PixiJS Game Developer

Side; United States; Remote; USD 80,000 - 125,000; Part time

Benefits offered by this job

Competitive hourly rate

Remote within Brazil

3-month contract

Job summary

Side is seeking an experienced PixiJS Game Developer to own the technical quality, architecture, and performance of our browser-based games. This 3-month freelance engagement is fully remote within Brazil, requiring 40 hours per week and an immediate start within ~2 weeks.

You will ship features, optimize systems, and establish best practices while collaborating with a world‑class game services provider. This role is not for vibe coders; a proven track record is essential.

Qualifications

• Proven track record building and shipping commercial games with PixiJS.
• Experience delivering browser-based HTML5 games.
• Ability to optimize performance and architecture for maintainable code.
• Strong collaboration and version control in a production environment.

Responsibilities

• Implement gameplay features, UI systems, animations, audio, and game mechanics.
• Improve code quality, identify technical debt, and establish best practices.
• Work on existing titles previously developed with AI-assisted workflows.
• Ensure a consistent player experience across desktop and mobile devices.

Skills

PixiJS

Git workflows

Testing (Vitest/Playwright)

Animation (GSAP)

Audio (Howler.js)

Analytics/Monitoring (PostHog/Sentry)

Tools

Git

GSAP

Vitest

Playwright

Howler.js

PostHog

Sentry

Job description

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.

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

• 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, visitwww.side.inc