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# Lead Software Engineer (Rust)

- **Company:** Roche
- **Location:** Sant Cugat del Vallès, Spain
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Data Analysis, C Sharp (Programming Language), Computer Simulation, Continuous Integration, Reverse Engineering, Software Engineering, Information Technology, Codebase
- **Published:** August 20, 2026
- **Apply:** https://www.buscojobs.com.es/lead-software-engineer-rust-en-ribamontan-al-mar-ID-367675210

## About the Role

Qualifications & Skills: 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.
Exceptional talent for coaching, mentoring, and providing high-level technical guidance to engineering teams while navigating ambiguity with a forward-progress mindset.
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).

## Description

At Roche you can show up as yourself, embraced for the unique qualities you bring.Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to thrive both personally and professionally.This is how we aim to prevent, stop and cure diseases and ensure everyone has access to healthcare today and for generations to come.Join Roche, where every voice matters.The Position Who We Are At 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.By listening closely to patients and physicians, and leveraging digitization and cutting-edge technologies, we work collaboratively to turn insights into impact.This shared spirit creates an environment where ideas grow, new approaches are trialed, and competitive products reach patients faster-ultimately realizing the DIA 10-year vision and our One Roche ambitions so that everyone can access personalized healthcare solutions.The Opportunity In 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.You will join a forward-thinking and collaborative environment where your technical vision shapes the future of our engineering stack.Key Responsibilities: 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.Who You Are You are a visionary technical leader and a passionate educator who thrives when navigating ambiguity and driving technological evolution.You possess deep engineering intuition, love tackling complex architectural challenges, and excel at empowering others to adopt new modern paradigms.Qualifications & Skills: 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.Exceptional talent for coaching, mentoring, and providing high-level technical guidance to engineering teams while navigating ambiguity with a forward-progress mindset.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).If you're ready to make a meaningful impact on patients and healthcare systems worldwide through cutting-edge technology, this is the place for you.Join us, and let's thrive together in a culture built on trust, collaboration, respect, and high performance.* This is an on-site position and no relocation assistance is provided.Who we are A healthier future drives us to innovate.Together, more than 100'000 employees across the globe are dedicated to advance science, ensuring everyone has access to healthcare today and for generations to come.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 global impact.Let's build a healthier future, together.Roche is an Equal Opportunity Employer.Summary Location: Sant Cugat del Vallès Type: Full time


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