Senior Software Engineer, MediaWiki Content Platform Team

Role overview

Accountabilities

• Design and deliver large-scale wikitext processing infrastructure while balancing user experience, performance, compatibility, and maintainability.
• Own complex technical projects through architecture, implementation, testing, and production delivery.
• Develop and maintain PHP and JavaScript software, reliable APIs, scalable components, caching, persistence, and monitoring.
• Collaborate across engineering, product, design, client, and community teams to resolve challenges and deliver features.
• Contribute to testing, code reviews, security improvements, documentation, architectural decisions, and maintainability initiatives.
• Mentor engineers and help improve wider team technical quality through reviews, discussions, documentation, and guidance.

Requirements

• At least 5 years of relevant professional software engineering experience delivering production software at meaningful scale.
• Experience with parser generators, interpreters, language runtimes, compilers, or complete language feature lifecycles.
• Ability to independently lead complex projects, make architectural decisions, communicate trade-offs, and deliver with limited direction.
• Experience designing reliable, high-performance components used by other teams, products, or large user populations.
• Strong testing, code review, security awareness, architecture, cross-team collaboration, communication, and mentoring skills.
• Familiarity with HTML5 and DOM manipulation, Node.js, MediaWiki or other content management systems, and open-source contributions is advantageous.
• A degree in computer science, software engineering, STEM, or equivalent professional certification is welcome but not essential.

Technical environment

• The technical environment includes PHP, JavaScript, wikitext processing, internet-facing APIs, caching, persistence, monitoring, automated testing, and modern web technologies.
• Related or advantageous technologies include Node.js, HTML5, DOM manipulation, MediaWiki, Drupal, WordPress, Markdown, parser generators, interpreters, language runtimes, and compilers.

Team and working environment

• The team is globally distributed and fully remote, with synchronous and asynchronous collaboration.
• The environment values autonomy, collaboration, knowledge equity, open access, inclusion, sustainable work-life balance, and open-source work.

Benefits and development

• Benefits are applicable according to the country of hire and may include statutory benefits.
• The role offers professional development, large-scale software engineering expertise, occasional team or organizational travel, and work on open-source software serving hundreds of millions of users.