, depending on experience, skills, level, and geographic market. Fully remote work environment with collaboration across an international team. Opportunity to contribute to products that improve security for individuals and organizations worldwide. Exposure to advanced technologies in cybersecurity, browser engineering, and open-source software. Opportunities for personal and professional development, including ongoing learning and team-supported growth initiatives. Supportive and collaborative team culture, with opportunities to participate in team meetups. Inclusive environment that values diverse backgrounds, experiences, and perspectives.