At Roche you can show up as yourself, embraced for the unique qualities you bring. The PositionWho We AreAt Roche Diagnostics Solutions (RDS), our mission is clear: to diagnose earlier, develop faster, and personalize treatment because every patient is unique.

Within Computational

Science & Informatics (CSI), we are the bridge between our origin and our future, shaping the next era of human health through precise, data-driven diagnostics and precision medicine. We excel in delivering rigorous, clinically actionable data analysis across our diagnostics portfolio, believing that advancing computational methods and informatics solutions is essential to harnessing dynamic human health data. The OpportunityIn this foundational role, you will act as our premier Rust expert, spearheading the strategic migration of our core execution engines, algorithms, and high-performance systems from C# to Rust.

Lead the strategic migration of legacy C# (.NET) codebases, execution engines, and complex algorithms into highly optimized, safe, and concurrent Rust applications.Design, develop, test, and maintain high-performance software components throughout the full software development lifecycle.Define all aspects of development for the new stack, establishing rigorous coding standards, workflows, and appropriate build and CI/CD environments.Provide technical guidance, expertise, and coaching to developers, playing a central role in upskilling the team and building internal Rust expertise from the ground up.Monitor team progress to ensure consistency with the initial architectural design, technical vision, and quality standards.Ensure all software strictly complies with requirements for quality, security,



modifiability, and extensibility while leveraging modern AI-supporting tools to optimize efficiency.You possess deep engineering intuition, love tackling complex architectural challenges, and excel at empowering others to adopt new modern paradigms.Extensive professional experience in software engineering, with a proven track record of shipping and maintaining production-grade Rust applications.Exceptional, production-level proficiency in Rust, including a deep mastery of its memory safety guarantees, lifetimes, async runtimes (such as Tokio), concurrency models, and standard tooling (Cargo, Clippy).Strong foundational knowledge of C# and .NET architectures to effectively understand, reverse-engineer, and transition existing codebases.Demonstrated architectural skills with a proven ability to design complex, scalable software systems and define clear technical visions.Excellent interpersonal and English communication skills, with the ability to articulate complex technical roadmaps and collaborate across cross-functional spaces.A Bachelor’s degree in Computer Science, IT, or a related technical field (or equivalent practical experience).Join us, and let’s thrive together in a culture built on trust, collaboration, respect, and high performance.

- Our efforts result in more than 26 million people treated with our medicines and over 30 billion tests conducted using our Diagnostics products. We empower each other to explore new possibilities, foster creativity, and keep our ambitions high, so we can deliver life-changing healthcare solutions that make a general impact.SummaryLocation: Sant Cugat del VallèsType: Full time

📌 Lead Software Engineer (Rust) (San Cugat del Vallés)
🏢 Roche
📍 San Cugat del Vallés