
Senior Data Engineer
Mozilla · United States
- Hybrid
- Full-time
- $164,000 / year
- United States
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Senior Data Engineer
Mozilla · United States
Taylor Morgan
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Subject: Interested in the Senior Data Engineer role at Mozilla
Hi Taylor — I came across the Senior Data Engineer opening and wanted to reach out directly. I've spent the last few years doing exactly this kind of work, and Mozilla stood out because…
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Not recommended alone — most applicants never hear back.
Job highlights
- Build and manage data pipelines.
- Transform telemetry data into usable datasets.
- Partner with teams on data models.
- Ensure data quality and integrity.
- Improve data platform and architecture.
About the role
About Mozilla
Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people. 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.About This Team And Role
As a Senior Data Engineer at Mozilla, you will be a key member of our Data Engineering team. This team manages the entire data lifecycle: ingesting and transforming raw data into reliable, high quality models that empower Mozillians to make data informed decisions. You’ll bridge the gap between our technical systems and our business needs, helping us build a better data platform while making sure the data itself is easy for other teams to use and trust. Recent platform improvements the team has driven include launching a data catalog, introducing data observability, and implementing a medallion architecture to ensure our data is reliable, accurate, and accessible. Check out the Data@Mozilla blog for more details on our work.What You’ll Do
- Build the pipes: You’ll build and manage our business data pipelines as well as transform Firefox telemetry data into structured high quality datasets Mozillians can rely on
- Make data make sense: You’ll partner with data scientists, product, and marketing teams to turn complex datasets into the models and metrics that drive Mozilla’s decisions
- Be a guardian of data quality: You’ll ensure our datasets stay accurate and performant by using our observability tools to monitor quality and joining a weekly triage rotation to resolve data issues as they arise
- Evolve our platform: You’ll partner with other data engineers and platform engineers to improve how we work
- Maintain data integrity: You’ll ensure our data governance and privacy policies are implemented and enforced across the tens of terabytes of data flowing through our systems daily
What You’ll Bring
- Experience: At a minimum, 4 years of professional experience in data engineering
- Technical skills: Proficiency in SQL and Python, and an eagerness to integrate AI into data engineering workflows to help us scale
- Data modeling: Experience mapping complex business processes into extensible, analytical data models. You have a clear vision for long-term architecture but prefer an incremental approach that delivers immediate value while allowing our models to evolve.
- Strong software engineering fundamentals: You build modular, reusable code and efficient logic that remains performant when processing data at our scale
- Self directed execution: You are comfortable taking a high level goal and turning it into a plan. You have a track record of owning projects from start to finish, managing your own blockers, and keeping your team in the loop.
- Collaborative spirit: You possess strong communication skills and the ability to work effectively with a distributed team across different time zones.
- Our team requires skills in a variety of domains. You should have proficiency in one or more of the areas listed below, and be interested in learning about the others:
- A track record of recommending and implementing new data collection methods to improve data model quality
- You have used data to answer specific questions and guide company decisions.
- You have experience with cloud distributed systems (we use GCP) including distributed databases, message queues or batch / stream processing
- You ensure data is safe to depend on through smart orchestration, error handling, and idempotency
- Commitment to our values: Welcoming differences, Being relationship-minded, Practicing responsible participation, Having grit
What You’ll Get
- 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
- Annual professional development budget
- Quarterly well-being stipend
- Considerable paid parental leave
- Employee referral bonus program
- Other benefits (life/AD&D, disability, EAP, etc. - varies by country)
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, persons of all sexual orientations, 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.Key skills/competency
- Data Engineering
- SQL
- Python
- Data Modeling
- Cloud Distributed Systems
- Data Quality
- Data Governance
- AI Integration
- Data Observability
- Data Catalog
Skills & topics
- Senior Data Engineer
- Data Engineering
- SQL
- Python
- Data Modeling
- Cloud Computing
- GCP
- Data Pipelines
- Data Quality
- ETL
How to get hired
- Tailor your resume: Highlight your 4+ years of data engineering experience, SQL, Python, and cloud systems (GCP).
- Showcase your impact: Quantify achievements in data modeling and driving decisions with data.
- Demonstrate collaboration: Emphasize experience with distributed teams and cross-functional partnerships.
- Prepare for technical questions: Brush up on data pipeline construction, data quality, and GCP services.
- Understand Mozilla's mission: Connect your passion for an open internet to your data engineering skills.
Technical preparation
Master SQL for complex queries and transformations.,Practice Python for data manipulation and scripting.,Study GCP services for distributed systems.,Review data modeling and architecture principles.
Behavioral questions
Describe a complex data problem you solved.,How do you ensure data quality and integrity?,Explain collaboration with non-technical teams.,How do you handle project ownership and blockers?
Prefer to apply the usual way?
Not recommended alone — most applicants never hear back. Email the hiring manager first.
Frequently asked questions
- What are the salary ranges for a Senior Data Engineer at Mozilla?
- Mozilla offers competitive salaries for Senior Data Engineers, with ranges varying by US location tiers. For instance, US Tier 1 locations have a hiring range of $123,000 - $164,000 USD, while US Tier 3 locations range from $104,000 - $138,000 USD.
- What technical skills are most important for this Senior Data Engineer role at Mozilla?
- Proficiency in SQL and Python is essential for this Senior Data Engineer position. Additionally, experience with cloud distributed systems (especially GCP), data modeling, and an eagerness to integrate AI into data engineering workflows are highly valued.
- Does Mozilla offer remote work options for Senior Data Engineers?
- While the job description mentions working with a distributed team across different time zones, it does not explicitly state if the Senior Data Engineer role is remote. However, given Mozilla's global presence and focus on collaboration, it's likely they offer flexible work arrangements.
- How does Mozilla support employee development for Senior Data Engineers?
- Mozilla provides an annual professional development budget to support continuous learning. They also encourage employees to integrate AI into workflows, suggesting opportunities to expand skills in cutting-edge areas.
- What is the company culture like at Mozilla for a Senior Data Engineer?
- Mozilla is driven by its mission to make the internet better for people. They value a collaborative spirit, welcoming differences, relationship-mindedness, responsible participation, and grit. As a non-profit-backed company, they prioritize their mission over shareholder interests.
- What are the benefits for a Senior Data Engineer at Mozilla?
- Mozilla offers comprehensive benefits including generous performance-based bonuses, rich medical, dental, and vision coverage, substantial retirement contributions with immediate vesting, wellness days, paid parental leave, and a home office stipend.
- What kind of data challenges will a Senior Data Engineer tackle at Mozilla?
- A Senior Data Engineer will manage the entire data lifecycle, build and transform business and telemetry data into high-quality datasets, partner with data scientists and product teams, ensure data quality and integrity across terabytes of data, and evolve the data platform.
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