Senior C/C++ Developer at Valtech

Why Valtech? We’re the experience innovation company - a trusted partner to the world’s most recognized brands. To our people we offer growth opportunities, a values-driven culture, international careers and the chance to shape the future of experience. The opportunity At Valtech, you’ll find an environment designed for continuous learning, meaningful impact, and professional growth. Whether you're pioneering new digital solutions, challenging conventional thinking or building the next generation of customer experiences, your work will help transform industries. We are proud of: • The work we do and the innovation we drive • Our values of share, care and dare • A workplace culture that fosters creativity, diversity and autonomy • Our borderless, global framework, which enables seamless collaboration The role As a Senior C/C++ Developer , you are passionate about experience innovation and eager to push the boundaries of what’s possible. You bring 8+ YEARS of experience, a growth mindset and a drive to make a lasting impact. You will thrive in this role if you are: • A curious problem solver who challenges the status quo • A collaborator who values teamwork and knowledge-sharing • Excited by the intersection of technology, creativity and data • Experienced in Agile methodologies and consulting (a plus) Role responsibilities • Infrastructure Redesign: Architect and implement a new parallel processing framework optimized for Linux internals, replacing Windows-specific threading and IPC models. • Numerical Precision Management: Design and implement strategies to handle platform-specific differences in floating-point arithmetic to ensure identical scheduling and result parity between legacy Windows and new Linux environments. • Dependency Isolation & Management: Modernize and isolate the dependency chain, moving from Windows-specific libraries to cross-platform or Linux-native alternatives (e.g., using Conan or vcpkg). • Performance Engineering: Profile and optimize system-level components including session lifecycles, memory management, and I/O for high-throughput Linux environments. • Legacy Porting: Isolate and migrate complex C++ logic while maintaining strict functional equivalence Must have qualifications • Expert C++ (8+ years): Mastery of modern C++ (C++17/20), STL, and low-level systems programming. • Cross-Platform Migration: Proven experience porting large-scale, performance-critical applications from Windows (Visual Studio) to Linux (GCC/Clang). • Deep Linux Internals: Strong expertise in POSIX threads, IPC (Unix domain sockets, D-Bus), and Linux-specific performance tools (GDB, Valgrind, perf). • Parallel Computing: Experience with high-concurrency architectures, lock-free data structures, and distributed scheduling. • Numerical Sensitivity: Solid understanding of IEEE 754 standards and how different compilers/architectures affect numerical stability in simulations or financial modeling. Nice to have qualifications • Experience with build systems like CMake or SCons and containerization (Docker) for consistent deployment. • Background in High-Performance Computing (HPC) or Scientific Computing. • Familiarity with SIMD optimizations or GPU-accelerated computing If you do not meet all the listed qualifications or have gaps in your experience, we still encourage you to apply. At Valtech, we recognize that talent comes in many forms, and we value diverse perspectives and a willingness to learn. Commitment to reaching all kinds of people We design experiences that work for all kinds of people - and that starts with our own teams. At Valtech, we’re intentional about building an inclusive culture where everyone feels supported to grow, thrive and achieve their goals. No matter your background, you belong here. Explore our Diversity & Inclusion site to see how we’re creating a more equitable Valtech for all. The benefits This is a [EMPLOYMENT TYPE] position based in [COUNTRY / Location]. [IF SALARY RANGE IS REQUIRED] The offered salary range is [RANGE] annually, depending on experience and location. Beyond a competitive compensation package, we offer: • Flexibility, with remote and hybrid work options (country-dependent) • Career advancement, with international mobility and professional development programs • Learning and development, with access to cutting-edge tools, training and industry experts Our benefits are tailored to each location. Your Talent Partner will provide full details during the hiring process. Your application process Once you apply, our Talent Acquisition team will review your application. Your CV should cover key information on relevant experiences and expertise. We do not require information such as age, gender, marital status, or a headshot in your application. We review all candidates based on skills, experience, and potential. ⚠️ Beware of recruitment fraud! We are committed to inclusion and accessibility. If you need reasonable accommodations during the interview process, please either indicate it in your application or let your Talent Partner know. About Valtech Valtech is the experience innovation company that exists to unlock a better way to experience the world. By blending crafts, categories, and cultures, we help brands unlock new value in an increasingly digital world. At the intersection of data, AI, creativity, and technology, we drive transformation for leading organizations, including L’Oréal, Mars, Audi, P&G, Volkswagen Dolby, and more. At Valtech, we don’t just talk about transformation. We make it happen. Our people are the heart of our success, and we foster a workplace where everyone has the support to thrive, grow and innovate. Are you ready to create what’s next? Join us.