Software Engineer, DOM Core

Who you are

You have a solid background in software engineering with experience in web technologies — you understand the intricacies of the Document Object Model (DOM) and how it interacts with user interfaces. You are proficient in JavaScript, HTML, and CSS, and you have a passion for improving web standards and user experiences. You thrive in collaborative environments and enjoy solving complex problems while continuously learning and growing as an engineer. You are comfortable writing code and tests, and you have experience building prototypes that push the boundaries of web capabilities.

Desirable

Experience with open-source projects is a plus — you understand the value of community contributions and are eager to collaborate with others in the field. Familiarity with Gecko, the engine behind Firefox, would be beneficial, as would any experience with event handling and user interaction design.

What you'll do

As a Software Engineer on the DOM Core team, you will be responsible for enhancing the DOM, HTML, and user interaction features within the Gecko engine. You will implement standardized APIs that improve page navigation and document loading, ensuring a seamless experience for users. Your role will involve writing high-quality code and tests, as well as building prototypes to explore new functionalities. You will work closely with other engineers to solve problems and innovate on existing features, contributing to the overall mission of making the internet better for people.

You will engage in continuous learning, keeping up with the latest developments in web technologies and standards. You will participate in code reviews and collaborate with your peers to maintain high coding standards and best practices. Your contributions will directly impact the user experience of millions of Firefox users worldwide, making your work both meaningful and rewarding.

What we offer

Mozilla offers a competitive salary range of €42,000—€62,000 EUR for this remote position in Spain. You will be part of a mission-driven organization that values diversity and inclusion, and you will have the opportunity to work on pioneering technology that shapes the future of the internet. We encourage you to apply even if your experience doesn't match every requirement, as we value curiosity and a growth mindset just as much as technical skills.