PixiJS Game Developer

*Applications and CVs/resumes MUST be submitted in English to be considered* This is a 3-month freelance engagement, working 40 hours per week, and is fully remote within Brazil, looking to start within 2 weeks. We are not looking for a vibe coder. We are seeking an experienced PixiJS Game Developer to take ownership of the technical quality, architecture, and performance of our browser-based games. This role is ideal for an engineer who has spent several years building and shipping game products with PixiJS and understands the realities of delivering maintainable, scalable, production-ready code. You will work on existing titles, improving and extending games that have been rapidly developed through modern AI-assisted workflows and prototyping processes. You will implement gameplay features, UI systems, animations, audio, and game mechanics while ensuring a consistent player experience across desktop and mobile devices. You will also be responsible for identifying technical debt, improving code quality, and establishing best practices that support long-term development and maintenance. This is not a role for a vibe coder - we need a developer with a proven track record of building, optimising, and shipping commercial games using PixiJS in a professional environment prior to the use of AI in coding. Requirements What we are looking for: - Strong experience using PixiJS - Good working knowledge of Git and collaborative development workflows - GSAP for animation and tweening - Howler.js for audio integration - Vitest and/or Playwright for testing and quality assurance - Analytics and monitoring tools such as PostHog and Sentry Nice to Haves: - Previous experience developing casual, puzzle, arcade, or mobile-style games - Experience shipping and supporting live HTML5/browser-based games - Familiarity with scalable game architecture and reusable gameplay systems - Experience optimising games for lower-spec or mobile devices - Understanding of asset delivery and CDN pipelines Benefits - Competitive Hourly Rate - Dynamic, multicultural and fun environment. - You will be working for the world's leading provider of game services. - We empower our people and offer regular progression opportunities to ensure our employees flourish. About Side Side (formerly PTW) is a global video game development and services provider, offering technical and creative solutions to many of the largest developers and studios around the world. Founded in 2009 and drawing on 30+ years' experience from our parent company in Japan, Side has since grown to become a global force with 20 studios in 14 countries across North America, Europe, South America, and Asia. Our industry-leading services include game development, art production, audio production, quality assurance, localization, localization QA, player support, community management, and datasets. Experience our side of life. For more information, visit www.side.inc