Wikimedia Foundation

Full-stack Engineer

• Deliver medium-complexity initiatives from technical discovery through delivery
• Break down initiatives into features, drive estimation, manage scope, identify risks, and support pragmatic tradeoffs
• Create mobile Wikipedia product experiences for global, multilingual audiences across web and app surfaces
• Design and build accessible, adaptable, scalable, and reusable frontend components
• Create and maintain RESTful APIs, schemas, contracts, monitoring, and scalable data pipelines
• Build software that is testable, observable, and debuggable
• Instrument features for deeper analysis by Product Analysts
• Collaborate with product managers, designers, analysts, and native app engineers
• Identify technical opportunities and risks, clarify priorities and sequencing, and align teams on outcomes and capacity
• Follow standards for code review, technical design, testing, documentation, accessibility, observability, and decision-making
• Plan work with awareness of downstream and upstream effects

Senior Software Engineer, Core Experiences – Contract

• Deliver medium-complexity initiatives from technical discovery through delivery
• Break down initiatives into features, drive estimation, manage scope, identify risks, and support pragmatic tradeoffs
• Improve mobile Wikipedia product experiences for a global, multilingual audience on iOS
• Lead system design for medium-sized projects and build accessible, adaptable, scalable components
• Build software that is easy to test, observe, and debug
• Instrument features for deeper analysis by Product Analysts
• Collaborate with product managers, designers, analysts, and native app engineers
• Identify high-impact technical opportunities and risks and clarify priorities and sequencing
• Maintain standards for code review, technical design, testing, documentation, accessibility, observability, and decision-making
• Plan work with awareness of downstream and upstream effects

Senior Software Engineer, iOS

Data Scientist

• Guide Wikipedia’s anti-abuse and security strategy as a member of the Product Analytics team
• Collaborate with product managers, engineers, designers, research scientists, security engineers, and other colleagues
• Inform product development strategy and evaluate the impact of features and interventions
• Set measurement strategy for detecting bots and inauthentic account activity
• Analyze and develop heuristics and approaches to detect potentially abusive activity
• Help develop and evaluate AI models to identify malicious user-authored code
• Make recommendations on product direction and data strategy
• Deliver quantitative data and insights to inform strategy and product decisions
• Communicate results and data-backed recommendations to cross-functional stakeholders
• Build and execute measurement strategies and evaluate experiments using Bayesian and Frequentist approaches
• Perform quantitative research
• Develop queries and code for large-scale internal and external data repositories using Apache Iceberg, Hive, Druid, Presto, and Spark
• Build automated self-service dashboards using DBT, Airflow, and Superset
• Help teams instrument features, perform data quality assurance, and use A/B testing tools
• Prioritize workload and select appropriate analytical methods

Senior Software Engineer, Core Experiences – Contract

Senior Software Engineer, iOS

Senior Data Scientist, Safety & Security