Contract Senior Data Analyst (SQL,Telemetry,Browser Engine)
At a glance
Senior Data Analysis & BI role at Mozilla. Remote, United Kingdom · £58,500–£78,000 base.
dataroles summary, based on the employer's posting.
What you'll do
- Build and maintain dashboards that make Gecko performance data usable for product managers and leaders
- Review Gecko source code to find telemetry probes needed for a fuller picture of product experience
- Create ways to detect and remove bot activity and hardware-related noise from telemetry data
- Analyze links between performance changes, including LCP and eTLD+1, and user pain points or engagement
What you bring
- Advanced SQL skills, including work with BigQuery or Redash
- Experience applying statistical methods such as correlation and multivariate analysis
- Skill in data visualization using AI tools
Who this fits
This suits an independent analyst who can turn technical needs into useful product insights and make progress in unfamiliar problem areas with limited direction. You’ll focus on Gecko telemetry across desktop and Android, working with performance, data and product leadership teams. The role is remote in the UK.
From the employer
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.
- Domain Knowledge: Ability to understand browser component interactions and their impact on user experience.
- 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£58,500—£78,000 GBP
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