Staff Data Engineer

Mozilla (View all Jobs)

Remote US, Remote Canada, Remote Germany

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Interview Process

1. Deep-dive discussions on technical and mentorship problems solved in the past. No live coding. Total of 3 rounds.

Programming Languages Mentioned

ETL, SQL, Python, Java

Now more than ever, the Internet is a utility that facilitates modern life. At Mozilla, we take this to heart, striving to build products that keep the Internet open, accessible, and secure for everyone. We handle terabytes of data every day from millions of users to guide our decision-making processes. We need your help to enable the future of Mozilla in a way that makes us proud!

As a Staff Data Engineer at Mozilla, you’ll be taking a lead role in a cross-functional team to ensure the quality of data and insights, from product instrumentation through to the applications we use to perform analysis. Check out the Data@Mozilla blog for more details on some of our work.

  • You will join our team sharing responsibility for our infrastructure which ingests, stores, and transforms data at a scale of tens of terabytes per day
  • You will have significant impact on the effectiveness of the organization by overseeing major improvements to our data processing and analysis infrastructure through:
    • Meeting with leaders throughout the organization to understand their data needs
    • Translating those needs into practical requirements
    • Designing and proposing systems to satisfy those requirements
    • Leading and participating in the implementation of those systems
  • You will help provide strategic direction over 6-12 month timeframes
  • You will work with data scientists to answer questions and guide product decisions

General Professional Requirements:

  • Expertise with SQL, as well as one or more of the programming languages used by our teams (Python, Java, Rust)
  • Strong software engineering fundamentals: modularity, abstraction, data structures, and algorithms
  • Ability to work collaboratively with a distributed team
  • Solid experience with large scale data
  • Ability to effectively prioritize and direct work to maximize impact in meeting business needs
  • Excellent communication skills

Specific Skills/Experience:

Our team requires skills in a variety of domains. Strong candidates will have most or all of the following skills and attributes:

  • Experience with data infrastructure: databases, message queues, batch and stream processing
  • Use of data to answer specific questions and inform company decisions
  • Experience building modular and reusable ETL/ELT pipelines in distributed databases
  • Having worked on highly scalable distributed systems hosted on cloud providers (e.g. Google Cloud Platform)
  • Familiarity with data modeling patterns and their suitability for specific use cases

About Mozilla

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.

Commitment to diversity, equity, inclusion, and belonging

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, and persons of all sexual orientations and 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 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.


Group: C


Req ID: R1355

Please mention No Whiteboard if you apply!
I'm a one-man team looking to improve tech interviews, and could use any support! 😄

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