Senior Software Engineer – Rust + React

• CVs must be submitted in English
• You must be physically located in Brazil
• Contract PJ

We are looking for an experienced Senior Software Engineer specialising in Rust to help develop and extend a sophisticated high-performance web application.

The platform handles complex data structures large volumes of information and real-time user interactions presenting interesting engineering challenges across both frontend and backend systems.

This is a hands-on individual contributor role for an engineer who enjoys solving complex technical problems working with established codebases and building reliable scalable software.

You will work primarily with Rust while also contributing to technologies such as React TypeScript WebAssembly and Python.

• Rust Development: Design develop and maintain high-performance applications using Rust with a strong focus on memory safety concurrency and efficiency.
• Backend Engineering: Build and maintain Rust-based services responsible for data exchange AI agent orchestration and efficient delivery of results to frontend applications.
• Full-Stack Contributions: Work across the technology stack including React TypeScript WebAssembly (WASM) and Python.
• Performance Optimisation: Improve application performance across client and server focusing on memory management WebAssembly module loading and real-time data processing.
• Software Architecture: Extend and improve an existing complex Rust codebase while maintaining scalability reliability and maintainability.
• Cross-Functional Collaboration: Work closely with machine learning engineers product managers and designers to translate product requirements into robust technical solutions.
• Engineering Best Practices: Establish and promote strong Rust development standards including automated testing code reviews documentation and maintainable architecture.
• Continuous Improvement: Stay current with developments in the Rust ecosystem and identify opportunities to improve engineering practices and application performance.

• 5 years of professional software engineering experience developing and maintaining complex production-grade applications.
• 2 years of hands-on Rust development experience in production environments.
• Demonstrated experience working with and extending large existing Rust codebases rather than exclusively building applications from scratch.

• Strong understanding of Rusts ownership model memory management concurrency and performance optimisation.
• Deep understanding of composition-based software design and its application in Rust.
• Experience implementing and maintaining automated tests using Rust testing frameworks and methodologies.
• Practical experience compiling Rust into WebAssembly and integrating WASM modules into browser-based JavaScript or TypeScript applications.
• Proficiency in at least one additional programming language preferably Python or TypeScript.
• Experience using AI-assisted development tools to improve productivity and development workflows.
• Ability to design maintainable software architectures and troubleshoot complex performance issues.

• Excellent analytical and problem-solving abilities.
• Strong written and verbal communication skills.
• Ability to collaborate effectively with multidisciplinary teams.
• Comfortable taking ownership of technical challenges and delivering solutions independently.

• Experience with computer graphics including 2D/3D rendering CAD applications or related technologies such as WebGL or WebGPU.
• Familiarity with real-time collaboration and data synchronisation technologies such as SignalR or .
• Experience working in Agile development environments.

This role offers the opportunity to work on technically challenging software at the intersection of high-performance computing modern web technologies and AI-powered applications.

You will tackle complex engineering problems involving large datasets browser-based computation and real-time interactions while helping shape the architecture and technical direction of an evolving software platform.

It is particularly well suited to an experienced Rust engineer who values technical ownership high engineering standards and the opportunity to make a meaningful impact on a sophisticated software product.