3D Engineer

Job Title: 3D Engineer (Contract)
Company: Bat Around™
Location: Remote
Contract Length: Short-term

Bat Around is seeking a 3D Engineer with strong experience in real-time graphics, animation, and VFX using three.js to own and evolve the 3D layer of our React Native Expo mobile app.
You will be responsible for building, optimizing, and maintaining interactive 3D experiences that enhance our hardware-enabled sports training platform through visualization, animation, and gamified feedback.

This is a long term, fully remote contracting position.

Important: A minimum work overlap is required during the hours of 7:00 AM PT and 11:00 AM PT.

Bat Around is a software development startup creating an exciting sports training platform which bridges training facilities, commercially available sensor systems, and individual users through mobile apps and the web to promote regular and high quality practice through a unified platform and gamified systems. We’re fully remote and welcome team members from around the world. Learn more at https://letsbataround.com.

• Design, build, and maintain real-time 3D experiences, animations, and visual effects within a React Native Expo application

• Own the 3D rendering pipeline using tools such as three.js, WebGL, and expo-gl

• Collaborate with product, design, and engineering to prototype and polish interactive 3D features

• Optimize 3D scenes, shaders, and animations for performance on mobile devices

• Create reusable 3D systems and components that enable rapid iteration and content authoring

• Establish best practices for 3D, animation, and VFX development within the app

• Participate in planning the technical strategy for 3D features and visual experiences

• Contribute to overall application health through performance tuning, bug fixing, and code review

• Collaborate with the broader engineering team on application architecture and platform-level UI updates

• 3+ years of experience as a developer, with a strong focus on 3D graphics or
  interactive visuals

• Hands-on experience with three.js, WebGL, and real-time rendering concepts

• Experience integrating 3D content into React or React Native applications

• Familiarity with Expo and expo-gl or similar mobile graphics frameworks

• Strong understanding of performance optimization for mobile GPUs

• Solid engineering skills with expertise in debugging, profiling, and code review

• Excellent English communication skills and an open, honest personal style

• A proactive, innovative mindset focused on building polished, high-quality visual
  experiences

• Experience with Supabase, including real-time features and database management

• Familiarity with Expo API routes for backend integration

• Working knowledge of shader languages (e.g., GLSL) and advanced rendering
  techniques
  

• Experience shipping real-time 3D or graphics-heavy mobile applications

• Background in animation systems, shaders, or visual effects

• Experience visualizing sensor or motion data in 3D environments

• Familiarity with game engine concepts such as scene graphs, cameras, and lighting

• Experience collaborating closely with designers and artists

• Interest in sports, training, or motion analysis applications

• A strong aesthetic sense and attention to visual detail