Wikimedia Foundation · 18 hours ago
Senior Data Scientist (Contract)
United States
Contract
Remote
Senior Level
$51/hr - $80/hrThe Wikimedia Foundation is a nonprofit organization that operates Wikipedia and other Wikimedia projects, aiming to create a world where everyone can freely share knowledge. They are seeking a Senior Data Scientist to support a research initiative focused on understanding traffic sources and engagement with Wikimedia projects, requiring strong analytical and documentation skills.
Computer Software
Responsibilities
Producing descriptive analyses of human traffic patterns, referrers, and indicators of traffic stability over time
Supporting preliminary assessments of how traffic sources relate to on-wiki engagement
Assisting in analyses of cases where sudden changes in visibility allow us to study downstream impacts on editing activity or content quality
Delivering cleaned/joined datasets, summary tables, and Jupyter notebooks supporting analyses
Conducting time-series analyses for Traffic Health indicators and content reusers
Performing natural experiment analyses with interpretable visuals and written summaries
Documenting methods describing assumptions, data limitations, and analytical decisions
Creating short briefs or memos explaining key findings for internal stakeholders
Providing clear handover materials enabling reproducibility
Developing early prototype views for dashboards (Superset/Turnilo) depending on time and feasibility
Drafting early specification drafts for indicators or experimental frameworks
Qualification
Required
Advanced SQL (large-scale distributed datasets)
Python expertise (pandas, numpy, statsmodels, scikit-learn, Jupyter)
Ability to work collaboratively in GitLab repositories
Time-series modeling experience
Applied causal inference (Diff-in-Diff, event studies, lag analysis)
Experience working with log-level or large behavioral datasets
Ability to evaluate data feasibility and design methodological approaches
Ability to interpret and communicate analytical uncertainty
Strong documentation practices and reproducibility mindset
Ability to work independently in a fast-moving, ambiguous research environment
Strong communication with non-technical stakeholders
Ability to manage competing priorities across multiple research modules
Preferred
Knowledge of the Wikimedia movement and ecosystem a plus
Company
Wikimedia Foundation
Wikimedia Foundation encourages the development and distribution of free educational content with projects such as Wikipedia.
Founded in 2003
501-1000 employees
H1B Sponsorship
Wikimedia Foundation has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (4)
2023 (5)
2022 (3)
2021 (1)
2020 (5)
Funding
Current Stage
Late StageTotal Funding
$158.98MKey Investors
Alfred P. Sloan FoundationCraig Newmark PhilanthropiesGoogle.org
2020-01-01Grant· $2.1M
2019-09-10Grant· $2.5M
2019-01-22Grant· $1.1M
Leadership Team
Maryana Iskander
Chief Executive Officer
Denny Vrandečić
Head of Special Projects
Recent News
MarketScreener
2025-12-04
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