Find your path to Charles
74 people in our graph share verified history with Charles — schools, employers, funds. One of them is your warm intro.
Andy TangunlockedCharles: together at Ledger (2018–2026)
×3Charles: together at Ledger
×6Charles: together at CEA - Commissariat à l'énergie atomique et aux énergies alternatives
×2Charles: together at Université Joseph Fourier (Grenoble I)
About
Charles Guillemet is Chief Technology Officer at Ledger, a role he has held since 2019 after joining the company in 2017 as Chief Security Officer. He began his career at Tiempo, where he designed the security of EAL5+ secure integrated circuits, and later served as Technical Manager at an Information Technology Security Evaluation Facility within the CEA. He holds a Master of Science in Cryptography and Security from ENSIMAG, where he also worked as a lecturer, and his areas of expertise include cryptography, blockchain, and software engineering.
CEO at Ledger
Intro paths
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In turn, Charles can intro founders to Ledger's investors below.
Ledger's investors · 16
Activant CapitalNew York · $100K – $50M checksAglae VenturesParis · $108K – $5.4M checksCAP HORN VCParis · $1.1M – $22M checksCathay InnovationParis · $5M – $40M checksClub Italia Investimenti 2Milan · $27K – $108K checksCrypto com CapitalSingapore · $2.5M – $19M checksDigital Currency GroupNew YorkDraper AssociatesSan Mateo · $500K – $5M checksDraper DragonSilicon ValleyFELIX CAPITALLondon · $1M – $20M checksKorelya CapitalParisMolten VenturesLondon · $2.5M – $63M checksMoonhill CapitalMorgan Creek CapitalChapel Hill · $1M – $5M checksNucleus Adventure CapitalNew YorkTrue Global VenturesSingapore
Experience
- LedgerCTOcurrent2019 — present
- LedgerCSO2017 — 2019Région de Paris, France
- CEA - Commissariat à l'énergie atomique et aux énergies alternativesTechnical Manager2015 — 2017Région de Grenoble, France
- CEA - Commissariat à l'énergie atomique et aux énergies alternativesCESTI - Cryptography & Security Evaluator2014 — 2015Greater Grenoble Metropolitan Area
- Grenoble INP - EnsimagTeaching - SmartCard Security - Master II2015 — 2017Région de Grenoble, France
- Tiempo S.A.S.Cryptosystems Design Expert2009 — 2014Région de Grenoble, France
Skills & more
Cryptography61Software Development26Algorithms18Mathematics43Cryptographie11Sécurité10Algorithmes7Electronic Circuit Design6System Verilog4Formal methods5Assurance qualité5Qt2
+10 more
Deep LearningBlockchainCUnixLaTeXCommon criteriaC++SmartcardsPythonLinuxLanguages English · French
From Charles's professional profile.
Frequently asked questions
- Who is Charles Guillemet?
- Charles Guillemet is Chief Technology Officer at Ledger, a role he has held since 2019 after joining the company in 2017 as Chief Security Officer. He began his career at Tiempo, where he designed the security of EAL5+ secure integrated circuits, and later served as Technical Manager at an Information Technology Security Evaluation Facility within the CEA. He holds a Master of Science in Cryptography and Security from ENSIMAG, where he also worked as a lecturer, and his areas of expertise include cryptography, blockchain, and software engineering.
- Where does Charles Guillemet work?
- Charles Guillemet is CEO at Ledger.
- Where did Charles Guillemet go to school?
- Charles Guillemet studied at National School of Computer Science and Applied Mathematics of Grenoble (ENSIMAG - Master 2 - École Nationale Supérieure d'Informatique et de Mathématiques Appliquées, Mathematics and Computer Science); Université Joseph Fourier (Grenoble I) (Master 2, Security); Université montpellier 2 (Maitrise (Master 1), Mathematics).
Same school
Also attended National School of Computer Science and Applied Mathematics of Grenoble22
Cyril AbiteboulVenture Partner at HCVCMelissa YvonnouInvestment Director at Atlantic Bridge VenturesThibaut BechetoilleFrench Advisory Board Member at Benhamou Global VenturesRocío Pillado LópezPartner at Adara VenturesRaffi KamberGeneral Partner at SingularHugues ( Hugo ) DongmoPartner at XBTO Humla Ventures
+ 16 more
Also attended Université Joseph Fourier (Grenoble I)14
Sylvia TobéManaging Director at JDRF T1D FundAdam KingVice President at GroundForce CapitalHelen GironiDirector of Ventures at Ufi VocTech TrustSergiu RoscaFounding Partner at GapMinderFrancis WathenInvestment Principal at Channel 4 VenturesRamon LamanaFounder at Okteto
+ 8 more
Shared employers
Also worked at Ledger21
Andy TangPartner at Draper AssociatesAuguste FagniezSenior Associate at FusionFrederic CourtInvestor at FELIX CAPITALFleur PellerinFounding Partner at Korelya CapitalPaul DegueusePartner at Korelya CapitalMarguerite de TavernostInvestment Director at Cathay Innovation
+ 15 more
Also worked at CEA - Commissariat à l'énergie atomique et aux énergies alternatives43
Pierre GalletInvestor at DaphniInês Macedo SantosPrincipal at Armilar Venture PartnersPierre KienerInvestment Director at CapagroMathieu CostesOperating Partner at Airbus VenturesGuilhem ChaumontInvestor at FEBE VenturesInes de Macedo SantosSenior Associate at Armilar Venture Partners
+ 37 more