Marcelo

MARCELO E. KAIHARA

Agentic AI Engineer · AI Prototyping & Creative Technology, D.Eng.

Available for hire
Erdős number: 2
Agentic AI · Rapid Prototyping · Creative Technology

Senior Software Engineer specializing in agentic AI, LLM-based systems, and rapid prototyping. I build experimental applications with Python, LangGraph, and modern AI development tools, with experience taking complex systems from prototype to production. My R&D background spans AI, computer vision, confidential computing, and applied cryptography. I'm particularly interested in creating new human-AI experiences and turning emerging AI capabilities into useful products.

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Skills

Agentic AI & Prototyping
Agentic AI LangGraph CrewAI OpenAI SDK Claude API Rapid AI Prototyping LLM Applications AI-Assisted Development
Security & Cryptography
Confidential Computing Intel SGX OpenEnclave Applied Cryptography ZK Proofs ECC DCAP Attestation
Programming
Python C++ Rust Go
Cloud & Infrastructure
AWS Docker Git CI/CD Linux

Professional Experience

Education

Nagoya University

Doctor of Engineering in Information Science

Computer Arithmetic and Cryptography

Studies on Modular Arithmetic Hardware Algorithms for Public-Key Cryptography

Nagoya University

Master of Engineering in Information Engineering

Computer Arithmetic and Cryptography

A VLSI Algorithm for Modular Multiplication/Division

University of Buenos Aires

Bachelor of Engineering in Electronics Engineering

Telecommunications

Diploma cum Laude

Percentile rank: Top 1–5%

Languages

Native  ·  C2
Spanish Native
Japanese C2
English C2
Intermediate  ·  B1–B2
Italian B2
French B2
German B1

Certifications

Security May 2026
CISSP — Certified Information Systems Security Professional

ISC2

Cloud May 2024
AWS Certified Solutions Architect — Associate

Amazon Web Services

CISSP — Certified Information Systems Security Professional
ISC² — Issued May 2026
AWS Certified Solutions Architect — Associate
AWS Training and Certification — Issued May 2024
AI Coder: Complete Claude Code & Coding Agents Course
Udemy — Issued Aug. 2026
The Complete Agentic AI Engineering Course (2025)
Udemy — Issued Oct. 2025
CPP — C++ Certified Professional Programmer
Pearson VUE — Issued Feb 2019
CPA — C++ Certified Associate Programmer
Pearson VUE — Issued Oct 2018
PCAP — Certified Associate in Python Programming
Pearson VUE — Issued Apr 2019
Professional Scrum Master I
Scrum.org — Issued Mar 2017
Professional Scrum Product Owner I
Scrum.org — Issued Mar 2017
ZK Scaling Bootcamp
Encode Club — Issued Q4 2024
MasterZ Blockchain & Digital Assets
MasterZ — Issued Jul 2023
Corda Certified Developer
R3 — Issued Sep 2020
Certified Blockchain Expert
Blockchain Council — Issued Jul 2019
Data Protection and Big Data Research Ethics
SNSF Swiss National Science Foundation — Issued Oct 2019
TOEIC 955 — Percentile rank 99.3
ETS — Issued Mar 2001
Diplôme d'études en langue française DELF B2
Ministère de l'Éducation nationale — Issued Oct 2013
Goethe-Zertifikat B1
Goethe-Institut e.V. — Issued Sep 2017
CELI 2 — Certificato di Conoscenza della Lingua Italiana B1
Università Per Stranieri Di Perugia — Issued Oct 2019
Japanese-Language Proficiency 1-Kyū
The Japan Foundation — Issued Mar 2001

Publications

Journal Paper 2012
Solving a 112-bit Prime Elliptic Curve Discrete Logarithm Problem on Game Consoles using Sloppy Reduction

J.W. Bos, M.E. Kaihara, T. Kleinjung, A.K. Lenstra and P.L. Montgomery

Int. J. Applied Cryptography, Vol. 2, Issue 3, pp. 212–228, Feb. 2012.

Journal Paper 2008
Bipartite Modular Multiplication Method

M.E. Kaihara and N. Takagi

IEEE Transactions on Computers, Vol. 57, No. 2, pp. 157–164, Feb. 2008.

