Software Engineer III, Core Experiences

Wikimedia Foundation

Software Engineer III developing web-first product experiences for the Wikimedia Foundation. Supporting App Growth and Moderator Tools engineering teams to enhance user engagement and retention.

Posted 5/13/2026full-timeRemote • Arizona, California, Colorado, Connecticut, Florida, Idaho, Illinois, Iowa, Maryland, Massachusetts, Minnesota, Missouri, Montana, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming • 🇺🇸 United StatesJuniorMid-Level💰 $92,267 - $144,201 per yearWebsite

Tech Stack

Tools & technologies

JavaScriptPHPPython

About the role

Key responsibilities & impact

Supports delivery of initiatives.
Breaks down complex features into tasks, anticipates risks and collaborates to resolve blockers.
Can successfully build moderately complex features and components with minimal support.
Takes ownership of bug fixes and production problems.
Designs and improves features with observability and testing as a core consideration.
Supports team alignment by asking clarifying questions, reinforcing agreements, and coordinating their work with cross-functional partners.
Contributes meaningfully to planning and helps scope work.
Participates in code reviews, design discussions, and technical planning.

Requirements

What you’ll need

Bachelor's + at least 2 years or equivalent professional web application experience.
Experience working with backend languages like PHP or Python.
Experience with front end languages particularly with Javascript frameworks.
A demonstrated ability to deliver testable, user-friendly features in a collaborative team environment.
Experience building responsive or mobile-first web experiences.
Experience converting design mockups into functional components.
Experience building features with observability and testing in mind.
Experience with incorporating performance and accessibility into features.
Experience in writing well-documented and readable code.

Benefits

Comp & perks

Health insurance
Retirement plans
Flexible work arrangements
Paid time off
Professional development
Wellness programs

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PHPPythonJavaScriptresponsive web designmobile-first designobservabilitytestingperformance optimizationaccessibilitycode documentation

Soft Skills

collaborationproblem-solvingcommunicationteam alignmentplanningtask breakdownrisk anticipationownershipclarifying questionscoordination

Certifications

Bachelor's degree