Jobs in Sevilla, Spain

Remote Spain

The Mozilla Corporation is wholly owned by the non‑profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.

The OS Integration team ensures Firefox and other Gecko‑based products harmonize well with the host operating system and environment. This includes native crash reporting, OS abstraction layers, sandboxing and hardening. We’re a distributed team with expertise in Windows, macOS, and Linux‑based operating systems with this role focusing on macOS.

In this role, you will be a member of the OS Integration team specializing in crash reporting for Firefox. You will help to maintain and evolve client‑side crash and error reporting across supported operating systems, enabling other engineers to maintain a high quality of our products.

• Develop, test, and ship fixes and new features for Firefox crash reporting, with a focus on creating a high‑quality user and developer experience.
• Maintain and evolve code that detects and reports crashes. In doing so you will interact with low‑level OS primitives.
• You will analyze crash data and come up with insights about it
• Grow your expertise while collaborating with a distributed team and participating in technical discussions, planning, code reviews, and problem solving.
• Break down problems into manageable units, seek early feedback, and document your design choices to foster learning and alignment.

• A degree in Computer Science or in an affine topic or comparable work experience.
• The desire to understand the nitty‑gritty details of stack walking and post‑mortem analysis of a process.
• Proven fluency in Rust and/or C++, for two years in a professional environment. Knowledge of compiler, debugger or OS development are bonuses.
• Ideally some engineering work examples of low‑level programming.
• Strong problem‑solving and debugging skills.
• Written and verbal communication skills with a collaborative mindset.
• Willingness to work effectively in a distributed team environment.
• Commitment to our values:
  • Being relationship‑minded
  • Having grit

• Generous performance‑based bonus plans to all eligible employees - we share in our success as one team
• Rich medical, dental, and vision coverage
• Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
• Quarterly all‑company wellness days where everyone takes a pause together
• Country specific holidays plus a day off for your birthday
• One‑time home office stipend
• Quarterly well‑being stipend
• Considerable paid parental leave
• Employee referral bonus program
• Other benefits (life/AD&D, disability, EAP, etc. - varies by country)

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity‑seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientation s, gender identities, and expressions.

We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at hiringaccommodation@mozilla.com to request accommodation.

We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.