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Senior Software Engineer, Core Experiences (Contract)

5 days, 15 hours ago
United States, Canada, United Kingdom, Germany, Italy, Netherlands, Poland, Spain, Switzerland, Mexico, Brazil, Colombia, India, Indonesia, Singapore, Ghana, Kenya, Morocco, South Africa
Contract
Senior
Software Engineer
Software Development
Android Drupal iOS JavaScript Machine Learning PHP REST API TypeScript Vue.js WordPress
Apply Now
Wikimedia Foundation

Wikimedia Foundation

Wikimedia Foundation provides the essential infrastructure for free knowledge by hosting Wikipedia, a collaborative online encyclopedia created and maintained by a global community of volunteers, along with various other educational projects aimed at m...

Internet Software & Services
251-1K
Founded 2001
$145M raised
View All Jobs 2

Description

  • Deliver medium-complexity initiatives from technical discovery through implementation, managing estimates, scope, risks, and trade-offs.
  • Design and build accessible, adaptable, scalable, and reusable mobile-first Wikipedia web experiences.
  • Develop RESTful APIs, including schema and contract design, monitoring, iteration, and scalable data pipelines.
  • Build software that is testable, observable, and easy to debug, with instrumentation for product analysis.
  • Collaborate with product managers, designers, analysts, and native app engineers on pragmatic cross-platform solutions.
  • Identify high-impact technical opportunities, clarify priorities, and align the team on outcomes and capacity.
  • Follow standards for code review, technical design, testing, documentation, accessibility, observability, and decision-making.
  • Plan work with awareness of upstream and downstream operational effects.

Requirements

  • Bachelor’s degree and 5–10+ years of related professional experience building production web applications and services.
  • Strong professional experience with JavaScript/TypeScript, Vue.js or similar JavaScript frameworks, and backend languages such as PHP.
  • Experience building responsive or mobile-first web experiences with attention to performance, accessibility, and usability.
  • Experience designing and integrating server-side APIs.
  • Experience delivering independently in a lean environment.
  • Commitment to the Wikimedia Foundation’s mission and values.
  • Experience integrating webview-based experiences into existing iOS or Android apps (preferred).
  • Experience launching and maintaining native or cross-platform mobile applications (preferred).
  • Experience with mobile games, interactive experiences, data science, machine learning, AI, or agentic coding (preferred).
  • Familiarity with Wikipedia, wikitext, Markdown, MediaWiki, other content management systems, open source, or distributed remote teams (preferred).

Benefits

  • Three-month, full-time contractor engagement.
  • Remote-first work with team members across more than 40 countries.
  • U.S. anticipated pay range of $56.07–$87.13, adjusted by location for applicants outside the United States.
  • Inclusive and equitable workplace with accommodation support for applicants with disabilities.
  • Hiring available in specified U.S. states and countries through local employment arrangements where applicable.

Interested in this position?

Apply directly on the company website

Apply Now

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