Journal Papers

Solving a 112-bit Prime Elliptic Curve Discrete Logarithm Problem on Game Consoles using Sloppy Reduction
J.W. Bos, M.E. Kaihara, T. Kleinjung, A.K. Lenstra and P.L. Montgomery, Int. J. Applied Cryptography, Vol. 2 Issue 3, p. 212-228, Feb. 2012.
Bipartite Modular Multiplication Method
M.E. Kaihara and N. Takagi, IEEE Transactions on Computers, vol. 57, No. 2, p. 157-164, Feb. 2008.
A Hardware Algorithm for Modular Multiplication/Division Based on the Extended Euclidean Algorithm
M.E. Kaihara and N. Takagi, IEICE Transactions on Fundamentals, vol. E88-A, No. 12, p.3610-3617, Dec. 2005.
Hardware Algorithm for Modular Multiplication/Division
M.E. Kaihara and N. Takagi, IEEE Transactions on Computers, vol. 54, No. 1, p. 12-21, Jan. 2005.

Conference Papers

Montgomery Multiplication on the Cell
Joppe W. Bos, Marcelo E. Kaihara, PPAM 2009, Vol. 6067 of LNCS, p. 477-485, 2010.
Selected RNS Bases for Modular Multiplication
J.-C. Bajard, M.E. Kaihara and T. Plantard, ARITH-19, p. 25-32, Jun. 2009.
Bipartite Modular Multiplication Best Paper Award
M.E. Kaihara and N. Takagi, CHES 2005, LNCS 3659, Springer-Verlag, p. 201-210, 2005.
A VLSI Algorithm for Modular Multiplication/Division
M.E. Kaihara and N. Takagi, ARITH-16, p. 220-227, Jun. 2003.

Doctoral Dissertation

Studies on Modular Arithmetic Hardware Algorithms for Public-key Cryptography
Marcelo E. Kaihara, Graduate School of Information Science, Nagoya University, Jan. 2006.

Technical Reports

Number Crunching on Clusters at EPFL
J.W. Bos, M.E. Kaihara, T. Kleinjung, A.K. Lenstra, D.A. Osvik, Flash Informatique 2009, EPFL.
Pollard rho on the PlayStation 3
J.W. Bos, M.E. Kaihara, P.L. Montgomery, SHARCS 2009, p. 35-50, Sep. 2009.
On the Security of 1024-bit RSA and 160-bit Elliptic Curve Cryptography
J.W. Bos, M.E. Kaihara, T. Kleinjung, A.K. Lenstra and P.L. Montgomery, Cryptology ePrint Archive: Report 2009/389, Aug. 2009.
A Multiplier/Divider for Modular Arithmetic Based on the Extended Euclidean Algorithm
M.E. Kaihara, N. Takagi, Technical Report of IEICE, VLD2004-1, vol.104, No.78, pg. 1-6, May 2004.
A Multiplication Division VLSI Algorithm for Modular Arithmetic
M.E. Kaihara, N. Takagi, LA Symposium, pg. 201-207, May 2004.
A Modular Multiplication/Division Algorithm for VLSI
M.E. Kaihara, N. Takagi, CS Sessions at 2003 IEICE Gen. Conf., Mar. 2003.
A Modulo M Multiplier/Divider
M.E. Kaihara, N. Takagi, Technical Report of IEICE, VLD2002-109, vol. 102, No. 476, p. 163-168, Nov. 2002.

Invited Talks

An Implementation of RSA2048 on GPUs Using CUDA
4es Rencontres Arithmétique de l'Informatique Mathématique, RAIM'11, Perpignan, France, Feb. 2011.
An Implementation of RSA2048 on GPUs
INRIA Nancy Grand-Est, LORIA, France, Nov. 2010.
Modular Arithmetic on PlayStation 3
LIP6, Université Pierre et Marie Curie, CNRS UPMC, Paris, France, Jan. 2010.
Pollard Rho sur PlayStation 3
Rencontres Arithmétique de l'Informatique Mathématique, RAIM'09, ENS Lyon, France, Oct. 2009.

Notes

MPC · Cryptography
Threshold ECDSA — MPC Deep Dive

Annotated walkthrough of threshold ECDSA — the cryptographic primitive enabling multi-party signing where no single party ever holds a complete private key.

Multi-Party Computation Threshold Signatures Distributed Key Generation ECDSA Secret Sharing
Read the annotated walkthrough

Contact

Open to full-time and contract roles in Agentic AI, AI prototyping, and creative technology — reach out directly.

marcelo.kaihara@protonmail.com

linkedin.com/in/mkaihara

github.com/mkaihara

researchgate.net/profile/Marcelo_Kaihara

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