Sejun Kim
SDE at Amazon
Beaverton, Oregon, United States
Summary
👤
Senior🎓
Top SchoolSejun Kim is an SDE and research scientist with nine years’ experience building privacy-preserving ML and homomorphic encryption systems, holding a PhD in Computer Engineering. He led development of Intel HERACLES SDK and validation tools and architected end-to-end validation for OpenFHE CKKS on custom hardware, as well as the world’s first ISO 18033-6 compliant open-source Paillier library. His work spans low-level performance engineering—accelerating lattice math with AVX512 and NTT optimizations—to higher-level tooling and benchmarks that made HE proofs-of-concept practical for partners like Nasdaq. Now at Amazon after a brief stint at Cornami, he combines deep cryptographic research, patent-backed innovation, and production-grade software craftsmanship to enable secure computation across healthcare, finance, and education. An uncommon strength is translating theoretical HE advances into validated SDKs and automated validation flows that bridge research and deployable hardware.
8 years of coding experience
11 years of employment as a software developer
Bachelor of Science (BS) Electrical and Electronics Engineering, Bachelor of Science (BS) Electrical and Electronics Engineering at Seoul National UniversityDoctor of Philosophy (Ph.D.) Computer Engineering, Doctor of Philosophy (Ph.D.) Computer Engineering at Missouri University of Science and Technology
Github Skills (37)
intel10
cryptanalysis10
padding10
elliptic-curve-cryptography10
des10
fhe10
modular-arithmetic10
iso10
scheme10
partial10
homomorphic-encryption10
paillier9
security9
crypto9
python-extension9
Programming languages (4)
Github contributions (5)
intel/pailliercryptolib_python
Feb 2022 - Dec 2022
Intel Paillier Cryptosystem Library is an open-source library which provides accelerated performance of a partial homomorphic encryption (HE), named Paillier cryptosystem, by utilizing Intel® IPP-Crypto technologies on Intel CPUs supporting the AVX512IFMA instructions. The library is written in modern standard C++ and provides the essential API for the Paillier cryptosystem scheme. Intel Paillier Cryptosystem Library - Python is a Python extension package intended for Python based privacy preserving machine learning solutions which utilizes the partial HE scheme for increased data and model protection.
Contributions:6 releases, 1 review, 104 commits in 10 months
pythonpython-extensioncryptosystemfheelliptic-curve-cryptography
intel/pailliercryptolib
Feb 2022 - Dec 2022
Intel Paillier Cryptosystem Library is an open-source library which provides accelerated performance of a partial homomorphic encryption (HE), named Paillier cryptosystem, by utilizing Intel® IPP-Crypto on AVX512IFMA instructions. Intel Paillier Cryptosystem Library is certified for ISO compliance.
Contributions:5 releases, 15 reviews, 135 commits in 10 months
cryptanalysiscryptosystemcompliancefhecertified
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