Fernando Toledano
Miembro Fundador at Fwhibbit
Madrid, Community of Madrid, Spain
Summary
🤩
Rockstar🎓
Top SchoolFernando Toledano is a cybersecurity specialist and founding member of Red4Sec with 11 years of experience combining deep security expertise and hands-on software development across desktop, mobile and blockchain systems. Based in Madrid, he serves as a NEO Core Developer and security auditor for the NEO ecosystem, contributing performance and reliability improvements to core projects like neo-vm and neo-node and adding robust tests and CI integrations. He routinely performs code audits, bug bounty research and infrastructure reviews, and has hardened projects such as IPBan by improving DNS resolution and error handling. Known for blending cryptography-aware backend engineering with DevOps practices, he also brings an uncommon background as a professional magician, reflecting strong presentation skills and creative problem solving.
11 years of coding experience
11 years of employment as a software developer
Grado superior de Diseño de aplicaciones Informáticas, Computer Programming/Programmer, General, Grado superior de Diseño de aplicaciones Informáticas, Computer Programming/Programmer, General at IES Ribera del TajoCurso de Hacking Ético, Hacking Ético, Sobresaliente, Curso de Hacking Ético, Hacking Ético, Sobresaliente at The Security Sentinel
Spanish, English
Stackoverflow
410reputation
66kreached
14answers
9questions
Github Skills (47)
unit-testing10
virtual-machine10
netframework10
security10
neo4j10
uid10
dns10
front-end-development10
performance-optimization10
cryptography10
blockchain10
dotnet-core10
csharp10
server10
cli10
Programming languages (18)
Github contributions (5)
neo-project/neo
Oct 2017 - Oct 2022
NEO Smart Economy
Role in this project:
Back-end Developer & Cryptography Engineer
Back-end Developer & Cryptography EngineerContributions:3197 reviews, 286 commits, 1491 PRs in 5 years 1 month
Contributions summary:Fernando's contributions focused on optimizing the performance of the NEO blockchain project, specifically involving speed improvements for transaction deserialization and implementing changes to enhance the codebase's structure. These improvements included refactoring for performance, introducing new concepts, and updating existing code modules. The user also worked on various parts of the project, including the blockchain's core components and the memory pool, demonstrating experience across different layers of the system.
neodecentralized-identifierseconomyethereumblockchain
neo-project/neo-vm
Feb 2018 - Oct 2022
NEO Virtual Machine
Role in this project:Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:125 reviews, 86 commits, 245 PRs in 4 years 8 months
Contributions summary:Fernando made several contributions focused on improving the NEO Virtual Machine. These contributions included refactoring the code to use `TryGetValue` instead of `ContainsKey` and `Get`, optimizing performance by caching `ScriptHash`, and adding unit tests with Travis integration. Furthermore, the user implemented exception handling and improved the build process, showcasing expertise in both back-end development and build automation.
neovirtual-machine
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