Guillermo Oyarzun
Senior GPU Engineer at Zama
Barcelona, Catalonia, Spain
Summary
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Rockstar🎓
Top SchoolGuillermo Oyarzun is a Senior GPU Engineer and applied research scientist with a PhD in High Performance Computing and over a decade of experience accelerating scientific and real-time systems on CPU/GPU architectures. He has led GPU development for Alya at the Barcelona Supercomputing Center, contributed to European exascale and combustion centers of excellence, and now focuses on Rust+CUDA acceleration of fully homomorphic encryption at Zama. Proficient in C++, Python, Fortran and parallel programming paradigms (MPI, OpenMP, CUDA, OpenACC, OpenCL), he blends deep HPC expertise with practical CI/CD and large-scale data experience. He also brings hands-on knowledge of PyTorch for embedding ML into simulations and a background in optimizing video/decoding pipelines for real-time sports analytics. Known for exploring energy-efficient and portable implementations across emerging architectures (A64FX, FPGAs, ARM), he’s a fast learner who moves research-grade algorithms into production-grade GPU code.
2 years of coding experience
14 years of employment as a software developer
Master Blockchain Technologies, Master Blockchain Technologies at UPC School (Universitat Politècnica de Catalunya)Engineer's degree Computer Science, Engineer's degree Computer Science at Universidad Tecnica Federico Santa MariaDoctor of Philosophy - PhD High performance computing , Doctor of Philosophy - PhD High performance computing at ESEIAAT-UPC
Spanish, English, Greek
Stackoverflow
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Github Skills (9)
intervals10
floating-point10
integer10
rust10
fhe10
privacy-enhancing-technologies10
cryptography10
homomorphic-encryption10
boolean10
Programming languages (1)
Github contributions (2)
gkigiermo/sp1-lwe-lr-proof-example
Aug 2024 - Aug 2024
Contributions:1 push in 1 day
zama-ai/tfhe-rs
May 2024 - Apr 2025
TFHE-rs: A Pure Rust implementation of the TFHE Scheme for Boolean and Integer Arithmetics Over Encrypted Data.
Contributions:130 reviews, 46 PRs, 269 pushes in 10 months
cryptographyencrypted-dataprivacy-enhancing-technologiesrustarithmetics
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