Contract Senior Data Analyst (SQL,Telemetry,Browser Engine)

Mozilla; United Kingdom; Remote; GBP 55,000 - 75,000; Full time

Job summary

Mozilla is seeking a Remote UK data analyst to bridge telemetry and product strategy. You will build dashboards, audit Gecko telemetry for missing probes, and develop data-cleaning methods to isolate bot traffic and noise from telemetry streams.

You will deliver deep-dive analyses linking performance metrics like LCP to user engagement, collaborating with Performance, Data, and Product Leadership teams. Prior experience with BigQuery/Redash and AI tooling is highly valued.

Qualifications

• Proficient in SQL and data analysis techniques.
• Experience with data visualization using AI tools and dashboards.
• Knowledge of statistical methods (e.g., Pearson correlation, multivariate analysis).
• Knowledge of Rust/C++ is a plus and beneficial for telemetry work.
• Proficiency with AI tools such as Claude Code or Codex is desirable.

Responsibilities

• Create and maintain high-level dashboards translating telemetry into insights for Product Managers and leadership.
• Audit Gecko telemetry to identify missing data collection points or probes.
• Develop data sanitization frameworks to filter bot traffic and hardware noise from telemetry.
• Deliver analyses linking performance shifts (LCP, eTLD+1) to user engagement.

Skills

Advanced SQL

Data visualization

Statistical analysis

Rust/C++ knowledge

AI tools proficiency

Tools

BigQuery

Redash

Job description

Remote UK

The Gecko platform is the core engine of our product experience. To maintain competitiveness and user satisfaction, we must move beyond surface-level metrics to understand the deep correlations between engine performance and real-world user behavior. We currently face challenges with data quality, such as bot contamination in nightly telemetry, which obscures our understanding of true performance trends. A dedicated analyst is required to bridge the gap between engineering telemetry and actionable product strategy, ensuring that leadership has high-fidelity data to prioritize performance guardrails and technical budgets.

Engineering Deliverables

• Automated Dashboards: Create and maintain high-level overview dashboards that translate complex performance data into consumable formats for Product Managers and leadership.
• Telemetry Gap Analysis: Audit the Gecko codebase to identify missing collection points or "probes" necessary for a complete understanding of the product experience.
• Data Sanitization Frameworks: Develop methodologies and tools to identify and filter data inconsistencies, specifically focusing on isolating bot traffic and hardware-specific noise from telemetry streams.
• Behavioral Inference Reports: Deliver deep-dive analyses correlating technical performance shifts (e.g., LCP, eTLD+1) with user-facing pain points and engagement trends.

Scope, Skills, and Effort Estimate

Scope

The analyst will focus exclusively on Gecko engine telemetry across multiple platforms (Desktop and Android), collaborating with the Performance Team, Data Team, and Product Leadership.

Required Skills

• Technical: Advanced SQL (BigQuery/Redash), proficiency in data visualization using AI tooling, and experience with statistical analysis (e.g., Pearson’s correlation, multivariate analysis). Knowledge of Rust/C++ is a strong plus. Strong proficiency with AI tools like Claude Code, Codex, or similar is highly desirable.
• Soft Skills: Proven ability to work independently, translating technical requirements into business insights.
• Independent problem solving: Comfortable working in unfamiliar technical problem spaces and figuring out a path forward with minimal guidance, using documentation, experimentation, source code, data, and other available resources .

Hiring Ranges:

Remote UK

Voluntary Self-Identification

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As set forth in Mozilla’s Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law.

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