Wikimedia Foundation Tech Stack

Free knowledge platform serving Wikipedia and peer projects at global scale

Software Development San Francisco, CA 501–1,000 employees Founded 2003 Nonprofit

Wikimedia Foundation operates Wikipedia and allied free knowledge projects, serving millions of readers and supporting volunteer-driven content creation worldwide. The stack—MariaDB, MySQL, Kafka, Hadoop, Spark, Python—reflects infrastructure scaled for high-volume read traffic and data analytics; active hiring across engineering, data, and product signals investment in platform modernization, particularly around database scaling, security hardening, and abuse detection.

Tech Stack 36 technologies

Core StackDocker Kubernetes Terraform Ansible Linux MariaDB MySQL PHP JavaScript AWS Kafka Python Hadoop Apache Spark pandas NumPy scikit-learn GitLab SQL MediaWiki OpenAPI Hive Presto Apache Superset Looker Studio Google Workspace Google Sheets Excel statsmodels Jupyter+6 more

What Wikimedia Foundation Is Building

◆Challenges

Scaling database infrastructure
Protecting against attacks
Database availability and performance
Ensuring timely delivery and data accuracy
Increasing revenue targets
Building pipeline for further giving
Donor identification and qualification
Complex replication topologies
Preventing platform abuse from bots
Defending against emerging security threats

▲Active Projects

Database management workflow automation
Database backup restoration
New security features for wikipedia
Process improvement for internal controls
Form 990 preparation
Annual financial audits
Capacity and infrastructure planning
Modern authentication implementation
Platform abuse detection
Wikimedia enterprise data ingestion platform

Hiring Activity

Steady30 roles · 10 in 30d

Department

Engineering

Data

Product

Communications

Finance

Ops

Executive

Fundraising

Seniority

Senior

Staff

Lead

Manager

Mid

Director

Intern

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About Wikimedia Foundation

Wikimedia Foundation is a nonprofit organization operating Wikipedia, Wikimedia Commons, Wiktionary, and related free knowledge projects. The mission centers on enabling universal access to information and supporting volunteer communities who create and maintain content. Infrastructure spans distributed databases (MariaDB, MySQL), streaming (Kafka), data processing (Hadoop, Spark, Presto), and analytics (Superset, Looker Studio). The organization is headquartered in San Francisco with distributed teams across North America, Europe, and Asia-Pacific. Revenue comes from individual donations (average ~$15 per donor) and institutional grants.

HeadquartersSan Francisco, CA

Company Size501–1,000 employees

Founded2003

Hiring MarketsIndonesia, United States, United Kingdom, France, Sweden, Germany, Canada, Bulgaria

Frequently Asked Questions

What tech stack does Wikimedia Foundation use?

MariaDB, MySQL, PostgreSQL, Kafka, Hadoop, Spark, Presto for data; Docker, Kubernetes, Terraform for infrastructure; Python, PHP, JavaScript for application code; MediaWiki as the content platform.

What is Wikimedia Foundation working on?

Active projects include database infrastructure scaling and automation, modern authentication, platform abuse detection and bot prevention, Wikipedia security features, and an enterprise data ingestion platform to support donor analytics and fundraising operations.