> Markdown version of [/jobs/ext/1621132-lead-software-engineer](https://www.wearedevelopers.com/jobs/ext/1621132-lead-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Lead Software Engineer - **Company:** Roche - **Location:** Barcelona, 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:** July 20, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role + 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. ## Description 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., + 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. ## Related Videos - [Getting to Know Your Legacy (System) with AI-Driven Software Archeology](https://www.wearedevelopers.com/videos/1437-getting-to-know-your-legacy-system-with-ai-driven-software-archeology) - [Data Science in Retail](https://www.wearedevelopers.com/videos/586-data-science-in-retail) - [This Is Not Your Father's .NET](https://www.wearedevelopers.com/videos/967-this-is-not-your-father-s-net) - [Get ready to Rustle](https://www.wearedevelopers.com/videos/698-get-ready-to-rustle) - [Data Science on Software Data](https://www.wearedevelopers.com/videos/162-data-science-on-software-data) - [Why your codebase lies to AI?](https://www.wearedevelopers.com/videos/100281-why-your-codebase-lies-to-ai) ## Related Articles - [Building AI Solutions with Rust and Docker](https://www.wearedevelopers.com/magazine/494-building-ai-solutions-with-rust-and-docker) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [4 reasons why you should learn Rust in 2021 – and maybe even have fun doing it](https://www.wearedevelopers.com/magazine/35-4-reasons-why-you-should-learn-rust-in-2021-and-maybe-even-have-fun-doing-it) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs)