Web Game Developer

Description
At Side, we partner with some of the world's leading developers and publishers to solve complex production challenges and help bring exceptional games to life. From concept through live operations, our co-development teams work as trusted extensions of our clients' studios, contributing expertise across design, engineering, art, audio, QA, and production.
We're looking for a Web Game Developer with strong experience building browser-based games to help develop engaging, performant 2D experiences for desktop and mobile browsers. You'll work hands-on across rendering, animation, audio, responsive layouts, and performance optimization using a modern web technology stack.
This is a 3-month freelance engagement, working 40 hours per week, and is fully remote within Brazil.
Requirements
What you will be doing:
Browser Game Development
Build and maintain 2D browser-based games using TypeScript/JavaScript, PixiJS, SolidJS, Vite, HTML5, and CSS.
Implement game animations, transitions, and interactive experiences using tools such as GSAP.
Integrate web audio using Howler.js and manage game assets, sprites, textures, and atlases.
Performance & Responsive Experiences
Optimize games for performance across desktop and mobile browsers, including memory, rendering, loading, and runtime performance.
Build responsive experiences that work across different screen sizes, resolutions, and aspect ratios.
Use browser debugging and profiling tools to identify and resolve performance and technical issues.
Development Workflow
Collaborate with the team using Git and established development workflows.
Build reliable, maintainable systems that support efficient iteration and content development.
Troubleshoot technical issues across the game, browser, and web technology stack.
What We Are Looking For
Strong professional experience developing 2D browser-based games.
Proficiency with TypeScript/JavaScript and hands-on experience with PixiJS or a comparable 2D web rendering framework.
Experience with HTML5/CSS, SolidJS, Vite, and Git.
Strong understanding of browser-based animation and transitions, particularly GSAP.
Experience implementing web audio, ideally with Howler.js.
Proven experience optimizing web games for desktop and mobile browsers.
Strong understanding of responsive design, including different resolutions and aspect ratios.
Experience managing sprites, textures, atlases, and other game assets.
Comfortable using browser debugging and profiling tools to diagnose technical and performance issues.
Nice To Haves
Experience with Tailwind CSS.
Testing experience with Vitest and/or Playwright.
Familiarity with analytics and telemetry tools such as PostHog or Sentry.
Experience with asset delivery or CDN pipelines.
Previous experience developing casual, puzzle, or other HTML5 games.
Benefits
Competitive Salary.
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

Work arrangement
Yes