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Freelance - Senior Game Developer (UI, Animations & Polish) - Paper.io2

Job Overview

Location

Barcelona

Job Type

Contract

Category

Software Engineering

Date Posted

June 4, 2026

Full Job Description

đź“‹ Description

  • • Develop client-facing features for Paper.io 2 with a primary focus on UI, animations, and visual polish to enhance player experience and retention.
  • • Work on core gameplay improvements to increase engagement, flow, and satisfaction for millions of active users.
  • • Design, implement, and refine new meta features such as progression systems, reward structures, and social elements within the game.
  • • Enhance and optimize existing game systems for performance, stability, and scalability across diverse mobile devices.
  • • Collaborate closely with a small, senior, multidisciplinary team to translate design concepts into functional, high-quality game features.
  • • Take ownership of the full lifecycle of features—from ideation and prototyping to testing, iteration, and post-launch refinement based on player feedback.
  • • Apply deep expertise in Unity and C# to solve complex technical challenges related to animation, particle systems, shaders, or performance optimization.
  • • Contribute to key product decisions by providing technical insights and creative solutions that align with the game’s vision and player expectations.
  • • Ensure all implemented features meet high standards of quality, responsiveness, and visual appeal consistent with Voodoo’s top-performing titles.
  • • Work within a live-ops environment where rapid iteration, data-driven decisions, and player-centric design are critical to ongoing success.
  • • Maintain and improve code quality through clean architecture, documentation, and adherence to best practices in mobile game development.
  • • Support the global success of Paper.io 2 by delivering polished, engaging content that sustains its position as a leading hybrid-casual game.
  • • Participate in cross-functional reviews with designers, product managers, and QA to align technical implementation with gameplay goals.
  • • Stay current with mobile gaming trends and technologies to continuously elevate the game’s technical and creative standards.

🎯 Requirements

  • • 5+ years of professional experience in C# and Unity
  • • Proven track record in successful mobile game development
  • • Exceptional expertise in a specialized area such as animation, particle systems, shaders, architecture, performance optimization, or networking
  • • Strong problem-solving skills with a focus on optimization and performance
  • • Excellent written and verbal communication skills in English
  • • A creative, hands-on developer with a passion for quality work

🏖️ Benefits

  • • Best-in-class compensation
  • • Other benefits according to the country you reside

Skills & Technologies

Design
Senior
Hybrid

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About Voodoo SAS

Voodoo SAS is a French mobile game publisher and developer headquartered in Paris. Founded in 2013, the company creates and distributes free-to-play hyper-casual and hybrid-casual games for iOS and Android, including titles like Helix Jump and Paper.io. Voodoo operates worldwide studios and uses data-driven design to rapidly prototype and scale titles, generating revenue through in-app advertising and purchases.

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