Mamy André-ratsimbazafy
Freelance Engagements - Cryptography, Compiler And Software Engineering at Lita
Paris, Ile-de-France
Summary
🤩
Rockstar🎓
Top SchoolMamy André-ratsimbazafy is a multidisciplinary engineer with 15 years of experience building high-performance blockchain, cryptography and compiler systems from research to production. Currently freelancing and holding engineering roles in Paris, he has driven Ethereum client development (notably contributions to Nimbus-eth2 and eth1) and implemented core cryptographic primitives including DKG, VSS and KZG commitments for data availability sampling. He blends deep systems skills in Nim, parallel and GPU computing with data science and finance expertise, having applied ML to real-world problems from satellite deforestation detection to retail prediction. Comfortable at the intersection of protocol design, privacy-preserving cryptography (ZK) and resource-constrained VMs, he also navigates ethics, legal and impact-driven product strategy. Beyond code, he’s an educator and community builder who prefers empowering communities via censorship-resistant, privacy-first tools—an uncommon combination of hacker-level systems work and social impact experience.
15 years of coding experience
5 years of employment as a software developer
Passed CFA level I, Investment Management, Financial Analysis, Passed CFA level I, Investment Management, Financial Analysis at CFA InstituteGrowth Hacking, Scaling a startup, Expect the unexpected, Growth Hacking, Scaling a startup, Expect the unexpected at Join LionMaster's degree, Aerospace engineering, Energy and Power, Master's degree, Aerospace engineering, Energy and Power at Nanjing University of Aeronautics and AstronauticsMaster's Degree, Mechanical and Industrial engineering, Energy & Fluid dynamics, Master's Degree, Mechanical and Industrial engineering, Energy & Fluid dynamics at Arts et Métiers - École Nationale Supérieure d'Arts et Métiers
French, Italian, Chinese, German
Github Skills (26)
nim-lang10
testing10
data-structure10
cryptocurrency10
compiler-compiler10
ethereum10
blockchain10
data-structures10
compiler10
macros9
opc9
algorithms9
virtualisation9
virtual-machine9
vms9
Programming languages (40)
Github contributions (5)
status-im/nimbus-eth2
Jul 2018 - Sep 2022
Nim implementation of the Ethereum Beacon Chain
Role in this project:
Back-end Developer
Back-end DeveloperContributions:205 reviews, 354 commits, 445 PRs in 4 years 2 months
Contributions summary:Mamy primarily contributed to the development of the Ethereum Beacon Chain, specifically focusing on the implementation of data types and core logic within the Nimbus-eth2 repository. Their work involved adding and modifying fundamental data structures, updating the code to align with the latest specifications, and developing essential helper functions to support the state transition process. These changes included adding pseudo-random shuffling, implementing methods for indexing and handling the code.
nimbusnimbus-eth2nimserenityethereum
status-im/nimbus-eth1
Apr 2018 - Apr 2019
Nimbus: an Ethereum Execution Client for Resource-Restricted Devices
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:3 reviews, 65 commits, 50 PRs in 1 year
Contributions summary:Mamy primarily contributed to the development and testing of the Ethereum execution client. Their work involved refactoring test dependencies, adding new opcode tests, and addressing gas cost issues. Additionally, the user made code changes related to memory management and the structure of the virtual machine, indicating involvement in core backend functionality. These contributions are critical for ensuring the client's functionality and compliance with Ethereum standards.
fluffynimbusnim-langraspberry-pinim
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