This job posting is from an external source. Click 'View Job Posting' below to apply directly on the employer's website.

We have a working system (metadata â AI reasoning â governance â hardware output). Your role is to rebuild the governance logic using the current system as the exact functional spec. Reference Validation You wonâ't validate outputs yourself â— our internal team evaluates correctness and provides rapid feedback. Your job is to refine and converge toward these expert-defined patterns. What Youâ'll Do rebuild reasoning/validation logic optimize async performance refine metadata â parameter mapping implement override/preference logic deliver a clean FastAPI backend Skills Needed Python FastAPI LLM structured outputs systems logic async/latency optimization

Senior Python Engineer

Animation libraries have become essential tools for creating engaging user interfaces in React applications. While Framer Motion has dominated the React animation space for years, Motion One emerged as a lightweight alternative that challenges the status quo. Both libraries offer declarative APIs and powerful animation capabilities, but they take fundamentally different approaches to solving the same problems.

The most significant difference between these libraries lies in their underlying architecture. Framer Motion builds on top of React's component model, providing a comprehensive animation framework tightly integrated with React's lifecycle. The library weighs in at approximately 32KB minified and gzipped, which includes its entire feature set.

Motion One takes a different path. Built on the Web Animations API (WAAPI), it provides a framework-agnostic core that React bindings wrap around. The base Motion library is just 4KB, while the React-specific @motionone/react package adds another 2KB. This architectural decision results in a dramatically smaller footprint—roughly 85% smaller than Framer Motion.

The bundle size difference matters most for mobile applications and sites where every kilobyte counts toward performance metrics. Teams working on content-heavy sites or mobile-first applications often find Motion One's smaller footprint compelling.

Framer Motion provides an extensive API surface with specialized components for different use cases. The motion component can wrap any HTML element or React component, offering props like whileHover, whileTap, whileInView, and gesture controls out of the box.

Motion One provides a more minimal API focused on core animation primitives. While it doesn't include built-in gesture handlers, it integrates well with libraries like @use-gesture/react when those features are needed. The philosophy centers on keeping the core small and composable.

Both libraries leverage hardware-accelerated CSS properties when possible, but their performance profiles differ in specific scenarios. Motion One's reliance on WAAPI means animations run on the compositor thread by default when animating transform and opacity properties. This provides consistent 60fps animations with minimal JavaScript overhead.

Framer Motion uses its own animation engine that provides more control over timing and complex animation sequences. The library includes features like automatic layout animations and shared element transitions that require JavaScript-driven calculations. For simple animations, the performance difference is negligible. Complex orchestrations or layout animations show where each library's strengths lie.

The layout prop in Framer Motion automatically animates position and size changes, even when triggered by content changes or DOM reflows. Motion One doesn't include this feature natively, requiring developers to implement layout animations manually using FLIP techniques or similar approaches.

Framer Motion ships with sophisticated spring physics that feel natural and responsive. The spring animations automatically adjust their duration based on the distance traveled and provide realistic motion that responds to interruptions mid-animation.

Motion One takes a different approach to springs. The library uses the spring easing function from Motion, which approximates spring physics using duration-based animations. While this doesn't provide the same physics-based interruption handling, it performs better and integrates seamlessly with WAAPI.

Framer Motion's variant system provides powerful tools for coordinating animations across multiple elements. Variants define named animation states that can propagate through component trees, enabling complex choreography with minimal code.

Motion One doesn't include a built-in variant system. Developers working with Motion One typically manage animation states through React state and props, which provides more explicit control but requires more boilerplate for complex orchestrations.

For React Native applications, Framer Motion offers framer-motion-3d and works with react-native-reanimated through community adapters, though support varies. The library wasn't designed with React Native as a primary target.

Motion One's architecture makes it web-specific—it depends on WAAPI, which doesn't exist in React Native. Teams building cross-platform applications need separate animation solutions for native platforms, though the imperative animate function from Motion can work with custom drivers.

Mobile web performance differs between the libraries. Motion One's smaller bundle and WAAPI foundation typically provide better performance on lower-end mobile devices. Framer Motion's JavaScript-driven animations may cause jank on devices with limited processing power, particularly when animating multiple elements simultaneously.

Choosing between these libraries depends on specific project requirements. Framer Motion excels in applications requiring sophisticated animation orchestration, layout animations, or gesture-driven interfaces. The comprehensive API reduces the need for additional libraries, and the variant system simplifies complex animation sequences.

Motion One suits projects prioritizing bundle size and performance. Applications with simpler animation needs, content-focused sites, or progressive web apps benefit from the minimal footprint. The library requires more manual work for advanced features, but this explicitness can lead to more maintainable code in some contexts.

Both libraries integrate well with modern React patterns. They support concurrent rendering in React 18+, work with Server Components (with appropriate client boundaries), and provide TypeScript definitions. Neither library causes hydration mismatches when used correctly, though both require care when animating on mount to avoid flickers.

The landscape of React animation libraries continues evolving. Framer Motion remains the go-to choice for feature-rich applications where animation is central to the user experience. Its comprehensive API, excellent documentation, and active community make it reliable for production use.

Motion One represents a compelling alternative for teams conscious of bundle size and performance. The library's minimal footprint and WAAPI foundation provide excellent performance characteristics, particularly on mobile devices. However, developers should expect to write more code for advanced features that Framer Motion handles automatically.

The choice ultimately depends on project constraints. Applications with complex animation requirements benefit from Framer Motion's batteries-included approach. Projects prioritizing performance and bundle size, or those with simpler animation needs, find Motion One's lightweight architecture advantageous. Both libraries have earned their place in the React ecosystem, serving different needs within the animation space.

Framer Motion vs Motion One: Mobile Animation Performance in 2025

We are looking for a Software Engineer to join our team. The ideal candidate will have experience in developing scalable web applications and a passion for technology. Responsibilities include designing, coding, and testing software solutions. You will work closely with product managers and other engineers to deliver high-quality products. Requirements: Proficiency in JavaScript, HTML, CSS, and experience with frameworks like React or Angular. Strong problem-solving skills and ability to work in a team environment.

Software Engineer

We are looking for a Software Engineer to join our team. The ideal candidate will have experience in developing scalable applications and a passion for technology. Responsibilities include designing, coding, and testing software solutions. You will work closely with product managers and other engineers to deliver high-quality products. Requirements: - Bachelor's degree in Computer Science or related field - Proficiency in Java, Python, or JavaScript - Experience with cloud technologies - Strong problem-solving skills.

Speed up your React Native app development with these 7 tricks to BOOST your apps performance. Don't reinvent the wheel with every new project!

🔥 Learn React Native FAST: https://galaxies.dev

Check out my React Native course on Galaxies.dev and start building production-ready apps today.

🚀 Zero to Hero: https://galaxies.dev/missions/zero-to-hero

🔗 Sentry Article: https://blog.sentry.io/react-native-performance-strategies-tools/

#############################

❤️  You can also find me on:
...

7 Tips to Make Your React Native App Blazing Fast! 🚀

Tanstack Start is a new meta framework that aims to solve many of the annoying problems with Next.js. In this video I will be showing you how to create a complete fullstack project using Tanstack Start and explaining how it compares to Next.js. By the end of this video you will know everything you need to know about Tanstack Start to build your own fullstack projects.


📚 Materials/References:

GitHub Code: https://github.com/WebDevSimplified/tanstack-start-todo-list
WDS Shadcn Registry: https:...

Archive